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International Journal of Food Science, Nutrition and Dietetics (IJFS)    IJFS-2326-3350-06-202

Nutritional Characteristics of Maize-based Complementary Food Enriched with Fermented and Germinated Moringa Oleifera Seed Flour

Adeoti OA1,2*, Osundahunsi OF1

1 Department of Food Science and Technology, The Oke-Ogun Polytechnic, Saki Oyo State, Nigeria.
2 Department of Food Science and Technology, The Federal University of Technology, Akure, Nigeria.

*Corresponding Author

Adeoti Oluwole A,
Department of Food Science and Technology,
The Oke-Ogun Polytechnic, Saki Oyo State, Nigeria.
Tel: 08162480515

Received: April 28, 2017; Accepted: July 11, 2017; Published: July 20, 2017

Citation: Adeoti OA, Osundahunsi OF (2017) Nutritional Characteristics of Maize-based Complementary Food Enriched with Fermented and Germinated Moringa Oleifera Seed Flour. Int J Food Sci Nutr Diet. 6(2), 350-357. doi:

Copyright: Adeoti OA© 2017. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.


Malnutrition of varying degrees has been associated with feeding infants with unwholesome and poor quality weaning foods. Therefore, the nutritional characteristics of maize-based complementary food enriched with fermented and germinated Moringa oleifera seed flour was investigated. The Moringa oleifera seeds were fermented and germinated using standard processing methods while the maize grains were fermented for the production of “ogi” flour. The proximate, antinutritional, mineral and functional properties of the formulated complementary food were determined. The results of the proximate composition of the diet showed that crude protein content of the complementary diets differed significantly (p< 0.05) and the value ranged from 15.27 to 17.00 % while the energy value ranged from 386.28 to 395.01 kcal. Phytate content of the sample ranged from 0.09 to 0.36 mg/g and the trypsin inhibitor value was 0.05 to 2.30 tiu/mg. The predominant mineral elements are sodium and phosphorus whose values ranged from 58.60 to 67.85 mg/100g and 57.58 to 68.58 mg/100g respectively. Other mineral elements found in least amount are copper and manganese and the values ranged from 12.46 to 25.38 mg/100g and 0.76 to 0.94 mg/100g respectively. The loosed and packed bulk densities of the diet ranged from 0.54 to 0.57 g/ml and 0.62 to 0.72 g/ml while the water and oil absorption capacities of the samples were 179.00 to 194.00 % and 140.00 to 150.00 % respectively. The study established that fermented-ogi moringa seed flour was more nutritious in terms of the nutrient composition than the raw-ogi moringa seed and germinated-ogi moringa seed flours and it also compared favorably with commercial diet.

3.Material and Methods
    3.1 Materials
    3.2 Methods
    3.3 Analysis
    4.1 Proximate Composition (%) and energy value (kcal/g) of Ogi-moringa seed flour complementary diet
    4.2 Antinutritional compositions of Ogi-moringa seed flour complementary diet
    4.3 Mineral compositions of Ogi-moringa seed flour complementary diet (mg/100g)
    4.4 Functional properties of Ogi-moringa seed flour complementary diets


Complementary Food; Fermented; Germinated; Moringa Oleifera; Nutrient.


Complementary foods play a vital role on child growth and development since it complements for both nutritional and developmental needs of the infant when breast milk alone is no longer sufficient [62]. Good quality weaning food must have high nutrient density, bulk density, low viscosity, appropriate texture along with high energy, protein, micronutrient contents and consistency that allows easy consumption [17]. Several studies have reported that most of the complementary foods consumed by the infants in many parts of world are deficient in essential macronutrients and micronutrients leading to malnutrition, which is one of the serious public health problems in developing countries [15, 64, 44]. Most lethal forms of malnutrition known as protein energy malnutrition generally occurs during the crucial transitional phase when children are weaned from liquid (breast milk) to semi-solid or fully adult (family) foods. In view of this nutritional problem, several strategies have been used to formulate weaning food through a combination of locally available food materials that complement each other in such a way as to create a new pattern of amino acids that provide the recommended daily allowance for infants [41].

