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Quality change of crude Jatropha oil during storage
  
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KeyWord:crude Jatropha oil  acid value  peroxide value  storage temperature  moisture content  package form
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Author NameAffiliation
GUO Pingmei  
HUANG Fenghong  
LI Xiulan，etc  
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Abstract:
      The crude Jatropha oils with different moisture contents of 0.1%, 0.5% and 1.0% respectively sealed in brown plastic bottle, white plastic bottle and transparent glass bottle were stored at 20,30℃ and 40℃ for 160 d, and the acid values and peroxide values of the crude Jatropha oils were measured every twenty day to study the quality change of crude Jatropha oil under different storage conditions. The results showed that the acid value and peroxide value of crude Jatropha oil increased with the increasing of storage temperature and moisture content and the extension of storage time. The optimal storage conditions of crude Jatropha oil were obtained by orthogonal experiment as follows: brown plastic bottle sealed packaging, moisture content 0.1%, storage temperature 15℃. Under the optimal conditions, after storing for 180 d,the acid value of crude Jatropha oil did not change significantly, while peroxide value increased.
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