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首页> 外文期刊>Fish & Shellfish Immunology >Effects of hot-water extract of banana (Musa acuminata) fruit's peel on the antibacterial activity, and anti-hypothermal stress, immune responses and disease resistance of the giant freshwater prawn, Macrobrachium rosenbegii
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Effects of hot-water extract of banana (Musa acuminata) fruit's peel on the antibacterial activity, and anti-hypothermal stress, immune responses and disease resistance of the giant freshwater prawn, Macrobrachium rosenbegii

机译：香蕉（Musa acuminata）果皮的热水提取物对巨型淡水虾罗氏沼虾的抗菌活性以及抗低温敏感性，免疫反应和抗病性的影响

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摘要

The hot-extracts isolated from fruit's peel of banana, Musa acuminata, was evaluated on the antibacterial activity to pathogens from aquatic animals, and immunostimulating potential, disease resistance and anti-hypothermal stress in giant freshwater prawn, Macrobrachium rosenbergii through injection administration. The banana peel extract (BPE) showed good activity against 1 Gram-positive and 3 Gram-negative pathogens, including Lactococcus garvieae, Photobacteria damsella, Vibrio alginolyticus and Vibrio parahemolyticus especially in prawn pathogen of L. garvieae strain, which were carried out by a disk diffusion method. Prawn received BPE via injection administration at 1-6 mu g (g prawn)(-1) significantly increased total haemocyte count (THC), hyaline cell (HC), granular cell (GC), phenoloxidase (PO) activity and phagocytic activity against L. garvieae from 3 to 6 days, and significantly increased clearance efficiency against L. garvieae and a significantly decreased coagulation time of prawn from 1 to 6 days. Prawn injected with BPE at 6.0 mu g (g prawn)(-1) for 6 days showed significantly increased superoxide dismutase (SOD) activity, but significantly decreased respiratory bursts (RBs) of per haemocyte. Survival rates of M. rosenbergii injected with BPE at concentrations of 1, 3 and 6 mu g (g prawn)(-1) were significantly higher than those injected with saline control after challenge with L. garvieae for 4-6 days, and the respective relative survival percentages of prawn were 28.6%, 38.1%, and 47.8%, respectively at 6 days. The sublethal time of prawns that had received saline and BPE at 1, 3 and 6 mu g (g prawn)(-1) for 6 days and then were transferred from 28 degrees C to 14 degrees C were 69.4, 79.8, 83.6, and 90.2 h, respectively. It was concluded that the BPE can be used as the bacteriostat, and immunostimulant and physiological regulator for prawn through injection administration to enhance immunity, physiological responses, and resistance against L. garvieae
机译：通过注射给药，从香蕉果皮中分离出的热提取物被评估了对水生动物病原体的抗菌活性以及对巨型淡水虾罗氏沼虾的免疫刺激潜力，抗病性和抗低温的压力。香蕉皮提取物（BPE）对1株革兰氏阳性和3株革兰氏阴性病原体表现出良好的活性，其中包括加尔乳杆菌，光合杆菌，弱溶弧菌和副溶血弧菌，尤其是在由L. garvieae菌株对虾病原体中盘扩散法。大虾通过1-6μg（g对虾）（-1）注射给药接受BPE，可显着增加总血红细胞计数（THC），透明细胞（HC），颗粒细胞（GC），酚氧化酶（PO）活性和吞噬活性从3到6天，L。garvieae和对L. garvieae的清除效率显着提高，对虾的凝结时间从1到6天显着减少。对虾注射6.0μg（g对虾）（-1）的BPE持续6天，显示超氧化物歧化酶（SOD）活性显着增加，但每个血细胞的呼吸爆发（RBs）显着降低。用加维乳杆菌攻击4-6天后，分别以1、3和6微克（g对虾）（-1）的浓度注射BPE的罗氏沼虾的存活率显着高于注射生理盐水的小鼠。对虾在第6天的相对存活百分比分别为28.6％，38.1％和47.8％。在1、3和6μg（g对虾）（-1）下接受盐水和BPE处理6天然后从28摄氏度转移到14摄氏度的虾的亚致死时间分别为69.4、79.8、83.6和分别为90.2小时。结论是，BPE可以通过注射给药用作对虾的抑菌剂，免疫刺激剂和生理调节剂，从而增强虾的免疫力，生理反应和对加维乳杆菌的抵抗力。

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