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The effect of the salt content on the crystallization behaviour and sorption fingerprints of spray-dried lactose

Paper ID Volume ID Publish Year Pages File Format Full-Text
19357 43061 2008 8 PDF Available
Title
The effect of the salt content on the crystallization behaviour and sorption fingerprints of spray-dried lactose
Abstract

Different types of salts in various proportions affect lactose crystallization. In this study, two common monovalent salts, NaCl and KCl, were used at lactose:salt ratios of 5:2 and 5:1 (w/w) to observe the change in crystallization behaviour of the mixtures compared with that of pure lactose obtained from spray drying. The same operating conditions (170 °C inlet air temperature, 38 m3/h main air flow rate, feed pump rate 11 ml/min, nozzle air flow rate of 473 L/h) were maintained for each run in a Buchi (B-290) Mini Spray Dryer to compare the behaviour of different feed compositions. To analyse the crystallization behaviour of each spray-dried product, Moisture Sorption Characteristic diagrams and Moisture Sorption Finger-prints were used, and Scanning Electron Microscopy (SEM) micrographs of the samples have also been carried out. The results show that, at lower salt contents (lactose:salt = 5:1), both lactose/salt mixtures showed the highest change in moisture content, but there was significant difference in sorption behaviour at higher salt contents for both salts. Among all the lactose/salt powders, the lactose:NaCl mixture at a ratio of 5:2 was found to be the most crystalline product in nature.

Keywords
Crystallization; Sorption finger-prints; Sorption characteristics; Salts
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The effect of the salt content on the crystallization behaviour and sorption fingerprints of spray-dried lactose
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food and Bioproducts Processing - Volume 86, Issue 4, December 2008, Pages 304–311
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