HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Leeder, J. G. Articles by Martin, R. V. Search for Related Content PubMed Articles by Leeder, J. G. Articles by Martin, R. V.

Effects of the Hydrotron on Milk and Milkstone Formation¹

New Jersey Agricultural Experiment Station

ABSTRACT

Formation of milkstone on milk heating equipment is the cause of one of the most important problems with which the milk plant operator must cope, namely, the cleaning of heating equipment. Milkstone is a complex heterogeneous mixture of organic and inorganic substances that adhere tenaciously to milk heating surfaces. Use of high temperature-short time (HTST) pasteurizing equipment has increased greatly the milkstone problem, because in these units large volumes of milk are heated to high temperatures in relatively confined spaces.

Milkstone should be removed from milk heating surfaces for several reasons: (a) It acts as an insulator when deposited in several layers, thus greatly reducing heat transfer, (b) it is the most common cause of high thermoduric counts in pasteurized milk, (c) it can serve as a source of off-flavors and odors, (d) it is unsightly, (e) when allowed to accumulate, it is difficult to remove.

Milkstone is similar to boiler scale. Both are formed as a result of heat treatment and are composed primarily of minerals precipitated from solution by heat.

¹ Paper of the Journal Series, New Jersey Agricultural Experiment Station, Rutgers Univ., The State University of New Jersey, Department of Dairy Ind.

² Present address: U. S. Army.