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Milk Processing Essentials: Pasteurization, ESL, and UHT
Discover the science and engineering behind modern milk preservation. This technical guide explains pasteurization, extended shelf-life (ESL) processing, UHT sterilization, high-pressure processing (HPP), evaporated and sweetened condensed milk, target microorganisms, process validation, equipment, packaging, and regulatory requirements. Includes practical engineering examples and AdvThermaLogic calculations for thermal process evaluation and optimization.


AI in Food Safety: Useful Tool, Not an Authority
Ask any chatbot what F-value your low-acid canned product needs. You will get F₀ = 3 min. Literature-based, generally correct. As a process specification, meaningless — an F-value belongs to a specific product, container, cold spot, and validated heat-penetration study. A food process engineer's view on where AI earns its keep in food safety, where it must never make the final call, and where it will deliver the biggest gains next.


Hot-Fill Hold Processing in Foods: A Practical, Engineering Guide
Hot-fill–hold (HFH) is a practical thermal processing and packaging method for acid and acidified foods (fruit preps, sauces, salsas, dressings, beverages). It combines validated product heating with controlled hot filling and a defined hold endpoint to treat the closure/headspace surfaces. This guide explains the pH ≤ 4.6 boundary, critical factors (equilibrium pH, fill/hold/end-of-hold temperature), packaging-specific solutions, common failures, and validation.

George N. Stoforos, Ph.D.
Jan 1, 2026


A Technical Guide: Hold Tube Design
The holding tube is the core of continuous thermal processing, ensuring food safety by delivering the required lethality (F-value). Proper design, regulatory compliance, flow calculations, and validation guarantee that every product particle receives safe treatment while maintaining efficiency and meeting global food safety standards.

George N. Stoforos, Ph.D.
Sep 11, 2025


Food Preservatives: Truths & Myths
This blog describes the use of food preservatives, their attributes, and the truths and myths about their use in our foods.

George N. Stoforos, Ph.D.
Jan 1, 2025


Computational Fluid Dynamics in Food Processing
Computational Fluid Dynamics is an excellent tool in the food industry. It allows food engineers to better design processes and equipment.

Stelios Chatzidakis
Jul 1, 2024


Ball’s Formula Method for Thermal Processing of Canned Foods
Ball's formula method for thermal processing: The basic principles of microbial destruction and their integration into the time temperature

Nikolaos G. Stoforos
Dec 30, 2023


How to Process a Food Product? It depends…
This article provides an overview of the factors that influence the decision on how to process (method, technology, etc...) a food product.

George N. Stoforos, Ph.D.
Jun 13, 2023


The misuse of the word Pasteurization
This article provides an overview of the definition and application of pasteurization and the other heating methods used in food processing.

George N. Stoforos, Ph.D.
Jan 15, 2023
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