Abstract

Proximate Composition, Anti-Nutritional Factors and Fibre Characterization of Sundried Soybean Milk Residue

In view of the ever increasing cost and the negative environmental impacts of wastes generated yearly in Nigeria, this study was undertaken to assess the suitability of sundried soybean milk residue as a feedstuff in swine ration by determining their chemical properties via proximate analysis, anti-nutritional factors and fibre fractions. The study was conducted at Central Laboratory Research of Oyo State College of Agriculture and Technology, Igboora. The processing method employed was sundried for three weeks in T1, T2 and T3 respectively. Proximate composition, phytochemical analysis and characterization of fibre were determined using standard procedures. Obtained data were subjected to descriptive statistics. The results of proximate analysis revealed that crude protein 16.65 ± 0.02, crude fibre 1.03 ± 0.02,ether extract 2.45 ± 0.03, ash 2.15 ± 0.02, moisture content 11.86 ± 0.03, nitrogen free extract 65.73 ± 0.02, dry matter 88.11 ± 0.05 and gross energy 3.63 ± 0.00. The anti-nutritional factors revealed phytate 0.01 ± 0.00, saponin 0.13 ± 0.00, glycoside 0.10 ± 0.00, phytosterol 0.01 ± 0.00, trypsin inhibitor 2.66 ± 0.03 and polysaccharide 0.11 ± 0.00. Antinutrients composition showed that sundried soybean milk residue had significant reduction in the levels of phytate, saponin, glycoside, phytosterol, trypsin inhibitor and polysaccharide. The non-starch polysaccharides were 11.52 ± 0.01 for cellulose, 15.85 ± 0.02 for hemicellulose, 29.63 ± 0.04 for neutral detergent fibre, 13.86 ± 0.03 for acid detergent fibre and 2.35 ± 0.02 for lignin respectively. It can be concluded based on the findings in this study that sundried soybean milk residue could be used as nonconventional feedstuff for the feeding of livestock species. Anti-nutrients composition showed that sundried soybean milk residue had significant reduction in the levels of phytate, saponin, glycoside, phytosterol, trypsin inhibitor and polysaccharide. The study also revealed that sundried soybean milk residue was higher in soluble non starch polysaccharide. The nutritive contents of sundried soybean milk residue in terms of gross energy 3.63 ± 0.00 is a potential energy source and therefore can be used as an alternative energy source in monogastric ration. The high content of crude protein and its attendant reduction in toxic substances placed it at a better level for consideration as replacement for the expensive soybean.


Author(s): Ogunbode Adesina Amao, Abegunde Paul Taiwo, Olaniyan Olusanya Ajibade, and Aderoju Abiodun Aliu

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