Molecular Characterization of Arabinoxylan from Wheat Beer, Beer Foam and Defoamed Beer.
arabinoxylan
avDP
ethanol fractionation
molecular weight
monosaccharide
wheat beer
Journal
Molecules (Basel, Switzerland)
ISSN: 1420-3049
Titre abrégé: Molecules
Pays: Switzerland
ID NLM: 100964009
Informations de publication
Date de publication:
29 Mar 2019
29 Mar 2019
Historique:
received:
23
02
2019
revised:
25
03
2019
accepted:
27
03
2019
entrez:
3
4
2019
pubmed:
3
4
2019
medline:
20
7
2019
Statut:
epublish
Résumé
This research was to explore the distribution and some molecular characterization of arabinoxylan in wheat beer (B), beer foam (BF) and defoamed beer (DB) because of the crucial influences of arabinoxylan on wheat beer and its foam. The purified arabinoxylan from B, BF, and DB were fractionated by ethanol of 50%, 67%, 75%, and 80%. The monosaccharide composition, substitution degree (Ara/Xyl ratio, A/X), and average degrees of polymerization (avDP) of arabinoxylan were investigated. Molecular weight and microstructure were also involved in this study by GPC-LLS and SEM, respectively. Under the same ethanol concentration, the arabinoxylan content in the BF was higher than the other two, respectively, and it was precipitated in BF fraction with 50% ethanol which accounted for 80.84% of the total polysaccharides. Meanwhile, the greatest substitution degree (A/X) and highest value of avDP of the arabinoxylan was found in all beer foam fractions regardless of the concentration of ethanol used. The average degrees of polymerization (avDP) of arabinoxylan displayed a significant difference (
Identifiants
pubmed: 30934822
pii: molecules24071230
doi: 10.3390/molecules24071230
pmc: PMC6479467
pii:
doi:
Substances chimiques
Polysaccharides
0
Xylans
0
arabinoxylan
9040-27-1
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : National Natural Science Foundation of China
ID : 31271927
Organisme : Shandong Province Key Research and Development Project
ID : 2016GNC110015
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