Antioxidant activity of xylooligosaccharides produced from glucuronoxylan by Xyn10A and Xyn30D and eucalyptus autohydrolysates

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RECERCAT Home > Universitat de Barcelona > Genètica, Microbiologia i Estadística > Articles publicats en revistes (Genètica, Microbiologia i Estadística) > View document

To access the full text documents, please follow this link: http://hdl.handle.net/2445/143969

dc.contributor	Universitat de Barcelona
dc.contributor.author	Valls, Cristina
dc.contributor.author	Pastor Blasco, Francisco I. Javier
dc.contributor.author	Vidal, Teresa
dc.contributor.author	Roncero, M. Blanca
dc.contributor.author	Díaz Lucea, Pilar
dc.contributor.author	Martínez Martínez, Josefina
dc.contributor.author	Valenzuela Mayorga, Susana Valeria
dc.date	2019-11-05T16:16:32Z
dc.date	2019-11-05T16:16:32Z
dc.date	2018-04-07
dc.date	2019-11-05T16:16:32Z
dc.identifier.citation	0144-8617
dc.identifier.citation	679946
dc.identifier.uri	http://hdl.handle.net/2445/143969
dc.format	8 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	Elsevier B.V.
dc.relation	Versió postprint del document publicat a: https://doi.org/10.1016/j.carbpol.2018.04.028
dc.relation	Carbohydrate Polymers, 2018, vol. 194, p. 43-50
dc.relation	https://doi.org/10.1016/j.carbpol.2018.04.028
dc.rights	cc-by-nc-nd (c) Elsevier B.V., 2018
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by-nc-nd/3.0/es
dc.subject	Antioxidants
dc.subject	Eucaliptus
dc.subject	Antioxidants
dc.subject	Eucalyptus
dc.title	Antioxidant activity of xylooligosaccharides produced from glucuronoxylan by Xyn10A and Xyn30D and eucalyptus autohydrolysates
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/acceptedVersion
dc.description.abstract	Antioxidant activity of xylooligosaccharides (XOS) released from beechwood and birchwood glucuronoxylans by two diﬀerent xylanases, one from family GH10 (Xyn10A) and another from family GH30 (Xyn30D) was ex-amined. The ABTS (2, 2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)) method was used, since it resulted more accurate for the antioxidant activity determination of XOS. Thin layer chromatography and MALDI-TOF MS analysis showed that Xyn10A produced a mixture of neutral and acidic XOS whereas the XOS produced by Xyn30D were all acidic, containing a methylglucuronic acid (MeGlcA) ramiﬁcation. These acidic XOS, MeGlcA substituted, showed a strongly higher antioxidant activity than the XOS produced by Xyn10A (80% vs. 10%respectively, at 200 μgmL−1). Moreover, the antioxidant activity increased with the degree of polymerization of XOS, and depended on the xylan substrate used. The antioxidant capacity of eucalyptus autohydrolysates after xylanase treatment was also analysed, showing a decrease of their antioxidant activity simultaneous with the decrease in XOS length.

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