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- Title
INTERMEDIATE MOISTURE PRUNES FUNCTIONAL INDICES AS AFFECTED BY HEAT PUMP DRYING AND STORAGE.
- Authors
Brashlyanova, B.; Karabadzhov, O.; Kozarekova-Yovkova, D.; Iliev, A.
- Abstract
The objective of the study was to evaluate the effect of water content, packing method, and temperature of the functional properties of intermediate moisture prunes (Prunus domestica cv. Stenley) during refrigerated storage. Drying process was carried out using heat pump dryer at initial temperature 45ºC, air flow velocities of 4.6 m.s-1 and initial air humidity of 8-10 % up to obtained intermediate moisture prunes of 45% and 60 %. Products were packed in plastic bags with or without vacuum were subsequently stored chilled at +4°C and frozen - at -10ºC. The effect was assessed by determining ascorbic acid, total polyphenols, anthocyanins content, and antioxidant activity in products. 60 % water content and vacuum packing positively affect on the functional properties of intermediate moisture prunes, whereas storage temperature did not influence.
- Subjects
PRUNE; FRUIT drying; AIR flow; MOISTURE; VITAMIN C; POLYPHENOLS
- Publication
New Knowledge Journal of Science / Novo Znanie, 2013, Vol 2, Issue 4, p100
- ISSN
1314-5703
- Publication type
Article