食品科学 ›› 2011, Vol. 32 ›› Issue (13): 75-77.doi: 10.7506/spkx1002-6630-201113018

• 基础研究 • 上一篇    下一篇

小叶丁香不同提取部位抗氧化活性

徐蕊1,张崇禧2,蔡恩博1,田阳1,朱启光1,李蕾1,郑友兰1,*   

  1. 1.吉林农业大学中药材学院 2.山东大学威海分校海洋学院
  • 出版日期:2011-07-15 发布日期:2011-07-02

Antioxidant Activities of Different Solvent Extracts from Syringa pubescens Turcz Bark

XU Rui1,ZHANG Chong-xi2,CAI En-bo1,TIAN Yang1,ZHU Qi-guang1,LI Lei1,ZHENG You-lan1,*   

  1. 1. College of Chinese Medicinal Material, Jilin Agricultural University, Changchun 130118, China; 2. Marine College, Shandong University at Weihai, Weihai 264209, China
  • Online:2011-07-15 Published:2011-07-02

摘要: 目的:研究小叶丁香皮中不同溶剂提取物的抗氧化活性。方法:采用ABTS+ ·、DPPH自由基及还原性反应体系,利用分光光度法测定小叶丁香皮的总提液、乙酸乙酯层、正丁醇层和石油醚层在不同质量浓度下的抗氧化能力及总酚含量。结果:小叶丁香皮的不同溶剂提取物对DPPH自由基均具有较强的清除能力及还原能力,其清除率与质量浓度呈良好的量效关系。其中正丁醇层抗氧化能力最强,在质量浓度0.62mg/mL时,对ABTS+ ·的最大清除率为96.28%,对DPPH自由基的最大清除率为96.16%,与同质量浓度VC的清除率接近,且其IC50分别为0.074、0.012mg/mL;测得的正丁醇层总酚含量最高,为120.1μg/20mg。结论:小叶丁香具有较好的抗氧化能力,其正丁醇层抗氧化能力显著,这与总酚含量有较大的相关性。

关键词: 小叶丁香, 抗氧化, 总酚, 相关性

Abstract: Objective: To explore the antioxidant activities of different solvent extracts from Syringa pubescens Turcz bark. Methods: ABTS+ · and DPPH free radical scavenging and ferric reducing assay were used for antioxidant activity evaluation. The content of total phenols in 75% ethanol extract and its different solvent fractions (ethyl acetate, n- butanol and petroleum ether) were determined spectrometrically. Results: All the investigated samples had strong ability to scavenge DPPH free radicals and reduce ferric ions in a dose-dependent fashion. Among them, the strongest antioxidant activity was observed in n- butanol fraction. The maximum scavenging rate of n-butanol fraction against ABTS+ · was 96.28% at the concentration of 0.62 mg/mL. However, its maximum scavenging rate of against DPPH radicals was 96.16%, which was close to that of vitamin C. The IC50 of the fraction against ABTS+ · and DPPH radicals were 0.074 mg/mL and 0.012 mg/mL, respectively. In addition, it had the strongest antioxidant activity, which might be largely associated with its high level of total phenols, 120.1μg/20 mg. Conclusion: Syringa pubescens Turcz bark has good antioxidant capacity, in which components soluble in both 75% ethanol and n-butanol reveal the strongest antioxidant capacity.

Key words: Syringa pubescens Turcz, antioxidant, total phenols, correlation

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