CN103555705A - 一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法 - Google Patents

一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法 Download PDF

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CN103555705A
CN103555705A CN201310573620.XA CN201310573620A CN103555705A CN 103555705 A CN103555705 A CN 103555705A CN 201310573620 A CN201310573620 A CN 201310573620A CN 103555705 A CN103555705 A CN 103555705A
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diacetylmuramidase
styracin
negative bacteria
lysozyme
modifying
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曹栋
杨曼丽
史苏佳
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Jiangnan University
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    • C12N9/2402Hydrolases (3) acting on glycosyl compounds (3.2) hydrolysing O- and S- glycosyl compounds (3.2.1)
    • C12N9/2462Lysozyme (3.2.1.17)
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    • C12Y302/00Hydrolases acting on glycosyl compounds, i.e. glycosylases (3.2)
    • C12Y302/01Glycosidases, i.e. enzymes hydrolysing O- and S-glycosyl compounds (3.2.1)
    • C12Y302/01017Lysozyme (3.2.1.17)

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Abstract

一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,属于贮藏保鲜技术领域。本发明通过肉桂酸对溶菌酶进行修饰,经肉桂酸修饰的溶菌酶提高了溶菌酶抑制革兰氏阴性菌能力,拓宽了溶菌酶的抗菌谱。

Description

一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法
技术领域
一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,属于贮藏保鲜技术领域。
技术背景
溶菌酶是一种由129个氨基酸组成的单体蛋白,是一种糖苷水解酶,分子量14400左右,等电点11左右。化学性质十分稳定,PH值在1.2~11.3范围内剧烈变动时,结构几乎不变,在酸性环境中对热的稳定性也很强。溶菌酶具有抗菌,抗病毒,清除坏死组织,加快创口修复再生等功能,在食品和医药工业具有广泛应用。但是天然的溶菌酶为非广谱抗菌剂,主要作用于革兰氏阳性细菌,其作用机理为能够水解细胞壁的主要成分肽聚糖,而革兰氏阴性菌细胞壁中肽聚糖含量很少,且被一层较厚的脂多糖类物质所覆盖,所以对革兰氏阴性细菌几乎没有作用,极大的限制了溶菌酶作为天然防腐剂的推广,为了改变这种局限性,一些学者通过改性研究以实现天然溶菌酶对革兰氏阴性细菌的抑制作用。本发明使用肉桂酸对溶菌酶进行修饰,提高了溶菌酶抑制革兰氏阴性菌的能力,拓宽了溶菌酶的抗菌谱。
发明内容
本发明的技术方案:本发明的目的在于提供一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,取40mg肉桂酸溶解于3mL5M的NaOH溶液中,用5M HCl调PH至7.5左右,然后加入去离子水至8mL;再向该溶液中加入160mg的EDAC(碳二亚胺),完全溶解后,于室温下静止1h;再加入40mg溶菌酶,混合物在30℃恒温水浴中搅拌反应24h,反应结束后,将所得的反应液装入截留分子量为3500-7000Da的透析袋中用去离子水透析,不溶的部分离心除去,可溶部分冷冻干燥得产品。下表为溶菌酶与肉桂酸修饰酶对2种革兰氏阴性菌的最小抑菌浓度(mg/mL)。
本发明的有益效果:一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,拓宽了溶菌酶的抗菌谱,提高了对革兰氏阴性菌的抑制能力。
具体实施方式
实施例1
取40mg肉桂酸溶解于3mL5M的NaOH溶液中,用5M HCl调PH至7.5左右,然后加入去离子水至8mL;再向该溶液中加入160mg的EDAC(碳二亚胺),完全溶解后,于室温下静止1h;再加入40mg溶菌酶,混合物在30℃恒温水浴中搅拌反应24h,反应结束后,将所得的反应液装入截留分子量为3500-7000Da的透析袋中用去离子水透析,不溶的部分离心除去,可溶部分冷冻干燥得产品。

Claims (4)

1.一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,其特征是取40mg肉桂酸溶解于3mL5M的NaOH溶液中,用5M HCl调PH至7.5左右,然后加入去离子水至8mL;再向该溶液中加入160mg的EDAC(碳二亚胺),完全溶解后,于室温下静止1h;再加入40mg溶菌酶,混合物在30℃恒温水浴中搅拌反应24h,反应结束后,将所得的反应液装入截留分子量为3500-7000Da的透析袋中用去离子水透析,不溶的部分离心除去,可溶部分冷冻干燥得产品。
2.根据权利要求1所述的一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,其特征是修饰溶菌酶的物质为肉桂酸。
3.根据权利要求1所述的一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,其特征是肉桂酸与溶菌酶的质量比为1∶1。
4.根据权利要求1所述的一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法,其特征溶菌酶与碳二亚胺的质量比为1∶4。
CN201310573620.XA 2013-11-13 2013-11-13 一种通过肉桂酸修饰的溶菌酶提高溶菌酶抑制革兰氏阴性菌能力的方法 Pending CN103555705A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112159802A (zh) * 2020-09-18 2021-01-01 北京安佰特科技发展有限公司 一种利用肉桂醛偶联修饰的溶菌酶及其修饰方法
CN114424777A (zh) * 2020-09-22 2022-05-03 中国石油化工股份有限公司 一种改性溶菌酶制剂及其制备方法与应用
CN115074346A (zh) * 2022-05-25 2022-09-20 华中农业大学 一种修饰改性蛋清溶菌酶增强抗菌谱抗菌力的方法及其应用

Non-Patent Citations (6)

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ANDREAS等: "Synthesis and evaluation of lysozyme derivatives exhibiting an enhanced antimicrobial action", 《EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES》 *
CLAUDIA等: "Lysozyme-caffeic acid conjugates: possible novel preservatives for dermal formulations", 《INTERNATIONAL JOURNAL OF PHARMACEUTICS》 *
吴 洁等: "聚乙二醇对溶菌酶和粒细胞集落刺激因子的初步化学修饰", 《中国生化药物杂志》 *
庞莉: "阿魏酸化学修饰溶菌酶及扩展抑菌谱的研究", 《中国优秀硕士学位论文全文数据库》 *
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112159802A (zh) * 2020-09-18 2021-01-01 北京安佰特科技发展有限公司 一种利用肉桂醛偶联修饰的溶菌酶及其修饰方法
CN114424777A (zh) * 2020-09-22 2022-05-03 中国石油化工股份有限公司 一种改性溶菌酶制剂及其制备方法与应用
CN114424777B (zh) * 2020-09-22 2023-04-18 中国石油化工股份有限公司 一种改性溶菌酶制剂及其制备方法与应用
CN115074346A (zh) * 2022-05-25 2022-09-20 华中农业大学 一种修饰改性蛋清溶菌酶增强抗菌谱抗菌力的方法及其应用
CN115074346B (zh) * 2022-05-25 2024-02-13 华中农业大学 一种修饰改性蛋清溶菌酶增强抗菌谱抗菌力的方法及其应用

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Application publication date: 20140205