浙江农业科学 ›› 2025, Vol. 66 ›› Issue (12): 3019-3025.DOI: 10.16178/j.issn.0528-9017.20240455

• 观赏园艺 • 上一篇    下一篇

基于UPLC的羊踯躅花瓣类胡萝卜素分析方法的建立

孟羽1(), 胡国伟2, 邹荣娴1, 滕新蕾1, 陶楚冰1, 肖政1,*(), 赵宏波1,*()   

  1. 1.浙江农林大学 风景园林与建筑学院/浙江省园林植物种质创新与利用重点实验室/南方园林植物种质创新与利用国家林业和草原局重点实验室,浙江 杭州 311300
    2.物产中大长乐林场有限公司,浙江 杭州 311100
  • 收稿日期:2024-06-03 出版日期:2025-12-11 发布日期:2025-12-17
  • 通讯作者: 赵宏波(1979—),男,浙江武义人,教授,博士,主要从事园林植物种质资源和遗传育种、植物景观及其生态效益、美丽乡村与村镇景观等方面研究,E-mail:zhaohb@zafu.edu.cn;肖政(1984—),男,福建三明人,副教授,博士,主要从事观赏植物分子生物学研究,E-mail:xzforestry@163.com
  • 作者简介:孟羽(1998—),女,山东滨州人,硕士研究生,研究方向为园林植物与观赏园艺,E-mail:3065332941@qq.com
  • 基金资助:
    浙江省农业新品种选育重大科技专项(2021C02071-2);浙江农林大学科研发展基金项目(2022LFR079)

Establishment of an analytical method for carotenoids in Rhododendron molle petals using UPLC

MENG Yu1(), HU Guowei2, ZOU Rongxian1, TENG Xinlei1, TAO Chubing1, XIAO Zheng1,*(), ZHAO Hongbo1,*()   

  1. 1. College of Landscape and Architecture, Zhejiang A&F University/Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants/Key Laboratory of National Forestry and Grassland Administration on Germplasm Innovation and Utilization for Southern Garden Plants, Hangzhou 311300, Zhejiang
    2. Wuchan Zhongda Changle Forest Farm Company, Hangzhou 311100, Zhejiang
  • Received:2024-06-03 Online:2025-12-11 Published:2025-12-17

摘要:

羊踯躅是杜鹃花属中重要的黄花观赏物种。本研究以羊踯躅为材料,旨在优化其类胡萝卜素的提取方法并建立超高效液相色谱(UPLC)分析体系,进而对羊踯躅花瓣中4种主要类胡萝卜素(叶黄素、玉米黄质、α-胡萝卜素和β-胡萝卜素)进行定性和定量分析。结果表明:以丙酮为提取剂,经过未皂化处理,在避光条件下超声辅助提取30 min,可获得良好提取效果;分析过程中采用ACQUITY UPLC BEH C18色谱柱,以乙腈-甲醇(体积比9∶1)为流动相等度洗脱,流速0.4 mL·min-1,检测波长465 nm,柱温27.5 ℃,进样量2 μL,可在6 min内实现类胡萝卜素的有效分离。进一步分析显示,β-胡萝卜素含量变化与花瓣颜色变化趋势一致,是决定羊踯躅花色的关键色素成分。本研究结果为进一步解析羊踯躅花色形成的分子调控机制奠定了重要的物质基础,也为杜鹃花花色育种提供了技术参考。

关键词: 超高效液相色谱, 羊踯躅(Rhododendron molle), 类胡萝卜素, β-胡萝卜素

Abstract:

Rhododendron molle is an important yellow-flowered ornamental species within the genus Rhododendron. In order to optimize the extraction method for its carotenoids and establish an ultra-performance liquid chromatography (UPLC) analysis system for the qualitative and quantitative analysis of 4 major carotenoids (lutein, zeaxanthin, α-carotene, and β-carotene) in the petals. The results showed that good extraction efficiency was achieved using acetone as the extractant, followed by unsaponification treatment and ultrasound-assisted extraction for 30 min under dark conditions. For the analysis, effective separation of carotenoids was accomplished within 6 min using an ACQUITY UPLC BEH C18 column with an isocratic elution of acetonitrile-methanol (volume ratio of 9∶1) as the mobile phase, a flow rate of 0.4 mL·min-1, a detection wavelength of 465 nm, a column temperature of 27.5 ℃, and an injection volume of 2 μL. Further analysis revealed that the change in β-carotene content was consistent with the variation in petal color, indicating that β-carotene might be the key pigment component determining the flower color of R. molle. The results of this study provide an important material basis for further elucidating the molecular regulatory mechanism of flower color formation in R. molle and also provide technical references for flower color breeding in Rhododendron.

Key words: ultra-performance liquid chromatography (UPLC), Rhododendron molle, carotenoid, β-carotene

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