食品科学 ›› 2018, Vol. 39 ›› Issue (16): 221-226.doi: 10.7506/spkx1002-6630-201816032

• 成分分析 • 上一篇    下一篇

桂花多酚类化合物电喷雾萃取电离质谱分析

薛阿辉1,崔?萌1,邹华杰1,罗丽萍1,2,*   

  1. (1.南昌大学生命科学学院,江西?南昌 330031;2.南昌大学 食品科学与技术国家重点实验室,江西?南昌 330047)
  • 出版日期:2018-08-25 发布日期:2018-08-17
  • 基金资助:
    国家自然科学基金面上项目(31071551);江西省重点研发计划项目(S2017ZPYFE0361); 江西省科技创新人才项目(S2016RCCXB0047)

Analysis of Polyphenolic Compounds in Osmanthus fragrans Flowers by Extractive Electrospray Ionization-Mass Spectrometry

XUE Ahui1, CUI Meng1, ZOU Huajie1, LUO Liping1,2,*   

  1. (1. College of Life Science, Nanchang University, Nanchang 330031, China; 2. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China)
  • Online:2018-08-25 Published:2018-08-17

摘要: 为建立桂花中多酚类化合物的电喷雾萃取电离质谱(extractive electrospray ionization-mass spectrometry,EESI-MS)分析法,以四季桂花为材料,采用高效液相色谱(high performance liquid chromatography,HPLC)法和EESI-MS测定了其醇提液中主要的多酚类化合物组成。结果表明:四季桂花中总酚和总黄酮含量分别为(133.38±0.12)mg/g和(72.49±0.09)mg/g。采用HPLC法从其醇提液中检测到了15?种多酚类化合物,其中杨梅素、桑黄素、芦丁、柚皮素和(+)-儿茶素含量较为丰富。EESI-MS在负离子模式下从四季桂花醇提液中检测出了原儿茶酸、p-香豆酸、咖啡酸、表儿茶素和绿原酸5?种化合物;正离子模式下检测出了肉桂酸、桑黄素和杨梅素等3?种化合物。EESI-MS具有样品用量少、不需复杂分离预处理、分析速度快等优点,可用于食品中多酚类化合物的分析。

关键词: 电喷雾萃取电离质谱, 总酚, 总黄酮, 多酚, 桂花

Abstract: This study aimed to establish a method for the determination of polyphenols in Osmanthus fragrans flowers by extractive electrospray ionization-mass spectrometry (EESI-MS). The main polyphenolic compounds in the methanol extract of O. fragrans var. semperflorens flowers were determined by high performance liquid chromatography (HPLC) and EESI-MS. The results showed that the contents of total phenols and total flavonoids in the methanol extract were (133.38 ± 0.12) and (72.49 ± 0.09) mg/g, respectively. Fifteen polyphenolic compounds were detected by HPLC, with myricetin, morin, rutin, naringenin and (+)-catechin being abundant. p-Protocatechuic acid, coumaric acid, caffeic acid, and epicatechin were detected by EESI-MS in the negative ion mode while cinnamic acid, morin and myricetin were detected in the positive ion mode. The EESI-MS method in this study had the advantages of low sample consumption, no complex pretreatment and short analysis time and could be used for the analysis of polyphenols in food samples.

Key words: extractive electrospray ionization-mass spectrometry, total phenols, total flavonoids, polyphenol, Osmanthus fragrans

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