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从水果中获得的蛋白酶的酶活性及部分特性,并与蛋白酶进行比较。

Enzyme activity and partial characterization of proteases obtained from fruit and compared with proteases.

作者信息

Meza-Espinoza Libier, de Los Ángeles Vivar-Vera María, de Lourdes García-Magaña María, Sáyago-Ayerdi Sonia G, Chacón-López Alejandra, Becerrea-Verdín Eduardo M, Montalvo-González Efigenia

机构信息

1Laboratorio Integral de Investigación en Alimentos, Instituto Tecnológico de Tepic, Av Tecnológico No. 2595, Lagos del Country, C.P. 63175 Tepic, Nayarit Mexico.

2Instituto Tecnológico de Tuxtepec, Av. Dr. Víctor Bravo Ahuja S/N, Col. 5 de Mayo, C.P. 68350 Tuxtepec, Oaxaca Mexico.

出版信息

Food Sci Biotechnol. 2017 Dec 12;27(2):509-517. doi: 10.1007/s10068-017-0244-6. eCollection 2018 Apr.

Abstract

The enzymatic activity and partial characterization of proteases from fruits were evaluated and compared with proteases. The specific activity increased twofold after partial purification in both proteases. Partially purified proteases from showed good specific activity at pH 6.0-8.0 and residual activity of 70-100% for 60 min at 37-60 °C, similar to proteases. The value of proteases from was higher (253.32 µM) than that of proteases (234.94 µM). The use of specific protease inhibitors indicated the presence of cysteine and serine proteases. Proteases with molecular weight of 66.2-97 and 21-31 kDa were detected. proteases registered 73% hydrolysis using a soy protein concentrate, similar to the enzyme activity of proteases and commercial bromelain. These results demonstrate that proteases could be a potential alternative protease in the food industry.

摘要

对水果蛋白酶的酶活性和部分特性进行了评估,并与蛋白酶进行了比较。两种蛋白酶在部分纯化后比活性均提高了两倍。来自[水果名称]的部分纯化蛋白酶在pH 6.0 - 8.0时表现出良好的比活性,在37 - 60°C下60分钟内残留活性为70 - 100%,与[比较对象]蛋白酶相似。来自[水果名称]的蛋白酶的Km值(253.32µM)高于[比较对象]蛋白酶(234.94µM)。使用特异性蛋白酶抑制剂表明存在半胱氨酸和丝氨酸蛋白酶。检测到分子量为66.2 - 97 kDa和21 - 31 kDa的蛋白酶。[水果名称]蛋白酶使用大豆浓缩蛋白时的水解率为73%,与[比较对象]蛋白酶和商业菠萝蛋白酶的酶活性相似。这些结果表明,[水果名称]蛋白酶可能是食品工业中一种潜在的替代蛋白酶。

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本文引用的文献

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Functional characterization of purified pear protease and its proteolytic activities with casein and myofibrillar proteins.
Food Sci Biotechnol. 2016 Mar 31;25(Suppl 1):31-39. doi: 10.1007/s10068-016-0095-6. eCollection 2016.
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Partial Characterization of the Proteolytic Properties of an Enzymatic Extract From "Aguama" Bromelia pinguin L. Fruit Grown in Mexico.
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