Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7584230 | Food Chemistry | 2018 | 9 Pages |
Abstract
The phenolics profile of two new kiwifruit cultivars, Zespri® SunGold and Zespri® Sweet Green, were characterized and quantified for the first time using cyclic voltammetry, an electrochemical method, combined with HPLC. Results from the cyclic voltammetry revealed high correlations with those obtained from the spectrophotometry and HPLC methods, providing evidence to support the application of cyclic voltammetry as a rapid method in determining the phenolic profile and reducing power of kiwifruit extracts. Catechol-containing phenolics were identified as the major phenolic sub-class in the skins while flavonoids and phenolic acids were abundant in flesh of the tested cultivars. Epicatechin was the predominant phenolic compound and contributor to antioxidant capacity in all samples. Results also showed that SunGold and Sweet Green (both flesh and skin) exhibited significantly higher phenolic contents and antioxidant activities comparing with the well-established commercial 'Hayward' cultivar, indicating their commercial value and potential applications in food and nutraceuticals.
Keywords
Epicatechin gallate (PubChem CID: 107905)Epigallocatechin gallate (PubChem CID: 65064)Quercetin (PubChem CID: 5280343)Epicatechin (PubChem CID: 72276)trans-cinnamic acid (Pubchem CID: 444539)p-Coumaric acid (PubChem CID: 637542)AntioxidantsProtocatechuic acid (PubChem CID: 72)Syringic acid (PubChem CID: 10742)Ferulic acid (PubChem CID: 445858)Vanillic acid (PubChem CID: 8468)Caffeic acid (PubChem CID: 689043)Gallic acid (PubChem CID: 370)Phenolic compoundsRutin (PubChem CID: 5280805)Antioxidant activityCyclic voltammetryCatechin (PubChem CID: 9064)HPLCKiwifruit
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Yang Jiao, Paul A. Kilmartin, Mingtao Fan, Siew Young Quek,