文献类型：期刊文献

中文题名：采后干燥对油茶籽油脂质轮廓的影响

英文题名：Effect of Post-harvest Drying on Lipid Profile of Camellia Seed Oil

作者：孙诗曼[1] 崔茂凯[1] 李庆杨[1] 周凌原[1] 汤富彬[1] 刘毅华[1]

第一作者：孙诗曼

机构：[1]中国林业科学研究院亚热带林业研究所,杭州311400

年份：2025

卷号：40

期号：8

起止页码：106-112

中文期刊名：中国粮油学报

外文期刊名：Journal of the Chinese Cereals and Oils Association

收录：;北大核心:【北大核心2023】；

基金：浙江省“领雁”研发攻关计划项目(2023C02045)。

语种：中文

中文关键词：油茶籽油;干燥;脂质组学;脂质轮廓;品质

外文关键词：camellia seed oil;drying;lipidomics;lipid profile;quality

分类号：S794.4;TS210

摘要：本研究运用脂质组学技术,对油茶籽油3种不同干燥方式(冷冻干燥、热风干燥与自然干燥)下脂质轮廓进行分析,并借助正交偏最小二乘判别分析(OPLS-DA)揭示了干燥温度对脂质组成差异的影响。结果表明:油茶籽油中共鉴定出5大类、23个脂质亚类、167种脂质成分。干燥对链长和不饱和度具有显著影响,尤其是中短链(碳链长度介于8~40之间)的变异系数达到了156.54%。鉴定出35种温度敏感脂质(TSPs),变异倍数为0.04~91.54。其中冷冻干燥下,甘油二酯(DG)、二酰甘油葡萄糖醛酸(DGGA)和磷脂酰乙醇胺(PE)等脂质的含量显著增加1.08~12.86倍,脂质单体中MGDG(18∶2_18∶3、18∶1_18∶2、18∶1_18∶1)上调倍数分别为71.04、12.03和11.62。热风干燥则显著提升了磷脂酸(PA)、溶血磷脂酰乙醇胺(LPE)和溶血磷脂酸(LPA)脂质的含量3.27~7.50倍,脂质单体中PEtOH(18∶1_18∶1、16∶0_18∶1)和Cer(18∶0;2O/16∶0)上调倍数分别为91.54、76.22和52.18。本研究还确认了干燥主要影响与脂质变化密切相关的5条关键脂质代谢途径。
Lipidomic techniques were usde to conduct an analysis of the lipid profiles of camellia seed oil under three distinct drying methods:freeze-drying(FD),hot-air drying(HD),and natural drying(ND).Orthogonal partial least squares discriminant analysis(OPLS-DA)was employed to reveal the influence of drying temperature on lipid composition differences.A total of 167 lipids belonging to 23 subclasses across 5 lipid categories were identified in camellia seed oil.Drying significantly influenced chain length and degree of unsaturation,with the coefficient of variation for medium and short-chain lipids(carbon chain length between 8 and 40)reaching 156.54%.The study identified 35 temperature sensitive lipids(TSPs)with fold changes ranging from 0.04 to 91.54.Under freeze-drying conditions,the content of lipids such as DG,DGGA,and PE were significantly increased by 1.08 to 12.86 times.Notably,individual lipid species MGDG(18∶2_18∶3,18∶1_18∶2,18∶1_18∶1)were upregulated by 71.04,12.03,and 11.62 times,respectively.Hot-air drying significantly enhanced the content of PA,LPE,and LPA lipids by 3.27 to 7.50 times.Individual lipid species PEtOH(18∶1_18∶1,16∶0_18∶1),and Cer(18∶0;2O/16∶0)exhibited remarkable upregulation by 91.54,76.22,and 52.18 times,respectively.Furthermore,five key lipid metabolic pathways closely associated with lipid changes were identified during the drying process.