中国农业科学 ›› 2026, Vol. 59 ›› Issue (21): 4924-4936.doi: 10.3864/j.issn.0578-1752.2026.21.015

• 园艺 • 上一篇    下一篇

云南干/湿热区香水柠檬果实不同组织生物活性成分分析

朱银潇1,2(), 张碧蓉1, 闫素云1, 史文斌1, 刘伟杰1,2, 段敏仙1, 程运江2(), 周先艳1()   

  1. 1 云南省农业科学院热带亚热带经济作物研究所/云南省柑橘重点实验室, 云南保山 678000
    2 华中农业大学园艺林学学院, 武汉 430000
  • 收稿日期:2026-04-29 接受日期:2026-08-19 出版日期:2026-11-01 发布日期:2026-11-06
  • 通信作者:
    周先艳,E-mail:。
    程运江,E-mail:
  • 联系方式: 朱银潇,E-mail:2771392115@qq.com。
  • 基金资助:
    云南省科技厅基础研究计划重点项目(202501AS070030); 云南柑橘优良种质资源保护与发掘利用(202502AE090008); 云南省柑橘研究国际联合研发中心(202503AP140047)

Bioactive Components in Different Tissues of Xiangshui Lemon Fruits in Dry and Humid Tropical Areas of Yunnan

ZHU YinXiao1,2(), ZHANG BiRong1, YAN SuYun1, SHI WenBin1, LIU WeiJie1,2, DUAN MinXian1, CHENG YunJiang2(), ZHOU XianYan1()   

  1. 1 Institute of Tropical and Subtropical Cash Crops, Yunnan Academy of Agricultural Sciences/Yunnan Key Laboratory of Citrus, Baoshan 678000, Yunnan
    2 College of Horticulture & Forestry Sciences, Huazhong Agricultural University, Wuhan 430000
  • Received:2026-04-29 Accepted:2026-08-19 Published:2026-11-01 Online:2026-11-06

摘要:

【目的】系统探究云南干/湿热区香水柠檬不同组织生物活性成分差异特征,明确干湿热区香水柠檬(Citrus medica)不同组织(黄皮层、白皮层、果肉、中心柱及囊衣)的活性成分分布规律,为香水柠檬生物活性成分进一步开发利用提供理论参考。【方法】分别选取云南巍山干热区和瑞丽湿热区的香水柠檬果实为试材,采用超高效液相色谱-四极杆-飞行时间高分辨质谱(UPLC-Q-TOF)技术对样品进行检测分析,通过单因素方差分析(ANOVA)、主成分分析(PCA)和正交偏最小二乘法判别分析(OPLS-DA)进行综合评价,筛选能够区分产区和组织的特征性生物活性成分。【结果】两个产区香水柠檬果实中共鉴定出31种生物活性成分,包括12种酚酸、18种类黄酮和1种柠檬苦素。巍山干热区香水柠檬中生物活性成分的含量大于瑞丽湿热区香水柠檬。果实不同组织中酚酸类物质含量为黄皮层>白皮层>果肉>中心柱及囊衣;而类黄酮含量为黄皮层>果肉>中心柱及囊衣>白皮层;柠檬苦素含量为中心柱及囊衣>果肉>白皮层>黄皮层。多元统计分析结果显示,PCA模型可有效区分两个产区的样品,进一步采用OPLS-DA分析两个产区不同组织代谢数据,以VIP≥2筛选两个产区不同组织的特征差异代谢物,在黄皮层、白皮层、果肉和中心柱及囊衣中分别筛选出4种、3种、2种和2种差异代谢物。两产区以VIP≥2筛选出巍山干热区4个组织的特征差异物质是圣草次甙和芹菜素-C-五碳糖苷-C-阿拉伯糖苷异构体,这2个物质分别在中心柱及囊衣和黄皮层中积累;瑞丽湿热区4个组织特征差异代谢物为圣草次甙。【结论】巍山干热区因独特的干热河谷气候条件,果实中生物活性成分总含量显著高于瑞丽湿热区,香草酸仅存在于巍山干热区果实中。果实不同组织中活性成分分布具有特异性,黄皮层是酚酸和类黄酮的主要富集部位,中心柱及囊衣是柠檬苦素的主要富集部位。

关键词: 香水柠檬, 果实组织, 干/湿热区, 代谢组, 类黄酮, 酚酸, 柠檬苦素

Abstract:

【Objective】 To systematically investigate the differences in bioactive components in different tissues of Xiangshui lemon (Citrus medica) from dry and humid tropical areas in Yunnan, this study clarified the distribution patterns of bioactive ingredients across various tissues (flavedo, albedo, pulp, central axis, and segment membrane) of Xiangshui lemon from dry and humid tropical areas, so as to provide the theoretical references for the further development and utilization of bioactive components of Xiangshui lemon. 【Method】 In this study, Xiangshui lemon fruits were collected from the dry‑hot region of Weishan and the humid region of Ruili in Yunnan Province as experimental materials. Ultra‑performance liquid chromatography coupled with quadrupole time‑of‑ flight high‑resolution mass spectrometry (UPLC‑Q‑TOF‑HRMS) was adopted for sample detection. One‑way analysis of variance (ANOVA), principal component analysis (PCA) and orthogonal partial least‑squares discriminant analysis (OPLS‑DA) were used for comprehensive evaluation, so as to screen characteristic bioactive components that could distinguish different producing areas and tissues. 【Result】 A total of 31 bioactive components were identified in Xiangshui lemon fruits from the two regions, including 12 phenolic acids, 18 flavonoids, and 1 limonoid. The contents of all bioactive components in Xiangshui lemon from Weishan dry-hot region were higher than those from Ruili humid-hot region. In different fruit tissues, the content order of phenolic acids was: flavedo > albedo > pulp > central axis and segment membrane; the content order of flavonoids was: flavedo > pulp > central axis and segment membrane > albedo; the content order of limonin was: central axis and segment membrane > pulp > albedo > flavedo. Multivariate statistical analysis showed that the PCA model could effectively distinguish samples from the two producing regions. OPLS-DA was further performed on metabolic data of different tissues from the two regions. With VIP ≥ 2 as the screening threshold, 4, 3, 2 and 2 differential metabolites were identified in flavedo, albedo, pulp, central axis and segment membrane, respectively. Based on the threshold of VIP ≥ 2, eriocitrin and apigenin-C-pentoside-C-arabinoside isomer were screened as the characteristic differential substances of four tissues in Weishan dry-hot region, which were predominantly accumulated in central axis & segment membrane and flavedo, respectively, while eriocitrin was identified as the key differential metabolite across all four tissues in Ruili humid-hot region. 【Conclusion】 Benefiting from the unique climatic conditions of dry-hot river valley, the total content of bioactive components in Xiangshui lemon fruits from Weishan dry-hot region was significantly higher than that in Ruili humid-hot region, and vanillic acid was exclusively detected in Weishan dry-hot region. The distribution of bioactive components presented obvious tissue specificity: flavedo was the primary enrichment tissue for phenolic acids and flavonoids, while central axis and segment membrane were the main accumulation tissue of limonin.

Key words: Xiangshui lemon, fruit tissues, dry and humid tropical areas, metabolomics, flavonoids, phenolic acids, limonin