Ogi is an acid-fermented cereal gruel or porridge made from maize, sorghum, or millet; the choice of cereal depending on preference and ethnicity. It is popular in Nigeria and in most West African countries, where it is mainly used for complementary feeding of infants, although it is also consumed by adults [7]. During fermentation, enzymes elaborated by the fermenting micro-organisms break down many complex substances such as starch, oligosaccharides, protein and phytic acid complexes thus increasing the quantities and qualities of easily digestible nutrients in foods. This feature is a major benefit to the consumers of ogi, who are majorly infants, children and convalescent adults with weak digestive systems. Several attempts have been made to improve the nutritional status of ogi by fortification with proteinrich substrates such as soya beans, groundnuts, melon seeds and cowpea. Many authors have reported incorporation of fruits such as ripe dessert banana flour, baobab, pawpaw and breadfruit seeds [3, 5, 16, 50] among others have been incorporated into “ogi” for quality improvement. However, little information exists on the use of moringa oleifera seeds as a supplement to improve the nutritional status of “ogi”.

Moringa oleifera is an underutilised plant and the whole seeds are highly restricted to eaten green, roasted or powdered and steamed in tea and curries [24, 48]. The pods and seeds often referred to as Moringa kernels have a taste that ranges from sweet to bitter and are most popularly consumed after frying to get a groundnutlike taste. The seeds contain a profile of important minerals, and are good source of protein, vitamins, beta-carotene, amino acids and various phenolics compounds [10, 11]. With these aforementioned nutritional profiles of the moringa seeds, there is the need to fully harness the potentials in moringa seeds which are highly available and relatively cheaper in Nigeria. Hence, this study has investigated the effect of fermented and germinated moringa oleifera seed flour on the nutritional quality improvement of ogi as complementary diet.

Materials and Methods


Moringa oleifera seeds were bought from Bashorun, a local market in Ibadan Oyo State and identified at the Department of Crop science, Federal University of Technology Akure, Nigeria while dried yellow maize grains used for the research were purchased from International Institute of Tropical Agriculture Ibadan, Nigeria.


Processing of raw moringa oleifera seed flour

Raw Moringa oleifera seeds were processed according to the method of Ijarotimi et al., (2013) with slight modification. The seeds were sorted, dehulled and oven dried at 50°C for 10 h in a cabinet drier (model QUB 30510G, Gallenkamp, U.K.). It was ground using a laboratory mill (Numex pep grinding mill, India) and sieved through 250 mm sieve to obtain raw moringa seed flour. The milled sample was packed in plastic container sealed with aluminum foil and stored in low density polyethylene bags under freezing condition (-4°C) for subsequent analyses.

Processing of fermented Moringa oleifera seed flour

A modified method of Omafuvbe et al., (2004) [52] was used for the processing of fermented moringa seed flour. Moringa oleifera seeds was sorted, dehulled and boiled for 1 h. The seeds thereafter were transferred into a pot, wrapped with blanched banana leaves and allowed to ferment at room temperature for 72 h. The fermented seeds were oven dried at 50°C for 10 h in a cabinet drier. It was then ground using a laboratory mill, sieved through 250mm sieve to obtain fermented moringa oleifera seed flour. The milled sample was packed in plastic container sealed with aluminum foil and stored in low density polyethylene bags under freezing condition (-4°C) for subsequent analyses.

Processing of germinated Moringa oleifera seed flour

Moringa oleifera seeds were processed according to the method of Ijarotimi et al., (2013) with slight modification. The seeds were sorted and the seeds were soaked for 12 h in ten times of their volume of sterile distilled water to achieve hydration, following which the water was strained and the seeds were spread on perforated trays lined with wet cloth and covered with another wet cloth. The seeds were allowed to germinate (sprout) at room temperature 27 ± 2°C for a period of 72 h. The germinated seeds were picked carefully with the sprouts, washed, dehulled, oven dried at 50°C for 10 h using cabinet drier and ground using a laboratory mill. It was then sieved through 250 mm. The sieved sample was packed in plastic container sealed with aluminum foil and stored in low density polyethylene bags under freezing condition (-4°C) for subsequent analyses.

Processing of maize “ogi’ flour

Yellow maize grains were weighed (5 kg) and sorted. It was soaked in hot water, and left for 72 h. The grains were washed with distilled water; wet milled with an attrition mill (locally fabricated grinding machine), sieved with muslin cloth, and allowed to ferment for 72 h. The fermented slurry was decanted, drained, oven dried in a cabinet drier at 50°C for 10 h, re-milled using a Philips laboratory blender (HR2811 model). It was then sieved through 250 mm. The sieved sample was packed in plastic container sealed with aluminum foil and stored in low density polyethylene bags under freezing (-4°C) for subsequent analyses.

