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投稿时间:2023-09-04
投稿时间:2023-09-04
中文摘要: 从来源于水产动物肠道的8 株乳酸菌中筛选富硒活性较好的菌株,并对其抑菌能力、耐胆盐、抗氧化能力及Caco-2 细胞的黏附性进行分析。结果表明:来源于花鲢鱼肠道的菌株ZHL-2 的富硒率高达85.46%,经分子生物学鉴定为植物乳杆菌(Lactiplantibacillus plantarum)。与未富硒菌株ZHL-2 相比,富硒后菌株ZHL-2 完整细胞和破碎细胞提取物清除DPPH 自由基和超氧阴离子的能力分别提高3.67%、3.67%、11.67%、11.00%。富硒后菌株ZHL-2 胆盐耐受能力以及对Caco-2 细胞的黏附数分别增加6.54%和7.34 CFU/个,对大肠杆菌及金黄色葡萄球菌的抑菌圈直径分别增加1.14 mm 和2.89 mm。
Abstract:Strains with better selenium-rich activity were selected from eight lactic acid bacteria(LAB)originating from the intestinal tract of aquatic animals,and their antibacterial ability,bile salt resistance,antioxidant ability,and adhesion to Caco-2 cells were analyzed.The results showed that strain ZHL-2 from the intestinal tract of silver carp had a selenium-rich rate of 85.46% and was identified as Lactiplantibacillus plantarum by molecular biology. Compared with that of strain ZHL-2 without rich selenium,the scavenging ability of DPPH radical and superoxide anion of intact cells and cell-free extracts from selenium-rich strain ZHL-2 increased by 3.67%,3.67%,11.67%,and 11.00%,respectively. The bile salt resistance and adhesion to Caco-2 cells of selenium-rich strain ZHL-2 increased by 6.54% and 7.34 CFU/cell,respectively,and the inhibition zone diameter against Escherichia coli and Staphylococcus aureus increased by 1.14 mm and 2.89 mm.
keywords: intestinal tract of aquatic products lactic acid bacteria screening selenium-rich biological activity
文章编号:202418015 中图分类号: 文献标志码:
基金项目:海参精深加工关键技术研发及产业化(辽自然资发(2021)84 号);辽宁省“兴辽英才计划”青年拔尖人才项目(XLYC1807133)
作者 | 单位 |
张艳芳1,吕欣然1*,武文玉1,白凤翎1,崔方超1,檀茜倩1,励建荣1,3,李英美2 | 1.渤海大学食品科学与工程学院生鲜农产品贮藏加工及安全控制技术国家地方联合工程研究中心,辽宁 锦州 121013;2.达莲食品(锦州)有限公司,辽宁 锦州 121019;3.大连工业大学海洋食品精深加工关键技术省部共建协同创新中心,辽宁 大连 116034 |
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