有效的异甲基生产使用工程Aspergillus oryzae的酶尾酒和酵母辅助净化
Satoshi Wakai1, Nanami Nakashima2, Hiroko Tsutsumi3
1Graduate School of Science, Technology, and Innovation, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo 657-8501, Japan; Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Kanagawa 237-0061, Japan.
Enzyme and microbial technology
|June 22, 2025
概括
这项研究设计了Aspergillus oryzae菌株,以产生一种酶尾酒,以有效地从树脂葡萄糖中产生异原. 该过程实现了这种罕见的益生菌分糖的高产量,为商业应用铺平了道路.
科学领域:
- 生物技术是生物技术.
- 酶学 是一种酶学.
- 微生物学 微生物学
背景情况:
- 植物细胞壁的成分西洛格卢干产生异甲糖,这是一种罕见的分糖化合物,具有潜在的益生菌特性.
- 目前的异甲基生产方法效率低下,由于西洛格卢干的复杂结构,阻碍了商业应用.
- 有效的异甲基生成需要对修饰的西洛格卢干进行合作性酶降解.
研究的目的:
- 开发一种高效,可扩展的工艺,从糖中生产异二甲.
- 改造Aspergillus oryzae菌株以提高关键碳水化合物降解酶的产生.
- 为了优化植物衍生的糖甘的酶解水解,以获得最大的异原产量.
主要方法:
- 基因工程 Aspergillus oryzae 产生异甲酸生成酶 (IpeA) 和内葡萄糖酶.
- 培养工程菌株,并从培养超水生物中制备酶尾酒.
- 使用酶尾酒,酶降解塔玛林木糖和塔玛林木种子.
- 使用Saccharomyces cerevisiae处理以清除副产品来净化异原蛋白.
主要成果:
- 来自工程 A. oryzae 菌株的酶尾酒有效地从糖中产生异二甲基.
- 达到约14μg/L的异甲,理论转化率超过90%.
- 使用Saccharomyces cerevisiae有效地去除了葡萄糖和银河糖的副产品.
结论:
- 开发的酶过程使得从西洛葡萄糖中高效地生产异甲.
- 用A. oryzae和S. cerevisiae模仿传统的酒精发酵提供了一个可行的商业化战略.
- 这种方法促进了对其潜在的益生菌应用的异素的可扩展生产.
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