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Effect of whey protein concentrate as drying aid and drying parameters on physicochemical and functional properties of spray dried beetroot juice concentrate

Paper ID Volume ID Publish Year Pages File Format Full-Text
19674 43117 2016 7 PDF Available
Title
Effect of whey protein concentrate as drying aid and drying parameters on physicochemical and functional properties of spray dried beetroot juice concentrate
Abstract

Beetroots are good source of functional betalain pigment inherent with antioxidant activity and TPC. The feasibility of spray drying was devised along with the effects of whey protein concentrate (WPC) (5–15%), inlet air temperatures (160–180 °C) and feed flow rate (400–600 ml/h) to produce powder from beetroot juice concentrate (BJC). The total solids content of BJC was adjusted to 25% (w/w) with the addition of WPC. The obtained powders were analyzed for powder yield, moisture content, hygroscopicity, bulk density, a-value (color), antioxidant activity (AOA), TPC, and betalain content. The results revealed that increasing inlet temperature lowered the bulk density, AOA, TPC and betalain content in terms of 0.590 to 0.482 g/ml, 74.75 to 68.85%, 22.23 to 19.36 mg GAE/100 g and 268.54 to 267.45 mg/100 g. Depending on the analysis of the results, inlet air temperature, WPC concentration, and the interaction among them had a significant effect on the studied responses (p<0.0001). Feed flow rate on contrary, showed non-significant effect.

Keywords
Beetroot juice concentrate; Spray drying; Hygroscopicity; TPC; Antioxidant activity; Betalain content
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Effect of whey protein concentrate as drying aid and drying parameters on physicochemical and functional properties of spray dried beetroot juice concentrate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Bioscience - Volume 14, 1 June 2016, Pages 21–27
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