期刊论文

Study on the stability of scavenging DPPH free radical by Viola philippica apigenin

中文

食品安全质量检测学报

2095-0381

2018

9

11

2775-2779

10.3969/j.issn.2095-0381.2018.11.038

湖南省教育厅资助项目（15C0890）~~；

本校为第一机构

目的 研究不同外界因素对紫花地丁芹菜素抗氧化稳定性的影响.方法 紫花地丁芹菜素标准品经乙醇溶解,采用清除DPPH自由基法测定其抗氧化活性,研究不同pH、温度、光照条件、一些常见金属离子及防腐剂对样品抗氧化性的影响.结果 紫花地丁芹菜素具有较强的耐热性;在酸性环境中抗氧化活性保持较好,在碱性环境中抗氧化活性很快丧失;金属离子(Na+、K+、Ca2+、Mg2+)对紫花地丁芹菜素的稳定性影响不明显,而光照、山梨酸钾则会降低其活性.结论 外界环境因素对紫花地丁芹菜素抗氧化能力存在不同程度的影响,建立合适的储存条件可以显著增强紫花地丁芹菜素的抗氧化能力.

Objective To study the effect of different external factors on the antioxidant stability of the Viola philippica apigenin. Methods The standards of the Viola philippica apigenin were dissolved by ethyl alcohol, the antioxidant activity was determined by using scavenging DPPH free radical method, and the effects of different pH, temperature, illumination conditions, some common metal ions and preservatives on antioxidant properties of samples were studied. Results The thermostability of the Viola philippica apigenin was strong, the antioxidant a...