Tran Nguyen An Sa, An Phan Ngoc Quynh, Ta Thi Hong Nhung, et al. QUANTIFICATION OF TOTAL POLYPHENOL CONTENT IN FRUITS AND BULBS OF Allium schoenoprasum L. USING UV-VIS SPECTROSCOPY WITH FOLIN-CIOCALTEU REAGENT. HUIT_OJS. 2026;26(4):74-86. doi:10.62985/j.huit_ojs.vol26.no4.669