The Effect of SO2 Fumigation, Acid Dipping, and SO2 Combined with Acid Dipping on Metabolite Profile of 'Heiye' Litchi (Litchi chinensis Sonn.) Pericarp

文献类型： 外文期刊

第一作者： Yin, Feilong

作者： Yin, Feilong;Liu, Yunfen;Wu, Zhenxian;Shuai, Liang;Luo, Tao;Lai, Tingting;Long, Libing;Wu, Zhenxian;Luo, Tao;Li, Zhuoran;Han, Dongmei;Shuai, Liang

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关键词： litchi (Litchi chinensis Sonn.); sulfur fumigation (SF); widely targeted metabolomics; sulfur-containing metabolites; substrates for browning

期刊名称：HORTICULTURAE （ 影响因子：3.0； 五年影响因子：3.2 ）

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年卷期： 2025 年 11 卷 8 期

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收录情况： SCI

摘要： Sulfur fumigation (SF), acid dipping (HCl treatment, HAT), and their combination (SF+HAT) are common methods for long-term preservation and color protection of litchi. However, their effects on the metabolic profile of the litchi pericarp have not been investigated. SF resulted in a yellowish-green pericarp by up-regulating lightness (L*), b*, C*, and h degrees but down-regulating total anthocyanin content (TAC) and a*, while HAT resulted in a reddish coloration by up-regulating a*, b*, and C* but down-regulating L*, h degrees, and TAC. SF+HAT recovered reddish color with similar L*, C* to SF but a*, b*, h degrees, and TAC between SF and HAT. Differential accumulated metabolites (DAMs) detected in HAT (vs. control) were more than those in SF (vs. control), but similar to those in SF+HAT (vs. control). SF specifically down-regulated the content of cyanidin-3-O-rutinoside, sinapinaldehyde, salicylic acid, and tyrosol, but up-regulated 6 flavonoids (luteolin, kaempferol-3-O-(6 ''-malonyl)galactoside, hesperetin-7-O-glucoside, etc.). Five pathways (biosynthesis of phenylpropanoids, flavonoid biosynthesis, biosynthesis of secondary metabolites, glutathione metabolism, and cysteine and methionine metabolism) were commonly enriched among the three treatments, which significantly up-regulated sulfur-containing metabolites (mainly glutathione, methionine, and homocystine) and down-regulated substrates for browning (mainly procyanidin B2, C1, and coniferyl alcohol). These results provide metabolic evidence for the effect of three treatments on coloration and storability of litchi.

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