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Optimization of extraction of vitamin E from deodorizer distillate of oil-tea camellia seed oil by response surface methodology
  
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KeyWord:deodorizer distillate of oil-tea camellia seed oil  vitamin E  response surface methodology  extraction process
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WU Xuehui, LAN Wutao, RONG Ou  
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Abstract:
      In order to rationally exploit and utilize the by-products from refined oil-tea camellia seed oil, the deodorizer distillate after methyl esterification was used as raw material to extract vitamin E(VE). The effects of extraction solvent, ratio of material to liquid, extraction temperature, extraction time and stirring rate on the extraction rate of VE were studied. The optimal conditions were obtained by the central composite design and response surface methodology as follows: with anhydrous ethanol as extract, ratio of material to liquid 1∶?4, extraction time 43 min, extraction temperature 60?℃ and stirring rate 126 r/min. Under these conditions , the extraction rate of VE was 93.9%.
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