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泰国阿萨姆茶（品种）叶片上可培养细菌群落及分离出的 种的人类益生菌潜力

Culturable Bacterial Community on Leaves of Assam Tea ( var. ) in Thailand and Human Probiotic Potential of Isolated spp.

作者信息

Rungsirivanich Patthanasak, Supandee Witsanu, Futui Wirapong, Chumsai-Na-Ayudhya Vipanee, Yodsombat Chaowarin, Thongwai Narumol

机构信息

Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.

Graduate School, Chiang Mai University, Chiang Mai 50200, Thailand.

出版信息

Microorganisms. 2020 Oct 14;8(10):1585. doi: 10.3390/microorganisms8101585.

DOI:10.3390/microorganisms8101585
PMID:33066699
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7602384/
Abstract

Assam tea plants ( var. ) or Miang are found in plantations and forests of Northern Thailand. Leaf fermentation has been performed for centuries, but little information is available about their associated microbial community. One hundred and fifty-seven bacterial isolates were isolated from 62 Assam tea leaf samples collected from 6 provinces of Northern Thailand and classified within the phyla of Firmicutes, Actinobacteria, and Proteobacteria. Phayao and Phrae provinces exhibited the highest and the lowest bacterial diversities, respectively. The bacterial community structural pattern demonstrated significant differences between the west and the east sides. Since some spp. have been reported to be involved in fermented Miang, spp. isolated in this study were chosen for further elucidation. ML122-2 exhibited a growth inhibitory effect against ATCC 25923 and MRSA DMST 20625, and the highest survival ability in simulated gastric and intestinal fluids (32.3 and 99.7%, respectively), autoaggregation (93.2%), cell surface hydrophobicity (50.0%), and bacterial adherence with Vero cells (75.8% of the control FM03-1). This ML122-2 is a promising probiotic to be used in the food industry and seems to have potential antibacterial properties relevant for the treatment of antibiotic-resistant infections.

摘要

阿萨姆茶树（变种）或缅甸茶在泰国北部的种植园和森林中被发现。叶片发酵已经进行了几个世纪，但关于其相关微生物群落的信息却很少。从泰国北部6个省份采集的62份阿萨姆茶叶样本中分离出157株细菌菌株，并将它们归类于厚壁菌门、放线菌门和变形菌门。帕尧府和帕府的细菌多样性分别最高和最低。细菌群落结构模式显示东西两侧存在显著差异。由于据报道一些[具体菌种]参与了发酵缅甸茶，本研究中分离出的[具体菌种]被选作进一步研究。ML122 - 2对金黄色葡萄球菌ATCC 25923和耐甲氧西林金黄色葡萄球菌DMST 20625具有生长抑制作用，并且在模拟胃液和肠液中的存活率最高（分别为32.3%和99.7%），自凝能力为93.2%，细胞表面疏水性为50.0%，与Vero细胞的细菌黏附率为（对照FM03 - 1的75.8%）。这种ML122 - 2有望用于食品工业的益生菌，并且似乎具有与治疗抗生素耐药性感染相关的潜在抗菌特性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/dc0c74a0b481/microorganisms-08-01585-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/a18203e4d198/microorganisms-08-01585-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/7063edac8668/microorganisms-08-01585-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/6efc3540c6f2/microorganisms-08-01585-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/6399e69a78a4/microorganisms-08-01585-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/f9303e450de0/microorganisms-08-01585-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/dc0c74a0b481/microorganisms-08-01585-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/a18203e4d198/microorganisms-08-01585-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/7063edac8668/microorganisms-08-01585-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/6efc3540c6f2/microorganisms-08-01585-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/6399e69a78a4/microorganisms-08-01585-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/f9303e450de0/microorganisms-08-01585-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b75a/7602384/dc0c74a0b481/microorganisms-08-01585-g006.jpg

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