Linked Life Data

15161232

Source:http://linkedlifedata.com/resource/pubmed/id/15161232

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
11
pubmed:dateCreated
2004-5-26
pubmed:abstractText
The effects of heat treatment on the interaction of lipid and zein in a dry powder system were investigated. Linolenic acid ethyl ester (LAE) was mixed with the zein powder. The glass transition temperature (T(g)) for the dry powder zein was shown to be approximately 107 degrees C by differential scanning calorimetry. The thermogram of the zein-LAE mixed powder showed an exothermic transition near the T(g) of zein. Fourier transform infrared (FT-IR) spectroscopy was used for detecting the structural changes in zein by heat treatment, that is, elevating the temperature from 25 to 160 degrees C. The heat treatment of the powdery zein with and without LAE caused increases in the alpha-helix, beta-turn, and beta-sheet, concomitant with decreases in the intermolecular hydrogen-bonded beta-sheet and random coil. Such changes in the secondary structure were more drastic for the powder with LAE. The heating of the zein-LAE mixed powder also caused decreases in the peaks originating from LAE in the FT-IR spectra. These results suggest that the heat treatment induced the interaction of the zein and LAE in the powdery system. The influence of heating on the antioxidative activity of dry powder zein was studied by measurements of the peroxide value. When zein-LAE mixed powder was heated before storage, the oxidation of LAE was inhibited for 7 days, whereas LAE was oxidized within 1 day in the absence of heat treatment.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0021-8561
pubmed:author
pubmed:issnType
Print
pubmed:day
2
pubmed:volume
52
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3570-6
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2004
pubmed:articleTitle
Effects of heating on the interaction of lipid and zein in a dry powder system.
pubmed:affiliation
Division of Agronomy and Horticultural Science, Graduate School of Agriculture, Kyoto University (Uji Campus), Gokasho, Uji, Kyoto 611-0011, Japan. yukiko@kais.kyoto-u.ac.jp
pubmed:publicationType
Journal Article