Comprehensive lipidomics analysis reveals the changes in lipid profile of camellia oil affected by insect damage

Abstract

Information on changes in lipid composition of seed oils under biotic stresses is scare. The camellia weevil, Curculio chinensis (Coleoptera: Curculionidae) as a notorious seed predator of Camellia species, has caused huge economic losses in China. Lipidomics is used in this study to reveal the lipid composition of camellia oil and its changes after insect damage. 278 lipids including glycerolipids (GL) (221), glycerophospholipids (GP) (34), fatty acyls (FA) (13), sphingolipids (SP) (8), prenol lipids (PR) (1) and sterol lipids (ST) (1) were determined in camellia oils. Insect damage had a significant impact on lipids, particularly FA and GL. Ten significantly different lipids [FFA(18:2), FFA(24:6), TG(14:1/18:2/18:2), TG(16:0/23:0/18:2), TG(20:1/24:1/18:2), TG(18:2/24:0/18:2), TG(16:3/18:2/22:5), PI(16:1/18:1), PE(16:0/18:1), PE(18:1/18:2)] were identified as potential biomarkers for distinguishing oil extracted from non-infested oilseeds and oil from infested oilseeds. We also detected four most important metabolic pathways by bioinformatics analysis to explore the mechanisms underlying changes. Our findings may be useful for future camellia oil production and may provide new insight into improving of nutritional quality of camellia oil.

Evaluation of Lipid Quality in Fruit: Utilizing Lipidomic Approaches for Assessing the Impact of Biotic Stress on Pecans (Carya illinoinensis)

“…This method may also be used to study the lipid changes that occur in pecans during storage [1,10]. However, there has been minimal success in characterizing the lipid composition in edible vegetable oil utilizing lipidomic analysis [15,16].…”

“…Insect infestations can have a major impact on the quality and productivity of pecan crops, resulting in financial losses for growers [17]. Because of the possible consequences for nutritional quality, flavor, shelf life, and overall pest resistance, the influence of insect stress on the lipid metabolism and composition of oilseeds has received increased attention [16]. It has been shown that biotic pressures such as insect pests affect the fatty acid composition and several other quality components of oilseeds.…”

“…Lipidomics offers useful tools for studying the complex lipid changes caused by insect stress in oilseeds. Data on changes in the lipid composition (based on lipidomics) of oilseeds in response to biotic stresses, on the other hand, are scarce [16]. To fill this knowledge gap, we identified the lipid species in non-infested and infested pecans in the current study.…”

Analysis of the lipidomic profile of vegetable oils and animal fats and changes during aging by UPLC-Q-exactive orbitrap mass spectrometry

“…10 The advantages of lipidomics in the analysis of degraded vegetable oils and animal fats are: (1) lipidomics is not the analysis of individual lipids, but the simultaneous study of whole lipids, analyzing vegetable oils and animal fats from a systematic perspective; [11][12][13] (2) lipidomics has led us to identify new signaling molecules, discover potential biomarkers for differences in vegetable oils and animal fats, and provide effective assistance for the distinction and traceability of vegetable oils and animal fats. [14][15][16] The innovation points of this study include: (1) compared with previous studies, this paper analyzes more types and quantities of samples and dynamically monitors the changes in the lipid composition and content of 13 different types of vegetable oils and animal fats during aging on ve different carriers; (2) solves the problem of difficult identication of aged vegetable oils and animal fats in forensic science. This paper simulates the changes in the lipid composition and content of vegetable oils and animal fats during aging on ve different carriers under extremely hot conditions.…”

“…10 The advantages of lipidomics in the analysis of degraded vegetable oils and animal fats are: (1) lipidomics is not the analysis of individual lipids, but the simultaneous study of whole lipids, analyzing vegetable oils and animal fats from a systematic perspective; 11–13 (2) lipidomics has led us to identify new signaling molecules, discover potential biomarkers for differences in vegetable oils and animal fats, and provide effective assistance for the distinction and traceability of vegetable oils and animal fats. 14–16…”