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抗冻性面包酵母FTY-5与普通面包酵母细胞构成成分的比较

Comparison of Cell Components in Freeze-tolerance Baker’s Yeast FTY-5 with Common Yeast

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【作者】 李楠张坤生李飞叶莹李浩奚震张刚刘丽娟杨晴朱蕾

【Author】 Li Nan1 Zhang Kunsheng1 Li Fei2 Ye Ying3 Li Hao3 Xi Zhen3 Zhang Gang3 Liu Lijuan1 Yang Qing1 Zhu Lei1 1(Department of Food Science and Engineering,Tianjin University of Commerce, Tianjin,300134,China) 2(School of Food Science and Bio-engineering,Tianjin University of Science and Technology,Tianjin,300222,China) 3(Tianjin Research Institute of Industrial Microbiology,Tianjin,300221,China)

【机构】 天津商学院食品科学与工程系天津科技大学食品科学与生物工程学院天津市工业微生物所天津商学院食品科学与工程系 天津300134 硕士副教授天津300134300222300221300134

【摘要】 利用GC、HPLC和氨基酸分析仪 ,对抗冻性面包酵母FTY 5和普通面包酵母的细胞构成成分 ,即海藻糖含量、脂肪酸组成和氨基酸组成进行了分析和比较。结果表明 ,FTY -5细胞内海藻糖含量是普通酵母含量的4 . 6倍。从FTY- 5和普通酵母细胞的脂肪中检出了 7个已知组分 :肉豆蔻酸C14 :0 ,棕榈油酸C16:1,棕榈酸C16:0 ,亚油酸C18:2 ,油酸C18:1,硬脂酸C18:0 和花生酸C2 0 :0 ,FTY- 5中亚油酸的含量较高 ,其含量为 9. 6 7% ,高于普通酵母 0 . 6 7%。FTY- 5与普通酵母细胞氨基酸组成最大的不同点是前者有酪氨酸存在 ,而后者没有检出。

【Abstract】 In the present study, the cell components, including trehalose, fatty acid components and amino acid in the FTY-5 were qualitatively and quantitatively determined and compared with the common baker’s yeast by using HPLC, GC and amino acid analyzer. The results suggested that trehalose in FTY-5 contained 4.6 times more than that in common yeast. And seven kinds of known fatty acid components were determined, including myristic acid C_ 14:0, palmitoleic acid C_ 16:1, palmitic acid C_ 16:0, linoleic acid C_ 18:2, oleic acid C_ 18:1,stearic acid C_ 18:0, and arachidic acid C_ 20:0. The content of linoleic acid in FTY-5 was 9.67%, which was much more than 0.67% in common yeast. The analysis of amino acids in FTY-5 and common yeast showed that tyrosine was found in the former one, but not in the latter.

【基金】 天津市科委重点科技项目 (No.0 4 31 830 1 1 )
  • 【文献出处】 食品与发酵工业 ,Food and Fermentation Industries , 编辑部邮箱 ,2005年02期
  • 【分类号】TS213.2
  • 【被引频次】7
  • 【下载频次】186
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