OTIMIZAÇÃO DO SISTEMA CLEAN IN PLACE EM ESTERILIZADORES DE PRODUTOS LÁCTEOS

Abstract

In the clean-in-place (CIP) cleaning process of the Italian "Rossi & Catelli" sterilizers, the entire process is performed by a Programmable Logic Controller (PLC), which reduces the risk of human error. Two cleaning solutions are required, one alkaline and one acid. In the present study, different times, temperatures and concentrations were used for each solution, the same flow was adopted during the flow of the two solutions. For the alkaline product the concentration is 3.5% to 4.0% with a temperature of 85 ° C to 90 ° C for a period of 60 minutes with the flow in the direction in which the product is sterilized and for 30 minutes circulating in the tube located in the Top of the vacuum chamber. For the acid solution the following standards were used: 1.0% to 1.5% concentration with a temperature of 70 ° C to 75 ° C for a period of 50 min with flow in the direction in which the product is sterilized and for 25 minutes circulatin in the tube above the vacuum of tube chamber. During the entire CIP the flow of the equipment was 26,000L h -1 in the Rossi & Catelli 30 and 19,000L h -1 in the Rossi & Catelli 20, being monitored by A promag 33 flow meter. Even with Hazard Analysis and Critical Control Points (HACCP) and Good Manufacturing Practices (GMP) in the industry, ensuring that times, concentrations, temperatures and flows are respected, CIP was inefficient because of the check list executed by the operator together with the person in charge of the sector, where the identified soils are removed manually, causing time waste of time and slots in the equipment caused by the mechanical force used in manual cleaning. In this phaseNeutral detergent and 3M brand cleaning fiber are used to remove dirt that is still adhered to the equipment even after the CIP process. The grooves can facilitate the adhesion of organic matter and microorganisms, and can cause formation of biofilms. The main objective of this work is to evaluate the efficiency of the times, temperatures, flow and concentrations of the alkaline and acid solution used during the CIP system of the Rossi & Catelli 20 and Rossi & Catelli 30 sterilizers, in order to optimize the cleaning process, reducing time of human action after the implementation of the CIP.