X-ray photoelectron spectroscopic analysis of rice kernels and flours: Measurement of surface chemical composition.
Identifieur interne : 001376 ( PubMed/Checkpoint ); précédent : 001375; suivant : 001377X-ray photoelectron spectroscopic analysis of rice kernels and flours: Measurement of surface chemical composition.
Auteurs : Malik A. Nawaz [Australie] ; Claire Gaiani [France] ; Shu Fukai [Australie] ; Bhesh Bhandari [Australie]Source :
- Food chemistry [ 0308-8146 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
- analyse : Amidon, Farine, Lipides.
- métabolisme : Protéines végétales.
- Cuisine (préparation), Microscopie électronique à balayage, Oryza, Spectroscopie photoélectronique.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Lipids, Starch.
- analysis : Flour.
- chemistry : Oryza.
- chemical , metabolism : Plant Proteins.
- methods : Photoelectron Spectroscopy.
- Cooking, Microscopy, Electron, Scanning.
Abstract
The objectives of this study were to evaluate the ability of X-ray photoelectron spectroscopy (XPS) to differentiate rice macromolecules and to calculate the surface composition of rice kernels and flours. The uncooked kernels and flours surface composition of the two selected rice varieties, Thadokkham-11 (TDK11) and Doongara (DG) demonstrated an over-expression of lipids and proteins and an under-expression of starch compared to the bulk composition. The results of the study showed that XPS was able to differentiate rice polysaccharides (mainly starch), proteins and lipids in uncooked rice kernels and flours. Nevertheless, it was unable to distinguish components in cooked rice samples possibly due to complex interactions between gelatinized starch, denatured proteins and lipids. High resolution imaging methods (Scanning Electron Microscopy and Confocal Laser Scanning Microscopy) were employed to obtain complementary information about the properties and location of starch, proteins and lipids in rice kernels and flours.
DOI: 10.1016/j.foodchem.2016.05.188
PubMed: 27374542
Affiliations:
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Nawaz</name><affiliation wicri:level="1"><nlm:affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072</wicri:regionArea><wicri:noRegion>Qld 4072</wicri:noRegion></affiliation></author><author><name sortKey="Gaiani, Claire" sort="Gaiani, Claire" uniqKey="Gaiani C" first="Claire" last="Gaiani">Claire Gaiani</name><affiliation wicri:level="1"><nlm:affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia; Université de Lorraine, Laboratoire d'Ingénierie des Biomolécules (LIBio), 2 av de la Foret de Haye, TSA 40602, 54518 Vandœuvre lès Nancy, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia; Université de Lorraine, Laboratoire d'Ingénierie des Biomolécules (LIBio), 2 av de la Foret de Haye, TSA 40602, 54518 Vandœuvre lès Nancy</wicri:regionArea><wicri:noRegion>54518 Vandœuvre lès Nancy</wicri:noRegion><wicri:noRegion>54518 Vandœuvre lès Nancy</wicri:noRegion></affiliation></author><author><name sortKey="Fukai, Shu" sort="Fukai, Shu" uniqKey="Fukai S" first="Shu" last="Fukai">Shu Fukai</name><affiliation wicri:level="1"><nlm:affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072</wicri:regionArea><wicri:noRegion>Qld 4072</wicri:noRegion></affiliation></author><author><name sortKey="Bhandari, Bhesh" sort="Bhandari, Bhesh" uniqKey="Bhandari B" first="Bhesh" last="Bhandari">Bhesh Bhandari</name><affiliation wicri:level="1"><nlm:affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia. 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The uncooked kernels and flours surface composition of the two selected rice varieties, Thadokkham-11 (TDK11) and Doongara (DG) demonstrated an over-expression of lipids and proteins and an under-expression of starch compared to the bulk composition. The results of the study showed that XPS was able to differentiate rice polysaccharides (mainly starch), proteins and lipids in uncooked rice kernels and flours. Nevertheless, it was unable to distinguish components in cooked rice samples possibly due to complex interactions between gelatinized starch, denatured proteins and lipids. High resolution imaging methods (Scanning Electron Microscopy and Confocal Laser Scanning Microscopy) were employed to obtain complementary information about the properties and location of starch, proteins and lipids in rice kernels and flours.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">27374542</PMID><DateCreated><Year>2016</Year><Month>07</Month><Day>04</Day></DateCreated><DateCompleted><Year>2017</Year><Month>01</Month><Day>17</Day></DateCompleted><DateRevised><Year>2017</Year><Month>01</Month><Day>17</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0308-8146</ISSN><JournalIssue CitedMedium="Internet"><Volume>212</Volume><PubDate><Year>2016</Year><Month>Dec</Month><Day>01</Day></PubDate></JournalIssue><Title>Food chemistry</Title><ISOAbbreviation>Food Chem</ISOAbbreviation></Journal><ArticleTitle>X-ray photoelectron spectroscopic analysis of rice kernels and flours: Measurement of surface chemical composition.</ArticleTitle><Pagination><MedlinePgn>349-57</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.foodchem.2016.05.188</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0308-8146(16)30877-9</ELocationID><Abstract><AbstractText>The objectives of this study were to evaluate the ability of X-ray photoelectron spectroscopy (XPS) to differentiate rice macromolecules and to calculate the surface composition of rice kernels and flours. The uncooked kernels and flours surface composition of the two selected rice varieties, Thadokkham-11 (TDK11) and Doongara (DG) demonstrated an over-expression of lipids and proteins and an under-expression of starch compared to the bulk composition. The results of the study showed that XPS was able to differentiate rice polysaccharides (mainly starch), proteins and lipids in uncooked rice kernels and flours. Nevertheless, it was unable to distinguish components in cooked rice samples possibly due to complex interactions between gelatinized starch, denatured proteins and lipids. High resolution imaging methods (Scanning Electron Microscopy and Confocal Laser Scanning Microscopy) were employed to obtain complementary information about the properties and location of starch, proteins and lipids in rice kernels and flours.</AbstractText><CopyrightInformation>Copyright © 2016. Published by Elsevier Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Nawaz</LastName><ForeName>Malik A</ForeName><Initials>MA</Initials><AffiliationInfo><Affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gaiani</LastName><ForeName>Claire</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia; Université de Lorraine, Laboratoire d'Ingénierie des Biomolécules (LIBio), 2 av de la Foret de Haye, TSA 40602, 54518 Vandœuvre lès Nancy, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fukai</LastName><ForeName>Shu</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bhandari</LastName><ForeName>Bhesh</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>The University of Queensland, School of Agriculture and Food Sciences, Qld 4072, Australia. 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Nawaz</name></noRegion><name sortKey="Bhandari, Bhesh" sort="Bhandari, Bhesh" uniqKey="Bhandari B" first="Bhesh" last="Bhandari">Bhesh Bhandari</name><name sortKey="Fukai, Shu" sort="Fukai, Shu" uniqKey="Fukai S" first="Shu" last="Fukai">Shu Fukai</name></country><country name="France"><noRegion><name sortKey="Gaiani, Claire" sort="Gaiani, Claire" uniqKey="Gaiani C" first="Claire" last="Gaiani">Claire Gaiani</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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