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UHT pilot scale tubular heating unit with inbuilt homogeniser

Identification of Facility
TitleUHT pilot scale tubular heating unit with inbuilt homogeniser
AcronymUHT Versuchsanlage 100L/h-Agroscope Institute of Food Sciences
Key wordsUHT, ultra high temperature, heat treatment, uperisation, homogeniser, tubular heat exchanger, quality
ManufacturerJAG Jakob AG Prozesstechnik, 2555 Brügg
ModelUHT-Versuchsanlage 100 L/h
DescriptionThe UHT pilot scale tubular heating system is designed for practically any type of heat treatment for liquid fibre-less food. Ultra-high-temperature heat treatment in the unit can be carried out either with indirect or direct heating. So both industrial processes can be simulated. Direct heat treatment is also called uperisation and is mainly applied for milk. Pure steam is injected directly into the product to increase temperature instantly up to about 150°C, held for 2 to 4 seconds and then cooled down instantly by evaporation cooling. Direct heat treatment causes little changes to product quality. There is much less cooking flavour than with the widespread indirect heating system, where the product is heated through the wall of the tubular heat exchanger with the heating media hot water or steam on the other side of the wall. Product flow can be regulated and is up to 100 litres per hour. Product is pumped through a tubular heat exchanging system with different sections which can be lengthened or shortened. Inbuilt are two homogeniser heads with adjustable pressure. The first one is set after preheating but before UHT heating, the second one is positioned after the UHT heat treatment to prevent forming of particles. Optional pre-heating at approximately 80°C before the actual UHT treatment helps to stabilise e.g. coffee cream before UHT heating. Final cooling after the heat treatment is carried out with ice water. Filling into sterile containers is carried out in a laminar flow cabinet.
Images
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Weblinkhttp://www.agroscope.admin.ch/publikationen/einzelpublikation/index.html?lang=de&aid=11540&pid=17311&vmode=fancy
Possibilities and limitsLiquids free of macroscopic fibres and up to honey-like viscosity can be processed. Minimal quantity of sample is 20 litres. Inner diameter of the product tube is 6 millimetres. The heating system and the following manual filling operation in a laminar flow cabinet are not completely sterile. About 99% sterility can be achieved (estimation). Storage trials with samples were carried out in the past. The main purpose of the heat treatment unit is to investigate the influence of different heat treatments on product properties such as flavour and physical and chemical product stability. Properties of proteins during heat treatment are of special interest. The two homogeniser heads allow a simulation of the homogenisation applied in industry. The approximate temperature profiles of three different heat treatments are indicated in the figure. Up-to-date protein analytics, chemical, physical, particle, biochemical and microbiological analysis can be carried out in our state of the art accredited laboratories.
CertificationThe experimental dairy plant and the whole institute are certified according to ISO 9001:2008. Certification was confirmed in 2012 and is regularly renewed. Many of our laboratories are accredited according to ISO 17025.

Application
Application fields Mainly milk and cream are treated in the heating unit. Trials with soluble nutrition fibre were carried out. Viscosity upon heating is a critical point to prevent blocking of the tubular system. Ingredients changing viscosity drastically upon heating such as hydrocolloids have to be tested in the laboratory in small scale before a trial in the heating system can be carried out. Other liquid products than milk such as fruit juice or any other food grade liquid can be processed if they comply to the mentioned properties.
Application examples Comparison of indirect and direct UHT heat treatment for milk was carried out and e.g. the change in flavour and the loss in vitamins was investigated with the equipment. The extent of protein denaturation and heat load indicators with different treatments were determined. Influence of the heat treatment and of homogenisation or milk quality on sediment formation could be investigated. Also the influence of the pre-treatment of steam for the uperisation procedure on product properties could be investigated. Comparison of conventional in-container sterilisation with UHT-treatment could be carried out as well.
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Drying of non-fermented meat products
ELECTRO-FREEZING
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… further results

Accessibility & Support Service
Access conditions Accomplishing the requested research as service by the host organization
Access conditions further comments Projects of a volume of at least 50’000 Euro
Languages English, French, German, Italian
Other languages Italien to a limited extent, Swiss German
Training specific training is necessary to use this infrastructure
Training further comments The infrastructure is offered as a service, either just with operators or also with scientific-technological support.
Technical help technical equipment, analytical specific staff is dedicated to this infrastructure, staff is available that can help to use this infrastructure
Technical help further comments We carry out a planned experiment for you with our highly experienced technical staff. We can give you very helpful technical and technological support. Further scientific expertise to plan and evaluate sophisticated experiments to know more about the chemical, biochemical, physical and microbiological influence on selected heat treatment and homogeniser parameters is offered on request.

