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Major phytochemicals in apple cultivars: contribution to peroxyl radical trapping efficiency.
J Agric Food Chem. 2005 May 04; 53(9):3377-82.JA

Abstract

Forty-one samples of apples (peel plus pulp), obtained from eight cultivars, were examined for concentration of some important phytochemicals and for antioxidant activity expressed as peroxyl radical trapping efficiency. Five major polyphenolic groups plus ascorbate were identified and quantified by HPLC in the apple varieties. Oligomeric and polymeric proanthocyanidins were found to be about two-thirds of total polyphenols. The antioxidant efficiency of the apple extracts and of representative pure compounds for each group of phytochemicals was measured in a micellar system mimicking lipid peroxidation in human plasma. Although the amount of polyphenols measured by HPLC is similar to that measured by standard methods, the antioxidant efficiency calculated on the basis of the contribution of the pure compounds was lower than the antioxidant efficiency of the apple extracts. The higher efficiency of apples appears to be strictly related to the overwhelming presence of oligomeric proanthocyanidins.

Authors+Show Affiliations

Dipartimento di Chimica Biologica, Università di Padova, via G. Colombo 3, 35121 Padova, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15853375

Citation

Vanzani, Paola, et al. "Major Phytochemicals in Apple Cultivars: Contribution to Peroxyl Radical Trapping Efficiency." Journal of Agricultural and Food Chemistry, vol. 53, no. 9, 2005, pp. 3377-82.
Vanzani P, Rossetto M, Rigo A, et al. Major phytochemicals in apple cultivars: contribution to peroxyl radical trapping efficiency. J Agric Food Chem. 2005;53(9):3377-82.
Vanzani, P., Rossetto, M., Rigo, A., Vrhovsek, U., Mattivi, F., D'Amato, E., & Scarpa, M. (2005). Major phytochemicals in apple cultivars: contribution to peroxyl radical trapping efficiency. Journal of Agricultural and Food Chemistry, 53(9), 3377-82.
Vanzani P, et al. Major Phytochemicals in Apple Cultivars: Contribution to Peroxyl Radical Trapping Efficiency. J Agric Food Chem. 2005 May 4;53(9):3377-82. PubMed PMID: 15853375.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Major phytochemicals in apple cultivars: contribution to peroxyl radical trapping efficiency. AU - Vanzani,Paola, AU - Rossetto,Monica, AU - Rigo,Adelio, AU - Vrhovsek,Urska, AU - Mattivi,Fulvio, AU - D'Amato,Elvira, AU - Scarpa,Marina, PY - 2005/4/28/pubmed PY - 2005/6/29/medline PY - 2005/4/28/entrez SP - 3377 EP - 82 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 53 IS - 9 N2 - Forty-one samples of apples (peel plus pulp), obtained from eight cultivars, were examined for concentration of some important phytochemicals and for antioxidant activity expressed as peroxyl radical trapping efficiency. Five major polyphenolic groups plus ascorbate were identified and quantified by HPLC in the apple varieties. Oligomeric and polymeric proanthocyanidins were found to be about two-thirds of total polyphenols. The antioxidant efficiency of the apple extracts and of representative pure compounds for each group of phytochemicals was measured in a micellar system mimicking lipid peroxidation in human plasma. Although the amount of polyphenols measured by HPLC is similar to that measured by standard methods, the antioxidant efficiency calculated on the basis of the contribution of the pure compounds was lower than the antioxidant efficiency of the apple extracts. The higher efficiency of apples appears to be strictly related to the overwhelming presence of oligomeric proanthocyanidins. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/15853375/Major_phytochemicals_in_apple_cultivars:_contribution_to_peroxyl_radical_trapping_efficiency_ L2 - https://doi.org/10.1021/jf040482o DB - PRIME DP - Unbound Medicine ER -