Abstract
SummaryApricots as five varieties of Malatya region have been assayed as fresh, sun‐ and sulphited‐dried samples, using the antioxidant capacity measurement methods Cupric Ion Reducing Antioxidant Capacity (CUPRAC) and 2,2′‐azinobis (3‐ethylbenzothiazoline‐6‐sulphonic acid) (ABTS), and total polyphenol measurement method Folin. The novel reagent for the CUPRAC total antioxidant capacity assay, bis(neocuproine)copper(II) chloride, was easily accessible, stable, selective and responding to all antioxidants. Sulphite (normally contributing to the colour formed in the CUPRAC assay) was removed prior to assay on a strongly basic anion exchanger at pH 3 in the form of HSO. The CUPRAC findings correlated well with the results of ABTS/TEAC and Folin assays (r = 0.93), all being electron‐transfer‐based antioxidant capacity assays. The calibration lines of pure flavonoids individually and in standard‐added apricot extracts were parallel, indicating the additivity of absorbances in CUPRAC. This work reports for the first time the use of a novel spectrophotometric method (CUPRAC) for the assay of both total antioxidant capacity and sulphite levels of diverse apricot samples.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: International Journal of Food Science & Technology
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.