Product formulation using material balance

In order to formulate weaning diet, the material balance method requires the use of proximate values of the raw materials and employs three basic categories; materials in, materials out and materials stored [8]. Therefore, the primary criteria is to select the components rich in providing protein and energy requirements while the next target is to know the proximate values of the raw materials that are going to be blended. They are required as an input for material balance. The compositions commonly used for product formulation are protein, carbohydrates, and fat that provides body with energy. The output components used in the material balance are from FAO/WHO standards based on the targeted age. Therefore, the material balance method was used to target 18% protein and 9% fat in the weaning blend formulation for particularly the age group of 6 to18 months [8].

The formulated products contained 66.60% and 33.40% for ogiraw moringa flour (ORM), 72.14% and 27.86% for fermented ogi-fermented moringa flour (OFM), 80.05% and 19.95% for ogi-germinated moringa (OGM) flour respectively.


Determination of proximate composition and Energy value of the samples

Triplicate samples were analyzed for proximate composition, using standard official methods [12], while energy value was determined by using the Atwater’s conversion factors.

1 kcal ∕ 100 g = [(4 × carbohydrate) + (4 × protein) + (9 × fat)]

Determination of anti-nutritional factors

Phytates were determined by the anion-exchange method as described by method number 986.11 using phosphate as the standard. Oxalate content of the food samples was determined using the method of AOAC (2005) [12]. Tannin contents were determined by the modified vanillin-HCl methods described by (Nwinnuka et al., 2005) [47]. Trypsin activity of the samples was determined using the method of AOAC (2005) [12]. Saponin and alkaloid was determined using Spectrophotometric method as described by Ibrahim and Fagbohun,( 2012) [30].

Determination of mineral composition

The method described by Association of Official Analytical Chemists (AOAC, 2005) [12] was used for mineral analysis. Two grams of each of the samples was digested with concentrated Nitric acid and Hydrogen peroxide, filtered and the filtrate in a 5 ml volumetric flask was loaded to Atomic Absorption Spectrophotometer, (model 703 Perkin Elmes, Norwalk, CT, USA). Calcium, magnesium, iron, copper, zinc, sodium, potassium and iodine were determined at wavelengths 317.9 nm, 285.2 nm, 259.9 nm, 324.7 nm, and 213.9 nm respectively. Phosphorus was determined using Vanodo- molybdate method. The serially diluted phosphate standard solution was made acidic by addition of 2 ml nitric acid (2:1), 25 ml of the Vanodo-molybdate reagent was added, the solution was diluted to the mark with distilled water, mixed thoroughly and allowed to stand for 10 min and the optical density was measured at 470 nm. All values were expressed in mg/100g.

Determination of functional properties

Determination of the bulk density: Bulk density was determined according to the method described by Maninder et al., (2007) [45]. Each flour sample was gently filled into a 10 ml graduated cylinder, previously tarred and the weight was recorded. The bottom of the measuring cylinder was gently tapped on a laboratory bench several times until there was no further decrease in the volume of the sample in the cylinder. Bulk (loose and tapped) densities were calculated as weight of sample per unit volume of sample (g/ml). Measurements were made in triplicate using the equation below:

Bulk density = ((W1-W2)/(Volume of sample before tapping)) ---- Eqn (1)

W1 = weight of sample before tapping
W2 = weight of sample after tapping

Determination of water and oil absorption capacities: The modified method of (Sefa-Dedeh et al., 2004) [60] was used to determine water and oil absorption capacities of the flour samples. About two gramme of each flour sample was weighed into 50 ml preweighed centrifuge tubes and stirred into 40 ml distilled water or refined soybean oil for 1 h on a shaker (Edmund Buhler SM 30). The mixtures were placed in a centrifuge (Spectra Scientific Merlin) and centrifuged at 2200 rpm for 15 min. The water or oil released on centrifugation was drained and the wet flour weighed to determine by difference the weight of bound water or oil. The percentage water absorption capacity (% WAC) or oil absorption capacity (% OAC) was calculated using the following equation:

WAC or OAC (%)= ((weight of bound water)/(weight of sample)) × 100 ---- Eqn (2)

Determination of emulsion capacity: Emulsion capacity was determined by the method of (Oti and Akobundun, 2007). About one gramme of flour sample was mixed with 5 ml of distilled water and equal volume (5 ml) of refined groundnut oil and stirred. The mixture was centrifuged at high speed 2000 rpm for 15 min. The volume of oil separated from the sample after centrifuge was read directly from the tube. Emulsion capacity was expressed as the amount of oil emulsified and held per gramme of sample.

