Abstract:

Response surface methodology(RSM) was employed and second order quadratic equation for the temperature、methanol concentration、ratio of material to liquid of extracting polyphenol of arecanut was built and the applicability of the model equation was verified. The result of the response surface showed that with the increasing of temperature and methanol concentration ,the extraction efficiency of arecanut polyphenol increased at first but decreased later,with the increasing of temperature and ratio of material to liquid the extraction efficiency of arecanut polyphenol increased gradually, while with the increasing of methanol concentration and ratio of material to liquid the extraction efficiency of arecanut polyphenol increased at first but decreased later as well but the interraction of both was not significant. The main factor which effects the extraction efficiency of arecanut polyphenol is temperature then is the ratio of material to liquid and methanol concentration. The optimum process parameters for extracting the polyphenol of arecanut were obtained as: temperature 65.7℃, methanol concentration 62%, ratio of material to liquid 1:23.5g/mL. At this time the extraction efficiency of arecanut polyphenol was 11.23mg/g