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Lipid oxidation in potato slices under conditions simulating the production of potato granules
SIK – Institutet för livsmedelsforskning.
1991 (English)In: Journal of the American Oil Chemists Society, ISSN 0003-021X, E-ISSN 1558-9331, Vol. 68, no 3, 167-170 p.Article in journal (Refereed)
Abstract [en]

The formation of volatile compounds in potato slices was analyzed by means of gas Chromatographie headspace analysis. The experimental variables selected for the treatment of the potato slices were chosen to simulate the conditions during the first stages of an "add-back type" of process for production of potato granules. The potato slices (2 cm thick) were exposed to air of low temperature (4°C) and water at blanching temperature (76°C). Both the surface and the middle of each slice were analyzed for volatile compounds. Hexanal was the most abundant aldehyde formed. At the elevated temperature, in particular, there was an obvious formation of hexanal. After 15 min of blanching, the amount of hexanal was higher in the middle of the slices than at the surface. This difference in hexanal concentration was probably due both to the leakage of hexanal into the blanching water from the surfaces of the potato slices, and to the inac-tivation of lipoxygenase at the surfaces which prevented further oxidation during the subsequent chilling period. The hexanal formation indicates that lipid oxidation occurs during the process. The formation of other volatile compounds also is discussed. © 1990 American Oil Chemists' Society.

Place, publisher, year, edition, pages
1991. Vol. 68, no 3, 167-170 p.
Keyword [en]
Food Engineering
Keyword [sv]
Livsmedelsteknik
National Category
Food Science
Identifiers
URN: urn:nbn:se:ri:diva-9057DOI: 10.1007/BF02657762OAI: oai:DiVA.org:ri-9057DiVA: diva2:966931
Available from: 2016-09-08 Created: 2016-09-08Bibliographically approved

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