ANTIOXIDANT ACTIVITY OF BLACKBERRY ( Rubus sp. ) GENOTYPES FROM THE SOUTHERN REGION OF BRAZIL
Bol. Centro Pesqui. Process. Aliment
; 31(01): 83-98, jan. 2013.
Article
in English
| LILACS
| ID: biblio-986284
Responsible library:
BR16.1
ABSTRACT
The antioxidant activity and bioactive compounds of different blackberry fruit genotypes from the major Brazilian producer region (three cultivars and four selections) were evaluated and compared to the Cherokee cultivar. Phenolic and anthocyanic extracts were obtained and evaluated for each fruit genotype. The phenolic extracts of selections 02/96 and 07/001 presented higher antioxidant activity than those of cultivars in most assays. This activity was partially correlated to the higher amount of total phenolics in these samples. Thus, the phenolic compounds are probably the major responsible for the antioxidant activity in the diphenyl-2-picrylhydrazyl radical scavenging assay (DPPH), ferric reducing antioxidant power (FRAP) assay and thiobarbituric acid reactive substances (TBARS) assay. Quercetin seems to be responsible for the antioxidant activity of blackberry phenolic extracts in the ß-carotene bleaching assay. Concerning anthocyanic extracts, the selection 02/96 and Cherokee cultivar from harvest 2007 had higher antioxidant activity than the other genotypes in most assays. Anthocyanins appear to be the major responsible for the antioxidant activity of anthocyanic extracts in the DPPH and FRAP assays, although ascorbic acid also contributed to the DPPH antioxidant activity. Selection 02/96 appears to have higher antioxidant activity than the commercial cultivars cultivated in the southern Brazil and appears to be promising for nutritional and health purposes.
Full text:
Available
Collection:
International databases
Database:
LILACS
Main subject:
Ascorbic Acid
/
Polyphenols
/
Rubus
/
Anthocyanins
/
Antioxidants
Type of study:
Evaluation study
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Bol. Centro Pesqui. Process. Aliment
Journal subject:
Nutritional Sciences
/
Nutricionistas
Year:
2013
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
EMBRAPA Clima Temperado/BR
/
Universidade Federal de Santa Maria/BR
/
Universidade Federal do Rio Grande do Sul/BR