Antioxidant activity and bioactive compounds of ten Portuguese regional and commercial almond cultivars

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Joao C M Barreira (Author) Other; Isabel C F R Ferreira (Author) Other; Beatriz B P P Oliveira (Author) FFUP; Jose Alberto Pereira (Author) Other

Journal

Title: Food and Chemical Toxicology

Vol. 46 No. 6

Pages: 2230-2235

ISSN: 0278-6915

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 72 Citations

ISI Web of Science

Scopus - 102 Citations

Scientific classification

CORDIS: Health sciences

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-003-YSY

DOI: 10.1016/j.fct.2008.02.024

Resumo (PT): The antioxidant properties of different almond cultivars (cv.), either regional (Casanova, Duro Italiano, Molar, Orelha de Mula and Pegarinhos cv.) or commercial (Ferraduel, Ferranhês, Ferrastar and Guara cv.) were evaluated through several chemical and biochemical assays: DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, reducing power, inhibition of β-carotene bleaching, inhibition of oxidative hemolysis in erythrocytes, induced by 2,2′-azobis(2-amidinopropane)dihydrochloride (AAPH), and inhibition of thiobarbituric acid reactive substances (TBARS) formation in brain cells, all used as models for the lipid peroxidation damage in biomembranes. The EC50 values were calculated for all the methods in order to evaluate the antioxidant efficiency of each almond cultivar. Bioactive compounds such as phenols and flavonoids were also obtained and correlated to antioxidant activity. The results obtained were quite heterogeneous, revealing significant differences among the cultivars assayed. Duro Italiano cv. revealed better antioxidant properties, presenting lower EC50 values in all assays, and the highest antioxidants contents. The protective effect of this cultivar on erythrocyte biomembrane hemolysis was maintained during 4 h. <br> <br> Keywords: Almond; Antioxidants; Scavenging effects; Peroxidation; Hemolysis inhibition <br> <a target="_blank" href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T6P-4S03RJV-1&_user=2460038&_coverDate=06%2F30%2F2008&_rdoc=44&_fmt=high&_orig=browse&_srch=doc-info(%23toc%235036%232008%23999539993%23688804%23FLA%23display%23Volume)&_cdi=5036&_sort=d&_docanchor=&_ct=56&_acct=C000057398&_version=1&_urlVersion=0&_userid=2460038&md5=eea4db8b80df916638d68da8b9aa4487"> Texto integral </a> <br> <br>

Abstract (EN): The antioxidant properties of different almond cultivars (cv.), either regional (Casanova, Duro Italiano, Molar, Orelha de Mula and Pegarinhos cv.) or commercial (Ferraduel, Ferranhes, Ferrastar and Guara cv.) were evaluated through several chemical and biochemical assays: DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, reducing power, inhibition of beta-carotene bleaching, inhibition of oxidative hemolysis in erythrocytes, induced by 2,2'-azobis(2-amidinopropane)dihydrochloride (AAPH), and inhibition of thiobarbituric acid reactive substances (TBARS) formation in brain cells, all used as models for the lipid peroxidation damage in biomembranes. The EC50 values were calculated for all the methods in order to evaluate the antioxidant efficiency of each almond cultivar. Bioactive compounds such as phenols and flavonoids were also obtained and correlated to antioxidant activity. The results obtained were quite heterogeneous, revealing significant differences among the cultivars assayed. Duro Italiano cv. revealed better antioxidant properties, presenting lower EC50 values in all assays, and the highest antioxidants contents. The protective effect of this cultivar on erythrocyte biomembrane hemolysis was maintained during 4 h.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6