The polyphenol content and antioxidant activities of the main edible vegetables in northern Vietnam

Journal of Nutritional Science and Vitaminology
Nghiem Nguyet ThuKazuo Kondo

Abstract

Oxidized low-density lipoprotein (LDL) is considered a risk factor in atherosclerosis, and polyphenols are the potential agents to inhibit the oxidation of LDL. We determined the polyphenol contents and the antioxidant activities of commonly consumed vegetables in Vietnam and assessed the quantity of the polyphenol intake from vegetables in the current Vietnamese diet. The polyphenol contents in 30 kinds of vegetables was determined by the Folin-Ciocalteu method. The antioxidant activities of vegetables were evaluated by measuring the oxidation of LDL and the reduction of the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. In this study, some herbs and edible wild vegetables possessed high contents of polyphenols and antioxidant activities. Among green vegetables, sweet potato leaves showed both a high polyphenol content and antioxidant activity. The mean polyphenol daily intake of the Vietnamese was a 595 mg catechin equivalent. Water spinach, a kind of green vegetable, contributed the highest amount (45%) of the total polyphenol intake, followed by other green vegetables. Neither herbs nor edible wild vegetables contributed significantly to the total polyphenol intake due to their low consumption. Green vegetables are therefore...Continue Reading

Citations

Sep 19, 2007·Journal of Nutritional Science and Vitaminology·Truong Tuyet MaiNguyen Van Chuyen
Nov 11, 2010·Fitoterapia·J H A PaulT Tikasingh
Jun 12, 2010·Molecular Nutrition & Food Research·Sara ArranzFulgencio Saura-Calixto
Jul 17, 2015·Oxidative Medicine and Cellular Longevity·Loai Basheer, Zohar Kerem
Sep 4, 2013·The Cochrane Database of Systematic Reviews·Cheow Peng Ooi, Seng Cheong Loke
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hoang Chinh NguyenMeng-Yuan Huang
Apr 24, 2021·Journal of Nutritional Science·Cheng-Tzu HsiehKuo-Liong Chien

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