Дослідження впливу виду пакування на термін придатності питного пастеризованого молока

Abstract

Українська мова В статті проведено аналіз основних чинників, які впливають на процес погіршення якості питного пастеризованого молока. Визначено правильність маркування, органолептичні та фізико-хімічні показники промислових зразків питного пастеризованого молока у пакуванні Pure-Pak Sense, ПЕТ пляшці та плівковій упаковці. У ході роботи досліджено вплив пакування на термін придатності молока після порушення цілісності пакування при різних температурах зберігання. В результаті визначено, що молоко у плівковій упаковці більш стійке до скисання. Англійська мова Abstract – The article analyzes the main factors influencing the deterioration of drinking pasteurized milk. All foods consist of primary biomaterials, which over time inevitably decompose and spoil. Deterioration of quality and spoilage of food cannot be prevented, but can slow down the process of deterioration by proper selection of recipes, methods of processing, packaging, storage and transportation of food. The shelf life of pasteurized milk while maintaining the integrity of the package and a constant storage temperature is determined by the type of packaging – packaging made of combined polymeric materials is more effective than polyethylene film. The aim of the study was to investigate the effect of the type of packaging on the shelf life of drinking pasteurized milk after violation of the integrity of the package at different storage temperatures. As objects of research in the work were selected 5 samples of drinking pasteurized milk – TM «Yagotynske» and TM «Farm» with a fat content of 2.5 – 2.6%, which differed in the type of packaging: Pure-Pak Sense, PET bottle and film packing from the combined polymeric materials. All milk samples, except for TM «Yagotynske» in Pure-Pak Sense packaging, are made according to DSTU 2661:2010 «Drinking cow's milk. General technical conditions». Caloric content and nutritional value of the studied samples of drinking milk are almost the same. The labeling of the tested samples of pasteurized drinking milk was performed correctly. When determining the organoleptic and physicochemical characteristics of industrial milk samples, it was determined that the tested samples of pasteurized drinking milk meet the requirements of DSTU 2661:2010 «Drinking cow's milk. General technical requirements». As a result of determining the effect of packaging on the shelf life of milk after opening at room temperature, it was found that at T = 23°C milk samples in the packaging of Pure-Pak Sense and PET bottle are fermented after 2 h 36 min. The sample of milk in a film package is fermented after 2 hours and 45 minutes. When determining the effect of packaging on the shelf life of milk after opening at low temperature (T = 4°C), it was determined that the fermentation of milk in film packaging occurs in the following sequence: PET bottle (4 days); Pure-Pak Sense (8 days); film packing (13 days).