<b>Antioxidant capacity of phytic acid purified from rice bran</b> - doi: 10.4025/actascitechnol.v34i4.16358
<p><span style="font-family: Times New Roman; font-size: small;"> </span><span style="font-size: x-small;"><span style="mso-ansi-language: EN-US;" lang="EN-US"><span style="font-family: Aldine401 BT;">Rice bran is...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidade Estadual de Maringá
2012-10-01
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| Series: | Acta Scientiarum: Technology |
| Subjects: | |
| Online Access: | http://periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/16358 |
| Summary: | <p><span style="font-family: Times New Roman; font-size: small;"> </span><span style="font-size: x-small;"><span style="mso-ansi-language: EN-US;" lang="EN-US"><span style="font-family: Aldine401 BT;">Rice bran is a by-product of rice processing industry, with high levels of phytic acid or phytate. Considering phytic acid antioxidant activity, its various applications and its high concentration in rice bran, this study had the objective of evaluating the antioxidant capacity of purified phytic acid from rice bran using three different methods. Using of 2,4,6-tripyridil-s-triazine or method of FRAP (Ferric Reducing Antioxidant Power)</span></span><span class="hps"><span style="font-family: Arial; mso-ansi-language: EN; mso-bidi-font-size: 9.0pt;" lang="EN">,</span></span><span style="font-family: Arial; mso-ansi-language: EN; mso-bidi-font-size: 9.0pt;" lang="EN"> </span></span><span style="mso-ansi-language: EN-US;" lang="EN-US"><span style="font-family: Aldine401 BT;"><span style="font-size: x-small;">reducing Fe</span><sup><span style="font-size: xx-small;">2+ </span></sup><span style="font-size: x-small;">activity was not detected for standard or purified phytic acid. With BPS (bathophenanthroline) method, the Fe</span><sup><span style="font-size: xx-small;">2+</span></sup><span style="font-size: x-small;"> chelator activity of standard phytic acid and rice bran phytic acid were dependent on the concentration and contact time and were observed IC</span><sub><span style="font-size: xx-small;">50</span></sub><span style="font-size: x-small;"> values of 4.39 mg mL</span><sup><span style="font-size: xx-small;">-1</span></sup><span style="font-size: x-small;"> and IC</span><sub><span style="font-size: xx-small;">50</span></sub><span style="font-size: x-small;"> of 7.54 mg mL</span><sup><span style="font-size: xx-small;">-1</span></sup><span style="font-size: x-small;">, respectively. By the deoxyribose method, the standard phytic acid inhibited the hydroxyl radical with an IC</span><sub><span style="font-size: xx-small;">50</span></sub><span style="font-size: x-small;"> of 0.70 mg mL</span><sup><span style="font-size: xx-small;">-1</span></sup><span style="font-size: x-small;"> while the rice bran phytic acid showed a maximum inhibitory activity of 40% associated to its chelating capacity and confirm this important antioxidant capacity. </span></span></span></p><p><span style="font-family: Times New Roman; font-size: small;"> </span><span style="font-size: x-small;"><span style="font-family: Aldine401 BT;"><span style="mso-ansi-language: EN-US;" lang="EN-US"> </span></span></span></p><p><span style="font-family: Times New Roman; font-size: small;"> </span></p> |
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| ISSN: | 1806-2563 1807-8664 |