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My Tetra Pak
  • Solutions

    Tetra Pak end-to-end solutions

    Solution

    • Yoghurt blueberries in bowl

      Processing

      Processing solutions and equipment for dairy, cheese, ice cream, beverages and prepared food.

    • three carton packages

      Packaging

      A complete carton packaging range for consuming fresh products, offering user convenience, easy opening and optimal shelf life.

    • women wearing hololens services

      Services

      Tetra Pak® Services helps you improve your performance, optimize costs and ensure food safety throughout the lifecycle of your operation

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    • TECHNOLOGY AREAS

      • Blending
      • Buffering
      • Carbonization
      • Cleaning-in-Place
      • Dosing
      • Evaporation
      • Extraction
      • Heat Exchangers
      • Homogenization
      • Membrane filtration
      • ​​​​​​​​​​​​​​​​​​​​​​​​Mixing
      • Pasteurization
      • Powder handling
      • Selected Plant Components
      • Separation
      • Spray drying
      • Standardization
      • Sugar dissolving
      • Sugar treatment
      • UHT treatment
    • CHEESE EQUIPMENT

      • Block forming
      • Curd making
      • ​​​​​​​​​​​​​​​​​​​​​​​​​Draining, Cheddaring & Mellowing
      • Draining, Forming & Mould filling
      • Draining, washing & blending
      • Liquid filled cheese
      • Whey handling
      • Cooking and stretching
      • Brining
      • ​​​​​​​​​​​​​​​Pressing
      • Curd blending and buffering
    • ICE CREAM EQUIPMENT

      • Extrusion
      • Filling
      • Freezing
      • Handling
      • Inclusion
      • Hardening
      • Moulding
      • Mix preparation
      • Wrapping
      • Secondary packaging
Home Solutions Processing Equipment UHT treatment
Tetra Pak® Indirect UHT unit DE

UHT TECHNOLOGY

Used for the sterilization of low acid foods, UHT treatment involves heating the product to over 135 °C. It destroys all microorganisms, making the end product suitable for ambient distribution.

UHT treatment for food and dairy products​

UHT treatment requires both a sterilizer and an aseptic unit (for packaging the product). It is used for low acid (above pH 4.6) products such as UHT milk, UHT flavoured milk, UHT creams, soya milk and other dairy alternatives. The same process is also used to sterilize prepared food, such as soups, sauces, desserts, tomato and fruit preparations, and baby food.

The birth of high heat treatment and canning as a means of preserving food began in France in the early 1800s. By 1839, tin-coated steel containers were widely in use. In the 1960s, building on this early food conservation technology, Tetra Pak pioneered its own continuous UHT process and aseptic packaging systems, and so kick-started the growth of the UHT milk segment.

In UHT treatment, the goal is to maximise the destruction of microorganisms while minimising the chemical changes in the product. That means finding the optimal combination of temperature and processing time for different types of food.

Tetra Pak offers two alternative methods of UHT treatment: direct or indirect. In direct UHT heating, steam is briefly injected into the product, and this is rapidly followed by flash cooling. The brevity of the treatment makes it possible to achieve very high product quality.

However, the process requires relatively high energy consumption compared to indirect UHT treatment. With indirect heating, the product does not come into direct contact with the heat source, but is instead heated using heat exchangers. What makes this method so cost-effective is that most of the heat energy can be recovered.

​

EQUIPMENT FOR UHT TREATMENT

Tetra Pak Indirect UHT unit DE

Tetra Pak® Indirect UHT unit DE for dairy products

Tetra Pak Indirect UHT unit is a processing unit for highly efficient, continuous ultra-high temperature treatment of dairy products.

Tetra Pak Indirect UHT unit DE⁠
Tetra Pak Indirect UHT unit DC

Tetra Pak® Indirect UHT unit DC for dairy products

Ultra-high temperature treatment of dairy products. The unit is of aseptic design, and a tubular heat exchanger is used for indirect heating

Tetra Pak Indirect UHT unit DC⁠
Tetra Therm Aseptic VTIS

Tetra Therm Aseptic VTIS direct UHT processing

Tetra Therm Aseptic VTIS, a state-of-the-art direct UHT processing of premium quality, aseptic products from white milk to viscous ice cream.

Tetra Therm Aseptic VTIS⁠
Tetra Pak Indirect UHT unit PFF with tubular heat exchanger

Tetra Pak Indirect UHT unit PFF with tubular heat exchanger

A processing unit for highly efficient, continuous ultra-high temperature treatment of prepared food products.

Tetra Pak Indirect UHT unit PFF with tubular heat exchanger⁠
Tetra Pak Indirect UHT unit PFF with scraped surface heat exchanger

Tetra Pak Indirect UHT unit PFF with scraped surface heat exchanger

Gentle indirect UHT treatment unit with scraped surface heat exchanger for viscous products, with or without particles, that keeps sensitive product in motion

Tetra Pak Indirect UHT unit PFF with scraped surface heat exchanger⁠
Tetra Pak Indirect UHT unit PFF with coiled heat exchanger

Tetra Pak Indirect UHT unit PFF with coiled heat exchanger

Continuous, gentle indirect UHT treatment unit with coiled heat exchanger for high viscous products, with or without particles

Tetra Pak Indirect UHT unit PFF with coiled heat exchanger⁠

Related links

Heating solutions Aseptic packaging solutions

Documents

The right UHT processing for every dairy product (pdf) An introduction to commercial sterility (pdf)
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