Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Ångsterilisering av morötter. Infekterade med Lactobacillus plantarum.
University of Borås, School of Engineering.
2008 (Swedish)Independent thesis Basic level (degree of Bachelor)Student thesisAlternative title
Steam Sterilization of Carrots. Infected with Lactobacillus plantarum. (English)
Abstract [en]

The purpose of the project was to exam steams ability to sterilize carrots infected with Lactobacillus plantarum. The project was a cowork with Brämhults Juice AB. They had observed an increase of Lactobacillus in the production of carrot juice during the summer. To keep the flavour of fresh fruits, the juice is treated carefully with heat. This means that the juice only stays fresh for a few days, around two weeks for an unopened package and three days for an opened package. In an attempt to remove the remaining Lactobacillus of the carrots, steam is tested as an extra step in the production of juice. During the project it was found that it is difficult to reach the wanted temperature of above 100°C, when the steam is generated under pressure. When the steam was released in normal pressure, a decrease in temperature occurred that were so large that the steam had a temperature of only 40°C. At the second treatment the steam was generated at 1,8 bar pressure and 130°C, the steam then decreased to 80°C. At the third and last treatment the steam was generated under normal pressure and a temperature of 90°C was reached. At this temperature an 96,5% sterilization occurred after 15 seconds of steam treatment. This is not enough for Brämhults Juice, since they need only a few percent surviving Lactobacills after 6 seconds.

Place, publisher, year, edition, pages
University of Borås/School of Engineering , 2008.
Series
Kandidatuppsats
Keywords [en]
lactobacillus plantarum, brämhults juice ab, morötter, ånga, sterilisering
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hb:diva-18924Local ID: 2320/3747OAI: oai:DiVA.org:hb-18924DiVA, id: diva2:1310858
Note
Uppsatsnivå: CAvailable from: 2019-04-30 Created: 2019-04-30

Open Access in DiVA

fulltext(56209 kB)14 downloads
File information
File name FULLTEXT01.pdfFile size 56209 kBChecksum SHA-512
8f3e36bfd4e92c431e4c4b54ba4ff13f5d29f72e60ccf84128ee69422ab96ce0cb32e643adef782388d64129f97853004584dae25482335e5a77e5b1eccd08c7
Type fulltextMimetype application/pdf

By organisation
School of Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 14 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 5 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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