Kailash S. Purohit, PhD Phone 1 (847) 296 9312 Message 1 (847) 922 6682 kaipurohit@processtek.net |
Reliability Considerations in Steam-Air Processing 29th Annual Conference, IFTPS March 4, 2010, San Antonio, Texas A perspective of salient process parameters involved in Steam-Air Processing will be presented, along with a summary of prior art and practice of the factors affecting SA Process Efficacy. The effects of Steam Content and Mechanical Heating Media Re-Circulation on Temperature and Heat Distributions prevailing during Steam-Air Processing will be discussed, along with the effects of Package Shape, Rack and Manifold Designs. Illustrative examples and data of the use of representative Heating Rate Transducers and Heat Flux Sensors, as pragmatic tools in assessing the Heating Rate Uniformity or Reproducibility of SA Retorts, as well as the Slowest Heating Retort locations to be used for Process Development by Heat Penetration Studies, will be presented and discussed. Alternative or recommended approaches that may be of potential use, to assess the reliability of Steam-Air Processing Retorts, including the use of appropriately designed and calibrated Biological and Thermo-Chemical Integrators of Lethality will also be briefly presented. Safety Factors that may beneficially be used in Process Design and Establishment for reliable Steam-Air Processing will be very briefly discussed. Finally, lessons learned and points to consider in SA Processing will be shared, to aid Process Design Engineers with a better understanding of critical Steam-Air Retort intangibles, with an aim to enhancing reproducibility, reliability and robustness of Steam-Air Processing of Retorting Products in Flexible and Semi-Rigid Plastic Containers. |
Challenges Facing a Process Specialist in Implementing Alternate or Non-Thermal Processes 26th Annual Conference, IFTPS February 21, 2007, San Antonio, Texas Investigations utilizing Alternate and/or Non-Thermal Processes for manufacture of safe, shelf-stable LACFs are proceeding rapidly, and it is only a matter of time before these emerging or novel technologies will reach the “reduction to practice” stage in our industry. 21 CFR Part 113 will in all probability, albeit indirectly, play a significant role in guiding these “new” technologies towards implementation. Validations & Approvals” for Non-Thermal Processes, from the perspective of established and accepted Thermal Processing principles and practices. Special Emphasis and Historical Case studies from Canning will be used in an attempt to provide a sound Basis for the Design Criteria, Surrogate Challenge Organisms, Inactivation Kinetics Models and Validation Approaches for the newer Alternate or Non-Thermal Processes. A systems approach to evaluating and implementing upcoming alternate or non-thermal processes will be shared, grounded in the lessons learned and the accumulated experiences from the thermal processing industry, with the overriding aim of making new and alternate processes reliable, reproducible and robust for manufacture of safe and functional shelf stable LACFs. |