Aseptic processing particulate foods

Parrot, D.L. Use of ohmic heating for aseptic processing of food particulates. Food Technol. 1992, 46(12), 68-72. 

Aseptic processing is used to achieve commercial sterility in a continuous flow of liquid or semi-liquid food by heating the food to a suitable temperature before placing it in previously sterilised packaging. The sterilisation of liquids containing particulates presents a number of... 

CHEMOMETRIC APPLICATIONS OF THERMALLY PRODUCED COMPOUNDS AS TIME-TEMPERATURE INTEGRATORS IN ASEPTIC PROCESSING OF PARTICULATE FOODS... 

The chemometric principle was used to derive a guideline for obtaining a simple yes or no answer about the sterility of food particulates heated at aseptic processing temperatures. A quadratic temperature pulse model was used to estimate bacterial destruction from the fractional yield of thermally produced chemical marker compounds (2,3-dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one, M-1, and 4-hydroxy-5-methyl-3(2H)-furanone, M-2) and the rate constants and the activation energies of the chemical and bacterial systems. The model yielded a conservative estimate of lethality at the center of meat-balls heated under different time-temperature conditions. A scheme for determining the minimum marker yield for a designated F -value is provided. 

Kim, H.-J. Taub, I. A. Intrinsic chemical markers for aseptic processing of particulate foods. Food Technol. 1993, 47(1), 91-99. 

Time-Temperature Integrators in Aseptic Processing of Particulate Foods 91 H.-J.KimandY-M. Choi... 

Skudder, P.J. In Aseptic Processing and Packaging of Particulate Foods Willhoft, E.M.A., Ed. Blackie Academic Professional London, 1993 pp. 74-89. 

The purpose of open unidirectional airflow benches is to protect products from particulate contaminants by creating a controlled environment. These benches are used, for example, in electronic, biological, pharmaceutical, and food industries. It should be mentioned that within pharmaceutical production, aseptic sterile processes must be carried out in a Class 100 environment (U.S. Federal Standard 209 E, Airborne Particulate Cleanliness Classes in Cleanrooms and Clean Zones). To avoid particle contamination in the bench, horizontal or vertical airflow with high-efficiency particulate air (HEPA)-filtered air is used. The air velocity is normally 0.4-0.5 ra s". Some examples of typical arrangements of open unidirectional airflow benches are shown in Fig. 10.51. 

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