Evaluation of Phenolic Compounds in Commercial Fruit Juices and Fruit Drinks
- 16 March 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 55 (8), 3148-3157
- https://doi.org/10.1021/jf062970x
Abstract
The total phenolic content of 13 commercially available fruit juices and juice drinks, selected to represent the most popular juice flavors in the United Kingdom, were analyzed using the Folin−Ciocalteu assay. Individual phenolic compounds were identified and quantified using HPLC-PDA-MS2. The catechin content and degree of polymerization of proanthocyanidins were also analyzed. Purple grape juice contained the largest number of individual phenolic compounds and also the highest concentration of total phenolics. The main components were flavan-3-ols, anthocyanins, and hydroxycinnamates, which accounted for 93% of the total phenolic content. In contrast, white grape juice, which contained principally hydroxycinnamates, had the lowest total phenolic content. Antioxidant activity was measured using the ORAC and FRAP assays, and the data obtained were in broad agreement with total phenol content. In view of the recent findings of the Kame project indicating that long-term fruit juice consumption can provide protection against Alzheimer's disease (Dai et al. Am. J. Med. 2006, 379, 464−475), it is suggested that the protective effects may be enhanced by consumption of a combination of juices rich in phenolics and containing a diverse variety of individual phenolic compounds, namely, juices derived from purple grapes, grapefruit, cranberries, and apples. Keywords: Fruit juices; phenolics; antioxidant capacity; HPLC−tandem mass spectrometryKeywords
This publication has 21 references indexed in Scilit:
- Grape juice causes endothelium-dependent relaxation via a redox-sensitive Src- and Akt-dependent activation of eNOSCardiovascular Research, 2007
- Flavonoid and chlorogenic acid profiles of English cider applesJournal of the Science of Food and Agriculture, 2007
- Red wine procyanidins and vascular healthNature, 2006
- Flavonoid Glycosides in Bergamot Juice (Citrus bergamia Risso)Journal of Agricultural and Food Chemistry, 2006
- Anthocyanin Metabolism in Rats and Their Distribution to Digestive Area, Kidney, and BrainJournal of Agricultural and Food Chemistry, 2005
- Drinking your health? It's too early to sayNature, 2003
- Inhibition of the Adherence of P-FimbriatedEscherichia colito Uroepithelial-Cell Surfaces by Proanthocyanidin Extracts from CranberriesNew England Journal of Medicine, 1998
- Risk Factors for Lung Cancer and for Intervention Effects in CARET, the Beta-Carotene and Retinol Efficacy TrialJNCI Journal of the National Cancer Institute, 1996
- Alcohol consumption, serum low density lipoprotein cholesterol concentration, and risk of ischaemic heart disease: six year follow up in the Copenhagen male studyBMJ, 1996
- Wine, alcohol, platelets, and the French paradox for coronary heart diseaseThe Lancet, 1992