Title: Study on the Extraction Technology of Flavonoids from Pineapple Peel
Abstract: [Objective] The aim was to supply basis for exploitation of pineapple peel.[Method] With dried by baking and crushed pineapple peel as raw materials,ethanol as extractant,the flavonoids was extracted by ultrasonic assisted extraction.Then the impacts of material-liquid ratio,extractant concn.,extraction temperature and ultrasonic time on the extraction rate of flavonoids were studied through single factor experiments and the technological condition for extraction was optimized through orthogonal test.[Result] The results from single factor experiments indicated that the extraction rate of flavonoids was first increased and then decreased along with increase of material-liquid ratio,extractant concn.and extraction time;the optimum material-liquid ratio,extractant concn.,extraction temperature and ultrasonic time were 1∶20,70%,75 ℃ and 40 min resp.;the impacts of the 4 factors on the extraction rate of flavonoids were:extraction temperature extractant concn. material-liquid ratio ultrasonic time and the optimum extraction condition was setting material-liquid ratio at 1∶25,extractant concn.at 70%,extraction temperature at 70 ℃ and ultrasonic time at 40 min.Under this condition,the extraction rate of flavonoids reached 0.543%.[Conclusion] The optimum technology of extracting flavonoids from pineapple peel by ultrasonic assisted extraction was confirmed in this study.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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