橡实淀粉生物乙醇化橡实品种和菌种的筛选  

Screening of Acorn Varieties and Yeast Strains for Bio-ethanol Production

作　　者：田玉峰[1] 李安平[1] 谢碧霞[1] 丁彦鹏[1] 崔富贵[1] 

机构地区：[1]中南林业科技大学食品科学与工程学院,湖南长沙410004

出　　处：《食品科学》2011年第7期207-210,共4页Food Science

基　　金：林业公益性行业科研专项(200804033);湖南省科技计划项目(2010NK3040)

摘　　要：对湖南南岳采集的几种橡实品种的营养成分和发酵性能,以及4种酵母菌对茅栗淀粉发酵的适应性能进行比较。结果表明:12种橡实品种中以茅栗、栓皮栎、多脉青冈和锥栗等4个品种的淀粉含量及单株产量均较高,而单宁含量较低;锥栗和茅栗发酵后的醪液酒精体积分数和淀粉利用率显著高于栓皮栎和多脉青冈(P<0.05),而还原糖含量却相反(P>0.05);安琪耐高温高活性干酵母和南阳混合酵母(1308)与丹宝利高活性干酵母、K字酵母和南阳五号酵母(1300)相比,发酵后茅栗醪液酒精体积分数和醪液残还原糖含量方面具有显著优势(P<0.05),是橡实淀粉生物乙醇化的最优菌种。In the present study,comparative investigations on the nutritional composition and fermentability of acorn kernels from 12 varieties and the adaptability of 5 species of yeast towards the fermentation of Castanea seguinii Dode starch were carried out.The results showed that among 12 varieties of acorn,Castanea seguinii Dode,Quercus variabilis Blume,Cyclobalanopsis multinervis and Castanea henryi contained higher starch content and starch yield per plant but less tannin.Fermented mashes from Castanea henryi and Castanea seguinii Dode starches exhibited significantly（P0.05） higher alcohol content and starch utilization rate but significantly（P0.05） lower reducing sugar content when compared to fermented mashes from Quercus variabilis Blume and Cyclobalanopsis multinervis starches.Angel high temperature active dry yeast and Nanyang yeast 1308 had a significant（P0.05） advantage over Danbaoli high active dry yeast,K yeast and Nanyang yeast 1300 in terms of alcohol content and residual sugar content in fermented mash,thereby proving perfect strains for bio-ethanol production from acorn.

关 键 词：生物乙醇化 橡实品种 菌种 筛选 

分 类 号：TQ223.122[化学工程—有机化工]