Effects of storage temperature and duration on chemical properties, proximate composition and selected bioactive components of pomegranate (Punica granatum L.) arils
LWT-FOOD SCIENCE AND TECHNOLOGY, (июля 2014)DOI: \%7B10.1016/j.lwt.2014.02.030\%7D
Аннотация
Effects of storage temperature on nutritional composition of pomegranate cultivars ('Arakta', `Bahgwa' and `Ruby') were investigated. Pomegranate arils were stored at 1, 4, and 8 degrees C at 95\% relative humidity for 14 days. Arils stored at 1 degrees C were removed from storage after 14 days and kept at ambient conditions for one day. Anthocyanins, ascorbic acid and proximate composition were measured on day 0, 7, 14 and 15. O-2 consumption and CO2 production increased at elevated temperatures. Proximate composition of pomegranate arils was similar amongst cvs.: 0.8 g/g moisture, 5.2 g kg(-1) ash, 13-15 g kg(-1) fat, 27 -29 g kg(-1) dietary fibre, 11-12 g kg(-1) protein, 140-150 g kg(-1) carbohydrate and 310-320 kJ 100 g(-1) energy. `Arakta' had highest titratable acidity (TA) level (03 +/- 0.01 g 100 mL(-1)) and ascorbic acid (26.0 +/- 1.3 mg kg(-1)). Low beta-carotene levels (1.7-3.5 mg kg(-1)) were detected in all samples. Nutritional composition of arils was not significantly affected at 1 and 4 degrees C for 14 d. Temperature did not affect total soluble solids (TSS), but increased TA and reduced TSS/TA. No mould growth was observed in arils stored at 1 degrees C after 14 d. (C) 2014 Elsevier Ltd. All rights reserved.