Characterization of Wort Arabinoxylans: Molecular Weight, Dispersity, Bound Phenolic Acids, and Polymeric Fraction
Year: 2025
Type: article
Abstract: This study aimed to examine the molecular characteristics of wort arabinoxylans and the correlation of polymeric arabinoxylans (PAX) with β-glucans and wort viscosity. Twenty-one wort samples were prepared from micro-malted two-rowed spring barley. The average molecular weight of wort arabinoxylans ranged from 1.34 to 2.60 × 105 g/mol (134–260 kDa), with polydispersity indices in the range of 2.61–4.70 indicating broad molecular weight distributions. Two major phenolic acids bound to arabinoxylans, including ferulic and p-coumaric acids, were detected at the concentration of 6.89–10.87 mg/L and 0.43–0.66 mg/L, respectively. These characteristics of wort arabinoxylans were significantly influenced by barley genotype and growing location. PAX with molecular weight ≥30 kDa accounted for 29.38–68.57% of total wort arabinoxylans. PAX (r = 0.54) showed a moderate positive correlation with wort viscosity, less than that of β-glucans (r = 0.72). The correlation between wort PAX and β-glucans was weak (r = 0.20).
Source: Figshare
Authors: Xiang, Aoli, Islam, Shahidul, Xu, Minwei, Horsley, Richard, Jin, Zhao
Language: English
Subfield: Nutrition and Dietetics
Field: Nursing
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W6902404023
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