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Sensory analysis combined with targeted metabolomics reveal quality changes in solid and liquid endosperm of postharvest tender coconut

文献类型： 外文期刊

作者： Shen, Xiaojun 1 ; Li, Jing 1 ; Sun, Xiwei 1 ; Li, Jia 1 ; Li, Dongxia 1 ; Yang, Yaodong 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Hainan Key Lab Trop Oil Crops Biol, Coconut Res Inst, Wenchang 571339, Peoples R China

2.Coconut Int Joint Res Ctr, Wenchang 571339, Peoples R China

关键词： Coconut water; Coconut flesh/meat; Sugars; Organic acids; Amino acids; Fatty acids

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.8； 五年影响因子：7.5 ）

ISSN： 0925-5214

年卷期： 2025 年 222 卷

页码：

收录情况： SCI

摘要： Tender coconuts (TC) primarily consumed for their liquid endosperm (LE), but its quality deteriorates during postharvest storage. Solid endosperm (SE), the only cellular tissue in direct contact with LE, is believed to influence LE quality during storage, although its specific role remains unclear. To explore this, sensory analysis of LE, morphological examination of SE, and targeted metabolomics of sugars, organic acids, amino acids, fatty acids and their derivatives in both LE and SE of postharvest TC were conducted. The analysis identified sugars as the most abundant compounds, with significant decreases in glucose and D-fructose, correlating with reduced sweetness and aftertaste-sweetness in LE. L-malic acid, the predominant organic acid in both LE and SE, remained stable throughout storage. Four sugars (glucose, D-fructose, D-galactose, inositol), two organic acids (cis-aconitic acid and indolelactic acid), and four amino acids (glycine, L-threonine, glycyl-L-proline, ethanolamine) were identified as common biomarkers in both LE and SE samples during TC storage. Several compounds, including glucose, D-fructose, L-cysteine, significantly declined in both LE and SE over time, showing similar changing patterns. SE thickened and became denser during storage, potentially consuming these compounds and altering their levels in LE, thereby affecting LE quality. These findings reveal changing patterns of key metabolites in LE and SE of postharvest TC. This study provides a fundamental understanding of the mechanisms behind LE and SE quality changes during TC storage.

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