Construction of magnetic switchable Pickering interfacial catalysis system and its application in the hydrolysis of crude rice bran oil

• Published in: International Journal of Food Science & Technology
• Main Authors: Cheng, Jie, Wang, Ning, Li, Na, Zhou, Xiaonan, Yu, Dianyu, Jiang, Lianzhou
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2022
• Subjects: Antarc*; Antarctica
• Online Access: http://dx.doi.org/10.1111/ijfs.15587; https://onlinelibrary.wiley.com/doi/pdf/10.1111/ijfs.15587; https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ijfs.15587

SUMMARY The high refining cost of traditional rice bran oil with high acid value and its large environmental impact have limited its further application. In this study, a lipase‐catalysed hydrolysis reaction of crude rice bran oil at the oil–water interface was performed using a Pickering emulsion system stabilised by modified magnetic microcrystalline cellulose (MMC) particles. The results revealed that the modified MMC particles exhibited a rod‐like structure, and a contact angle of 84.8°. In addition, the stability of the Pickering emulsion can be enhanced when the modified MMC was used as an emulsifier, and at an optimal addition amount of 2.0wt.%. The saturation magnetisation value of the emulsifier decreased from 38.8 to 8.9 emu g −1 after 12 reuses. Furthermore, the hydrolysis rates of crude rice bran oil in the Pickering emulsion system and a two‐phase system at a Candida antarctica lipase B (CALB) content of 2mg mL −1 were 92.8% and 58.8%, respectively. In addition, the relative activity of CALB after 10 reuses was 71.8%. These findings provide a sustainable interface biocatalysis method and provide ideas for the rational development of high acid value oils.