Azo‑Xylan from Birchwood – Research Use Only

Azo‑Xylan from Birchwood is a chromogenic xylan substrate widely used for the detection, screening, and characterization of xylan‑degrading enzymes. The azo dye is covalently linked to birchwood‑derived xylan, enabling rapid, colorimetric quantification of endo‑β‑1,4‑xylanase and accessory hemicellulase activities. This substrate is ideal for enzyme discovery, biomass deconstruction studies, microbial screening, and high‑throughput assay development. Each batch is prepared to biotechnology‑grade specifications and supplied as a dry powder for flexible assay formulation.

Scientific Overview

Azo‑xylan is a dyed, insoluble xylan substrate that releases soluble, colored fragments upon enzymatic cleavage. This makes it a powerful tool for quantifying the activity of endo‑β‑1,4‑xylanases and related hemicellulases involved in plant cell wall deconstruction. Birchwood xylan provides a complex, natural substrate structure representative of hardwood hemicellulose, enabling realistic assessment of enzyme performance on lignocellulosic biomass. Azo‑xylan is widely used in enzyme discovery, microbial screening, industrial biotechnology, and biofuel research.

Common Research Applications

• Colorimetric assays for endo‑β‑1,4‑xylanase activity
• Screening of microbial strains for hemicellulase production
• Biomass deconstruction and lignocellulose breakdown studies
• Enzyme discovery and characterization workflows
• High‑throughput screening of enzyme libraries
• Evaluation of accessory enzymes (esterases, arabinofuranosidases, glucuronidases)

Usage & Handling Guidance

Reconstitute in assay buffer immediately before use. Mix thoroughly to ensure uniform suspension. Avoid prolonged exposure to strong light or oxidizing agents. Store dry powder at room temperature in a tightly sealed container.

• Storage: RT, dry
• Handling: Prepare fresh suspensions; mix well before use
• Compatibility: Suitable for colorimetric xylanase assays and enzyme screening platforms

What You Get

• 500 mg biotechnology‑grade Azo‑Xylan (Birchwood)
• Ready for xylanase and hemicellulase assay workflows
• Batch‑specific documentation available upon request
• For research use only (RUO)

Frequently Asked Questions

• What enzymes can be assayed using Azo‑Xylan?
  Azo‑xylan is primarily used to measure endo‑β‑1,4‑xylanase activity, but it is also compatible with workflows involving accessory hemicellulases such as β‑xylosidases, arabinofuranosidases, acetyl xylan esterases, and glucuronidases.
• How does the chromogenic detection work?
  The azo dye is covalently attached to birchwood xylan. When xylanases cleave β‑1,4‑xylosidic linkages, soluble dyed fragments are released, producing a measurable color change in the supernatant.
• Is this substrate suitable for high‑throughput screening?
  Yes. Azo‑xylan is widely used in HTS workflows for enzyme discovery, microbial screening, and directed evolution studies due to its rapid, plate‑reader‑compatible colorimetric readout.
• How should I prepare the substrate for assays?
  Reconstitute the powder in assay buffer immediately before use and mix thoroughly. Because the substrate is insoluble, continuous mixing or vortexing may be required for consistent results.
• What is the source of the xylan?
  The xylan component is derived from birchwood, providing a complex hardwood hemicellulose structure representative of natural lignocellulosic biomass.
• Can I obtain a COA or TDS?
  Yes. COA/TDS availability is batch dependent. Contact us with the catalog and lot number to request documentation for the batch being shipped.
• Is this product suitable for industrial or food applications?
  No. This reagent is intended exclusively for in vitro research use only (RUO) and is not validated for food, feed, clinical, or industrial manufacturing applications.

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References

• Galanopoulou AP, et al. Characterization of the highly efficient acid-stable xylanase and β-xylosidase system from the fungus Byssochlamys spectabilis ATHUM 8891 (Paecilomyces variotii ATHUM 8891). J Fungi. 2021;7(6):430.
• Hameleers L, et al. Polysaccharide utilization loci-driven enzyme discovery reveals BD-FAE: a bifunctional feruloyl and acetyl xylan esterase active on complex natural xylans. Biotechnol Biofuels. 2021;14:127.
• Cai J, et al. [Exact title not fully matched; related 2021 paper on xylanase optimization and biomass deconstruction: Optimisation of xylanases production by two Cellulomonas strains and their use for biomass deconstruction]. Appl Microbiol Biotechnol. 2021 (or see Appl Biochem Biotechnol for similar works).
• Kim DY, et al. Identification and characterization of a novel, cold-adapted D-xylobiose- and D-xylose-releasing endo-β-1,4-xylanase from an Antarctic soil bacterium, Duganella sp. PAMC 27433. Biomolecules. 2021;11(5):680.
• Tran TN, Doan CT, Wang SL. Conversion of Wheat Bran to Xylanases and Dye Adsorbent by Streptomyces thermocarboxydus. Polymers. 2021;13(2):287.
• Hero JS, et al. Proteomic analysis of secretomes from Bacillus sp. AR03: characterization of enzymatic cocktails active on complex carbohydrates for xylooligosaccharides production. Prep Biochem Biotechnol. 2021;51(9):871-880.
• Contreras F, et al. Purification and characterization of two thermostable xylanases from a halotolerant Bacillus sp. Asc6BA isolated from Salar de Ascotán, Atacama Desert. Extremophiles. 2021;25(1):61-72.
• Yu J, et al. High-level expression and enzymatic properties of a novel thermostable xylanase with high arabinoxylan degradation ability from Chaetomium sp. suitable for beer mashing. Int J Biol Macromol. 2021;168:223-232.
• Raji O, et al. The coordinated action of glucuronoyl esterase and α-glucuronidase promotes the disassembly of lignin–carbohydrate complexes. FEBS Lett. 2021;595(3):351-359.