Isolation, Characterization and Quantitative Enumeration of Lactic Acid Bacteria from Human Faeces

Shama Parveen Siddique
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引用次数: 1

Abstract

Human Faeces (HF) is a solid waste material that is secreted as left amount after digestion of food inside the small intestine of the body. It contains large number of viruses, bacteria, fungi, actinomycetes, archaebacteria etc of which Lactic Acid Bacteria (LAB) are very common and play an important role in digestion and immunity. Hence, LAB were isolated and enumerated from HFusing standard protocol in the present study to find out the qualitative and quantitative distribution of LAB in gut microbiome. LAB were isolated using MRS agar medium under anaerobic conditions and was found that Lactobacillus lactis, L. Acidophilus, L. fermentum and Enterococcus faecium were the dominant species and the populations varied from 3.5 x 106 to 4.5 x 1010CFU/mL. It shows that good populations of LAB in gut microbiome survive under anaerobic conditions. LAB have great efficiency to resist against antibiotics. Such species of LAB should be commercialized and marketed at a global stage so that problems related to imbalance in gut microbiome can be solved.
人粪便中乳酸菌的分离、鉴定和定量计数
人体粪便(HF)是一种固体废物,在人体小肠内消化食物后以剩余量分泌。它含有大量的病毒、细菌、真菌、放线菌、古细菌等,其中乳酸菌(LAB)非常常见,在消化和免疫中发挥着重要作用。因此,在本研究中,使用标准方案从HFS中分离和列举了LAB,以了解LAB在肠道微生物组中的定性和定量分布。在厌氧条件下使用MRS琼脂培养基分离LAB,发现乳杆菌、嗜酸乳杆菌、发酵乳杆菌和粪肠球菌是优势种,种群数量从3.5 x 106到4.5 x 1010CFU/mL不等。这表明肠道微生物组中良好的LAB种群在厌氧条件下存活。LAB对抗生素有很高的抵抗力。此类LAB应在全球范围内进行商业化和营销,以解决与肠道微生物组失衡有关的问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Bioscience Biotechnology Research Communications
Bioscience Biotechnology Research Communications BIOTECHNOLOGY & APPLIED MICROBIOLOGY-
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