以啤酒废酵母为原料生产优质酵母提取物

摘要

ABSTRACT The study focused on a kind of high-quality yeast extract processing technology based on spent brew- er' s yeast. The process included removal of impurity, debittering, enzymolysis, concentration and spray dehydration, after which a kind of light yellow yeast extract powder with well water-solubility can be obtained. During the process, 71.00% of raw yeast' s total amount, which be measured by absolutely dry weight, came into the final product, andthe percent for crude protein was 85.55%. Analysis result ot the product snowed mat lotJ g yeast extract eonta~neu 52.90 g crude protein, 26.48 g Carbohydrate, 0.20 g fat, 11.08 g ash and 9.34 g dietary fiber. What' s more, free amino acids and oligopeptide was the main form of nitrogen in the yeast extract, and it will be of great important po- tential material for health-care food.%研究了以啤酒生产中废弃酵母为原料的优质酵母提取物制备工艺。啤酒废酵母经除杂、洗涤脱苦、细胞破碎、蛋白水解、浓缩干燥等加工程序,获得一种水溶性良好、淡黄色、粉末状酵母提取物产品。该产品的原料利用率为71.00%,粗蛋白利用率为85.55%。100 g绝干酵母提取物含有粗蛋白52.90 g、膳食纤维9.34 g、灰分11.08 g、脂肪0.20 g、碳水化合物26.48 g,其中粗蛋白主要以游离氨基酸和低聚肽形式存在。