Open AccessInfusion efficiency of fluorescein derivatives of different molecular sizes into various starches under atmospheric and high hydrostatic pressures
Author(s) -
Kye Sun Kim,
Seon-Min Oh,
Seung Hyun Choi,
Jong Hyun Choi,
Jong Hoa Bae,
Hui yun Kim,
Sang Jin Ye,
Moo-Yeol Baik
Publication year - 2021
Publication title -
food science and biotechnology/food science and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.595
H-Index - 38
eISSN - 2092-6456
pISSN - 1226-7708
DOI - 10.1007/s10068-021-00972-2
Subject(s) - corn starch , atmospheric pressure , chemistry , fluorescein , starch , hydrostatic pressure , fluorescein isothiocyanate , chromatography , waxy corn , analytical chemistry (journal) , food science , fluorescence , thermodynamics , physics , quantum mechanics , oceanography , geology
Fluorescein isothiocyanate-dextrans (FDs) of different molecular weights were infused into corn, waxy rice, tapioca, and potato starches under atmospheric and high hydrostatic pressures (HHP). FD4, FD10, FD20, and FD40 (Mw 4000, 10,000, 20,000, and 40,000, respectively) were used as infusion materials. Confocal laser scanning microscopy confirmed that all FDs except FD40 infused into corn, waxy rice, and tapioca starches. However, no FDs infused into potato starch. Corn starch had the highest amounts of infused FDs. As molar mass increased, the amount of infused FD decreased in all starches. The infused amounts of FDs in corn starch were similar at 200-300 MPa and atmospheric pressure. Infusion of FDs at 400 MPa was reduced due to partial gelatinization. These results confirm that infusion efficiency is inversely proportional to the molecular weight of the infused material and large materials (Mw > 40,000) cannot be infused into starch granules under atmospheric pressure or HHP.