期刊论文

Study on antioxidant and antibacterial activities of extracts from different polar Acalypha australis L.

中文

食品与机械

1003-5788

2019

35

6

172-176

10.13652/j.issn.1003-5788.2019.06.031

湖南省教育厅项目(编号:15C1037) 湖南省“十二五”重点学科中药学资助项目(编号:2014) 湖南省***卫生人才“225”工程项目(编号:2013) 2018年度湖南省中医药科研计划项目(编号:201864).

本校为第一机构

采用1,1-二苯基-2-三硝基苯肼(DPPH)法、β-胡萝卜素漂白法和清除一氧化氮自由基(NO)法来测定不同极性铁苋菜萃取物的抗氧化活性;通过微孔比浊法比较铁苋菜萃取物对3种革兰氏阴性细菌(大肠杆菌、铜绿假单胞菌和幽门螺杆菌)和4种革兰氏阳性细菌(表皮葡萄球菌、枯草芽孢杆菌、藤黄微球菌和金黄色葡萄球菌)的抑菌效果.结果表明,铁苋菜不同极性萃取物均有较好的清除DPPH、NO自由基和抑制β-胡萝卜素漂白的效果,浓度为2.0 mg/mL时,正丁醇萃取物清除DPPH自由基和抑制β-胡萝卜素漂白能力最佳,DPPH自由基清除率为94.60％,β-胡萝卜素抑制率为83.15％,乙酸乙酯萃取物清除NO自由基能力最强,清除率为82.72...

1,1-diphenyl-2-trinitrophenylhydrazine (DPPH) method,β-carotene bleaching method and nitric oxide (NO) method were used to determine the antioxidant activities of different extracts from Acalypha australis L.;All the extracts were evaluated for their bacteriostatic effect using microporous turbidimetry method, and three gram-negative bacteria: Escherichia coli , Pseudomonas aeruginosa , Helicobacter pylori and four gram-positive bacteria: Staphylococcus epidermidis , Bacillus subtilis , Micrococcus luteus , Staphylococcus aureus were determine...