A modified hyaluronic acid and/or a salt thereof comprises a glycerin skeleton-containing group shown by the following general formula (1),
-O-CH2-CHOH-CH2-OR1 (1)
wherein, R1 represents a linear or branched alkyl group, or a linear or branched alkenyl group.
改性透明质酸和/或其盐包含一个由以下通式(1)所示的含
甘油骨架基团、
-O-
CH2-CHOH- -OR1(1)
其中,R1 代表直链或支链烷基,或直链或支链烯基。