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UHT Technology & Aseptic Processing

This course provides a structured, end‑to‑end overview of UHT processing and aseptic technology, starting with the fundamentals of aseptic processing and sterility theory and then linking those principles to practical system selection and operation. The content covers the main UHT technology pathways—indirect UHT (tubular, plate, and SSHE) and direct UHT (steam injection and steam infusion)—with discussion focused on how each approach fits different processing objectives and product needs. 

Building on the technology foundation, this lecture includes a dedicated segment on homogenization in a UHT context, including upstream and downstream homogenizing, and highlights key aseptic components and supporting equipment. The later portion expands into applications and operating experience, addressing energy consumption and optimization/heat recovery, and then moves into microbiology and shelf‑life drivers, including sterility, stability, enzymatic activity, and the use of process metrics such as F₀‑value, B*, and C*. The lecture closes with practical, plant‑focused topics such as run time, fouling and monitoring, plus application examples.

09:00–09:30
Welcome & Introduction
• Opening remarks and presentation by SPX FLOW

Session 1 – Aseptic & Sterility Theory (Part 1)

09:30–10:25
UHT Technology Overview – Indirect Systems
• Tubular UHT
• Plate UHT
• Scraped Surface Heat Exchangers (SSHE)

10:25–10:35
Break

Session 2 – Aseptic & Sterility Theory (Part 2)

10:35–11:30
UHT Technology Overview – Direct Systems
• Steam Injection
• Steam Infusion
• Q&A (5–10 minutes)

11:30–12:30
Lunch

Session 3 – Homogenization in UHT Processing

12:30–14:00
Homogenizers: Theory & Applications (UHT Perspective)
• Aseptic homogenizers
• Pulsation dampeners

14:00–14:15
Break

Session 4 – Microbiology & Shelf Life

14:15–17:30
Microbiology in UHT & Aseptic Processing
• Commercial sterility
• Shelf-life considerations
– Sterility
– Physical stability
– Enzymatic activity
• Thermal process evaluation
– F₀-value
– B*
– C*

Flat Rate $650

May 19, 2026, in person 
Ithaca Cornell University campus

Louise Felker
Louise Felker

Extension Support Specialist

Dairy Foods Extension

Louise Felker