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Far infrared assisted refractance window drying of apple slices: Comparative study on flavour, nutrient retention and drying characteristics.

Deependra, Rajoriya and Sandhya, R. Shewale and Bhavya, M. L. and Umesh Hebbar, H. (2020) Far infrared assisted refractance window drying of apple slices: Comparative study on flavour, nutrient retention and drying characteristics. Innovative Food Science & Emerging Technologies, 66. p. 102530. ISSN 1466-8564

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Abstract

In the present investigation, far infrared (FIR) assisted refractance window (RW) drying (FIR+RW) of apple slices (2 and 5 mm) was evaluated in comparison with RW and hot air (HA). FIR+RW reduced drying time by 50 and 69% compared to RW and HA, respectively. Also, FIR+RW drying retained a significantly higher amount of phenolics, flavonoids, ascorbic acid, and antioxidant activity, as compared to HA. Increase in FIR temperature from 50 to 60 °C reduced drying time by 10–19% without having any deleterious effect on quality. Colour, flavour, and microstructure of FIR+RW dried slices were comparable to that of RW. Nearly 46% saving in energy consumption was observed for FIR+RW drying compared to HA. Results suggested that FIR+RW drying can be explored as a potential technique for drying of fruits in a shorter time, with better retention of flavour, nutrients and also enhance energy efficiency.

Item Type: Article
Uncontrolled Keywords: antioxidant activity; energy; microstructure; phenolics; principal component analysis; refractance window
Subjects: 600 Technology > 08 Food technology > 24 Fruits > 01 Apple
600 Technology > 08 Food technology > 06 Preservation and Storage > 02 Drying and Dehydration
Divisions: Food Engineering
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 04 Dec 2020 06:20
Last Modified: 04 Dec 2020 06:20
URI: http://ir.cftri.res.in/id/eprint/14691

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