The experimental results showed that the duration of microbial retting processing of kenaf fibers by using aerobic microbe was four times shorter than that by using anaerobic microbe. The residual gum percentage,break...The experimental results showed that the duration of microbial retting processing of kenaf fibers by using aerobic microbe was four times shorter than that by using anaerobic microbe. The residual gum percentage,breaking strength, breaking elongation and linear density of aerobic retted kenaf bundle fibers did not show significantly difference with that of anaerobic retted kenaf bundle fibers by ANOVA-Tukey's studentized test at a = 5% except for the softness. The bioenergetic principle and the calculation of the amount of ATP produced during the decomposition processing of kenaf gums were used to explain why the retting duration in the case of using aerobic microbes was much shorter than that of using anaerobic microbes.展开更多
通过构建元基因组16S r RNA文库和Fosmid文库,对富含纤维素、半纤维素等大分子有机物的湖南沅江明星麻厂碱性沤麻废水处理池(p H9.35)微生物多样性进行了分析和新的工业用酶基因筛选,发现该碱性处理池原核微生物主要以细菌为主,包括厚...通过构建元基因组16S r RNA文库和Fosmid文库,对富含纤维素、半纤维素等大分子有机物的湖南沅江明星麻厂碱性沤麻废水处理池(p H9.35)微生物多样性进行了分析和新的工业用酶基因筛选,发现该碱性处理池原核微生物主要以细菌为主,包括厚壁菌门、变形菌门、拟杆菌门、绿菌门等四个细菌类群,其中变形菌门弯曲杆菌科硫磺单胞菌属细菌和腐败希瓦氏菌为优势菌群,其次为拟杆菌门和厚壁菌门。该环境古菌的生物量和丰度较少,以广古菌门马氏甲烷八叠球菌为优势类群。并且从该碱性池元基因组Fosmid文库中筛选出包括淀粉酶(36个)、脂肪酶(9个)、蛋白酶(4个)、纤维素酶(4个)在内的一系列食品和工业用酶活性克隆。为进一步开发和利用该碱性处理池微生物基因资源奠定了基础。展开更多
文摘The experimental results showed that the duration of microbial retting processing of kenaf fibers by using aerobic microbe was four times shorter than that by using anaerobic microbe. The residual gum percentage,breaking strength, breaking elongation and linear density of aerobic retted kenaf bundle fibers did not show significantly difference with that of anaerobic retted kenaf bundle fibers by ANOVA-Tukey's studentized test at a = 5% except for the softness. The bioenergetic principle and the calculation of the amount of ATP produced during the decomposition processing of kenaf gums were used to explain why the retting duration in the case of using aerobic microbes was much shorter than that of using anaerobic microbes.
文摘通过构建元基因组16S r RNA文库和Fosmid文库,对富含纤维素、半纤维素等大分子有机物的湖南沅江明星麻厂碱性沤麻废水处理池(p H9.35)微生物多样性进行了分析和新的工业用酶基因筛选,发现该碱性处理池原核微生物主要以细菌为主,包括厚壁菌门、变形菌门、拟杆菌门、绿菌门等四个细菌类群,其中变形菌门弯曲杆菌科硫磺单胞菌属细菌和腐败希瓦氏菌为优势菌群,其次为拟杆菌门和厚壁菌门。该环境古菌的生物量和丰度较少,以广古菌门马氏甲烷八叠球菌为优势类群。并且从该碱性池元基因组Fosmid文库中筛选出包括淀粉酶(36个)、脂肪酶(9个)、蛋白酶(4个)、纤维素酶(4个)在内的一系列食品和工业用酶活性克隆。为进一步开发和利用该碱性处理池微生物基因资源奠定了基础。