Spatial metabolic heterogeneity of sugar-acid balance and pigment accumulation in distinct color regions of <i>Yanzhihong</i> apricot (<i>Prunus armeniaca</i> L.) revealed by MALDI-IMS.

ABSTRACT: This study is the first to apply spatial metabolomics techniques, MALDI-IMS to investigate differential distributions of sugars, organic acids, and pigments in the red and yellow regions of Yanzhihong apricot fruit. PCA and OPLS-DA analyses indicated that sucrose was significantly higher in the red region (21.39 mg/g) than in the yellow region (17.79 mg/g). In contrast, the yellow region exhibited significantly greater levels of fructose (31.54 mg/100g), ascorbic acid (11.03 mg/g), malic acid (3.61 mg/g), and citric acid (6.41 mg/g) than the red region (16.88mg/100g, 8.29, 2.34, and 4.27 mg/g, respectively). The red region also exhibited higher carotenoid levels (29.25 mg/g) and the anthocyanin cyanidin-3-O-(6''-O-malonyl)glucoside, primarily in the peel and adjacent tissues, thereby enhan

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC12391084 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature