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Title: Effect of freezing on quality of osmotically dehydrated banana slices
Authors: Jariyawaranugoon, U. 
Keywords: Banana;Drying;Freezing;Osmotic dehydration;Pretreatment
Issue Date: 2015
Publisher: Scopus
University of the Thai Chamber of Commerce
Source: U. Jariyawaranugoon (2015) Effect of freezing on quality of osmotically dehydrated banana slices. Advance Journal of Food Science and Technology Vol.9 No.2, 98-105.
Abstract: The objective of this study was to evaluate the effect of Fast Freezing (FF) and Slow Freezing (SF) pretreatment on the osmotic dehydration of banana. An untreated sample (UT) was used as a control. Freezing pretreated samples (FF and SF) showed a high moisture loss after 3 h soaking time, which was lowered than the untreated sample (4 h soaking time). The variation of drying time at 70°C from 4 to 6 h was studied. The physicochemical (moisture content, pH, titratable acidity, hardness, total sugar, ascorbic acid, color) and sensory properties of fast freezing, slow freezing and untreated sample were determined. The drying process significantly (p<0.05) lowered moisture content and ascorbic acid of bananas, as well as increased in hardness and total sugar. The pH and titratable acidity were no significant differences (p>0.05) among all samples at any drying time. Anincrease in the L* value of all samples was evident with increasing drying time, while slow freezing sample had the highest b* value (p<0.05). The sensory results revealed that freezing pretreated banana slices were acceptable equally to the untreated sample. The longer drying time caused slightly decreased (p<0.05) in scores of sweetness and overall acceptability of both freezing pretreated banana slices.
Rights: This work is protected by copyright. Reproduction or distribution of the work in any format is prohibited without written permission of the copyright owner.
Appears in Collections:RSO: Journal Articles

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