相关实验视频

Updated: Jun 27, 2025

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

来自 Michelia champaca 树叶的类乙糖化物

Meihong Liu¹, Haibo Tan¹, Haihui Xie¹

¹Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; University of Chinese Academy of Sciences, Beijing, 100049, China.

|May 1, 2024

概括

米歇莉亚香帕卡的叶子产生了具有强大的抗氧化特性的新型甲基糖化物 (PhG). 这些化合物表现出优越的激素清除活性,与已建立的抗氧化剂如l-ascorbic acid相比.

科学领域:

植物化学植物化学
自然产品化学化学
药理学是指药理学,即药理学是指药理学.

背景情况:

香 (Magnoliaceae) 是一种具有潜在药用用途的植物物种.
甲基糖化物 (PhG) 是一类因其生物活性而闻名的天然化合物.
之前对M. champaca的植物化学研究可能没有完全探索其PhG含量.

研究的目的:

从 Michelia champaca 叶片中分离和鉴定新型甲基化物.
评估已知和孤立的PhG的抗氧化潜力.
为了确定M. champaca作为生物活性抗氧化化合物的来源.

主要方法:

植物化学研究涉及提取和隔离技术.
使用光谱方法 (例如,NMR,MS) 和化学分析阐明结构.
在体外抗氧化剂测试包括DPPH,FRAP,ABTS激素清除和细胞活性氧物种清除.

主要成果:

隔离了五种新的甲基糖化物 (PhG) 和十八种已知的PhG.
确认大多数已知的PhG在Michelia属中以前没有报告过.
许多PhG的显著DPPH,FRAP和ABTS激素清除活动,往往超过了l-ascorbic acid.
在12个PhG中观察到强大的细胞反应性氧物种清理活动,超过了黄素.

结论:

米歇莉亚香帕卡树叶是各种类甘酸盐的丰富来源.
已识别的PhG具有显著的抗氧化剂和激素清除能力.
这些发现凸显了M. champaca作为抗氧化化合物的天然来源的潜力.

关键词:

具有抗氧化活性的抗氧化剂.叶子叶子叶子马格诺利亚科 (Magnoliaceae) 是一个植物.米歇莉亚·香帕卡 (Michelia champaca) 是一个甲类糖化物是甲类的.

更多相关视频

Cellular Membrane Affinity Chromatography Columns to Identify Specialized Plant Metabolites Interacting with Immobilized Tropomyosin Kinase Receptor B

Cellular Membrane Affinity Chromatography Columns to Identify Specialized Plant Metabolites Interacting with Immobilized Tropomyosin Kinase Receptor B

Published on: January 19, 2022

Preparation of Gynura bicolor DC samples for High-Resolution Tandem Mass Spectrometry

Preparation of Gynura bicolor DC samples for High-Resolution Tandem Mass Spectrometry

Published on: February 2, 2024

相关概念视频

Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

Direct-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship

Cholinergic agonists or cholinomimetics mimic the action of acetylcholine to stimulate the parasympathetic nervous system. They are categorized into direct-acting and indirect-acting agents. The direct-acting cholinergic drugs induce the parasympathetic response by directly binding to the muscarinic or nicotine receptors. In comparison, the indirect-acting cholinergic drugs prevent acetylcholine hydrolysis, indirectly contributing to the extended parasympathetic response.
The direct-acting...

Direct-Acting Cholinergic Agonists: Therapeutic Uses

Direct-Acting Cholinergic Agonists: Therapeutic Uses

Direct-acting cholinergic agonists have many therapeutic uses in various medical fields. Choline esters, including acetylcholine, have limited clinical utility due to their non-selectivity and short duration of action. Still, acetylcholine and carbachol are applied topically during ophthalmologic surgery to induce miosis. Pilocarpine, a muscarinic and ganglionic stimulator, effectively treats open-angle glaucoma and alleviates xerostomia and dry mouth caused by radiotherapy or Sjögren...