The paper reported antimicrobial function of different trees species in woodland along the Grand Canal, Yangzhou, China, at 16:30-17:00, Sep 5, 2004. The tested result showed that in different communities of Platyclad...The paper reported antimicrobial function of different trees species in woodland along the Grand Canal, Yangzhou, China, at 16:30-17:00, Sep 5, 2004. The tested result showed that in different communities of Platycladus orientalis,Osmanthus fragrans, Cedrus deodara, Albizzia julibrissin, Cinnamomum camphora had antibacterial action. The content of pollutant bacteria in the forest atmosphere (1.5～1.8 m above the land) decreased obviously,which amounted to 23.59%～99.78% compared with the control in open area and 10.08%～99.71% compared with the near communities away from {15 m} distance. There was nat antifungal (against mold) effect in general; only two tree communities for Osmanthus fragrans (decreased 40.66% compared with the near 15 m distance) and P.orientalis (decreased 24.73% than in open area) had less antifungal effect. At the same time, the antimicrobial activities were tested by the extractive volatile of foliage for more tree species in lab. The results showed that antibacterial activities to against Staphalococus aureus and Escherichia coli were the highest in P.orientalis , Manglietia yuyuanensis and C.camphora , and higher in Koelreuteria bipinnata, Viburnum macrocephalum, Metasequoia glyptostroboides, Eriobotrya japonica, Ginkgo biloba, C.deodara, Magnolia grandiflora, Sabina chinensis. Most of the tree species tested had less antifungal activities against Fusarium graminerum and Glomerella cingulata. While Ginkgo biloba, Cinnamomum camphora, S.chinensis, Elaeocarpus sylvestris and C.deodara had higher antifungal activities against G.cingulata than others. The P.orientalis, C.camphora, S.chinensis Magnolia grandiflor, G.biloba, Acer mono, Acer palmatum had higher antifungal activities against F.graminerum than others.The research results recognized that the suitable cultivated tree species in cities were P.orientalis, C.deodara, C.camphora and M.glyptostroboides.展开更多
窖龄是影响浓香型白酒品质和风格的关键因素,在优化FISH(Fluorescence in situ hybridization)技术预处理条件的基础上,结合荧光显微镜的可视化信息,探究了不同窖龄浓香型白酒窖池中窖泥的细菌、古菌数量随窖龄变化的特征。结果表明,不...窖龄是影响浓香型白酒品质和风格的关键因素,在优化FISH(Fluorescence in situ hybridization)技术预处理条件的基础上,结合荧光显微镜的可视化信息,探究了不同窖龄浓香型白酒窖池中窖泥的细菌、古菌数量随窖龄变化的特征。结果表明,不同窖龄窖泥中细菌与古菌的数量存在显著差异(p<0.05),随着窖龄的增长有不同程度的增加。试验窖池窖泥中细菌和古菌数量最低,分别为0.82×109cells/g和0.78×109cells/g,300年窖池窖泥中细菌数量最高,为11.19×109cells/g,100年窖池窖泥中古菌数量最高,为12.61×109cells/g。FISH技术能较真实地反映出窖池中细菌与古菌的生长信息,为浓香型白酒窖池微生物群落结构的研究提供了一种快速、有效的检测手段。同时,窖池中微生物群落结构组成的研究,对新窖老熟工艺及名优白酒的生产均有着积极的指导意义。展开更多
文摘The paper reported antimicrobial function of different trees species in woodland along the Grand Canal, Yangzhou, China, at 16:30-17:00, Sep 5, 2004. The tested result showed that in different communities of Platycladus orientalis,Osmanthus fragrans, Cedrus deodara, Albizzia julibrissin, Cinnamomum camphora had antibacterial action. The content of pollutant bacteria in the forest atmosphere (1.5～1.8 m above the land) decreased obviously,which amounted to 23.59%～99.78% compared with the control in open area and 10.08%～99.71% compared with the near communities away from {15 m} distance. There was nat antifungal (against mold) effect in general; only two tree communities for Osmanthus fragrans (decreased 40.66% compared with the near 15 m distance) and P.orientalis (decreased 24.73% than in open area) had less antifungal effect. At the same time, the antimicrobial activities were tested by the extractive volatile of foliage for more tree species in lab. The results showed that antibacterial activities to against Staphalococus aureus and Escherichia coli were the highest in P.orientalis , Manglietia yuyuanensis and C.camphora , and higher in Koelreuteria bipinnata, Viburnum macrocephalum, Metasequoia glyptostroboides, Eriobotrya japonica, Ginkgo biloba, C.deodara, Magnolia grandiflora, Sabina chinensis. Most of the tree species tested had less antifungal activities against Fusarium graminerum and Glomerella cingulata. While Ginkgo biloba, Cinnamomum camphora, S.chinensis, Elaeocarpus sylvestris and C.deodara had higher antifungal activities against G.cingulata than others. The P.orientalis, C.camphora, S.chinensis Magnolia grandiflor, G.biloba, Acer mono, Acer palmatum had higher antifungal activities against F.graminerum than others.The research results recognized that the suitable cultivated tree species in cities were P.orientalis, C.deodara, C.camphora and M.glyptostroboides.
文摘窖龄是影响浓香型白酒品质和风格的关键因素,在优化FISH(Fluorescence in situ hybridization)技术预处理条件的基础上,结合荧光显微镜的可视化信息,探究了不同窖龄浓香型白酒窖池中窖泥的细菌、古菌数量随窖龄变化的特征。结果表明,不同窖龄窖泥中细菌与古菌的数量存在显著差异(p<0.05),随着窖龄的增长有不同程度的增加。试验窖池窖泥中细菌和古菌数量最低,分别为0.82×109cells/g和0.78×109cells/g,300年窖池窖泥中细菌数量最高,为11.19×109cells/g,100年窖池窖泥中古菌数量最高,为12.61×109cells/g。FISH技术能较真实地反映出窖池中细菌与古菌的生长信息,为浓香型白酒窖池微生物群落结构的研究提供了一种快速、有效的检测手段。同时,窖池中微生物群落结构组成的研究,对新窖老熟工艺及名优白酒的生产均有着积极的指导意义。