Determination of foaming capacity: The method of Jitngarmkusol et al., (2008) [39] was used for the determination of the foaming capacity of the samples with some slight modifications. About two gramme of each flour sample was mixed with 100 ml of distilled water and the suspension was whipped with a kitchen blender. The whipped suspension was transferred into a 250 ml graduated cylinder. Volumes of the whole mixture were recorded before and after whipping and the experiment was done in triplicate. The foaming capacity was calculated using the equation:

Foaming capacity (%)=(((V1-V2)/VI)) × 100 ---- Eqn (3)

V1 is the volume of initial mixture and V2 is the volume of the mixture after whipping and V3 is the volume of the foam after 5 h.
Where V1 is the volume of emulsion before centrifugation, V2 is the volume of the emulsified layer.

Determination of solubility and swelling capacity: The solubility and swelling capacity (SC) of flour samples were determined using the method described by (Chatakonda et al., 2011) [19] with some modifications. Approximately 1 gramme of flour sample was weighed into a 50 ml centrifuge tube containing 40 ml deionized water and vortexed for 30 min. The tubes were then heated in a thermostatically regulated water bath at 85°C for 20 min and cooled to room temperature. The tube and its contents were centrifuged at 2200 rpm for 15 min and the clear supernatant carefully decanted into a pre-weighed petri dish. The weight of the residue/sediment was then noted. The water in the supernatant was evaporated and the difference in weight of petri dish was recorded as the weight of soluble fraction. Solubility and swelling power (SP) were calculated using the following equations:

Solubility (%)= ((weight of soluble fraction)/(weight of sample)) × 100 ---- Eqn (4)
Swelling Capacity (%)= ((weight of sediment)/(weight of sample ×(100-solubility)) × 100 Eqn (5)

Determination of least gelation concentration: Test tubes containing 20% (w/v) dispersions of each diet were prepared with 5 ml distilled water. The dispersions were heated for 1 h in a boiling water bath, cooled rapidly under running tap water and subsequently at 4ºC for 2 h. The test tubes were inverted to determine the concentration at which the sample would not slip.

Statistical design

Results were expressed as mean of triplicate analyses. A one-way analysis of variance and Duncan’s test were used to establish the significance of differences among the mean values at the 0.05 significance level. The statistical analyses were performed using SPSS software version 21 (SPSS Inc., USA).


Proximate Composition (%) and energy value (kcal/g) of Ogi-moringa seed flour complementary diet

The proximate composition of the complementary diets is presented in Table 1. The moisture content of the diets ranged between 4.72 and 8.75% for cerelac (control) and ogi-fermented moringa seed flour respectively. There was significant difference (p<0.05) in the protein values of the samples with cerelac having the highest value 17.00% while ogi-raw moringa seed flour had the least value 15.27%. The fat content ranged between 8.89 (cerelac) and 9.34% (ogi-fermented moringa seed flour). The fibre and ash content of the samples ranged between 3.63 and 4.65% for (ogi-fermented moringa seed flour) and (cerelac), 2.27 and 2.99% respectively for (ogi-raw moringa seed flour) and (cerelac). The carbohydrate value of the diets ranged between 59.26 and 61.75% for (ogi-germinated moringa seed flour) and (cerelac). There was significant difference (p<0.05) in the energy values of the diet. The values ranged between 386.28 for (ogi-fermented moringa seed flour) and 395.01 kcal/g for (cerelac) respectively.

Table 1. Proximate Composition (%) and Energy (Kcal/g) of the Ogi-moringa Seed Flour Complementary Diets.

Antinutritional compositions of Ogi-moringa seed flour complementary diet

The result of the antinutritional composition of the samples as presented in Table 2 show a significant difference (p<0.05) in all the values of the parameters analysed. The phytate ranged between 0.09 for (cerelac) to 0.36 mg/g for (ogi-raw moringa seed flour) while the oxalate value of the complementary diet ranged between 0.06 for (cerelac) to 0.24 mg/g for (ogi-raw moringa seed flour). The tannin value ranged between 0.04 for (cerelac) and 0.26 mg/g for ((ogi-raw moringa seed flour). Other antinutritional compositions are saponin whose value ranged between 0.07 for (cerelac) and 0.46% for (ogi-raw moringa seed flour), alkaloid 0.07 and 0.28% and trypsin inhibitor 0.05 and 2.30 TIU/mg for (cerelac) and (ogi-raw moringa seed flour) respectively.

