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Xylans are a diverse family of hemicellulosic polysaccharides found in abundance within the cell walls of nearly all flowering plants. Unfortunately, naturally occurring xylans are highly heterogeneous, limiting studies of their synthesis and structure-function relationships. Here, we demonstrate that xylan synthase 1 from the charophyte alga is a powerful biocatalytic tool for the bottom-up synthesis of pure β-1,4 xylan polymers that self-assemble into microparticles in vitro. Using uridine diphosphate-xylose (UDP-xylose) and defined saccharide primers as substrates, we demonstrate that the shape, composition, and properties of the self-assembling xylan microparticles could be readily controlled via the fine structure of the xylan oligosaccharide primer used to initiate polymer elongation. Furthermore, we highlight two approaches for bottom-up and surface functionalization of xylan microparticles with chemical probes and explore the susceptibility of xylan microparticles to enzymatic hydrolysis. Together, these results provide a useful platform for structural and functional studies of xylans to investigate cell wall biosynthesis and polymer-polymer interactions and suggest possible routes to new biobased materials with favorable properties for biomedical and renewable applications.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9284610 | PMC |
http://dx.doi.org/10.1021/acsmaterialsau.2c00006 | DOI Listing |
Enzyme Microb Technol
January 2023
College of Food Science, Shenyang Agricultural University, Shenyang, China; College of Biosciences and Biotechnology, Shenyang Agricultural University, Shenyang, China. Electronic address:
ACS Mater Au
July 2022
Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States.
Xylans are a diverse family of hemicellulosic polysaccharides found in abundance within the cell walls of nearly all flowering plants. Unfortunately, naturally occurring xylans are highly heterogeneous, limiting studies of their synthesis and structure-function relationships. Here, we demonstrate that xylan synthase 1 from the charophyte alga is a powerful biocatalytic tool for the bottom-up synthesis of pure β-1,4 xylan polymers that self-assemble into microparticles in vitro.
View Article and Find Full Text PDFFood Res Int
February 2021
Bioprocess and Metabolic Engineering Laboratory, Department of Food Engineering, University of Campinas, Campinas, SP, Brazil. Electronic address:
Synbiotic formulations and microencapsulation techniques have been explored in food industries to guarantee the viability of probiotic organisms; playing an important role in microbiota balance. Microparticles of alginate, gelatin and xylo-oligosaccharides (XOS) were produced by external gelation with the purpose of enhancing the survival rate of the probiotic L. acidophilus.
View Article and Find Full Text PDFCarbohydr Polym
December 2020
Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Gen. Gustavo Cordeiro de Faria, 59010-180, Natal, Rio Grande do Norte, Brazil. Electronic address:
Xylan extracted from corn cobs was used to produce mesalamine-loaded xylan microparticles (XMP5-ASA) by cross-linking polymerization using a non-hazardous cross-linking agent. The microparticles were characterized by thermal analysis (DSC/TG), X-ray diffraction (XRD), Infrared spectroscopy (FTIR-ATR) and scanning electron microscopy (SEM). A comparative study of the in vitro drug release from XMP5-ASA and from gastro-resistant capsules filled with XMP5-ASA (XMPCAP5-ASA) or 5-ASA was also performed.
View Article and Find Full Text PDFInt J Biol Macromol
February 2018
Biochemistry Department/Laboratory of Immunopathology Keizo Asami (LIKA), Universidade Federal de Pernambuco-UFPE, Av. Prof. Moraes Rego s/n, CEP 50.670-420, Recife, PE, Brazil. Electronic address:
This study evaluated the l-ascorbic acid (AA) encapsulation in microparticles of xyloglucan (XAA) extracted from Hymenaea courbaril seeds by spray drying (SD) and its application in tilapia fish burgers. The encapsulation efficiency was 96.34±1.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!