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|Research center of Embrapa/Collection:||Embrapa Semiárido - Artigo em periódico indexado (ALICE)|
|Type of Material:||Artigo em periódico indexado (ALICE)|
|Authors:||CAZARIN, C. B. B.|
CORREA, L. C.
SILVA, J. K. da
BATISTA, A. G.
FURLAN, C. P. B.
BIASOTO, A. C. T.
PEREIRA, G. E.
RYBKA, A. C. P.
MARÓSTICA JUNIOR, M. R.
|Additional Information:||LUIZ CLAUDIO CORREA, CPATSA; ALINE TELLES BIASOTO MARQUES, CPATSA; GIULIANO ELIAS PEREIRA, CNPUV / CPATSA; ANA CECILIA POLONI RYBKA, CPATSA.|
|Title:||Tropical Isabella grape juices: bioactive compounds and antioxidant power depends on harvest season.|
|Publisher:||Journal of Food Science and Engineering, El Monte v. 3, n. 2, p. 64-70, fev. 2013.|
|Description:||Grapes are important sources of antioxidants compounds and one of the most used varieties to elaborate juices is 'Isabel', or 'Isabella', as it is called in North-America. This study aimed to evaluate the antioxidant activity of Isabella grape juices from the tropical semi-arid climate produced in Brazil on March and September, 2010. Total phenolics and anthocyanins were determined, as well as the antioxidant capacity by DPPH, FRAP and hydrophilic ORAC methods. Test T was used to compare statistical difference at 5% of significance level. As expected, the results showed that the season can play a significant role on phenolics content and antioxidant power. Polyphenols content in juices varied from 82.9 ± 0.92 to 102.2 ± 1.59 mg GAE 100 mL-1 and anthocyanins content ranged from 44.3 ± 2.01 to 129.5 ± 2.82 mg cyanidin-3-glucoside 100 mL-1. Regression analyses showed a high correlation of antioxidant capacity and anthocyanins content. Grapes from Sao Francisco River Valley demonstrated to be a good source of antioxidant for human diet.|
|Appears in Collections:||Artigo em periódico indexado (CPATSA)|