乙醇和热水提取物的抗氧化和抗微生物活性来自Quercus acuta
Jin-Sung Huh1,2, Hyunmo Choi3, Sik-Won Choi1
1Forest Biomaterials Research Center, National Institute of Forest Science, Jinju 52849, Republic of Korea.
Antioxidants (Basel, Switzerland)
|February 27, 2026
概括
奎尔库斯 (Quercus acuta) 玉核中含有丰富的生物活性,如酸. 这些化合物具有显著的抗氧化和抗微生物特性,特别是对抗Pseudomonas aeruginosa.
科学领域:
- 植物化学 植物化学
- 自然产品 化学 化学
- 微生物学 微生物学
背景情况:
- 树 (Quercus物种) 含有色素,但其详细的化学成分和生物活性尚未完全理解.
- 化合物以其抗氧化和抗菌作用而闻名,但它们在树中的特定作用需要进一步调查.
研究的目的:
- 描述来自Quercus acuta的化合物的抗氧化和抗菌活性.
- 识别和量化Q. acuta的不同部分的关键化合物,并将它们的存在与生物活性相关联.
主要方法:
- 使用乙醇和热水从Q. acuta的叶子,树枝,骨和核中提取化合物.
- 使用DPPH (2,2-二-1-皮克里利水) 和ABTS+ (2,2'-阿齐诺-比斯 (((3-乙烯扎提亚-6-硫酸) 盐) 试验对抗氧化能力的评估.
- 对大肠杆菌, Pseudomonas aeruginosa 和金黄色葡萄球菌的抗菌活性的评估.
- 使用高性能液体染色学与并联质谱法 (HPLC-MS/MS) 识别和定量化合物.
主要成果:
- 来自Q. acuta核的乙醇提取物表现出最高的抗氧化活性 (76% DPPH,59% ABTS+在25μg/mL时清理) 和针对P. aeruginosa的选择性抗菌抑制.
- 与热水提取物相比,乙醇提取物富含多,黄和日. 核含有最高的黄类和 tannin 含量,而叶子含有丰富的catechin.
- 在HPLC-MS/MS分析中,确定了12种化合物,其中酸在核乙醇提取物中最为丰富. 在酸含量和抗氧化剂和抗微生物活性之间发现了强烈的正相关性.
结论:
- 奎尔库斯 (Quercus acuta) 核是生物活性的宝贵来源,包括酸,甲基素和素.
- 已识别的化合物具有显著的抗氧化和选择性抗微生物特性,表明在食品防腐或制药领域的潜在应用.
- 酸是Q. acuta提取物中观察到的抗氧化和抗菌作用的关键贡献者.
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