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 Jensen, J. M. Search for Related Content PubMed Articles by Jensen, J. M.

Cleanability of Milk-Filmed Stainless Steel by Chlorinated-Detergent Solution¹

Department of Food Science, Michigan State University, East Lansing 48823

ABSTRACT

Stainless steel test plates, with and without pretreatment in 100 ppm chlorine, were filmed with cold raw milk and washed by 16 detergents at 0.35% concentration. The detergents ranged from 0.016 to 0.102%, active alkalinity and 0 to 100 ppm available chlorine.

Plates filmed with milk only were cleaned effectively by each nonchlorinated detergent, but high soil build-up, appearing as blue-brown color, accumulated when washed in alkaline solutions containing 25 ppm available chlorine. Less build-up occurred from 50 and 54 ppm chlorine and none from 75 and 100 ppm.

Plates filmed with milk following pretreatment with 100 ppm chlorine accumulated high build-up when washed by alkaline detergent solutions. High build-up occurred as well using alkaline solutions supplemented with 25 ppm, and somewhat less with 50 ppm. None occurred when alkaline solutions contained 75 and 100 ppm chlorine.

Soil build-up was caused by adhesive nonsoluble chloro-protein occurring in low concentration of chlorine ions. When the concentration of chlorine ions increased to 75 and 100 ppm the chloro-protein was solubilized and nonadhesive.

¹ Michigan Agricultural Experiment Station Journal Article no. 4489.