Costs are about 850 Euro per day including one Operator.warning.pngString representation "We carry out a … g one Operator." is too long.

Contact data
Contact person Martin Anderegg, Walter Bisig
Institute/company Agroscope Institute of Food Sciences
Country Switzerland
Address Schwarzenburgstrasse 161, Liebefeld

UHT-Versuchsanlage 100 L/h UHT pilot scale tubular heating unit with inbuilt homogeniser UHT Versuchsanlage 100L/h-Agroscope Institute of Food Sciences UHT, ultra high temperature, heat treatment, uperisation, homogeniser, tubular heat exchanger, quality

JAG Jakob AG Prozesstechnik, 2555 Brügg UHT-Versuchsanlage 100 L/h The UHT pilot scale tubular heating system is designed for practically any type of heat treatment for liquid fibre-less food. Ultra-high-temperature heat treatment in the unit can be carried out either with indirect or direct heating. So both industrial processes can be simulated. Direct heat treatment is also called uperisation and is mainly applied for milk. Pure steam is injected directly into the product to increase temperature instantly up to about 150°C, held for 2 to 4 seconds and then cooled down instantly by evaporation cooling. Direct heat treatment causes little changes to product quality. There is much less cooking flavour than with the widespread indirect heating system, where the product is heated through the wall of the tubular heat exchanger with the heating media hot water or steam on the other side of the wall. Product flow can be regulated and is up to 100 litres per hour. Product is pumped through a tubular heat exchanging system with different sections which can be lengthened or shortened. Inbuilt are two homogeniser heads with adjustable pressure. The first one is set after preheating but before UHT heating, the second one is positioned after the UHT heat treatment to prevent forming of particles. Optional pre-heating at approximately 80°C before the actual UHT treatment helps to stabilise e.g. coffee cream before UHT heating. Final cooling after the heat treatment is carried out with ice water. Filling into sterile containers is carried out in a laminar flow cabinet. http://www.agroscope.admin.ch/publikationen/einzelpublikation/index.html?lang=de&aid=11540&pid=17311&vmode=fancy Liquids free of macroscopic fibres and up to honey-like viscosity can be processed. Minimal quantity of sample is 20 litres. Inner diameter of the product tube is 6 millimetres. The heating system and the following manual filling operation in a laminar flow cabinet are not completely sterile. About 99% sterility can be achieved (estimation). Storage trials with samples were carried out in the past. The main purpose of the heat treatment unit is to investigate the influence of different heat treatments on product properties such as flavour and physical and chemical product stability. Properties of proteins during heat treatment are of special interest. The two homogeniser heads allow a simulation of the homogenisation applied in industry. The approximate temperature profiles of three different heat treatments are indicated in the figure. Up-to-date protein analytics, chemical, physical, particle, biochemical and microbiological analysis can be carried out in our state of the art accredited laboratories. The experimental dairy plant and the whole institute are certified according to ISO 9001:2008. Certification was confirmed in 2012 and is regularly renewed. Many of our laboratories are accredited according to ISO 17025.

Mainly milk and cream are treated in the heating unit. Trials with soluble nutrition fibre were carried out. Viscosity upon heating is a critical point to prevent blocking of the tubular system. Ingredients changing viscosity drastically upon heating such as hydrocolloids have to be tested in the laboratory in small scale before a trial in the heating system can be carried out. Other liquid products than milk such as fruit juice or any other food grade liquid can be processed if they comply to the mentioned properties. Comparison of indirect and direct UHT heat treatment for milk was carried out and e.g. the change in flavour and the loss in vitamins was investigated with the equipment. The extent of protein denaturation and heat load indicators with different treatments were determined. Influence of the heat treatment and of homogenisation or milk quality on sediment formation could be investigated. Also the influence of the pre-treatment of steam for the uperisation procedure on product properties could be investigated. Comparison of conventional in-container sterilisation with UHT-treatment could be carried out as well. Accomplishing the requested research as service by the host organization Projects of a volume of at least 50’000 Euro English, French, German, Italian Italien to a limited extent, Swiss German specific training is necessary to use this infrastructure The infrastructure is offered as a service, either just with operators or also with scientific-technological support. technical equipment, analytical specific staff is dedicated to this infrastructure, staff is available that can help to use this infrastructure We carry out a planned experiment for you with our highly experienced technical staff. We can give you very helpful technical and technological support. Further scientific expertise to plan and evaluate sophisticated experiments to know more about the chemical, biochemical, physical and microbiological influence on selected heat treatment and homogeniser parameters is offered on request. Costs are about 850 Euro per day including one Operator.warning.pngString representation "We carry out a … g one Operator." is too long.

46.30.62.20




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Created by Kerstin Lienemann on 5 November 2013, at 17:42