The effect of nitrite and nitrate treatment on growth performance, nutritional composition and flavor-associated metabolites of grass carp (Ctenopharyngodon idella)
文献类型： 外文期刊
作者： Zhang, Jun -Ming 1 ; Fu, Bing 1 ; Li, Yi-chao 1 ; Sun, Jin-Hui 2 ; Xie, Jun 1 ; Wang, Guang-Jun 1 ; Tian, Jing-Jing 1 ; Kaneko, Gen 1 ; Yu, Er-Meng 1 ;
作者机构： 1.Pearl River Fisheries Res Inst CAFS, Key Lab Trop & Subtrop Fishery Resource Applicat &, Guangzhou 510380, Peoples R China
2.Tianjin Agr Univ, Tianjin Key Lab Aqua-Ecol & Aquaculture, Tianjin 300384, Peoples R China
3.Univ Houston Victoria, Coll Nat & Appl Sci, Victoria, TX 77901 USA
4.South China Agr Univ, Coll Marine Sci, Guangzhou 510640, Peoples R China
关键词： Nitrite; Flavor; Grass carp; Metabolomics
期刊名称：AQUACULTURE （ 影响因子：5.135； 五年影响因子：5.125 ）
ISSN： 0044-8486
年卷期： 2023 年 562 卷
页码：
收录情况： SCI
摘要： Water quality is closely related to the nutritional and sensory qualities of grass carp, which has the largest aquaculture production among freshwater fishes. The purpose of this study was to explore the effects of nitrite and nitrate on the growth performance, nutrition composition and muscle flavor-associated metabolites of grass carp through an exposure experiment with varying concentrations (nitrite 0.1-1 mg/L, nitrate 2-8 mg/L). Nitrite at 0.5-1 mg/L and nitrate at 2-8 mg/L significantly reduced the growth performance [e.g.,-20 points reduction in weight gain (%), P < 0.05]. Nitrite and nitrate treatments significantly decreased crude protein, crude fat, carbohydrate content and amino acid content in muscle at most concentrations tested with significant concomitant increases in the water content. Grass carp treated with 1 mg/L nitrite had the highest concentrations of geosmin (GSM) and 2-MIB (-4-6 mu g/kg compared to the-0.5-1 mu g/kg in the control group, P < 0.05). The metabolomic analysis showed that both nitrite and nitrate affected flavor-associated metabolites, and nitrite treatment produced more differential metabolites than nitrate treatment. Nitrite treatment mainly affected amino acid metabolism and protein digestion and absorption pathways; specifically, the synthesis of arginine and the metabolic pathways of glutamic acid and proline were significantly down-regulated. This study provides reference information for improving the quality of aquatic products from the source of aquaculture.
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