相关实验视频
Updated: Jul 18, 2026
06:50
Extraction and Analysis of Taiwanese Green Propolis
Published on: January 7, 2019
8.4K
来自Philodendron heleniae的乙醇提取物的挥发性组成概况,抗氧化特性和分子对接
Melanie Ochoa-Ocampo1, Nina Espinosa de Los Monteros-Silva2, Jefferson V Pastuña-Fasso1
1Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Km7 Via Muyuna, Tena 150101, Ecuador.
Molecules (Basel, Switzerland)
|March 27, 2025
概括
亚马逊植物菲洛登德龙 (Philodendron heleniae) 由于其丰富的植物化学成分,具有强烈的抗氧化活性. 这项研究强调了其作为制药应用的天然来源的潜力.
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.
- 民族植物学 民族植物学
背景情况:
- 药用植物是天然抗氧化剂的重要来源.
- 菲洛登德龙属,包括来自厄瓜多尔的P. heleniae,在各种疾病中具有传统用途.
- 了解P. heleniae的生物活性化合物可以揭示新的治疗应用.
研究的目的:
- 分析P. heleniae乙醇提取物的挥发性成分和抗氧化特性.
- 用植物化学和GC-MS分析识别关键的抗氧化化合物.
- 通过分子对接来评估已识别的化合物与酶的结合亲和力.
主要方法:
- 植物化学选以检测有色素,化合物,黄类,类.
- 在体外抗氧化剂测定 (ABTS和DPPH) 和与Trolox的比较.
- 气相色谱-质谱 (GC-MS) 用于代谢物识别.
- 分子对接模拟以评估酶-抑制剂相互作用.
主要成果:
- P. heleniae 提取物表现出显著的自由基清除能力,相当于 Trolox.
- GC-MS确定了48种挥发性化合物,其中基,基和脂质占主导地位.
- 分子对接揭示了化醇和化醇与化酶的强有力的结合.
- 分割有助于识别高度的抗氧化剂代谢产物.
结论:
- 黑是天然抗氧化剂的有希望的来源,具有潜在的药物价值.
- 已识别的化合物,特别是固醇,可能在减轻氧化应激方面发挥作用.
- 保护厄瓜多尔的生物多样性对于获得宝贵的生物活性资源至关重要.
关键词:
抗氧化剂是一种抗氧化剂.生物多样性生物多样性生物勘探 生物勘探气相色谱是一种气相色谱.质谱测量质谱测量质谱测量质谱测量质量测量质谱测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量质量测量分子对接的分子对接.植物提取物植物提取物更多相关视频
10:30A Generalized Method for Determining Free Soluble Phenolic Acid Composition and Antioxidant Capacity of Cereals and Legumes
Published on: June 10, 2022
6.7K
07:05Author Spotlight: Eco-Friendly Extraction of Bioactive Compounds Using Polyol-Based Microwave-Assisted Techniques
Published on: August 23, 2024
1.4K
相关概念视频
03:00Preparation of Epoxides
Overview
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
01:32Aldehydes and Ketones with HCN: Cyanohydrin Formation Overview
Cyanohydrins are compounds that contain –CN and –OH groups on the same carbon atom. They are formed by the nucleophilic addition of the cyanide ions to the carbonyl group. Cyanide ions are highly basic and nucleophilic and can be generated from HCN under aqueous conditions. However, since HCN is a weak acid, the number of cyanide ions generated is very small. Hence, a small amount of base or KCN/NaCN is added to HCN to increase the concentration of the cyanide ions in the reaction mixture.
01:17Oxidation of Phenols to Quinones
In the presence of oxidizing agents, phenols are oxidized to quinones. Quinones can be easily reduced back to phenols using mild reducing agents. The electron-donating hydroxyl group enhances the reactivity of the aromatic ring, enabling oxidation of the ring even in the absence of an α hydrogen.
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
o-hydroxy phenols are oxidized to o-quinones and p-hydroxy phenols to p-quinones. Such redox reactions involve the transfer of two electrons and two protons. The reversible redox property is crucial in...
01:10Aldehydes and Ketones with HCN: Cyanohydrin Formation Mechanism
Cyanohydrins are formed when cyanide nucleophiles and carbonyl compounds like aldehydes and ketones react. A strong base, the cyanide ion, catalyzes cyanohydrin formation. The ions are generated from HCN under aqueous conditions. Once the cyanide ions are generated, the first step involves the nucleophilic attack of the cyanide ions on the electrophilic carbonyl carbon. This attack shifts the π electrons from the C=O to the oxygen atom forming the alkoxide ion intermediate. The alkoxide anion...
00:56Extraction: Advanced Methods
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
01:19Phase I Oxidative Reactions: Overview
Phase I biotransformation, or functionalization, is a crucial chemical process that converts drugs and other xenobiotics into more water-soluble forms, facilitating expulsion from the body. It involves oxidative, reductive, and hydrolytic reactions that add or unveil polar functional groups on lipophilic substrates. Key players in phase I reactions are the mixed-function oxidases. Situated in liver cell microsomes, these enzymes predominantly carry out drug metabolism. They require molecular...