Effects of Three Strains Combinations of Lactobasillus buchneri,Aspergillus niger,Candida tropicalis,Bacillus subtilis and Lactobacillus plantarum on Fermentation Quality of Cassava Residue

The experiment was carried out to investigate effects of three strains combinations of Lactobasillus buchneri (LAB),Aspergillus niger (AN),Candida tropicalis (CT),Bacillus subtilis (BS) and Lactobacillus plantarum (LAP) on fermentation quality of cassava residue.In this study,cassava residue were used as fermentative raw material,three strains were combined by 1∶1∶1 chosen from LAB,AN,CT,BS and LAP,getting five different combination.Combination 1:LAB+AN+LAP;Combination 2:LAB+CT+LAP;Combination 3:LAB+BS+LAP;Combination 4:AN+CT+LAP;Combination 5:CT+BS+LAP;1% urea or 1% urea+0.6% brown sugar was added to each combination;Blank group was without any additives;1% urea was added to control group Ⅰ and 1% urea+0.6% brown sugar were added to control groupⅡ.Experimental group Ⅰ was consisted of control group Ⅰ+different combination (1-5) while experimental group Ⅱ was consisted of control group Ⅱ+different combination (1-5).Water content in each group was about 65% by modulating with normal saline,each group was fermented in the vacuum of polyethylene film bag for 10 days.The results showed as follows:①pH of each experimental group was significantly lower than that of blank group and control group (P < 0.05),experimental group Ⅱ1 (LAB+AN+LAP+urea+brown sugar) could improve acetic acid content of cassava residue and reduce the NDF and ADF contents,and which were the lowest and were significantly lower than that of blank group and the control groups (P < 0.05);②Experimental group Ⅱ5 (CT+BS+LAP+urea+brown sugar) could improve the crude protein content in the cassava residue which was significantly higher than that of blank group and the control groups (P < 0.05);③It was favorable to propionic acid production by adding the corresponding strains+urea+brown sugar to the cassava residue fermentation;④Urea and brown sugar were added into cassava residue for improving the nutrition composition during the fermentation process was better than that only urea was added;⑤When the urea was added into the fermentation medium,the crude protein content in cassava residue was significantly increased,when cassava residue fermented quality was evaluate by butyric acid and acetic acid contents,all the groups got to the top of grade.In conclusion,solid-state fermentation using LAB+AN+LAP+urea+brown sugar or CT+BS+LAP+urea+brown sugar could offer an effective alternative to improve the fermentation quality of cassava residue.     

保鲜剂联合热处理对木薯品质及贮藏效果的影响

以华南9号木薯为试验材料,采用不同保鲜剂浸泡经热处理(60℃,5 min)后的木薯,通过测定其贮藏过程中的理化、生化指标来评价不同处理方式对木薯品质及保鲜效果的影响。结果表明:与对照相比,保鲜剂C(1.5%壳聚糖+0.15%柠檬酸+0.25%氯化钙)可显著延缓木薯块根硬度的下降,抑制色泽(L*)值的上升,延缓淀粉的降解和可溶性固形物(TSS)的增加,维持了较高水平的超氧化物歧化酶(Superoxide dismutase,SOD)活性,延缓过氧化物酶(Peroxidase,POD)活性的增加,降低了总酚含量,有效地延长了采后木薯块根的贮藏期,抑制了其品质的劣变。     

木薯杆粉碎还田机的研制

针对木薯收获的需要,研究开发一款木薯茎杆(以下统称木薯杆)粉碎还田机械。根据木薯杆砍伐、收集、粉碎作业的特点,该机器采用拖拉机前悬挂布置方式,由液压系统传递动力,集合木薯杆砍伐、收集、粉碎功能,是木薯全程机械化种植的重要组成部分。     

印度尼西亚用小黄蜂防治木薯水蜡虫害

<正>它们身形很小,甚至没有毒刺,但这些黄蜂却是名副其实的冷血杀手,他们是天然的特警队,减少了害虫对发展中国家最重要的作物——木薯的伤害。印度尼西亚一直受水蜡虫的侵害。水蜡虫形状像药丸,白色绒状昆虫,在过去的6年中,一直在亚洲东南部的田间肆虐。与泰国不同的是,在印度尼西亚,水蜡虫虫害已经影响了约25万hm2的作物,木薯是印度尼     

加快发展甘蔗燃料乙醇——广西北海年产20万吨木薯乙醇厂投产有感

本世纪初，国务院发展燃料乙醇试点建设项目中，吉林60万吨／年（投资28．9亿元）；河南天冠30万吨／年；安徽丰原32万吨年（投资14亿元，前期项目6万吨年规模）；黑龙江华润10万吨／年，大部分以粮食为原料。从2006年起，为了世界粮食紧缺、价格上涨以及生产成本提高，保证粮食安全问题，政府已下紧急通知，我国停止新批粮食（玉米）燃料乙醇企业，     

木薯的综合利用价值

综述了木薯的综合利用值,包括食用价值、饲用价值、工业利用价值、种植价值等,以为木薯的开发利用提供参考。     

广西在印尼投资建生物乙醇厂

印度尼西亚中爪哇省文罗基里县政府邀请来自中国广西南宁的投资商，合作兴建综合工业区。这项工程已经于1月8日开始动工。综合工业区占地200公顷。将有50名南宁市投资商在工业区投资和建立公司。文罗基里县是印尼的木薯主产区。木薯是生物乙醇的主要原料。由于这些年来木薯价格很不稳定，导致农民不愿意大量种植木薯。     

木薯品种比较试验报告

为引导木薯产业向高产、优质、高效方向发展,提高木薯产量、质量和经济效益,引进高产优质新品种是必由之路。为筛选主栽品种,2009年选择了新选048等5个木薯品种进行比较试验,试验表明,新选048、南植99木薯品种产量高,质量好,株高、结薯数、薯径大数、大薯率、产量综合农艺性状优良,木薯淀粉含量高,可在全市作重点推广种植。     

木薯种质基因型与环境互作分析

为加强木薯现有选育材料和引进种质的研究利用,准确评价各种质产量相关性状的稳定性和适应性,以木薯主栽品种华南8号(SC8)和华南205号(SC205)为对照,选用138份选育材料和8份瑞士引进新种质,应用AMMI模型对连续3年的干物质率、收获指数的遗传方差、环境方差和遗传与环境(G×E)互作进行探讨。结果表明:(1)比对照SC8的干物质率和收获指数更高且更加稳定的种质分别有4份和6份,比对照SC205的干物质率和收获指数更高且更加稳定的种质分别有61份和12份;(2)对干物质率的分析中有67份种质比SC8和有132份种质比SC205对不同年度环境的适应性更好,对收获指数的分析中有48份种质比SC8和有28份种质比SC205对不同年度环境适应性更好。AMMI模型很好地解释了木薯干物质率和收获指数的基因型G效应、环境E效应和G×E互作效应。该结果对木薯种质的环境敏感度和种植范围评估提供了依据。