期刊
FOOD RESEARCH INTERNATIONAL
卷 49, 期 1, 页码 184-192出版社
ELSEVIER
DOI: 10.1016/j.foodres.2012.07.060
关键词
Dietary fibre concentrates; Prunus persica L.; Ethanol treatment; Drying technique; Characterization
资金
- University of Buenos Aires [UBACyT EX-089, UBACyT 20020100100726]
- National Agency of Scientific and Technological Promotion of Argentina [ANPCyT-PICT 38239]
- National Scientific and Technical Research Council of Argentina [CONICET-PIP 11220090100531]
In order to obtain rich dietary fibre concentrates with enhanced functional properties from peach peel and pulp, a treatment with ethanol (96% v/v) was performed previous to drying under 30 degrees C forced air convection for 7 h or under freeze drying. All the dietary fibre concentrates isolated were enriched in cell wall polymers and a high polyphenol content was associated to them. The yield of those proceeding from peel almost doubled the one of concentrates obtained from pulp and high hydration capacities were shown by all the concentrates. Fractions from peel showed the darkest colour. Oil holding capacity (1.81-2.4 g/g) was higher than the one reported in bibliography for peach bagasse (1.02 g/g) and quince wastes (1.59 g/g). Concerning the effect of the drying technique used, it was observed that air drying gave origin to pulp dietary fibre concentrates of lower oil holding capacity and less solid behaviour than freeze drying. (C) 2012 Elsevier Ltd. All rights reserved.
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