Different origin of betelnut alkali betel nutUsing spectrophotometry in different habitats (hainan， guangdong， yunnan WZS xuwen in fujian， estuary with varieties of shaoxing-jiaxing Ann) of alkali content of betelnut betel Experiments show that different alkali content of betelnut betel nut there is some difference with linear regression equation， A 160 = 10-3C - 0617 measured in four different alkali content of betelnut betel nut is as follows: the 426% wuzhishan hainan， guangdong， yunnan， estuary 377% xuwen 314%， fujian szabics 344% AKey words: betelnut; Betelnut alkali content， Different origin， Spectrophotometric method
