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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

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

Revista

Título: Food and Chemical Toxicology

Vol. 46 Nº 6

Páginas: 2230-2235

ISSN: 0278-6915

Editora: Elsevier

Indexação

ISI Web of Knowledge - 72 Citações

ISI Web of Science

Scopus - 102 Citações

Classificação Científica

CORDIS: Ciências da Saúde

FOS: Ciências agrárias > Outras ciências agrárias

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6