Effects of toxic cyanobacteria and ammonia on flesh quality of blunt snout bream (Megalobrama amblycephala).
Effects of toxic cyanobacteria and ammonia on flesh quality of blunt snout bream (Megalobrama amblycephala).
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DOI：
10.1002/jsfa.7850
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发表时间：
2017-03
影响因子：
4.1
通讯作者：
Li Wang;Chuanyue Chen;Wanjing Liu;H. Xia;J. Li;Xuezhen Zhang
中科院分区：
文献类型：
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作者：
Li Wang;Chuanyue Chen;Wanjing Liu;H. Xia;J. Li;Xuezhen Zhang
背景技术 有毒蓝藻水华导致含有蓝藻毒素（例如微囊藻毒素）的有机生物质的产生以及水环境中氨浓度的升高。摄入有毒蓝藻和接触氨对鱼类来说是严重危害。本研究评估了膳食有毒蓝藻和氨暴露对钝口鳊鱼（团头鲂）肉质的影响。结果 饲料中有毒蓝藻和氨暴露对鱼的生长性能、鱼片的近似成分和滴水损失没有影响，但显着降低了鱼片的总氨基酸、总必需氨基酸、硬度和粘性，并增加了鱼片的最终pH值和丙二醛含量。然而，膳食有毒蓝藻和氨暴露对这些参数没有显着的相互作用。此外，膳食中的有毒蓝藻会显着增加鱼片的初始 pH 值、解冻损失和蛋白质羰基含量，而氨暴露则不会。结论 本研究结果表明，膳食中有毒蓝藻和氨暴露会降低钝吻鲷鱼片的质量。 © 2016 中国化学工业学会。
BACKGROUND Toxic cyanobacterial blooms result in the production of an organic biomass containing cyanotoxins (e.g. microcystins) and an elevated ammonia concentration in the water environment. The ingestion of toxic cyanobacteria and exposure to ammonia are grave hazards for fish. The present study assessed the effects of dietary toxic cyanobacteria and ammonia exposure on the flesh quality of blunt snout bream (Megalobrama amblycephala). RESULTS Dietary toxic cyanobacteria and ammonia exposure had no impact on fish growth performance, fillet proximate composition and drip loss, whereas it significantly decreased fillet total amino acids, total essential amino acids, hardness and gumminess, and increased fillet ultimate pH as well as malondialdehyde content. However, there was no significant interaction between dietary toxic cyanobacteria and ammonia exposure on these parameters. Additionally, dietary toxic cyanobacteria significantly increased fillet initial pH, thaw loss and protein carbonyl content, whereas ammonia exposure did not. CONCLUSION The results of the present study indicate that dietary toxic cyanobacteria and ammonia exposure reduced the quality of blunt snout bream fillet. © 2016 Society of Chemical Industry.