在UPLC-QTOF/MS和分子对接的基础上,识别来自Polygonatum的生物活性氨酸
Yunyun Zheng1, Bingge Liu1, Xiaojiang Wang2
1Zhejiang University Zhongyuan Institute, Zhengzhou, 450001, China.
Talanta
|July 9, 2025
概括
波利格纳 (Polygonatum) 类的沙素,特别是来自PK物种的沙素,具有很高的生物活性. 西比里科赛德B和金吉阿诺赛德H是对2型糖尿病和抗氧化剂有希望的天然抑制剂.
科学领域:
- 植物化学 植物化学
- 药理学 药理学是指药理学的学科.
- 自然产品 化学 化学
背景情况:
- 沙素是Polygonatum物种中重要的生物活性化合物.
- 为了确定有价值的自然资源,研究不同Polygonatum物种中沙素含量和生物活性的变化至关重要.
研究的目的:
- 为了识别具有优越生物特性的Polygonatum肥素.
- 选肥素化合物高生物活性,包括抗氧化和酶抑制作用.
- 评估已识别的素作为治疗剂和功能性食品成分的潜力.
主要方法:
- 从四种Polygonatum物种中提取和净化香素.
- 在体外生物活性测定,包括α-氨酶和α-葡萄糖酶抑制.
- 超高性能液体染色学-四极飞行时间质谱 (UPLC-QTOF/MS) 用于化合物识别.
- 分子对接模拟以评估与目标酶的结合亲和力.
主要成果:
- 沙宁含量和生物活性在物种之间差异很大,PK显示出最高的产量和疗效.
- 基因基因氨酸具有强大的α-氨基酶 (IC50 = 0.877 mg/mL) 和α-葡萄糖酶 (IC50 = 0.747 mg/mL) 抑制活性.
- 在PK中发现了Sibiricoside B,Kingianoside C和Kingianoside H,它们在体外显示出强烈的抗氧化活性.
- 分子对接揭示了Sibiricoside B和Kingianoside H与acarbose相比具有更高的结合能.
结论:
- 来自Polygonatum PK的Sibiricoside B和Kingianoside H是2型糖尿病管理的有希望的自然候选者.
- 这些氨酸具有显著的抗氧化特性,支持它们在功能性食品中的使用.
- 这项研究证实了Polygonatum物种作为新型天然抗氧化剂和功能成分的来源的潜力.
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