Table 2. Anti-nutritional Compositions of Ogi-moringa Seed Flour Complementary Diets.

Mineral compositions of Ogi-moringa seed flour complementary diet (mg/100g)

The mineral composition of the complementary diets is presented in Table 3. The compositions of the mineral shows that there was significant difference (p<0.05) among the samples. Sodium, potassium and calcium values ranged between 58.60 and 67.85 mg/100g; 56.38 and 66.79 mg/100g; 43.55 and 59.66 mg/100g for (ogi-raw moringa seed flour) and (cerelac) respectively. Other mineral elements include phosphorus, magnesium, copper, iron, iodine, manganese and zinc and the values ranged between 57.58 and 68.58 mg/100g; 53.00 and 60.10 mg/100g; 12.46 and 25.38 mg/100g; 45.69 and 67.36 mg/100g; 5.77 and 11.35 mg/100g; 0.76 and 0.94 mg/100g; 14.57 and 23.68 mg/100g. The Na/K and P/Ca ratios ranged between 0.96 and 0.98 and 1.15 and 1.32 respectively for (cerelac) and (ogi-raw moringa seed flour) sample.

Table 3. Mineral (mg/100g) Compositions of Ogi-moringa Seed Flour Complementary Diets.

Functional properties of Ogi-moringa seed flour complementary diets

Functional property of the sample is presented in Table 4. The loosed and packed bulk densities of the diets ranged between 0.54 and 0.57 g/ml for (cerelac) and (ogi-raw moringa seed flour) and 0.62 and 0.72 g/ml for (ogi-fermented moringa seed flour) and (cerelac) respectively. Water absorption capacity, oil absorption capacity, emulsion capacity and foaming capacity values ranged from 179.00 and 194.00% for (ogi-fermented moringa seed flour) and (cerelac), 143.00 and 150.00% for (ogi-fermented moringa seed flour) and (cerelac), 25.87 and 33.60% for (ogi-fermented moringa seed flour) and (cerelac) and 16.79 and 22.10% for (ogifermented moringa seed flour) and (cerelac) respectively. Other functional properties of the diets are swelling capacity, least gelation concentration and solubility the values ranged between 20.79 and 29.68%, 6.26 and 11.65% and 34.29 and 45.89 gm-1 respectively.

Table 4. Functional Properties of Ogi-moringa Seed Flour Complementary Diets.


