Document Detail

Determination of antioxidant constituents in cactus pear fruits.
MedLine Citation:
PMID:  20811778     Owner:  NLM     Status:  MEDLINE    
An analytical study was carried out on the presence of antioxidant constituents and the in vitro antioxidant capacity in the extracts of three species of Spanish red-skinned cactus pear fruits (Opuntia ficus-indica, Opuntia undulata and Opuntia stricta). The cactus pear fruit extracts were analyzed for determined constituents: ascorbic acid, flavonoids (quercetin, isorhamnetin, myricetin, kaempferol and luteolin), betalains, taurine, total carotenoids and total phenolics. The antioxidant capacity was assessed by means of two different methods: the 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (Trolox equivalent antioxidant capacity) method and the 2,2-diphenyl-1-picrylhydrazyl radical method. Opuntia ficus-indica fruit extract had the strongest antioxidant capacity and taurine content. O. stricta fruits were the richest in ascorbic acid and total phenolics, whereas O. undulata fruits showed the highest carotenoid content. Quercetin and isorhamnetin were the main flavonoids detected. This study provides basic information on the presence of bioactive compounds and antioxidant capacity in extracts of cactus pear fruits, in order to consider these extracts as ingredient for the production of health-promoting food.
José A Fernández-López; Luís Almela; José M Obón; Rosario Castellar
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Plant foods for human nutrition (Dordrecht, Netherlands)     Volume:  65     ISSN:  1573-9104     ISO Abbreviation:  Plant Foods Hum Nutr     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-09-24     Completed Date:  2011-01-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8803554     Medline TA:  Plant Foods Hum Nutr     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  253-9     Citation Subset:  IM    
Departamento de Ingeniería Química y Ambiental, Universidad Politécnica de Cartagena (UPCT), Paseo Alfonso XIII 52, E-30203, Cartagena, Murcia, Spain.
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MeSH Terms
Antioxidants / analysis*
Ascorbic Acid / analysis
Biphenyl Compounds / metabolism
Carotenoids / analysis
Chromans / metabolism
Flavonoids / analysis
Flavonols / analysis
Fruit / chemistry*
Opuntia / chemistry*
Phenols / analysis
Picrates / metabolism
Plant Preparations / chemistry*
Quercetin / analysis
Taurine / analysis
Reg. No./Substance:
0/Antioxidants; 0/Biphenyl Compounds; 0/Chromans; 0/Flavonoids; 0/Flavonols; 0/Phenols; 0/Picrates; 0/Plant Preparations; 0/polyphenols; 107-35-7/Taurine; 117-39-5/Quercetin; 1898-66-4/2,2-diphenyl-1-picrylhydrazyl; 36-88-4/Carotenoids; 480-19-3/3-methylquercetin; 50-81-7/Ascorbic Acid; 56305-04-5/6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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