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Development of a Method for Measurement of the Mechanical Stability of Granulated Milk Powders
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
2012 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Barry Callebaut Sweden AB manufactures a large number of powder mixes for vending and coffee machines. It is important that the powder obtains good flowability, good instant properties and reduced tendency to cake during storage. Agglomeration or granulation of powder can be used to improve these properties. Agglomerated or granulated powder is often fragile and can be destroyed during handling and shipping, leading to formation of smaller particles, fines. Fines have in general a tendency to cake and poorer instant properties. Therefore it is important that the powders have a good mechanical strength.The purpose of this work was to develop a method for investigating the stability of granulated milk powders to mechanical stress using the Auto – Friability Tester – PTF10 E. Two different milk powders were investigated by varying effects of rotation speed, runtime, sample size and the amount of added ball bearings. The attrition of the powder samples were analyzed by an ALPINE Air Jet Sieve.The results showed that the degree of attrition was dependent on the settings used and the powder samples were affected by the sieving which needs to be taken into consideration.In conclusion, it is possible to develop the methodology further but more measurements are needed to improve precision and accuracy. 

Place, publisher, year, edition, pages
2012. , 27 p.
Keyword [en]
powder, attrition, fines, granulation, agglomeration
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-19770OAI: oai:DiVA.org:lnu-19770DiVA: diva2:532715
External cooperation
Barry Callebaut Sweden AB
Subject / course
Chemistry
Educational program
Nutrition and Food Science Programme, 180 credits
Uppsok
Physics, Chemistry, Mathematics
Supervisors
Examiners
Available from: 2012-06-15 Created: 2012-06-12 Last updated: 2012-10-08Bibliographically approved

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf