In:
International Journal of Food Science & Technology, Wiley, Vol. 52, No. 3 ( 2017-03), p. 781-787
Abstract:
The aim of this study was to evaluate the effects of freeze concentration of strawberry juice on content of total phenolic, anthocyanins content and antioxidant activity of the concentrated fluid and the ice obtained. An increase in the values of phenolic content was observed in the concentrate fraction for all the freeze concentration stages (five stages). The process efficiency presented a reduction when compared with the first stage, and however, the average efficiency remained around 65% in all the stages. The concentration of pelargonidin‐3‐ O ‐glycoside present in samples was increased in all stages. Furthermore, the antioxidant activity of the concentrated fluid of each stage, measured by DPPH and ABTS methods, was significantly higher in comparison with the juice feed. Also, antioxidant activity can be correlated with the content of pelargonidin‐3‐ O ‐glycoside presented in the strawberry juice. Freeze concentration can be considered a good alternative for improving the antioxidant activity of strawberry juice.
Type of Medium:
Online Resource
ISSN:
0950-5423
,
1365-2621
DOI:
10.1111/ijfs.2017.52.issue-3
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2016518-3
detail.hit.zdb_id:
2401430-8
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