Evaluation of Anti-nutritional Factors in Hop Extracts and Extract from Azadirachta indica as Potential Substitute in the Nigerian Beer Industry
The anti-nutritional factors in Azadirachta indica (neem) as contrasted to hops were carried out in terms of their methanolic extracts. These factors (trypsin inhibitors, phytate, cardiac glycoside, oxalate, cyanogenic glycoside and hydrogen cyanide) were screened using standard methods. The result of the assay revealed that trypsin inhibitors ranged from 6.45-17.30%, phytate ranged from 0.99% to 1.68% while cardiac glycoside ranged from 3.5% to 6.0% and the concentration of oxalate ranged from 0.0405mg/100g to 0.1020mg/100g, cyanogenic glycoside ranged from 0.216ppm to 0.810ppm while hydrogen cyanide ranged from 0.540ppm to 1.404ppm. It was established from ranking that A. indica was closer to isomerized hop extract than to hop leaf extract in the content of anti-nutritional factors. Hence, the extract from A. indica could be used as suitable substitute for hops in beer brewing
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