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Fine structural features and antioxidant capacity of ferulated arabinoxylans extracted from nixtamalized maize bran.
Marquez-Escalante, Jorge A; Carvajal-Millan, Elizabeth; Martínez-López, Ana L; Martínez-Robinson, Karla G; Campa-Mada, Alma C; Rascon-Chu, Agustín.
Afiliación
  • Marquez-Escalante JA; Biopolymers Laboratory, Research Center for Food and Development (CIAD, AC), Hermosillo, Sonora, Mexico.
  • Carvajal-Millan E; Biopolymers Laboratory, Research Center for Food and Development (CIAD, AC), Hermosillo, Sonora, Mexico.
  • Martínez-López AL; NANO-VAC Research Group, Department of Pharmacy and Pharmaceutical Technology, University of Navarra, Pamplona, Spain.
  • Martínez-Robinson KG; Biopolymers Laboratory, Research Center for Food and Development (CIAD, AC), Hermosillo, Sonora, Mexico.
  • Campa-Mada AC; Biopolymers Laboratory, Research Center for Food and Development (CIAD, AC), Hermosillo, Sonora, Mexico.
  • Rascon-Chu A; Biotechnology Laboratory, Research Center for Food and Development (CIAD, AC), Hermosillo, Sonora, Mexico.
J Sci Food Agric ; 103(9): 4584-4591, 2023 Jul.
Article en En | MEDLINE | ID: mdl-36852427
BACKGROUND: The nixtamalization process improves the nutritional and technological properties of maize. This process generates nixtamalized maize bran as a by-product, which is a source of arabinoxylans (AX). AX are polysaccharides constituted of a xylose backbone with mono- or di-arabinose substitutions, which can be ester-linked to ferulic acid (FA). The present study investigated the fine structural features and antioxidant capacity (AC) of nixtamalized maize bran arabinoxylans (MBAX) to comprehend the structure-radical scavenging capacity relationship in this polysaccharide deeply. RESULTS: MBAX presented a molecular weight, intrinsic viscosity, and hydrodynamic radius of 674 kDa, 1.8 dL g-1 , and 24.6 nm, respectively. The arabinose-to-xylose ratio (A/X) and FA content were 0.74 and 0.25 g kg-1 polysaccharide, respectively. MBAX contained dimers (di-FA) and trimer (tri-FA) of FA (0.14 and 0.07 g kg-1 polysaccharide, respectively). The main di-FA isomer was the 8-5' structure (80%). Fourier transform infrared spectroscopy confirmed MBAX molecular identity, and the second derivate of the spectral data revealed a band at 958 cm-1 related to the presence of arabinose disubstitution. 1 H-Nuclear magnetic resonance spectroscopy showed mono- and di-arabinose substitution in the xylan backbone with more monosubstituted residues. MBAX registered an AC of 25 and 20 µmol Trolox equivalents g-1 polysaccharide despite a low FA content, using ABTS (2,2'-azino-bis-3-ethylbenzthiazoline-6-sulfonic acid) and DPPH (1,1-diphenyl-2-picrylhydrazyl) methods, respectively. CONCLUSION: AC in MBAX could be related to the high A/X ratio (mainly monosubstitution) and the high 8-5' di-FA proportion in this polysaccharide. © 2023 Society of Chemical Industry.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Xilanos / Antioxidantes Idioma: En Revista: J Sci Food Agric Año: 2023 Tipo del documento: Article País de afiliación: México Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Xilanos / Antioxidantes Idioma: En Revista: J Sci Food Agric Año: 2023 Tipo del documento: Article País de afiliación: México Pais de publicación: Reino Unido