Whistler Center for Carbohydrate Research and Department of Food Science, Purdue University, West Lafayette, IN 47907, USA. Electronic address:
Published: August 2022
AI Article Synopsis
Article Abstract
Corn arabinoxylan (CAX), a cell wall-derived dietary fiber, was extracted with alkali, partially purified, and treated with hydrolytic enzymes in order to investigate the relationship of fine structure and fermentability by the human gut microbiota. Glycosyl composition and linkage analysis of CAX and two hydrolysates, coupled with molecular size analysis, indicated an organized structural feature of the native polymer, which consists of a repeating structural subunit containing complex branching patterns along the xylan backbone and flanked by regions of less complexity. The two lengths of the highly branched subunit were isolated and were shown to have enhanced slow fermentation property compared to the native structure (3.3 vs. 5.9 mL gas, 4 h), that was related to increasing complexity of the branched structures. Lower molecular size structures with higher branch complexity fermented slower, contrary to a conventional view that small fiber structures approaching the oligosaccharide level are necessarily more rapidly fermented.
Feruloylated side-chain oligosaccharide substituents are a distinctive feature of cereal grains' arabinoxylans (AX), but less is known about non-feruloylated oligosaccharide side-chain substituents. In this study we explored non-feruloylated disaccharide side-chains from corn (Zea mays L.) AX that had not been exposed to alkaline conditions and successfully isolated and unequivocally characterized the structure, α-d-xylopyranosyl-(1 → 3)-l-arabinose.
This research explores the extraction of ferulated arabinoxylans (FAXs) from maize bran and their incorporation into wheat flour to assess their impact on rheological and pasting properties. Flour blends were prepared with FAX concentrations of 0%, 2%, 4%, 6%, 8%, and 10%, and these blends were then evaluated using farinograph, mixograph, micro-extensibility, and viscosity analyses. The results indicated that farinograph water absorption increased significantly ( ≤ 0.
To valorize the natural resource of corn silk as hepatoprotective food supplement, two fractions of polysaccharides (F-CSP-W/S) have been separated and purified from corn silk fermented by Lactobacillus plantarum. F-CSP-W was mainly composed of Glc, Gal, Ara, Xyl, Man (66.62: 11.
This research aimed to evaluate the gelation process of ferulated pectin (FP) and ferulated arabinoxylan (AXF) in a new mixed hydrogel and determine its microstructural characteristics. FP from sugar beet () and arabinoxylan from maize () bran were gelled via oxidative coupling using laccase as a crosslinking agent. The dynamic oscillatory rheology of the mixed hydrogel revealed a maximum storage modulus of 768 Pa after 60 min.
Purple maize is a pigmented variety rich in antioxidants. Arabinoxylans (AX) are prebiotic compounds also found in the grain wall that can form gels. Recently, antioxidants have extensively been studied for their beneficial effects.
