酵母精中试生产及其应用研究  

STUDY ON THE PILOT-SCALE PRODUCTION OF YEAST EXTRACT AND ITS APPLICATION

作　　者：钟文辉[1] 吴小荣[1] 殷蔚申[1] 樊仕俊 曹志明 吉爱忠 栾虹 

机构地区：[1]郑州粮食学院粮油储藏系,江苏泰兴啤酒厂

出　　处：《郑州粮食学院学报》1996年第2期9-14,24,共7页Journal of Zhengzhou Institute of Technology

基　　金：国家级科技成果重点推广计划项目

摘　　要：利用废弃啤酒酵母中试生产出品味良好的高级酵母精。废弃啤酒酵母经洗涤、ＮａＨＣＯ_３预处理，拌水调成酵母悬浮液，添加食盐约３％（ｗ／ｗ），控制起始ｐＨ６～７，于４０～６０℃自溶４４ｈ左右。自溶后经分离、浓缩、调配等工序制得糊状酵母精成品。该产品为棕褐色，鲜香浓郁；含有１８种氨基酸、蛋白质、维生素等多种营养成份；其氨基氮、总氮、食盐、水分含量分别约为１．９、３．４、１４、５１ｇ／１００ｍＬ。每１００ｋｇ含水量约６９％的压榨酵母可产出该质量水平的糊状酵母精约５５ｋｇ。生产每ｔ糊状酵母精的原料成本约２５００元。应用试验表明，酵母精可显著增进火腿肠、方便面、菜肴和酱油等的风味，提高它们的食用品质。A dark-brown palatable yeast extract made from brewer’s yeast is obtained by method of autolysis on a pilot scale. The yeast is first washed with water and treated with NaHCO3,then mixed with water to make a slurry. The autolysis process is then carried out at 40￣60C with 3% (w/w) of salt and initial pH value of 6～7 for about 44 hours. After a successive process of centrifugating separation, concentration, the brown paste of yeast extract is then mixed with other ingridients to form the final product,which includes at least 18 kinds of amino acids, vitamins and other nutrition components. Each 100 mL of the product contains about 3. 4 grams of total nitrogen(among which about 1. 9 grams is free α-amino nitrogen) .about 14 grams salt. about sl grams water. 55 kg product can be obtained from 100 kg material with about 69% water content. The material cost is about 2500 yuan RMB per ton.The aplication test shows that the yeast extract can notably enhance the flavour of sausage,instant noodles,dishes,soy sauce and other foods.

关 键 词：啤酒酵母 酵母精 氨基氮 生产 酿酒微生物 

分 类 号：TS261.9[轻工技术与工程—发酵工程] TS261.11[轻工技术与工程—食品科学与工程]