effect of homogenisation pressure and some hydrocolloids on:均质压力和一些亲水胶体的影响精品.pdfVIP

effect of homogenisation pressure and some hydrocolloids on:均质压力和一些亲水胶体的影响精品.pdf

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effect of homogenisation pressure and some hydrocolloids on:均质压力和一些亲水胶体的影响精品

POLISH JOURNAL OF FOOD AND NUTRITION SCIENCES Pol. J. Food Nutr. Sci. 2005, Vol. 14/55, No 3, pp. 293–298 EFFECT OF HOMOGENISATION PRESSURE AND SOME HYDROCOLLOIDS ON BEVERAGE EMULSION STABILITY El¿bieta D³u¿ewska, Krzysztof Leszczyñski Department of Food Technology, Agricultural University, Warsaw Keywords: beverage emulsions, pressure homogenisation, stability, arabic gum, modified starch The aim of the study was to determine the effect of homogenisation parameters, arabic gum and modified starch additives on the stability of beverage emulsions. Optimal parameters for homogenisation process were determined on the basis of the characteristics of particle size of dis- persed phase vs. homogenisation pressure and on the basis of results of emulsion stability measurement. The best among the analysed variants of homogenisation of emulsions with arabic gum appeared to be the application of the pressure range of 45–55 MPa in the first stage followed by the pressure reduction at the second stage to 1/3 of that from the first stage. The analysis of the size distribution of oil particles in the emulsions stabilized by means of arabic gum or modified starch which were homogenised under the same pressure points to the need of a proper selection of homogenisation parameters in respect of the kind of stabilisers. INTRODUCTION The emulsions should demonstrate a high degree of sta- bility in both the concentrated and ready-to-serve forms of The properties of a food emulsion that contribute most beverage [Tan Holmes, 1988]. H

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