Whiten Lignin-Based Sunscreen via Fractionation and Ultrasonic Cavitation
Xuwen Wu,
Mingsong Zhou,
Xinping Ouyang
et al.
Abstract:Lignin exhibits good potential in natural sunscreens,
but its dark
color is still an obstacle. Herein, a strategy combining ultrafiltration
and ultrasonic cavitation is developed to whiten enzymatic hydrolysis
lignin (EHL). Results show that fractions with the smallest molecular
weight possess the lightest color due to the lower bulk density and
fewer surface chromophores. The hydrophobic aromatic skeleton and
abundant phenol and carboxyl groups endow the fraction with good dispersibility
and reactivity. Oil c… Show more
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