Sesame Oil Bleaching with Activated Rice Hull Ash

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

HSI-KUEI CHEN²  CHUN-I LIN¹  SHR-PING LIN¹ 

[1] Department of Chemical Engineering, National Taiwan University of Science and Technology;Department of Chemical Engineering, Hwa Hsia College of Technology and Commerce

关键词: Acid Activation;    Bleaching;    Rice Hull Ash;    Sesame Oil;   

DOI  :  10.1252/jcej.34.737

来源: Maruzen Company Ltd

【 摘 要 】

References(11)Cited-By(4)Bleaching of sesame oil with acid activated rice hull ash was investigated. Lovibond color indices of sesame oils before and after bleaching with the ash were determined to calculate the bleaching efficiency of the ash. Experimental results indicated that the ratio of rice hull ash/acid, agitation speed of activation and pH value of ash had no effect on the bleaching efficiency in the ranges of variables studied. Increase in activation temperature might increase the bleaching efficiency slightly when the temperature was low. When it was over 30°C, the efficiency remained constant. Bleaching efficiency was found to increase significantly with the ratio of rice hull ash/sesame oil. When the bleaching temperature was increased, the efficiency was found to increase slightly, reach a maximum at 120°C and then decrease. Increase in agitation speed of bleaching might increase the efficiency slightly. But it levelled off when the speed was over 80 rpm. The bleaching efficiency remained constant initially and reduced slightly with bleaching time when it was longer than 30 min.

【 授权许可】

Unknown