Publications by authors named "Han-Joo Yang"
Article Synopsis
- The study aimed to extract fruit (OFIF) using autoclave treatment, convert flavonoid glycosides into aglycones through enzymatic hydrolysis, and compare the antioxidant activity of the resulting extracts with those obtained by traditional methods.
- Results showed that the antioxidant activity and polyphenol and flavonoid content of the autoclave extract (AE) were higher than the water extract but slightly lower than the ethanol extract, suggesting autoclaving is an effective extraction technique.
- The transformation of flavonoids did not significantly change antioxidant activities, indicating that factors such as absorption rates and metabolic pathways may play a larger role in antioxidant efficacy rather than the chemical structure of the compounds.
A nano-sized double-walled carrier composed of chitosan and β-lactoglobulin (β-Lg) for oral administration of epigallocatechin gallate (EGCG) was developed to achieve a prolonged release of EGCG in the gastrointestinal tract. Carboxymethyl chitosan (CMC) solution was added dropwise to chitosan hydrochloride (CHC) containing EGCG to form a primary coating by ionic complexation. Subsequently, β-Lg was added to create a secondary layer by ionic gelation.
View Article and Find Full Text PDFChitosan (CS) was grafted with 0.1 and 0.5% (w/v) palmitic acid (PA) to improve its encapsulation efficiency (EE) and sustained release characteristics when forming CS microparticles.
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