|本期目录/Table of Contents|

[1]尚洁.木蹄层孔菌产锰过氧化物酶的碳氮源优化及酶学性质[J].江苏农业科学,2019,47(15):273-277.
 Shang Jie,et al.Optimization of carbon and nitrogen sources and enzymatic properties of manganese peroxidase produced by Fomes fomentarius[J].Jiangsu Agricultural Sciences,2019,47(15):273-277.
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木蹄层孔菌产锰过氧化物酶的碳氮源优化及酶学性质(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期数:
2019年第15期
页码:
273-277
栏目:
资源与环境
出版日期:
2019-09-03

文章信息/Info

Title:
Optimization of carbon and nitrogen sources and enzymatic properties of manganese peroxidase produced by Fomes fomentarius
作者:
尚洁
北方民族大学生物科学与工程学院,宁夏银川 750021
Author(s):
Shang Jieet al
关键词:
木蹄层孔菌锰过氧化物酶碳氮源酶学性质
Keywords:
-
分类号:
S182
DOI:
-
文献标志码:
A
摘要:
锰过氧化物酶是环境工程研究领域广泛关注的酶之一,它能够促进生物燃料合成,促使木质素和污染物降解等工业生物过程更好进行。研究木蹄层孔菌产锰过氧化酶的最适碳源和氮源,揭示锰过氧化物酶的培养方式、最适pH值和pH耐受性、最适温度和温度耐受性、金属离子对其影响等特征。木蹄层孔菌在静置培养时产锰过氧化物酶显著高于振荡培养。小麦麸皮23 g/L和蛋白胨2 g/L是最佳组合的碳源和氮源。锰过氧化物酶在pH值为4.5或温度为50 ℃时酶活力最高。酶在pH值4.0~4.5或温度30 ℃以下处理24 h后,仍可保持80%以上的酶活力。底物为愈创木酚时,锰过氧化物酶的Km值为0.34 mmol/L,Vmax为0.12 mmol/L·min。当添加的金属离子浓度为1 mmol/L,与对照相比,K+、Ca2+、Ba2+、Co2+和Na+可极显著抑制MnP活力。当添加的金属离子浓度为10 mmol/L,与对照相比,除Mg2+外,其他金属离子均能极显著抑制酶的活力。Mg2+ 1、10 mmol/L对酶的活力没有影响。木蹄层孔菌适合在静置培养时产锰过氧化物酶,最适碳源和氮源分别为小麦麦麸和蛋白胨,酶在室温和偏酸性环境中耐受性较好,并对Mg2+有较好耐受性。
Abstract:
-

参考文献/References:

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相似文献/References:

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[2]解修超,罗强,路宏朝,等.陕西佛坪木蹄层孔菌的挥发性成分及生物活性[J].江苏农业科学,2018,46(1):126.
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备注/Memo

备注/Memo:
收稿日期:2018-03-30
基金项目:北方民族大学校级科研项目(编号:2018XYZSK05);宁夏自然科学基金(编号:NZ17110)。
作者简介:尚洁(1979—),女,宁夏中卫人,博士,副教授,主要从事白腐真菌木质纤维素降解研究。E-mail:shangjie@126.com。
更新日期/Last Update: 2019-08-05