Journal of Food, Agriculture and Environment

Phenolic composition and antioxidant activity of selected apple genotypes

Author(s):

Shahrokh Khanizadeh ^1*, Rong Tsao ², Djamila Rekika ¹, Raymond Yang ², Jennifer DeEll ³

Recieved Date: 2006-09-11, Accepted Date: 2006-11-29

Abstract:

The phenolic composition of eleven apple genotypes was determined in the flesh and peel by high performance liquid chromatography (HPLC), total phenolic content (TPC) by the Folin-Ciocalteu method, and antioxidant capacity using ferric reducing antioxidant power (FRAP). HPLC analysis identified and quantified several groups of phenolic compounds: procyanidins, hydroxycinnamates, acids, anthocyanins, flavonols and dihydrochalcones. Procyanidins were the most predominant group in both flesh and peel and contributed 52.4 and 44% of the total phenolic index (TPI), respectively. Quercetin glucosides were almost exclusively found in the peel, while cyanidin 3-galactoside was found only in red apple peel. The profile of phenolic compounds varied among the eleven genotypes and the peel showed higher concentrations than the flesh. Among the studied genotypes Reinette Russet and SJCA38R6A74 had the highest and the lowest concentrations of total phenolics respectively. The total phenolics (TPI/TPC) of both flesh and peel extracts correlated well with antioxidant capacity as estimated by the FRAP assay (R² = 0.87, 0.76, 0.92, respectively), with the exception of TPC from the apple peel determined with FC (R² = 0.52). The low chlorogenic acid and zero total flavanol content in flesh of ‘SJCA38R6A74’ tended to be associated with no browning compared to other cultivars.

Keywords:

Cultivar, HPLC, total phenolic content (TPC), antioxidant activity FRAP, Malus

---

Journal: Journal of Food, Agriculture and Environment
Year: 2007
Volume: 5
Issue: 1
Category: Food and Health
Pages: 61-66

---

Full text for Subscribers

---

Information:

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

---

Purchase this Article:   20 Purchase PDF Order Reprints for 15

---

Share this article :