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农学学报 ›› 2025, Vol. 15 ›› Issue (6): 1-9.doi: 10.11923/j.issn.2095-4050.cjas2025-0019

• 农艺农学 生理生化 •    下一篇

南瓜多糖高通量提取测定体系优化及应用

宋慧1(), 安学君1, 黄芸萍1, 张香琴1, 吕燕1, 钱欣欣2   

  1. 1 宁波市农业科学研究院/宁波市特色园艺作物品质调控和抗性育种重点实验室,浙江宁波 315040
    2 浙江万里学院生物与环境学院,浙江宁波 315100
  • 收稿日期:2025-02-08 修回日期:2025-04-10 出版日期:2025-06-20 发布日期:2025-06-18
  • 作者简介:

    宋慧,女,1979年出生,甘肃兰州人,副研究员,博士,研究方向:瓜菜分子与生物技术育种。通信地址:315040 浙江省宁波市鄞州区德厚街19号宁波市农业科学研究院,Tel:0574-89184055,E-mail:

  • 基金资助:
    宁波市公益类科技计划项目“高多糖加工型南瓜分子辅助选育与示范”(2023S087)

Optimization and Application of Efficient Detection System for Extraction of Polysaccharides in Pumpkin

SONG Hui1(), AN Xuejun1, HUANG Yunping1, ZHANG Xiangqin1, LV Yan1, QIAN Xinxin2   

  1. 1 Ningbo Academy of Agricultural Sciences / Ningbo Key Laboratory of Characteristic Horticultural Crops in Quality Adjustment and Resistance Breeding, Ningbo, Zhejiang 315040
    2 Zhejiang Wanli University, College of Biology and Environment, Ningbo, Zhejiang 315100
  • Received:2025-02-08 Revised:2025-04-10 Online:2025-06-20 Published:2025-06-18

摘要:

为简化南瓜多糖育种过程中多糖含量测定方法,开展了优化高通量热水浸提南瓜多糖苯酚-硫酸法测定体系的试验。以23S18等南瓜果肉为试材,以单因素试验确定检测波长和浓硫酸用量,并明确测定结果与纯化后测定多糖结果的相关性。结果表明,苯酚-硫酸法测定南瓜多糖波长为490 nm,反应体系中样品用量:5%苯酚:浓硫酸为2:2:7。建立高通量测定多糖回归方程y=0.0061x+0.1476(R²=0.9965),吸光值在0.084~3.684线性关系良好。微量提取高通量测定方法与纯化后测定多糖的结果显著相关。分析测定53份南瓜多糖含量,筛选到含量>100 mg/g的高多糖亲本(23S2和23S14)和组合(23FV5和23FV26)用以育种。南瓜多糖高通量提取测定体系操作简单、线性范围广,测定结果与纯化测定多糖结果显著相关,对提高南瓜多糖育种效率行之有效。

关键词: 南瓜, 多糖, 单因素试验, 苯酚-硫酸法, 育种

Abstract:

To simplify the determination methods of pumpkin polysaccharide content in breeding process, the optimized experiments of phenol sulfuric acid method after hot water extraction of pumpkin polysaccharide were carried out. The detection wavelength and H2SO4 amount were determined by single factor experiment using 23S18 and other pumpkin flesh. The correlation of determination results between unpurified and purified polysaccharide content was clarified. The results showed that the wavelength of pumpkin polysaccharide determined by phenol-sulfuric acid method was 490nm, and the sample in reaction system included: 5% phenol: H2SO4 was 2:2:7. The regression equation was established as y=0.0061x+0.1476 (R2=0.9965) and the linear relationship was good when the absorbance was in the range of 0.084-3.684. There was a significant correlation between the unpurified and purified polysaccharide content. The polysaccharide contents of 53 pumpkin parents and combinations were determined and analyzed. Two parents (23S2 and 23S14) and two combinations (23FV26 and 23FV5) with high polysaccharide content of more than 100mg/g were selected for breeding. The efficient detection system for polysaccharides was simple to operate, wide in linear range, and the determination results are significantly related to the results of purified polysaccharide, which would improve the efficiency of pumpkin polysaccharide breeding.

Key words: pumpkin, polysaccharides, single factor experiment, phenol-sulfuric acid method, breeding