Sökning: L773:0021 8561 OR L773:1520 5118
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Relationship betwee...
Relationship between the microstructure and the mechanical and barrier properties of whey protein films
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Anker, M. (författare)
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- Stading, Mats (författare)
- RISE,SIK – Institutet för livsmedel och bioteknik
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- Hermansson, Ann-Marie (författare)
- RISE,SIK – Institutet för livsmedel och bioteknik
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(creator_code:org_t)
- 2000-08-17
- 2000
- Engelska.
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Ingår i: Journal of Agricultural and Food Chemistry. - : American Chemical Society (ACS). - 0021-8561 .- 1520-5118. ; 48:9, s. 3806-3816
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Abstract
Ämnesord
Stäng
- This work was focused on the relationship between the microstructure and the mechanical and barrier properties of whey protein isolate (WPI) films. Sorbitol (S) and glycerol (G) were used as plasticizers and the pH was varied between 7 and 9. The films were cast from heated aqueous solutions and dried in a climate room at 23 °C and 50% relative humidity for 16 h. The microstructure of the films was found to be dependent on the concentration, the plasticizers, and the pH. When the concentration increased, a more aggregated structure was formed, with a denser protein network and larger pores. This resulted in increased water vapor permeability (WVP) and decreased oxygen permeability (OP). When G was used as a plasticizer instead of S, the microstructure was different, and the moisture content and WVP approximately doubled. When the pH increased from 7 to 9, a denser protein structure was formed, the strain at break increased, and the OP decreased.
Ämnesord
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Livsmedelsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Food Science (hsv//eng)
Nyckelord
- Food Engineering
- Livsmedelsteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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