摘要
棘胸蛙肌肉营养成分受季节变化影响显著,分析不同季节棘胸蛙肌肉营养成分的组成,旨在为后续产品深加工提供理论依据,在加工过程中可以依据产品需求选择合适季节的棘胸蛙。以春、夏、秋、冬四个季节的棘胸蛙(Quasipaa spinose)成蛙为试验对象,采用索氏提取法、凯氏定氮法和色谱法等分析其肌肉常规营养成分、氨基酸和脂肪酸组成的差异。结果表明:棘胸蛙肌肉常规营养成分随季节变化较大,粗蛋白(24.79±0.32 g/100 g)和粗脂肪(1.19±0.17 g/100 g)含量在冬季最高,水分和灰分含量在秋季最高;在不同季节,肌肉中氨基酸种类均含有17种,必需氨基酸均为赖氨酸含量最高8.73~10.20 g/100 g,蛋氨酸+胱氨酸含量最低。氨基酸总量、必需氨基酸总量和鲜味氨基酸总量均为秋季棘胸蛙肌肉中最高;缬氨酸和蛋氨酸+胱氨酸为限制性氨基酸,其中第一限制性氨基酸与第二限制性氨基酸在不同季节时存在差异;脂肪酸种类在秋季时最多,共有18种,其中秋季中油酸(C18:1n9c)含量最高,其余三季均为亚油酸(C18:2n6c)含量最高。棘胸蛙肌肉营养成分受到季节变化的影响显著。
The analysis of the nutritional composition of the muscle of Quasipaa spinosa in four seasons aimed to provide theoretical basis for the further processing of Quasipaa spinosa.In the processing process,Quasipaa spinosa in the appropriate season could be selected according to the product requirements.Samples of Quasipaa spinosa in four seasons were collected to analyze the differences of muscle basic nutrient composition,amino acids,fatty acids by Soxhlet extraction,Kjeldahl nitrogen determination and chromatography.The results showed that the nutrient composition varied greatly in different seasons.The contents of crude protein(24.79±0.32 g/100 g) and crude fat(1.19±0.17 g/100 g) were the highest in winter,and the contents of water and ash were the highest in autumn.However,17 kinds of amino acids were all contained in muscles in different seasons,and the contents of lysine(8.73~10.20 g/100 g) was the highest in essential amino acids,and methionine+cysteine was the lowest.The total amino acids(TAA),essential amino acids(EAA) and flavor amino acids(DAA) were the highest in autumn.Valine and methionine+cystine were limiting amino acids,but the first and the second limiting amino acids were different in different seasons.Fatty acids were the most in autumn(18 kinds),and oleic acid(C18:1n9c) content was the highest,while linoleic acid(C18:2n6c) content was the highest in the other three seasons.The muscle nutrient composition of Quasipaa spinosa was significantly affected by seasonal changes.
作者
刘芳彬
王伟
黄永春
杨汉民
LIU Fangbin;WANG Wei;HUANG Yongchun;YANG Hanmin(Fisheries College,Jimei University,Xiamen 361021,China;Shangchating Ecological Breeding Co.,Ltd.,Longyan 364000,China)
出处
《食品工业科技》
CAS
北大核心
2022年第9期365-371,共7页
Science and Technology of Food Industry
基金
山美水库生态环境保护试点项目-生态系统调控与修复工程。
关键词
棘胸蛙
肌肉
营养成分
氨基酸
脂肪酸
季节变化
Quasipaa spinosa
muscle
nutrient composition
amino acids
fatty acids
seasonal changes
