Targeted control of product properties for fast and improved solubility of protein powders
Proteins are a common ingredient in powder mixes for sports drinks and other protein drinks. Isolating them from complex animal or vegetable sources and then preserving them by drying in a spray tower produces a fine powder with low solubility. Dry your solution in one step to perfectly soluble agglomerates with our fluidized bed technology.
protein product, spray dried by Glatt fluid bed technology, REM
protein product, spray dried in a spray tower, REM
Several processes in one step for improved solubility of proteins
The combination of our processes such as spray granulation and spray agglomeration in just one fluidized bed apparatus offers maximum flexibility for influencing product properties. In the first zone of the apparatus, liquid droplets dry to form powder particles, similar to the drying process in the spray tower. This initial layer is built up into granules in the other zones by spraying. Spray droplets hit the particles several times and spread across the surface. The moisture in these droplets does not evaporate abruptly, but only on the particle surface and thus layer by layer. As fine particles are always incorporated at the same time, a more compact but still porous structure is created compared to the drying process in the spray tower, as can be seen in the electron micrographs. The higher bulk density of the spray granules improves sinking into water, for example, but there are sufficient pores to ensure rapid disintegration of the agglomerates. By setting different process parameters in the individual zones of the apparatus, it is possible to control product properties such as solubility in a targeted manner.
The clear advantages of fluidized bed technology compared to the drying process of protein powder in the spray tower
- Faster and improved solubility of proteins compared to powders from the spray tower
- Targeted adjustment of the particle size, reduced dust content, improved flowability
- Gentle processing and safe process due to lower temperatures and reduced risk of explosion
- Smaller footprint and smaller plant with the same throughput
Compared to a spray dryer, a Glatt fluidized bed system GFG is basically:
- much more flexible, different processes are possible
- smaller footprint – smaller building
- lower overall height – lower building
- less rquipment – less maintenance
- processing of temperature-sensitive products
Other important points of GFG fluid bed systems compared to spray dryers:
- investment costs are lower or in a similar range
- energy consumption in a similar range
Compared to (spray-dried) powder, granulates from the fluidized bed have:
- much better solubility
- no dust
- good free flowing properties
- an easy dosing behavior
- decreased hygroscopicity
- decreased hndling hazards
Watch the video on Excellent solubility of collagen hydrolysate!
Powders of the same raw material in comparison, produced once by means of spray agglomeration + spray granulation in a continuously operating multi-chamber fluidized bed system from Glatt and once by means of spray drying in a conventional spray tower.
Link to: Drying liquids – Selecting the best technology for nutraceuticals 
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Link to: Drying liquids – Selecting the best technology for nutraceuticals
Copyright: HPCi Media Limited
Link to: Drying liquids – Selecting the best technology for nutraceuticals
Glatt technical article: ‘Drying liquids – Selecting the best technology for nutraceuticals’
The desired end product properties can make a difference when choosing between spray drying or spray granulation
Both spray drying and fluid bed spray granulation can be used to convert liquid products into bulk materials. The most effective process will often be dictated by the desired properties of the final particles and the specific application. Glatt Ingenieurtechnik has a thorough understanding of both techniques and has a long history of designing fluid bed systems that are tailored to individual customer products.
- Author: Gudrun Ding, Head of Business Development Process Technology, Glatt Ingenieurtechnik GmbH, Weimar, Germany
- originally published in the magazine ‘Nutraceutical Business Review’, issue 05/2022, HPCi Media Limited
Compact, dust-free and free flowing granules from liquids by spray granulation
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Fluffy, porous, excellently soluble and well flowing granules from powder by spray agglomeration
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Glatt Continuous Granulation
and Coating
in a Fluidized Bed
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Further information on this topic and related topics can also be found in the following publications:
Link to: New fluid bed options for solvent-based processes and products requiring Kosher and Halal conditions
Copyright: Glatt
September 2021: New fluid bed options for solvent-based processes and products
Link to: Spray (micro)encapsulation of sensitive substances in matrix form – An overview of essential oil and vitamin case studies
Copyright: Innovations in Food Technology
Published article: ‘Spray (micro)encapsulation of sensitive substances in matrix form – An overview of essential oil and vitamin case studies’ PDF, English
Link to: Process Technologies to Optimize Detergent Manufacturing
Copyright: Verlag für chemische Industrie H. Ziolkowsky GmbH
Published article: ‘Process Technologies to Optimize Detergent Manufacturing’. PDF, English
Link to: Hot-melt applications for the food and beverage industry – How to safely stabilize vitamins and probiotics
Copyright: Hoskins & Fall Publishing
Published article: ‘Hot-melt applications for the food and beverage industry – How to safely stabilize vitamins and probiotics’ PDF, English
Link to: Fluidized bed solutions for optimized ingredient production
Copyright: B5 S.r.l.
Published article: ‘Fluidized bed solutions for optimized ingredient production’ PDF, English
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