1-Deoxynojirimycin from Bacillus subtilis improves antioxidant and antibacterial activities of juvenile Yoshitomi tilapia

文献类型： 外文期刊

第一作者： Tang, Lining

作者： Tang, Lining;Huang, Kai;Sun, Lei;Huang, Qing;Bi, Yanjun;Xie, Jun;Yu, Dan

作者机构：

关键词： Aeromonas hydrophila;Antibacterial;Aquaculture;Fish;GRAS;Probiotic;Relative percent survival;Spleen index;Superoxide dismutase;Survival

期刊名称：ELECTRONIC JOURNAL OF BIOTECHNOLOGY （ 影响因子：2.8； 五年影响因子：3.379 ）

ISSN： 0717-3458

年卷期： 2017 年 30 卷

页码：

收录情况： SCI

摘要： Background: Juvenile Yoshitomi tilapia is often infected by pathogens and results in low-level survival rate. Bacillus subtilis, as a probiotic, may have beneficial effects on Y. tilapia with compound 1-deoxynojirimycin (DNJ), which has antibacterial activities. The effects of dietary probiotic supplementation on Y. tilapias were evaluated. Results: Juvenile Y. tilapia was fed with B. subtilis for 56 d. Y. tilapia was infected by Aeromonas hydrophila and survival rate was compared. Dietary B. subtilis increased weight gain rate, specific growth, food conversion ratios and food intake rate of Y. tilapia. The diet improved the cumulative survival rate (CSR) of juvenile Y. tilapia when the concentration of B. subtilis was more than 2.05 x 10(10) cfu/kg and CSR reached a maximum rate when the concentration of bacillus was 4.23 x 10(10) (P < 0.05). Meanwhile, B. subtilis improved total antioxidant capacity (TAC), spleen index, the activities of serum lysozyme, alkaline phosphatase (ALP), superoxide dismutase (SOD) and catalase (CAT) (P < 0.05). In contrast, B. subtilis reduced serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), malondialdehyde (MDA) and C3 complement (P < 0.05). DNJ was isolated from secondary metabolisms and proved to increase the levels of SOD, CAT and reduce the levels of AST, ALT and MDA at cell levels. After A. hydrophila infection, DNJ prevented the reduction in survival rate of Y. tilapia (P < 0.05). Conclusions: 1-Deoxynojirimycin from Bacillus subtilis can be used to improve the growth performance of juvenile Y. tilapia by affecting its antioxidant and antibacterial activities. (C) 2017 Pontificia Universidad Catolica de Valparaiso. Production and hosting by Elsevier B.V. All rights reserved.

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