Multistage heat pump drying of macadamia nut under modified atmosphere was studied to improve the drying process and quality of the nuts. Conditions of study included drying temperature of 40-60°C, using nitrogen and normal air as drying medium. Drying kinetics and quality of nuts (moisture content, aw, rancidity and colour) as well as energy consumption of all drying processes were examined. T...

Ionizing irradiation is a phytosanitary treatment that is increasing in application. The effect of low-oxygen, modified atmosphere storage on irradiation efficacy has not been addressed until recently. Hypoxia for 18 hours before irradiation until a couple of hours after irradiation reduced efficacy to varying degrees as measured by adult development or reproduction for four insects studied. It...

The modern food processing industry began in 1810 when Nicolas Appert invented the canning process. This was followed by the invention of a mechanical ammonia refrigeration system in 1875. In the 1860s Louis Pasteur had discovered the connection between the micro-organism and food spoilage, this put the development of food processing and preservation techniques on a firm scientific foundation. ...

Respiration rate and gas exchange through the package material are the processes involved in creating a modified atmosphere inside a package that will extend shelf life of fresh fruits and vegetables. Thus, modelling respiration rate of the selected produce is crucial to the design of a successful modified atmosphere packaging (MAP) system. In this paper, general aspects of the respiration proc...

abstract sour cherry (prunus cerasus l.) is an important iranian-native fruit, considered highly perishable commodity which cannot be stored for any length of time. on this study, effect of three gas compositions (ambient, 5% o2+5% co2+90% n2 and 10% o2+15% co2+75% n2) and two storage temperatures (0 and 5 °c) on two sour cherry cultivars namely erdy jubileum and erdy botermo was studied in a c...

Sushi, a very popular food worldwide became a popular ready-to-eat food selling in supermarkets, but it exhibit distinct features, which are associated with microbiological hazards. Therefore, MAP technology, known to reduce aerobic bacteria in fishery products, was used to improve quality of ready-to-eat salmon sushi in this study. Salmon sushi were packaged with air (control), 50%N2 /50%CO2 (...