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玉米提取物对4株猪源乳酸杆菌耐酸能力的影响

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摘要 采用模拟胃酸环境,探讨玉米提取物对4株猪源乳酸杆菌耐酸性能的影响。结果表明:在pH2.5模拟胃酸环境中处理3h,约氏乳酸杆菌(L.johnsonii)JJB3、SNZ10,罗伊氏乳酸杆菌(L.reutert)MNZ8、KNZ4分别经90min、30min、60min、30min完全失活;添加玉米提取物后,4株乳酸杆菌在pH2.5模拟胃酸环境中处理3h后,活菌数均未有显著变化,成活率达97.37%~100%。进一步的单因子分析表明,葡萄糖浓度增加可显著提高乳酸杆菌的耐酸性,游离氨基氮含量对乳酸杆菌成活率几乎无影响。结果证明,玉米提取物对4株乳酸杆菌耐受模拟胃酸环境具有很好的保护作用,可用作提高乳酸杆菌制剂成活率的过胃保护剂。
出处 《畜牧与兽医》 北大核心 2009年第12期44-47,共4页 Animal Husbandry & Veterinary Medicine
基金 教育部长江学者和创新团队发展计划(IRT0555) 四川省教委应用基础项目(07ZA065) 教育部长江学者和创新团队发展计划(IRT0848)
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