CN1321180C - 一种提高微生物法制备的过氧化氢酶保存稳定性的方法 - Google Patents

一种提高微生物法制备的过氧化氢酶保存稳定性的方法 Download PDF

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CN1321180C
CN1321180C CNB2004100146315A CN200410014631A CN1321180C CN 1321180 C CN1321180 C CN 1321180C CN B2004100146315 A CNB2004100146315 A CN B2004100146315A CN 200410014631 A CN200410014631 A CN 200410014631A CN 1321180 C CN1321180 C CN 1321180C
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catalase
enzyme
liquid
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present
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CN1563373A (zh
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陈坚
王明星
李寅
华兆哲
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Jiangnan University
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Jiangnan University
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Abstract

一种提高微生物法制备的过氧化氢酶保存稳定性的方法,涉及纺织工业清洁生产所用的一种生物酶。本发明是采用购自日本NBRC(原日本“阪发酵研究所”)的一株金黄色嗜热子囊菌(Thermoascus aurantiacus)IFO9862作为出发菌株,经液体深层发酵制备的过氧化氢酶,经超滤浓缩后添加一定量的稳定剂氯化钠,或明胶,或甘油,在40℃保存60d,其酶活保留率在90%以上。本发明所涉及的稳定剂价格低廉,可解决液体过氧化氢酶易失活的问题,显著提高了酶的稳定性。

Description

一种提高微生物法制备的过氧化氢酶保存稳定性的方法
技术领域
本发明为一种提高微生物法制备的过氧化氢酶保存稳定性的方法。涉及纺织工业清洁生产所用的一种生物酶。
背景技术
过氧化氢是对现今所有来自植物或动物的天然纤维使用最为普遍的漂白剂,其工艺在生态上可接受,在经济上可行。因此过氧化氢漂白或精练的“无氯漂白”工艺正得到越来越广泛的应用。但是在染浴中若存在过氧化氢,会造成对氧化敏感的活性染料褪色。已经证明,即使染料分子较小的改变都会导致色泽的消失。由于严格的质量要求,即使染色织物上有微小的色泽改变,在商业上都不能接受。因此漂白过程一旦结束,为保证后道染色的安全性,必须将氧漂后残留的过氧化氢去除干净,以避免在其后的染色过程发生问题。传统工艺有不尽人意之处:如需多次升温、洗涤,并可能带入有毒和难降解的物质。过氧化氢酶反应速率非常快:在最适条件下,每摩尔过氧化氢酶在一分钟内可分解5百万摩尔过氧化氢。因此,在染整工艺中使用过氧化氢酶替代多次清洗及化学还原剂去除漂白液中残留的H2O2,具有很大的经济优势和环保优势。然而由于液体过氧化氢酶易失活,在一定程度上限制了它的广泛应用。
发明内容
本发明的目的是提供对于过氧化氢酶保存效果较好的稳定剂。使用本发明稳定剂可解决液体过氧化氢酶易失活的问题,显著提高了酶的稳定性。
本发明的技术方案,采用购自日本NBRC(原日本“阪发酵研究所”)的一株金黄色嗜热子囊菌(Thermoascus aurantiacus)IFO9862作为出发菌株,经液体深层发酵制备的过氧化氢酶,酶活为2000U/mL,将发酵液抽滤去除菌体后经超滤浓缩10倍,酶活为20000U/mL,分别加入稳定剂氯化钠15-25mmol/L、或明胶0.4-0.6g/L、或甘油80-100g/L,在40℃保存60d,其酶活保留率在90%以上。
本发明的有益效果:
在成本方面:所涉及稳定剂价格低廉,用量适中。
在产品品质方面:由于添加了适合液体过氧化氢酶保存的稳定剂,较大程度地改善了该酶的稳定性,在40℃保存60d,其酶活保留率仍在90%以上。
具体实施方式
实施例1
经液体深层发酵制备的过氧化氢酶,抽滤去除菌体,酶活为2000U/mL,将其置于40℃保存30d和60d,其酶活保留率分别为21.3%和2.4%。将其进行超滤浓缩10倍后,酶活为20000U/mL,置于40℃保存30d和60d,其酶活保留率分别为74.7%和9.6%。
实施例2
向超滤后的酶液添加稳定剂氯化钠20mmol/L,在40℃保存60d,其酶活保留率为94.0%。
实施例3
向超滤后的酶液添加稳定剂明胶0.5g/L,在40℃保存60d,其酶活保留率为93.9%。
实施例4
向超滤后的酶液添加稳定剂甘油90g/L,在40℃保存60d,其酶活保留率为90.8%。

Claims (1)

1.一种提高微生物法制备的过氧化氢酶保存稳定性的方法,其特征是采用购自日本NBRC的一株金黄色嗜热子囊菌(Thermoascus aurantiacus)IFO9862作为出发菌株,经液体深层发酵制备的过氧化氢酶,将发酵液抽滤去除菌体后经超滤浓缩10倍,分别加入稳定剂氯化钠15-25mmol/L、或甘油80-100g/L,在40℃保存60d,其酶活保留率在90%以上。
CNB2004100146315A 2004-04-09 2004-04-09 一种提高微生物法制备的过氧化氢酶保存稳定性的方法 Expired - Fee Related CN1321180C (zh)

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CN100434515C (zh) * 2005-12-23 2008-11-19 上海复星长征医学科学有限公司 酶复合稳定剂
SG148934A1 (en) 2007-06-11 2009-01-29 Novozymes As A process for combined biopolishing and bleach clean-up
US8293221B2 (en) * 2008-10-03 2012-10-23 E. I. Du Pont De Nemours And Company Enzymatic peracid generation formulation
CN101955923B (zh) * 2010-09-30 2012-05-23 江南大学 一种提高过氧化氢酶存储稳定性的方法
EP3553172B1 (en) 2012-08-16 2022-11-23 Novozymes A/S Method for treating textile with endoglucanase
WO2014086659A2 (en) 2012-12-06 2014-06-12 Ahmedabad Textile Industry's Research Association Method for enzymatical preparation of textiles
CN105209508A (zh) 2013-03-15 2015-12-30 路博润先进材料公司 衣康酸聚合物
CN103243566B (zh) * 2013-05-25 2015-03-25 上海秋橙新材料科技有限公司 维棉混纺织物生物酶前处理方法
CN103266495B (zh) * 2013-05-25 2015-08-05 上海秋橙新材料科技有限公司 棉涤混纺织物生物酶前处理方法
JP7071039B2 (ja) 2014-03-14 2022-05-18 ルブリゾル アドバンスド マテリアルズ, インコーポレイテッド イタコン酸ポリマーおよびコポリマー
CN105624140A (zh) * 2016-03-29 2016-06-01 常州大学 一种提高过氧化氢酶存储稳定性的方法

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US4596757A (en) * 1985-04-05 1986-06-24 American Hoechst Corporation Photopolymerizable dual transfer negative working color proofing system

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US4543326A (en) * 1981-11-12 1985-09-24 Wako Pure Chemical Industries, Ltd. Stabilization of oxidase
US4596757A (en) * 1985-04-05 1986-06-24 American Hoechst Corporation Photopolymerizable dual transfer negative working color proofing system

Non-Patent Citations (1)

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