| PVP K-30对嗜酸乳杆菌的冻干保护研究 |
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| 引用本文： | 苏安分,霍贵成,杨丽杰.PVP K-30对嗜酸乳杆菌的冻干保护研究[J].食品科技,2011(7):250-254. |
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| 作者姓名： | 苏安分 霍贵成 杨丽杰 |
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| 作者单位： | 东北农业大学乳品科学教育部重点实验室; |
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| 基金项目： | 国家高技术研究863计划项目(2006AA10Z344) |
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| 摘 要： | 聚乙烯吡咯烷酮K-30,简称PVP K-30,是一种新型的食品安全添加剂,在食品产业中受到广泛关注。以嗜酸乳杆菌冻干存活率为衡量指标,对包括PVP K-30在内的13种冻干保护剂进行了单因素保护效果的比较,并对筛选的5种保护剂进行L16(45)多因素复合实验,结果表明,13种单一保护剂对菌体存活率均具有一定的保护作用,复配保护剂的效果明显高于单一保护剂;PVP K-30可明显增强脱脂乳、海藻糖的保护能力;以4%PVP K-30、20%脱脂乳、6%海藻糖、0.5%谷氨酸钠和4%甘油组成的复配保护剂效果最佳,可使嗜酸乳杆菌真空冷冻干燥后存活率达到93.33%。
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| 关 键 词： | PVP K-30 嗜酸乳杆菌 冷冻干燥 保护剂 |
Protection of PVP K-30 to freeze-dried Lactobacillus acidophilus |
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| SU An-fen,HUO Gui-cheng﹡,YANG Li-jie.Protection of PVP K-30 to freeze-dried Lactobacillus acidophilus[J].Food Science and Technology,2011(7):250-254. |
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| Authors: | SU An-fen HUO Gui-cheng﹡ YANG Li-jie |
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| Affiliation: | (Key Lab of Dairy Science,Northeast Agricultural University,Ministry of Education,Harbin 150030) |
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| Abstract: | Polyvinyl Pyrrolidone K-30,abbreviated to PVP K-30,as a new safety food additive,is extensively used in food domain.Taking the survival rate of Lactobacillus acidophilus as measure,research on freeze-dried protective capability of PVP K-30,comparing with other 12 types of common used cryoprotectants,four cryoprotectants were gotten to compound with PVP K-30,L16(45)orthogonal test of five cryoprotectants were performed.The result shows that the protecting effect of composite cryoprotectants was obviously bet... |
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| Keywords: | PVP K-30 Lactobacillus acidophilus freeze-dry cryoprotectant |
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