Effects of chitosan and acetic acid composite coating on the quality and metabolomic characteristics of postharvest pineapple

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED Food Chemistry Pub Date : 2025-08-30 Epub Date: 2025-04-22 DOI:10.1016/j.foodchem.2025.144488

Yage Xing , Wuremo Luoguo , Wanmin Luo , Xiaomin Wang , Li Dan , Qinglian Xu , Xiaocui Liu , Hong Liu , Xingyu Lv

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Abstract

Pineapples suffer significant postharvest losses due to browning and quality decay. Chitosan-acetic acid coatings enhance shelf life, yet their metabolic mechanisms remain unclear. This study examined the impact of 1.5 % (m/V) chitosan-acetic acid composite coatings on pineapple storage quality and metabolite profiles under ambient (25 °C) and cold chain (4 °C) conditions via GC–MS analysis. At 25 °C on the 21st day of the study, treated pineapples retained 12.57 % total soluble solids (TSS), compared to 9.28 % in untreated fruits. On day 9, treated fruits at 25 °C showed a notably higher ascorbic acid concentration (73.15 mg/100 g) compared to other groups (p < 0.05), and the ascorbic acid concentration was always at the highest level in the early storage period (9 - 15d). KEGG pathway analysis indicated the coatings maintained postharvest quality by sustaining key indicators (TSS, TA, ascorbic acid), elucidating the mechanism by which chitosan-acetate coating preserves pineapple storage quality.

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壳聚糖乙酸复合包衣对菠萝采后品质及代谢组学特性的影响

菠萝在采后由于褐变和品质腐烂而遭受重大损失。壳聚糖-乙酸涂层可延长保质期，但其代谢机制尚不清楚。本研究通过气相色谱-质谱分析研究了1.5 % （m/V）壳聚糖-乙酸复合涂层在环境（25 °C）和冷链（4 °C）条件下对菠萝贮藏质量和代谢物谱的影响。在研究的第21天，在25 °C下，处理过的菠萝保留了12.57 %的总可溶性固结物（TSS），而未经处理的菠萝保留了9.28 %。第9天，25 °C处理的果实抗坏血酸浓度（73.15 mg/100 g）显著高于其他处理组（p <； 0.05），且在贮藏初期（9 ~ 15d）抗坏血酸浓度始终处于最高水平。KEGG途径分析表明，壳聚糖-醋酸酯包衣通过维持关键指标（TSS、TA、抗坏血酸）来保持菠萝采后品质，阐明了包衣保持菠萝贮藏品质的机理。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.