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The nutritional attributes of soybean has led to the availability of soy products particularly soybean powder of diverse qualities since its production technique is robust. This studyis aimed at evaluating the quality of soybean powder displayed in major marketslocated in Umuahia, Abia state, Nigeria. The proximate composition, vitamin and mineral content and microbial safety were analysed.The protein content of all the samples were found to be low (2.4-4.5%), which could be attributed to the poor processing methods used wherein the protein inhibitors were not properly reduced to insignificant levels.Also the soybean powders were observed to have been adulterated with cassava flour. The carbohydrate content for all samples ranged between 30.52 to 63.14 % which validates its claim as a high energy source.The vitamin C content of the soybean samples was lower than the values for soybean in literature which is likely due to the soaking process which may have resulted in the leaching out ofsoluble vitamins.The mineral content was relatively low. The growth of Staphylococcus aureus in samples obtained from Cooperative andUbani market was significantly high; (7.8x 10 5 cfu/g) and (8.1x 10 5 cfu/g) respectively which is attributed to poor handling and non-hygienic methods.

Quality Evaluationand Microbial Safetyof Soybean Powder Sold in Umuahia, Abia State, Nigeria