食品科学2025，Vol.46Issue(8)：198-210,13.DOI:10.7506/spkx1002-6630-20241106-043
基于非靶向代谢组学分析狮头柑生长过程主要滋味物质变化
Untargeted Metabolomic Analysis of Changes in Key Taste Substances during the Growth Process of Shitougan(Citrus reticulata Blanco cv.Manau Gan)
摘要
Abstract
In order to investigate the pattern of changes in taste-related metabolites during the growth process of Shitougan fruit and to reveal the chemical basis of its taste,the taste-related metabolites in two edible parts,juice sac and segment membrane,at different growth stages were determined by using untargeted metabolomics combined with quantitative analysis in comparison with the results of electronic tongue detection.The results showed that the contents of three major sweet components,sucrose,glucose and fructose,in the two edible parts generally showed an increasing trend during fruit growth and development.The contents of citric acid,tartaric acid,quinic acid and aconitic acid showed a decreasing trend,whereas the content of malic acid first increased and then decreased,and the content of fumaric acid increased only slightly.The contents of bitter components such as flavanones,limonin,and normilin showed a decreasing trend.The expression of differential metabolites in both edible parts concentrated in the biosynthesis of secondary metabolites and amino acid biosynthesis and metabolism pathways,with more substances being accumulated in the segment membrane,and the differential metabolites were dominated by the ABC transporter pathway.The contents of sucrose,fructose and citric,malic and tartaric acids in both edible parts of ripe fruit were(11.78±0.79)and(10.58±0.88)mg/g,(8.06±0.59)and(10.32±0.61)mg/g,(4.73±0.04)and(4.21±0.08)mg/g,(3.20±0.02)and(3.24±0.07)mg/g,(0.34±0.12)and(0.07±0.04)mg/g,respectively,which were higher than their respective lowest taste threshold concentrations.The contents of the bitter substances naringin,neohesperidin,limonin,and normilin were(0.60±0.02),(3.45±0.06),(0.29±0.01)and(0.002±0.00)mg/g in the segment membrane,respectively,which were higher than the taste thresholds,but not in the segment membrane.Sweet(serine,proline and alanine),bitter(arginine),and umami(aspartic acid and glutamic acid)amino acids all had taste intensity values greater than 1 in both juice sac and segment membrane,and these substances synergized with each other to form the distinctive taste traits of Shitougan fruit.The results of this study reveal the composition of the substances contributing to the taste of Shitougan fruits in a preliminary and comparative systematic way,and provide theoretical references for the basic research on the molecular mechanism and metabolism of the formation of important taste-contributing substances.关键词
狮头柑/滋味/非靶向代谢组学/变化规律/生长时期Key words
Shitougan/taste/untargeted metabolomics/changing patterns/growth period分类
轻工业引用本文复制引用
赵小娜,田祥涛,梁清青,王燕君,朱姝昱,鲁周民..基于非靶向代谢组学分析狮头柑生长过程主要滋味物质变化[J].食品科学,2025,46(8):198-210,13.基金项目
财政部"以大学为依托的农业科技推广模式建设"项目(TGZX2022-18) （TGZX2022-18）
