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Advance in thermal stability and mechanism of phytase
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- Author:
- No author available
- Journal Title:
- FEED INDUSTRY
- Issue:
- 22
- DOI:
- 10.3969/j.issn.1001-991X.2005.22.006
- Key Word:
- No keyword available
Abstract： @@ 植酸是谷物、豆类和油料等作物中磷和肌醇的主要存贮形式[1],同时对保持机体磷的平衡起着重要的作用.以植酸磷形式存在的磷因单胃动物体内缺乏能分解植酸磷的酶而难以被利用,从而造成许多问题:①磷资源的浪费.一方面饲料中的磷得不到有效利用:另一方面则需加入大量无机磷以满足动物对磷的需求,提高了生产成本[2].②高磷粪便对环境的污染.饲料中85%的植酸磷被动物直接排出体外,使周围的土壤和水受到严重污染[2].此外,植酸磷还是抗营养因子,使得单胃动物不能有效利用营养物质,从而降低了禽畜的生产效益[3].
- [1]姚斌,范云六.植酸酶的分子生物学与基因工程[J].2000,(1).
- [2]邢自力,陈华友,谢芳,等.植酸酶及其热稳定性研究进展[J].2003,(5).
- [3]黄遵锡,赵明哲,李凤梅,等.无花果曲霉（A.ficuum）植酸酶功能区基因的 克隆及生物学活性的测定[J].2001,(4).
- [4]段学辉,孙京超,曾文兵.甲醇酵母植酸酶的热稳定性[J].2003,(1).
- [5]L, Pasamontes,M, Haiker,M, Wyss,etc.Gene cloning, purification, and characterization of a heat-stable phytase from the fungus Aspergillus fumigatus.[J].1997,63.
- [6]王红宁,黄勇,陈惠,等.饲用微生物植酸酶的研究进展[J].1998,(5).
- [7]彭日荷,熊爱生,李贤,等.应用毕氏酵母高效表达耐高温植酸酶[J].2002,(6).
- [8]Wyss M.The consensus concept for thermostability engineering of proteins: further proof of concept.[J].2002,15(5).
- [9]Suh HJ,Kim JM,Choi YM.Purification and properties of extracellular phytase from Bacillus sp. KHU-10.[J].2001,20(4).
- [10]T S, Nelson,T R, Shieh,R J, Wodzinski,etc.The availability of phytate phosphorus in soybean meal before and after treatment with a mold phytase.[J].1968,47.
- [11]Casey A.,Walsh G..Purification and characterization of extracellular phytase from Aspergillus niger ATCC 9142[J].2003,86(2).