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Antioxidants 2016, 5(3), 26;

Antioxidant Properties of Water-Soluble Gum from Flaxseed Hulls

Enzyme Bioconversion Unit (UR13ES74), National School of Engineering, Sfax University, Sfax 3030, Tunisia
Département de Génie des Procédés Industriels, Laboratoire Transformations Intégrées de la Matière Renouvelable (UTC/ESCOM, EA 4297 TIMR), Université de Technologie de Compiègne, Compiègne Cedex 60203, France
Faculty of Pharmacy, Universitat de València, Avda, Vicent Andrés Estellés, s/n 46100 Burjassot, València 46940, Spain
Burn and Wound Healing Research Center, Division of Food and Nutrition, Shiraz University of Medical Sciences, Shiraz 7198754361, Iran
Common Service Unit of Bioreactor Coupled with an Ultrafilter, National School of Engineering, Sfax University, Sfax 3030, Tunisia
Fatma Bouaziz and Mohamed Koubaa participated equally to this work.
Author to whom correspondence should be addressed.
Academic Editors: Farid Chemat and Maryline Abert-Vian
Received: 21 June 2016 / Revised: 20 July 2016 / Accepted: 27 July 2016 / Published: 2 August 2016
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Soluble flaxseed gum (SFG) was extracted from flax (Linum usitatissimum) hulls using hot water, and its functional groups and antioxidant properties were investigated using infrared spectroscopy and different antioxidant assays (2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid (ABTS), reducing power capacity, and β-carotene bleaching inhibition assay), respectively. The antioxidant capacity of SFG showed interesting DPPH radical-scavenging capacity (IC50 SFG = 2.5 mg·mL−1), strong ABTS radical scavenging activity (% inhibition ABTS = 75.6% ± 2.6% at 40 mg·mL−1), high reducing power capacity (RPSFG = 5 mg·mL−1), and potent β-carotene bleaching inhibition activity (IC50 SFG = 10 mg·mL−1). All of the obtained results demonstrate the promising potential use of SFG in numerous industrial applications, and a way to valorize flaxseed hulls. View Full-Text
Keywords: flax hull; flaxseed gum; antioxidant properties flax hull; flaxseed gum; antioxidant properties

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Bouaziz, F.; Koubaa, M.; Barba, F.J.; Roohinejad, S.; Chaabouni, S.E. Antioxidant Properties of Water-Soluble Gum from Flaxseed Hulls. Antioxidants 2016, 5, 26.

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