Determinación de la vida de estante de alimentos en refrigeradores bioactivos® y no frost®

Abstract

This study was realized in two different refrigerators one of them with natural flow convection and another one no frost. The objective was determined through shelf life equations which of them is the best in food conservation to low temperature. To do this study was necessary to calibrate the refrigerators in three different temperature ranges. Furthermore food selection was based on local consumption and shelf life of each food in ideal conditions. Later on was got shelf life equation with kinetic analysis based on spoilage, to do this were taken data from five physic chemical parameter by 15 days on each temperature range. Was observed that the refrigerator with natural flow convection had a relative humidity more than 85% in a temperature between 0ºC to 5ºC, these conditions gave us a friendly conservation atmosphere by 10 to 12 days. Comparing this with model no-frost which gave us 7 to 9 days with 60% of relative humidity in the same temperature. All this based on three kinetic equation obtained from: papaya, tomato, lettuce. Moreover could evidence to the dehydration is the main spoilage cause. So was proposed do another study with air flow and humidity besides temperature.