期刊
FOOD CHEMISTRY
卷 393, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.133452
关键词
Strawberry; NMR; Glycinebetaine; Cold-storage; Metabolomics
资金
- Ministry of Education, Singapore [R-143-000-B48-114]
- China Scholarship Council for the CSC scholarship
The exogenous application of glycinebetaine (GB) at an appropriate concentration effectively stabilizes the quality-related metabolites of cold-stored strawberries, including sugars and amino acids, while reducing the acid content. Moreover, the GB content in strawberries also increases. These findings suggest that GB is a natural and safe treatment that can maintain the quality of cold-stored strawberries and potentially provide methyl-donor supplementation in our daily diet.
Glycinebetaine (GB) has long been used as a preservative for refrigerated fruits, but the effect of GB on the global metabolites of cold-stored strawberries is still unclear. In this study, the effects of exogenous application of GB on quality-related metabolites of cold-stored strawberries were investigated by nuclear magnetic resonance (NMR)based metabolomic analysis. The results showed that the application of GB (especially at the concentration of 10 mM) on cold-stored strawberries effectively stabilized the sugars (D-xylose and D-glucose) and amino acids (tyrosine, leucine, and tryptophan) content, and lowered the acid (acetic acid) content as well. Additionally, the GB content in strawberries also increased. This implies that the appropriate concentration of GB is a natural and safe treatment, which could maintain the quality of cold-stored strawberries by regulating levels of quality related metabolites, and the ingestion of GB-preserved strawberries may serve as a source of methyl-donor supplementation in our daily diet.
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