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Saturday April 5,2025,
Optimization of deodorization process for retention ofphytosterols in rice bran oil
  
DOI：
KeyWord:rice bran oil  phytosterol  deodorization  nitrogen distillation  acid value  refining yield
FundProject:国家自然科学基金面上项目（31972110）；“十三五”国家重点研发计划子课题（2018YFD041102)
Author NameAffiliation
JING Lulu1, WEI Jiali2, BAI Ge1，etc  
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Abstract:
      The bleached rice bran oil was deodorized by nitrogen distillation,and the effects of deodorization temperature, dedorization time and flow rate of nitrogen on the phytosterol content of rice bran oil were studied. The results showed that ensuring high quality rice bran oil，the deodorization process conditions for maximum retention of phytosterol in deodorized oil were optimized as follows: deodorization temperature 260 ℃, deodorization time 120 min and flow rate of nitrogen 0.12 m3/h.Under the optimal conditions, the retention rate of phytosterol was 83.38% (based on bleached oil) , refining yield was 93.01%, and the acid value of deodorized rice bran oil was 0.25 mgKOH/g. At the same time, it was found that the main components of phytosterol in rice bran oil did not change before and after deodorization, and they were stigmasterol, campesterol and β-sitosterol.
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