Low moisture content in complementary foods is very important to prevent nutrient losses and ensure adequate shelf life of the product as the removal of moisture generally increases concentrations of nutrients and make some nutrients more available [9]. The protein Advisory group of United Nation recommends that moisture content should not exceed 10% in order to keep a floury product for a reasonably long time [51, 58]. The moisture content of the developed diets was higher than the values of 1.52 and 2.55% reported by Kumkum et al., (2010) [40] who developed weaning mixes containing roasted ingredients. The higher moisture content observed may be due to the processing techniques used (fermentation and germination). The protein content of the developed complementary foods is significantly lower than that of the cerelac (Control). However, the protein content of all the samples is within the range of 15% recommended by World Health Organisation (2001) [65] for complementary food. The protein content of the ogi-fermented moringa seed flour (OFM) and ogi-germinated moringa (OGM) were significantly higher than ogi-raw moringa seed flour (ORM). Fasasi (2009) [25] reported that germination and fermentation improves the protein content and quality of food products. Increase in the protein content during germination and fermentation of the seeds may be attributed to the net synthesis of enzymic protein by the germinating and fermenting seeds [37]. The protein content is comparable to 16.00-20.00% reported by Lalude and Fashakin (2006) [41] that produced weaning foods from sorghum and oil seeds and 9.45-19.70% reported by Osundahunsi and Aworh (2002) [55] for various tempeh-fortified maize-based complementary diets. The fat content of the developed complementary food is significantly (p<0.05) higher than the control sample (cerelac), however, all the diets met the minimum requirement of 10-25% recommended by WHO (2001) for infant foods. All experimental crude fat values are in agreement with the values 4.8 and 9.42% reported by Ikujenlola and Fashakin (2005) [35] for complementary diets produced from quality protein maize-soy blends. Lalude and Fashakin (2006) [41] reported that the fat content of weaning food from sorghum and oil seeds was 9.21% which were in the same range with the value obtained in this study. Although, high fat content is nutritionally advantageous because it can increase the energy level of a diet, however, it can reduce the shelf life and stability of the food product during storage since unsaturated oils are vulnerable to oxidative rancidity [2]. The fibre content of the developed samples was less than the recommended value of less than 5% specified by the FSSAI (2011) [28]. Weaning food with low fibre content is very important as this would enable children to consume food that is more nutrient-dense and to meet the daily energy and other vital nutrient requirements [31]. Emphasis is placed on the importance of low fibre in weaning food because the gastrointestinal system of the infants may not be well developed to handle diet high in fibre content as this has been reported to impair protein and mineral digestion and absorption in human subjects [14]. The level of ash in food is an important nutritional indicator of minerals density and also a quality parameter for contamination [42]. The ash content of the control sample (cerelac) was significantly higher, however, among the formulated diets the ash content of the ogi-fermented moringa seed flour and ogigerminated moringa seed flour were higher than the ogi-raw moringa seed flour diet and this could be as a result of improved bio-availability of minerals during fermentation and germination. The carbohydrate content of the developed samples is in agreement with the values reported in germinated weaning formulations using millet (60.2-69.6%) by Imitaz, et al., (2011) [36]. Carbohydrate contributes to the bulk of energy of the sample which makes it high energy food and ideal for the growth of growing infants [6]. The calories in an infant diet are provided by the protein, fat and carbohydrate which are major components of complementary foods that help to meet the energy requirement of growing infants and lack of any of these may lead to malnutrition [14]. The calorie value of the developed and control samples are within specific minimum requirement of 380-425 kcal as recommended by FAO (2004) [29]. The calorie value of formulated diets is also within the range of 372 -397 kcal/100g reported for complementary diets based on cereal and legumes combination [18]. Tizazu et al., (2010) [63] also reported energy values of weaning blends prepared from sorghum, legumes and oilseeds as 405.8 to 413.2 Kcal/100g which is higher than the values obtained in this study. The result of the antinutritional composition of the developed complementary diets that is the ogi-fermented seed flour and ogigerminated moringa seed flour were found to be significantly reduced (p<0.05) compared with that of ogi-raw moringa seed flour. The control (cerelac) sample has the least phytate content while the ogi-raw moringa flour (ORM) had the highest value. These results are in agreement with Abdelhalem et al., (2008) and Makokha et al., (2002) [1, 43] who reported that fermentation and germination of sorghum in the production of complementary foods produces a significant reduction in phytate concentration. Fagbemi et al., (2005) [27] also reported that fermentation is the most effective processing method that reduced phytic acid in cereal flour and the reduction may be attributed to the secretion of the enzyme phytase during fermentation. Suna and Uroo (2014) [61] also reported that during cooking, phytic acid may decrease due to the formation of insoluble complexes between phytate and other content at high temperature. There was significant decrease in the oxalate value of the sample and this showed that the oxalate content of the sample including the control (cerelac) sample is within the tolerable level. Oxalate forms complexes with calcium, magnesium and iron leading to the formation of insoluble salts. High concentration of oxalate in the diets can increase the risk of kidney calcium absorption, which resulted in kidney stone and oxalate poisoning [21]. The trypsin inhibitor activity (TIA) observed was significantly reduced due to the processing methods used. Protease inhibitors such as trypsin inhibitor in diets lead to formation of irreversible trypsin-enzyme inhibitor complexes. This causes a decrease in trypsin in the intestine and subsequently