Osmotic Dehydration/Impregnation Kinetics of Padrón Pepper (Capsicum annuum L. Longum) with Sodium Chloride Solutions: Process Modelling and Colour Analysis
- 1 June 2006
- journal article
- research article
- Published by SAGE Publications in Food Science and Technology International
- Vol. 12 (3), 221-227
- https://doi.org/10.1177/1082013206065954
Abstract
Experimental determinations were carried out to evaluate the dehydration/impregnation mass transfer rates that take place during osmotic processing of Padrón peppers ( Capsicum annuum L. var. Longum) with sodium chloride solutions. Several sodium chloride concentrations (from 17 to 26.5% w/w) and temperatures (from 25 to 45°C) and contact times (up to 8h) were selected as variables. Solids gain, weight reduction, water loss, normalised moisture content and normalised solids content were calculated at each experimental condition. These data allowed the calculation of water and salt mass transfer coefficients for modelling the corresponding kinetics. Additionally, pepper colour changes during osmotic contact at different experimental conditions were determined. In all cases, solids gain, weight reduction and water loss increased with temperature and salt concentration. Water loss values are low and water loss/salt gain ratio is also low (as it is usual when sodium chloride solutions are employed as osmotic media). In this way, osmotic process can be basically considered as an impregnation process. In all experimental conditions the colour changes were only significant at the highest temperature assayed and also depended on osmotic concentration.Keywords
This publication has 16 references indexed in Scilit:
- Structural and physical properties of dried Anaheim chilli peppers modified by low‐temperature blanchingJournal of the Science of Food and Agriculture, 2003
- Dehydration kinetics of red pepper (Capsicum annuum L var Jaranda)Journal of the Science of Food and Agriculture, 2003
- Processing factors affecting the osmotic dehydration of diced green peppersInternational Journal of Food Science & Technology, 2002
- Osmotic Dehydration Behavior of Red Paprika (Capsicum Annuum L.)Journal of Food Science, 2002
- Recent developments in osmotic dehydration: methods to enhance mass transferTrends in Food Science & Technology, 2002
- Mass transfer coefficients during osmotic dehydration of apple in single and combined aqueous solutions of sugar and saltJournal of Food Engineering, 2001
- EFFECTS OF VARIOUS TREATMENTS ON THE DRYING KINETICS OF Muscatel GRAPESDrying Technology, 2000
- Effect of the centrifugal force on osmotic dehydration of potatoes and applesFood Research International, 1996
- Content and stability of .alpha.-tocopherol in fresh and dehydrated pepper fruits (Capsicum annuum L.)Journal of Agricultural and Food Chemistry, 1979
- OSMOTIC CONCENTRATION OF FRUIT SLICES PRIOR TO FREEZE DEHYDRATIONJournal of Food Processing and Preservation, 1978