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描述Bifidobacterium bifidum在乳清蛋白脂缩物上的生长和代谢

You-Tae Kim¹, Yu-Ping Huang¹, Gulustan Ozturk²

¹Department of Food Science and Technology, University of California-Davis, Davis, CA 95616.

Journal of dairy science

|January 9, 2025

概括

乳清蛋白脂缩物 (WPPC) 支持Bifidobacterium bifidum的生长,作为唯一的碳来源. 这种副产品增强了婴儿配方奶粉和共生菌的益生菌潜力.

科学领域:

微生物学微生物学
生物化学生物化学
食品科学食品科学食品科学

背景情况:

乳清蛋白脂缩物 (WPPC) 是乳清蛋白分离物生产的副产品.
WPPC 含有来自牛奶脂肪球体膜的糖结合物,表明它可能是营养来源.
双杆菌是母乳养婴儿的关键肠道微生物.

研究的目的:

研究WPPC作为Bifidobacterium bifidum生长的唯一碳来源.
了解B. bifidum对WPPC的代谢反应.
评估WPPC在共生应用和婴儿营养方面的潜力.

主要方法:

培养B. bifidum使用WPPC作为唯一的碳来源.
在B. bifidum.中分析甘氨基酸酶和酸酶的基因表达.
用特定的WPPC甘氨酸成分进行生长研究.

主要成果:

WPPC支持Bifidobacterium bifidum的生长. 这是一个非常好的方法.
在B. bifidum中,WPPC的增长诱导了细胞外甘氨酸酸酶和酸酶.
来自WPPC预激活的B. bifidum的N-乙葡萄糖胺或N-乙黄糖胺,用于增强母乳寡糖的增长.
酸是由B. bifidum sialidases从WPPC中释放出来的.

结论:

WPPC可以作为B. bifidum的唯一碳来源,这是一个关键的益生菌物种.
WPPC促进了参与甘氨酸和酸代谢的酶的表达.
WPPC的成分可以提高其他有益的牛奶寡糖的利用率.
作为婴儿配方和共生菌的生物活性成分,WPPC显示出前景.

关键词:

这种细菌是Bifidobacterium.葡萄糖合物葡萄糖合物牛奶脂肪球体的膜膜.酸是酸的一种.

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