TY - JOUR
T1 - Fractionation of debranched starch with different degree of polymerization and its effect of epigallocatechin gallate
AU - Li, Wenhui
AU - Long, Shuyuan
AU - Li, Yanni
AU - Liu, Yuanyuan
AU - Yang, Wenge
AU - Hu, Yonghong
N1 - Publisher Copyright:
© 2024
PY - 2024/8/1
Y1 - 2024/8/1
N2 - Herein, five distinct degrees of polymerization (DP n‾) of debranched starch (DBS) were separated from native corn starch based on their differential solubility in aqueous/ethanol solutions of different volumetric ratios (1:1.5 and 1:3). Compared with the DBSP (DP n‾ 24.53 and DP n‾ 19.36), DBSs (DP n‾ 8.85 and DP n‾ 7.32) were found to have an amorphous crystal structure, resulting in lower thermal stability and an inability to form a complex with iodine. Furthermore, the proportion of rapidly digestible starch (RDS) in DBSP decreased, while the proportions of slow-digestible starch (SDS) and resistant starch (RS) increased. Additionally, the starch microparticles (SMPs) self-assembled from DBSp exhibit a larger particle size and a more regular shape than those formed by DBSs. Moreover, DBS-based SMPs (DBS-SMPs) with the maximum encapsulation efficiency and loading capacity of epigallocatechin gallate (EGCG) in DBSP3.0 (20) reached 88.67% and 22.35%, respectively. The EGCG loaded in EGCG@DBS-SMPs exhibited excellent radical scavenging activity.
AB - Herein, five distinct degrees of polymerization (DP n‾) of debranched starch (DBS) were separated from native corn starch based on their differential solubility in aqueous/ethanol solutions of different volumetric ratios (1:1.5 and 1:3). Compared with the DBSP (DP n‾ 24.53 and DP n‾ 19.36), DBSs (DP n‾ 8.85 and DP n‾ 7.32) were found to have an amorphous crystal structure, resulting in lower thermal stability and an inability to form a complex with iodine. Furthermore, the proportion of rapidly digestible starch (RDS) in DBSP decreased, while the proportions of slow-digestible starch (SDS) and resistant starch (RS) increased. Additionally, the starch microparticles (SMPs) self-assembled from DBSp exhibit a larger particle size and a more regular shape than those formed by DBSs. Moreover, DBS-based SMPs (DBS-SMPs) with the maximum encapsulation efficiency and loading capacity of epigallocatechin gallate (EGCG) in DBSP3.0 (20) reached 88.67% and 22.35%, respectively. The EGCG loaded in EGCG@DBS-SMPs exhibited excellent radical scavenging activity.
KW - Debranched starch
KW - Degrees of polymerization
KW - Starch microparticle
UR - http://www.scopus.com/inward/record.url?scp=85199810983&partnerID=8YFLogxK
U2 - 10.1016/j.lwt.2024.116541
DO - 10.1016/j.lwt.2024.116541
M3 - 文章
AN - SCOPUS:85199810983
SN - 0023-6438
VL - 205
JO - LWT
JF - LWT
M1 - 116541
ER -