dc.contributor.author |
Sun-Waterhouse, DX |
|
dc.contributor.author |
Smith, BG |
|
dc.contributor.author |
O'Connor, CJ |
|
dc.contributor.author |
Melton, LD |
|
dc.date.accessioned |
2023-12-05T23:33:30Z |
|
dc.date.available |
2023-12-05T23:33:30Z |
|
dc.date.issued |
2008 |
|
dc.identifier.citation |
(2008). Journal of Micronutrient Analysis, 111(3), 580-585. |
|
dc.identifier.issn |
0266-349X |
|
dc.identifier.uri |
https://hdl.handle.net/2292/66759 |
|
dc.description.abstract |
The effect of cell walls (dietary fibre) from raw and cooked onions (Allium cepa L. red skinned variety) on two dietary antioxidants, l-ascorbic acid (AA) and quercetin, was investigated. Cell walls isolated from onion parenchyma tissues were incubated with AA or quercetin in HEPES buffer at pH 6.5 and 37 °C for 2 h. The resulting supernatants were analysed by the ferric reducing antioxidant power (FRAP) assay and cyclic voltammetry (CV). Results show that onion cell walls effectively reduced AA degradation, but provided no protective effect against quercetin degradation, and may increase the degradation. This suggests some type of favourable interaction of the cell wall components with AA but not with quercetin. Cooking facilitates the extraction of cell wall polysaccharides and hence influences the extent of interaction of cell wall components and antioxidants. The redox behaviour of the antioxidants, the polysaccharide components of cell walls, and their relative extractabilities all appear to have important influences on the interactions. © 2008 Elsevier Ltd. All rights reserved. |
|
dc.language |
en |
|
dc.publisher |
Elsevier |
|
dc.relation.ispartofseries |
Food Chemistry |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.subject |
30 Agricultural, Veterinary and Food Sciences |
|
dc.subject |
3006 Food Sciences |
|
dc.subject |
Complementary and Integrative Health |
|
dc.subject |
Nutrition |
|
dc.subject |
Science & Technology |
|
dc.subject |
Physical Sciences |
|
dc.subject |
Life Sciences & Biomedicine |
|
dc.subject |
Chemistry, Applied |
|
dc.subject |
Food Science & Technology |
|
dc.subject |
Nutrition & Dietetics |
|
dc.subject |
Chemistry |
|
dc.subject |
ascorbic acid |
|
dc.subject |
onion cell walls |
|
dc.subject |
cyclic voltammetry |
|
dc.subject |
antioxidant activity |
|
dc.subject |
dietary fibre |
|
dc.subject |
FRAP assay |
|
dc.subject |
pectin |
|
dc.subject |
quercetin |
|
dc.subject |
microwave- and steam-cooking |
|
dc.subject |
CELL-WALL CHEMISTRY |
|
dc.subject |
ALLIUM-CEPA |
|
dc.subject |
MODEL |
|
dc.subject |
IRON |
|
dc.subject |
POLYSACCHARIDES |
|
dc.subject |
GLUCOSIDES |
|
dc.subject |
EXTRACTS |
|
dc.subject |
FIRMNESS |
|
dc.subject |
COOKING |
|
dc.subject |
IMPACT |
|
dc.subject |
ALLIUM-CEPA L. |
|
dc.subject |
TRIBUTYRIN |
|
dc.subject |
FLAVONOIDS |
|
dc.title |
Effect of raw and cooked onion dietary fibre on the antioxidant activity of ascorbic acid and quercetin |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1016/j.foodchem.2008.04.023 |
|
pubs.issue |
3 |
|
pubs.begin-page |
580 |
|
pubs.volume |
111 |
|
dc.date.updated |
2023-11-21T03:54:19Z |
|
dc.rights.holder |
Copyright: Elsevier Ltd |
en |
pubs.author-url |
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000258171800007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d |
|
pubs.end-page |
585 |
|
pubs.publication-status |
Published |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RetrictedAccess |
en |
pubs.subtype |
Article |
|
pubs.elements-id |
80471 |
|
pubs.org-id |
Science |
|
pubs.org-id |
Chemistry |
|
dc.identifier.eissn |
1873-7072 |
|
pubs.record-created-at-source-date |
2023-11-21 |
|