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Mathematical Evaluation of Process Schedules for Aseptic Processing of Low‐Acid Foods Containing Discrete Particulates
Author(s) -
SASTRY SUDHIR K.
Publication year - 1986
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1986.tb13114.x
Subject(s) - particulates , residence time (fluid dynamics) , schedule , heat exchanger , process (computing) , thermal , process engineering , heat transfer , mechanics , environmental science , materials science , chemistry , computer science , mechanical engineering , thermodynamics , engineering , physics , geotechnical engineering , organic chemistry , operating system
ABSTRACT A quantitative methodology was developed for evaluating thermal process schedules for low‐acid foods containing particulates of any shape. The methodology uses finite element analysis to determine temperature distributions within particulate foods subjected to timevarying boundary conditions. Simulations were conducted to study the effects of particle size, residence time distributions within heat exchanger and holding tube, and convective heat transfer coefficients. Results indicate that all these factors have significant effects on the thermal process schedule required to achieve commercial sterility. For large particles, simulations indicate that little credit can be given for lethality within the heating section.