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Behaviour of lactose with the presence of lactic acid and Ca as affected by pH

Published online by Cambridge University Press:  02 October 2017

Jayani Chandrapala ,
Claire Gauthier  and
Todor Vasiljevic
Jayani Chandrapala*
Affiliation:
Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, Werribee campus, VIC 3030, Australia School of Science, RMIT University, Bundoora, Victoria 3083, Australia
Claire Gauthier
Affiliation:
Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, Werribee campus, VIC 3030, Australia
Todor Vasiljevic
Affiliation:
Advanced Food Systems Research Unit, College of Health and Biomedicine, Victoria University, Werribee campus, VIC 3030, Australia
*
*For correspondence; e-mail: Jayani.Chandrapala@rmit.edu.au
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Abstract

Contradictory statements about the effects of pH change on crystallisation behaviour of lactose exist in the literature. Considering the importance of addressing the processability issue of acid whey, a systematic study is required to establish lactose crystallisation behaviour in the presence of LA and Ca at concentrations present in real acid whey waste streams emphasising impact of pH. Structural modifications of lactose were evident at elevated, more neutral pH in the presence of 1% w/w LA and 0·12% w/w Ca. These structural changes led to changes in the anomeric equilibrium of lactose, which manipulated the water–lactose behaviour and increased the crystallinity. Therefore, altering pH to 6·5 may be the solution to proper industrial processing of acid whey, enhancing the ability of lactose to crystallise properly.

Keywords

LactosepHacid whey
Type
Research Article
Information
Journal of Dairy Research , Volume 84 , Issue 4 , November 2017 , pp. 484 - 487
Copyright
Copyright © Hannah Research Foundation 2017 

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References

Bhargava, A & Jelen, P 1996 Lactose solubility and crystal growth as affected by mineral impurities. Journal of Food Science 61 180–184 Google Scholar
Chandrapala, J, Wijayasinghe, R & Vasiljevic, T 2016 Lactose crystallization as affected by the presence of lactic acid and calcium in model lactose system. Journal of Food Engineering 178 181–189 CrossRefGoogle Scholar
de Wit, JN 2001 Lecturer's Handbook on Whey and Whey Products. Belgium: European Whey Products Association Google Scholar
Fischer, C & Kleinschmidt, T 2015 Synthesis of galacto-oligosaccharides using sweet and acid whey as a substrate. International Dairy Journal 51 15–22 Google Scholar
Hartel, RW & Shastry, AV 1991 Sugar crystallization in food products. Critical Reviews in Food Science and Nutrition 30 49–112 Google Scholar
Herrington, BL 1934 Some physico-chemical properties of lactose: the influence of salts and acids upon the mutarotation velocity of lactose. Journal of Dairy Science 17 659–670 Google Scholar
Jelen, P & Coulter, ST 1973 Effects of certain salts and other whey substances on the growth of lactose crystals. Journal of Food Science 368 1186–1189 Google Scholar
Mullin, JW 1979 Crystal growth in pure and impure systems. In Industrial Crystallization, pp. 93–103 (Eds Jancic, SJ & de Jong, EJ). New York: North-Holland Publishing Co.Google Scholar
Nikanishi, K 1962 Infrared Absorption Spectroscopy. San Francisco: Holden –Day Inc. Google Scholar
Pamula, E, Blazewicz, M, Paluszkiewicz, C & Dobrzynski, P 2001 FTIR study of degradation products of aliphatic polyesters-carbon fibre composites. Journal of Molecular Structure 556 69–75 CrossRefGoogle Scholar
Raut, DM, Allada, R, Pavan, KV, Deshpande, G, Patil, D, Patil, A, Deshmukh, A, Sakharkar, DM, Bodkel, PS & Mahajan, DT 2011 Dehydration of lactose monohydrate: analytical and physical characterization. Der Pharmacia Lettre 3 202–212 Google Scholar
Reid, SD & Fennema, RO 2008 Water and ice. In Fennema's Food Chemistry, 4th edition, pp. 17–83 (Eds Damodaran, S, Parkin, LK & Fennema, RO). USA: Taylor & Francis group, LLC Google Scholar
Smart, JB 1988 Effect of whey components on the rate of crystallisation and solubility of alpha lactose monohydrate. New Zealand Journal of Dairy Science and Technology 23 275–289 Google Scholar
Von Hippel, PH & Schleich, T 1969 The effects of neutral salts on the structure and conformational stability of macromolecules in solution. Structure and Stability of Biological Macromolecule 2 417–574 Google Scholar
Wijayasinghe, R, Vasiljevic, T & Chandrapala, J 2015 Water-lactose behaviour as a function of concentration and presence of lactic acid in lactose model system. Journal of Dairy Science 98 8505–8514 Google Scholar