Study on antioxidant activity and stability of Rehmannia glutinosa residues pigment
ZHAO Tong-xi
MIN Yan
LUO Jing-xin
CHENG Shi-zhe
QIU Bin-hang
WANG Ya-qi
QIAO Han-zhen
WANG Jin-rong
Abstract：The experiment was to study Rehmannia glutinosa residue antioxidant and pigment stability.The pigment of Rehmannia glutinosa residue was extracted by ultrasonic-assisted extraction method,and the scavenging rates of ABTS free radicals,DPPH free radicals and hydroxyl radicals of Rehmannia glutinosa residue were detected.The effect of temperature,light,metal ions and pH value on pigment stability of Rehmannia glutinosa residue were investigated.The results showed that the pigment of Rehmannia glutinosa residue had strong antioxidant activity,and had certain scavenging ability on DPPH free radicals,ABTS free radicals and hydroxyl free radicals.The stability test results showed that the pigment of Rehmannia glutinosa had good thermal stability and wide pH value stability.It could withstand ultraviolet light and strong acid and metal ions would reduce the stability of pigment.The study indicates that the pigment of Rehmannia glutinosa has good antioxidant and stability,which has the potential to be developed into feeding pigment.
Keywords：Rehmannia glutinosa residuespigmentantioxidantstability
Publication Date：2023-08-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 71-76 )