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Transformation of Corn Lignin into Sun Cream Ingredients
Author(s) -
Yang See Jie,
Song Song,
Xiao Yiying,
Trang Pham Thuy,
Zhao Yu,
Lapkin Alexei,
Yan Ning
Publication year - 2021
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202002739
Subject(s) - chemistry , corn stover , catalysis , transesterification , amberlite , yield (engineering) , ferulic acid , hydrolysis , organic chemistry , bran , lignin , food science , raw material , materials science , adsorption , metallurgy
Production of value‐added chemicals from lignocellulose is one of the key strands of the emerging bio‐economy. A synthetic approach has been developed to produce p ‐methoxy coumarate esters from waste corn stover and corn bran, and further transform these compounds into consumer products. In the first step, p ‐coumaric acid ( p CA) and ferulic acid (FA) are released through mild alkaline hydrolysis of corn waste, in more than 20 mg g −1 yield (10 wt % based on lignin content). Subsequently, heterogeneous solid acids catalyze the esterification of p CA with various alcohols. Amberlite IR‐15 shows the best catalytic performance, owing to its optimal acid density, large surface area, and suitable pore diameter. The solid acid catalyst can be recycled with slight activity loss and regenerated by acid washing and vacuum drying. Finally, methylation of p ‐coumarate ester to give target product p ‐methoxy coumarate esters is carried out by using commercially available and low‐cost inorganic bases (e. g., K 2 CO 3 ). Base‐catalyzed transesterification of methyl p ‐methoxy coumarate to p ‐methoxy coumarate esters is also investigated.