indigestibility of dietary protein, thus leading to slower growth in children [59]. There was a significant difference (p<0.05) in the mineral elements composition of the formulated and control diets. The results showed that the mineral composition of the control sample (cerelac) was the highest. The mineral content of ogifermented and ogi-germinated moringa oleifera seed complementary diets were significantly higher than the ogi-raw moringa seed flour complementary diet and this increment in mineral content of the diets may be due to the processes of fermentation and germination as reported by Ikujenlola (2008) [34]. The ratios of potassium to sodium (Na/K) and phosphorus to calcium (P/Ca) are indices of body electrolyte balance and bone formation respectively. K:Na less than one is recommended in the diet of infant, therefore the complementary diets formulated in this present study is comparable to recommended ratio. The high P/Ca ratio observed in this study is of great nutritional benefits particularly for children and aged that needs higher intake of calcium and phosphorus for bone formation and maintenance. Study has shown that food is considered good if the P/Ca ratio is above one and poor if the ratio is less than 0.5 [46]. Bulk density is defined as the ratio of flour weight to the volume in gram per millitre. It is a measure of flour heaviness and an important parameter that determines the suitability of flour for the ease particulate food packaging and transportation [4]. High bulk density is a disadvantage in case of ready-to-use complementary food (RUCF) because it can limit the nutrient intake per feed [38]. The lower loose bulk density implies that less quantity of the food samples would be packaged in constant volume thereby ensuring an economical packaging. Nutritionally, low loose bulk density promotes easy digestibility of food products, particularly among children with immature digestive system [55]. The bulk density of ogi-fermented moringa (OFM) and ogi-germinated moringa (OGM) were lower than the ogi-raw moringa samples. Both fermentation and germination have been shown to reduce bulk density [33]. The decrease in the bulk density after fermentation and germination would be advantageous in the preparation of infant gruels because high bulk density limits the caloric and nutrient intake per feed per child and infant sometimes are unable to consume enough to satisfy their energy and nutrient requirement [53]. The value of the bulk density (both loosed and packed) is in agreement with the value of 0.54-0.71 g/ml reported by Lalude and Fashakin (2006) [41] of a weaning food from sorghum, oilseeds and Nutrend. However, these values are higher than those reported by Cuevas-Rodriquez et al., (2006) [20] with the value of 0.50-0.54 g/ml for nutritional quality of tempeh flour. Water absorption capacity was also reduced by both fermentation and germination. Lower water absorption capacity is desirable for making gruels in which more flour can be added per unit volume of the gruel as this will help to increase the energy density and nutrient content of infant food. Oil absorption capacity is an important functional property as it is attributed to the physical entrapment of oil which is considered important as flour retainer and improves the mouth feel of food products [57]. From statistical analysis, there was significant difference p< 0.05 in the oil absorption capacity. It was observed that oil absorption capacity of ogi-fermented moringa seed flour and ogi-germinated moringa seed samples were higher than ogi-raw moringa seed flour. Imitiaz et al., (2011) [36] reported that germination of seeds enhances the oil absorption capacity due to the entrapment of oil related to the non-polar side chain of the protein. Flour from seeds and legumes that had oil absorption capacity of more than 6.00% have been reported to perform well in the formulation of meat extenders, bakery and weaning products [57, 66]. Swelling capacity of food gives an indication of increase in the volume upon absorption of water. It is very important parameter when changes in volume after processing enhance the acceptability of the final product. There was a significant difference (p<0.05) in the swelling capacity of the samples. It was observed that the swelling capacity of ogi-fermented moringa seed flour and ogi-germinated moringa seed flour were significantly reduced. The observed decrease may be as a result of disruption of hydrogen atom inherent in the seed by amylases and proteases into sugars and amino acids as reported by Egwim and Ademonom (2009) [23]. A flour product with high swelling capacity has comparative advantages over those with low swelling capacity as the volume of the final product with high swelling capacity is of economic advantage [54]. The least gelation concentrations of ogi-fermented moringa seed flour and ogigerminated moringa seed flour were lower than the control sample (cerelac). Least gelation concentration is an index of gelation. According to Olapade and Adetuyi (2007) [50] gels are characterized by their viscosity, plasticity and elasticity and the higher the least gelation concentration, the lower is the ability of the flour to form a stable gel. From the present study, it was found that ogifermented moringa seed flour and ogi-germinated moringa seed flour formed a stable gel than ogi-raw germinated moringa seed flour and cerelac and such product will serves as a good binder and provide consistency in food preparation such as semi-solid beverages like kunun-zaki [24]. However, high least gelation concentration observed in ogi-raw moringa seed flour and cerelac samples are desirable as Arawande and Borokini (2010) [13] reported that high least gelation concentration will lead to reduction in viscosity which therefore leads to increase in nutrient density and low dietary bulk which is highly favorable for a good weaning diets.


Ogi-based complementary diets were formulated with fermented or germinated Moringa oleifera seed flour. The ogi-fermented moringa oleifera seed flour complementary diet is more nutritious in terms of the nutrient and also shown to have good functional properties as weaning food. The finding from this research work has increased the utilisation of the fermented Moringa oleifera seed which still remain underutilised in developing countries, resulting in its usage as complementary diets for the low income family instead of over-dependant on available but costly Nigerian commercial weaning foods.


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