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Dehydration of red bell-pepper (Capsicum annuum L.): Change in drying behavior, colour and antioxidant content

Paper ID Volume ID Publish Year Pages File Format Full-Text
19401 43062 2011 10 PDF Available
Title
Dehydration of red bell-pepper (Capsicum annuum L.): Change in drying behavior, colour and antioxidant content
Abstract

The sun, oven (50 and 70 °C) and microwave oven (210 and 700 W) drying behaviors of red bell-pepper slices were investigated. Effects of these drying methods in terms of colour indices and antioxidant activity of pepper slices were also studied. “Midilli and Küçük” model exhibited high coefficient of determination (R2) values for all the drying methods used in the assay, ranging between 0.994–0.999, while “Page” and “Modified Page” models fit better for oven drying at 70 °C. The calculated effective diffusivity (Deff) values (m2/s) of pepper slices for the drying processes ranged between 0.31 and 87.39 × 10−9. Sun dried and followed by microwave oven (700 W) dried samples revealed the highest L*, a* and b* colour values than the other dried samples. Microwave oven dried (210 W) and oven dried (50 °C) samples exhibited the lowest TEAC and DPPH radical scavenging activities among the dried samples.

Research highlights▶ Page and modified Page models fit well for the oven drying of red bell-pepper. ▶ Sun and microwave oven drying led to higher L*, a*, b* values than oven drying. ▶ The antioxidant activity of dried red bell-pepper is higher than the fresh crop.

Keywords
Drying; Red bell-pepper; Colour; Antioxidant properties
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Dehydration of red bell-pepper (Capsicum annuum L.): Change in drying behavior, colour and antioxidant content
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 89, Issue 4, October 2011, Pages 504–513
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us