食品科学 ›› 2021, Vol. 42 ›› Issue (10): 249-254.doi: 10.7506/spkx1002-6630-20200508-080

• 成分分析 • 上一篇    下一篇

不同百合样品中13 种内源性游离糖的含量分析

孔滢,王欢,郎利新,窦晓莹,白锦荣   

  1. (1.北京市辐射中心,北京 100875;2.北京市科学技术研究院,北京 100089;3.北京师范大学核科学与技术学院,射线束技术教育部重点实验室,北京 100875)
  • 出版日期:2021-05-25 发布日期:2021-06-02
  • 基金资助:
    北京市财政项目(PXM2019_178217_000001);北京市科学技术研究院改革与发展经费培育类项目(PY2020JK42)

Analysis of the Contents of 13 Intrinsic Free Sugars in Different Lily Samples

KONG Ying, WANG Huan, LANG Lixin, DOU Xiaoying, BAI Jinrong   

  1. (1. Beijing Radiation Center, Beijing 100875, China; 2. Beijing Academy of Science and Technology, Beijing 100089, China;3. Key Laboratory of Beam Technology, Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China)
  • Online:2021-05-25 Published:2021-06-02

摘要: 采用气相色谱-质谱联用技术对15 份不同产地的百合样品中13 种内源性游离态的单糖和二糖进行含量分析。结果显示,所有百合样品中含量最高的3 种游离糖为蔗糖、葡萄糖和果糖;其中蔗糖含量在大部分样品中占到游离糖总含量的86%以上。与同一产地的卷丹鳞茎相比,卷丹珠芽中的多种游离糖含量更高。与新鲜鳞茎相比,百合干中的游离糖总含量明显降低、游离糖种类增多。在食用药用百合中,兰州百合鳞茎和山丹鳞茎的甜度值最高,卷丹鳞茎、龙牙百合鳞茎和兰州百合干的甜度值为中等水平,龙牙百合干的甜度值最低。聚类分析结果显示同一种百合的鳞茎样品多聚类为一组;主成分分析结果显示山丹、兰州百合和岷江百合的鳞茎在多种游离糖的含量上较为突出。紫色的岷江百合鳞茎和卷丹珠芽中的葡萄糖和果糖含量较高,可能与花青苷的积累有关。本研究为百合产品进一步开发提供参考。

关键词: 百合;内源性游离糖;气相色谱-质谱联用;聚类分析;主成分分析

Abstract: In this study, the contents of intrinsic free monosaccharides and disaccharides in 15 lily samples collected from different producing regions of China were analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that the major free sugars in all lily samples were sucrose, glucose and fructose. In most lily samples, sucrose accounted for more than 86% of total free sugar contents. Compared with the bulbs from the same regions, the bulbils of Lilium lancifolium were richer in many free sugars. Compared with the fresh bulbs, dried lily scales contained decreased contents of total free sugars and increased types of free sugars. Among these edible and medicinal lilies, the bulbs of L. pumilum and L. davidii var. willmottiae had the highest sweetness, followed by the bulbs of L. lancifolium and L. brownii var. viridulum and the dried scales of L. davidii var. willmottiae, and the sweetness of the dried scales of L. brownii var. viridulum was the lowest. Hierarchical cluster analysis showed that most bulb samples belonging to the same Lilium species were clustered together, and principal component analysis showed that L. pumilum, L. davidii var. willmottiae and L. regale were richer in most types of free sugars. Besides, the purple bulbs of L. regale and the bulbils of L. lancifolium had higher contents of glucose and fructose, which may be related to the accumulation of anthocyanins. This study provides a theoretical basis for product development from lily germplasms.

Key words: lily; intrinsic free sugars; gas chromatography-mass spectrometry; cluster analysis; principal component analysis

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