TY - JOUR
T1 - Antioxidant activities of phenolic compounds from Ziziphus jujuba Mill extract using subcritical water
AU - Ko, Min Jung
AU - Kwon, Mi Ri
AU - Chung, Myong Soo
N1 - Publisher Copyright:
©The Korean Society of Food Science and Technology
PY - 2021/6
Y1 - 2021/6
N2 - Subcritical water extraction (SWE) is an eco-friendly extraction method that uses only purified water as a solvent under high temperature and high pressure conditions. In this study, total phenolics, and antioxidant activity were evaluated in Ziziphus jujuba Mill extracts from subcritical water obtained by varying the extraction temperature (110-190oC) and extraction time (1-20 min). Total phenolics was maximized with extraction at 190oC for 15 min (67.79±3.45 mg gallic acid equivalent/g jujube). The 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity (48.84±4.74%) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) free radical scavenging activity (84.75±1.15%) were maximal at extraction conditions of 190oC, for 20 min. All jujube extracts prepared using SWE had higher total phenolics and antioxidant activities than extracts prepared using organic solvent extraction (60oC, 120 min), including methanol and ethanol. SWE could be an excellent alternative to organic solvents for extracting phenolics and antioxidant compounds.
AB - Subcritical water extraction (SWE) is an eco-friendly extraction method that uses only purified water as a solvent under high temperature and high pressure conditions. In this study, total phenolics, and antioxidant activity were evaluated in Ziziphus jujuba Mill extracts from subcritical water obtained by varying the extraction temperature (110-190oC) and extraction time (1-20 min). Total phenolics was maximized with extraction at 190oC for 15 min (67.79±3.45 mg gallic acid equivalent/g jujube). The 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity (48.84±4.74%) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) free radical scavenging activity (84.75±1.15%) were maximal at extraction conditions of 190oC, for 20 min. All jujube extracts prepared using SWE had higher total phenolics and antioxidant activities than extracts prepared using organic solvent extraction (60oC, 120 min), including methanol and ethanol. SWE could be an excellent alternative to organic solvents for extracting phenolics and antioxidant compounds.
KW - Antioxidant activity
KW - Phenolic compounds
KW - Subcritical water extraction
KW - Ziziphus jujuba Mill
UR - http://www.scopus.com/inward/record.url?scp=85117234085&partnerID=8YFLogxK
U2 - 10.9721/KJFST.2021.53.3.329
DO - 10.9721/KJFST.2021.53.3.329
M3 - Article
AN - SCOPUS:85117234085
SN - 0367-6293
VL - 53
SP - 329
EP - 333
JO - Korean Journal of Food Science and Technology
JF - Korean Journal of Food Science and Technology
IS - 3
ER -