溪黄草常压回流提取物与减压回流提取物抗氧化性的比较

Compassion of Antioxidant Capacity of Extracts from Rabdosia Lophanthoides (Buch.Ham ex D.Don) Hara by Reflux Extraction and Decompression Reflux Extraction

摘要:

本文对比了常压回流提取法与减压提取法得到的溪黄草不同溶剂提取物总酚，黄酮，单宁提取率及抗氧化性强弱。实验结果表明：溪黄草提取物抗氧化性及总酚、黄酮、单宁提取率均受提取溶剂极性影响。在相同溶剂提取条件下，溪黄草提取物抗氧化性及总酚、黄酮、单宁提取率均受不同提取方法影响。常压回流提取物的抗氧化性高于减压回流提取物的抗氧化性。溪黄草中除总酚、黄酮、单宁外，还有其他物质会对抗氧化性有贡献。料液比的恒定及提取溶剂的选择是溪黄草有效成分提取的关键所在。高温不仅不会破坏溪黄草有效成分，还能增强有效成分的溶出。

Abstract:

The study compared the extraction rates of total phenols, flavonoids, tannins and antioxidant capacity of extracts from rabdosia lophanthoides (Buch.Ham ex D.Don) Hara by decompression reflux extraction and reflux extraction. The results showed that the extraction rates of total phenols, flavonoids, tannins and antioxidant capacities of extracts were influenced by solvent polarity. Using the same extraction agents, the extraction rates of total phenols, flavonoids, tannins and antioxidant capacity of extracts were influenced by different extraction methods. The antioxidant capacity of extracts by reflux extraction was higher than that by decompression reflux extraction. Several compounds including the total phenols, flavonoids, tannins, might contribute to antioxidant capacity of rabdosia lophanthoides (Buch.Ham ex D.Don) Hara. Constant material-solvent ratio and suitable extraction agents were the key factors influencing the extraction of active ingredients from Rabdosia lophanthoides(Buch.Ham ex D. Don)Hara. High temperature could improve the extraction efficiency of the effective compounds in Rabdosia lophanthoides(Buch.Ham ex D. Don)Hara.