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Preparation of diglycerides by lipase-catalyzed alcoholysis of triglgicerides

Millqvist Fureby, Anna ; Tian, Li ; Adlercreutz, Patrick LU and Mattiasson, Bo LU (1997) In Enzyme and Microbial Technology 20(3). p.198-206
Abstract

Lipase from Penicillium roquefortii immobilized on porous polypropylene particles was used for enzymatic preparation of 1,2-diglycerides by alcoholysis in organic media. A screening of commercially available lipases showed that lipases from Penicillium species produced high amounts of 1,2-diglycerides from triglycelirles. Reaction parameters such as solvent, alcohol, water activity, and fatty acid chain length wet-e investigated. The positional selectivity of the lipase as well as the selectivity for type of glyceride specie were studied using pure isomers of the partial glycerides. The enzyme showed high selectivity for triglycerides and 1-monoglycerides and very low activity towards diglycerides. The lipase had a clear preference for... (More)

Lipase from Penicillium roquefortii immobilized on porous polypropylene particles was used for enzymatic preparation of 1,2-diglycerides by alcoholysis in organic media. A screening of commercially available lipases showed that lipases from Penicillium species produced high amounts of 1,2-diglycerides from triglycelirles. Reaction parameters such as solvent, alcohol, water activity, and fatty acid chain length wet-e investigated. The positional selectivity of the lipase as well as the selectivity for type of glyceride specie were studied using pure isomers of the partial glycerides. The enzyme showed high selectivity for triglycerides and 1-monoglycerides and very low activity towards diglycerides. The lipase had a clear preference for the 1- and 3-positions. The highest lipase activity was observed at low water activity, but the yield increased with increasing water activity. Above all, the regio-isomeric purity of the diglycerides increased with increasing water activity. The yield of dilaurin was 75% and furthermore, 95% of the the total dilaurin was 1,2-dilaurin. Alcohol concentration and chain length of the alcohol had insignificant effect on yield and enzyme activity, but product stability increased when alcohol was present in the reaction medium. The best solvents were ethers; higher enzyme activities were obtained in aliphatic hydrocarbons bur yields and regio-isomeric purities were low presumably due to acyl migration.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
1,2-diglycerides, Acyl migration, Immobilized lipase, Organic media, Specificity, Water activity
in
Enzyme and Microbial Technology
volume
20
issue
3
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:0031568837
ISSN
0141-0229
DOI
10.1016/S0141-0229(96)00133-0
language
English
LU publication?
yes
id
cff66363-f35f-4662-95ad-5d35da7e2c60
date added to LUP
2019-06-20 16:14:46
date last changed
2019-11-13 05:36:55
@article{cff66363-f35f-4662-95ad-5d35da7e2c60,
  abstract     = {<p>Lipase from Penicillium roquefortii immobilized on porous polypropylene particles was used for enzymatic preparation of 1,2-diglycerides by alcoholysis in organic media. A screening of commercially available lipases showed that lipases from Penicillium species produced high amounts of 1,2-diglycerides from triglycelirles. Reaction parameters such as solvent, alcohol, water activity, and fatty acid chain length wet-e investigated. The positional selectivity of the lipase as well as the selectivity for type of glyceride specie were studied using pure isomers of the partial glycerides. The enzyme showed high selectivity for triglycerides and 1-monoglycerides and very low activity towards diglycerides. The lipase had a clear preference for the 1- and 3-positions. The highest lipase activity was observed at low water activity, but the yield increased with increasing water activity. Above all, the regio-isomeric purity of the diglycerides increased with increasing water activity. The yield of dilaurin was 75% and furthermore, 95% of the the total dilaurin was 1,2-dilaurin. Alcohol concentration and chain length of the alcohol had insignificant effect on yield and enzyme activity, but product stability increased when alcohol was present in the reaction medium. The best solvents were ethers; higher enzyme activities were obtained in aliphatic hydrocarbons bur yields and regio-isomeric purities were low presumably due to acyl migration.</p>},
  author       = {Millqvist Fureby, Anna and Tian, Li and Adlercreutz, Patrick and Mattiasson, Bo},
  issn         = {0141-0229},
  language     = {eng},
  month        = {02},
  number       = {3},
  pages        = {198--206},
  publisher    = {Elsevier},
  series       = {Enzyme and Microbial Technology},
  title        = {Preparation of diglycerides by lipase-catalyzed alcoholysis of triglgicerides},
  url          = {http://dx.doi.org/10.1016/S0141-0229(96)00133-0},
  doi          = {10.1016/S0141-0229(96)00133-0},
  volume       = {20},
  year         = {1997},
}