Effects of enzymatic free fatty acid reduction process on the composition and phytochemicals of rice bran oil

Synthesis of lipase-hydrogel microspheres and their application in deacidification of high-acid rice bran oil

“…6,7 Numerous deacidification methods have been reported to reduce free fatty acids in high-acid rice bran oil (HRBO), such as solvent extraction, chemical or enzymatic esterification, supercritical fluid extraction and alkali neutralization. [8][9][10][11] Among these methods, enzymatic esterification has the advantages of environmental friendliness, low cost, mild reaction conditions and high catalytic activity. 12 More importantly, this method can convert free fatty acids into glycerides and other esters, which are retained in oil as functional components.…”

Enzymatic pretreatment of rice bran acid oil before ?-oryzanol recovery

“…Recently, (D. Li et al, 2021) showed that mild reaction conditions of enzymatic deacidification and degumming of crude RBO led to the high retention levels of γ-oryzanol (ca. 70%), while the enzymatic deacidification described in the study by (Sun et al, 2021) did not noticeably affect γ-oryzanol content. The results from these previous studies suggest high potential for the application of enzymatic hydrolysis for glycerides removal from RBAO prior to γ-oryzanol isolation which, to the best of our knowledge, has not been thoroughly and systematically studied before.…”

“…Enzymatic processes have also recently been actively investigated for deacidification of crude RBO through various reactions, such as amidation (X. Wang, Wang, & Wang, 2017) and esterification (Sun et al, 2021) which offer several advantages over the traditional chemical and physical processes including high catalytic specificity and minimal generation of toxic waste. While the enzymatic processes have generally provided high substrate conversion, findings on their effects on other valuable compounds in the feedstock, e.g.…”