酿酒科技
釀酒科技
양주과기
LIQUOR-MAKING SCIENCE & TECHNOLOGY
2011年
9期
42-46
,共5页
陶勇%徐占成%李东迅%刘孟华%樊科权%姚开
陶勇%徐佔成%李東迅%劉孟華%樊科權%姚開
도용%서점성%리동신%류맹화%번과권%요개
微生物%窖泥%细菌%群落结构%环境因子%变性梯度凝胶电泳
微生物%窖泥%細菌%群落結構%環境因子%變性梯度凝膠電泳
미생물%교니%세균%군락결구%배경인자%변성제도응효전영
microbe%Pit mud%bacteria%community structure%environmental factor%DGGE
利用PCR-DGGE系统研究了剑南春不同窖龄(2-50年)窖泥的微生物群落结构、种群演替趋势及其与环境因子的相关性。结果表明,2年窖龄窖泥的细菌丰度和多样性指数与5年样品相似,而10年窖龄窖泥的细菌丰度和多样性指数则明显增加,之后的10年基本持平,但50年时又显著下降。相同窖龄的窖泥样品中,中层的物种丰度和多样性指数均高于上层和下层,特别是在2~5年样品中这一趋势更加明显。DGGE和序列分析显示,窖泥中优势种群均分布在厚壁菌门(Phylum Firmicutes)的杆菌纲(Class Bacill)和梭菌纲(Class Clostrida),其中耐酸乳杆菌(Lactobacillus acetotolerans)、芽孢菌(Bacillus fordii)、未培养的瘤胃菌(uncultured Ruminococcaceaebacterium)和梭菌(uncultured Clostridia bacterium)为窖泥样品中的主要优势种群。典型对应分析显示,窖泥微生物群落结构与环境因子具有显著的相关性,其中有效磷、氨氮、pH对微生物群落结构的影响较大,其次是腐殖质,而水分含量的影响较小。
利用PCR-DGGE繫統研究瞭劍南春不同窖齡(2-50年)窖泥的微生物群落結構、種群縯替趨勢及其與環境因子的相關性。結果錶明,2年窖齡窖泥的細菌豐度和多樣性指數與5年樣品相似,而10年窖齡窖泥的細菌豐度和多樣性指數則明顯增加,之後的10年基本持平,但50年時又顯著下降。相同窖齡的窖泥樣品中,中層的物種豐度和多樣性指數均高于上層和下層,特彆是在2~5年樣品中這一趨勢更加明顯。DGGE和序列分析顯示,窖泥中優勢種群均分佈在厚壁菌門(Phylum Firmicutes)的桿菌綱(Class Bacill)和梭菌綱(Class Clostrida),其中耐痠乳桿菌(Lactobacillus acetotolerans)、芽孢菌(Bacillus fordii)、未培養的瘤胃菌(uncultured Ruminococcaceaebacterium)和梭菌(uncultured Clostridia bacterium)為窖泥樣品中的主要優勢種群。典型對應分析顯示,窖泥微生物群落結構與環境因子具有顯著的相關性,其中有效燐、氨氮、pH對微生物群落結構的影響較大,其次是腐殖質,而水分含量的影響較小。
이용PCR-DGGE계통연구료검남춘불동교령(2-50년)교니적미생물군락결구、충군연체추세급기여배경인자적상관성。결과표명,2년교령교니적세균봉도화다양성지수여5년양품상사,이10년교령교니적세균봉도화다양성지수칙명현증가,지후적10년기본지평,단50년시우현저하강。상동교령적교니양품중,중층적물충봉도화다양성지수균고우상층화하층,특별시재2~5년양품중저일추세경가명현。DGGE화서렬분석현시,교니중우세충군균분포재후벽균문(Phylum Firmicutes)적간균강(Class Bacill)화사균강(Class Clostrida),기중내산유간균(Lactobacillus acetotolerans)、아포균(Bacillus fordii)、미배양적류위균(uncultured Ruminococcaceaebacterium)화사균(uncultured Clostridia bacterium)위교니양품중적주요우세충군。전형대응분석현시,교니미생물군락결구여배경인자구유현저적상관성,기중유효린、안담、pH대미생물군락결구적영향교대,기차시부식질,이수분함량적영향교소。
Bacterial community succession in pit mud of different age (from 2 years to 50 years)in Jiannanchun Group and its correlations with environmental factors were systematically studied by PCR-DGGE methods. The results were as follows: bacterial abundance and bacterial diversi- ty index displayed high similarity between 2-year-old and 5-year-old pit mud samples, however, they increased obviously in 10-year-old pit mud samples and then kept stable in 20-year-old pit mud samples, and then dramatically declined in 50-year-old pit mud samples; for pit mud of the same age, bacterial abundance and bacterial diversity index in medium layer were higher than that in the upper or lower layer, especially for pit mud samples of 2 ~5 years; DGGE profile and sequences analysis indicated that the dominant bacterial populations in pit mud samples were mainly distributed in Class Bacill and Clostrida of Phylum Firmicutes. The predominant bacteria included Lactobacillus acetotoleraus, Bacillus fordii, uncultured Ruminocaccaceae bacterium, and uncultured Clostriclia bacterium; CCA results revealed that there was significant correlations between environmental factors and bacterial community in pit mud. Among all environmental factors, available phosphorous, ammonia nitrogen and pH had stronger influence on bacterial community structure in pit mud, then followed by humics and moisture content the least.