Overview
Azocasein is a synthetic chromogenic substrate derived from casein, commonly used in biochemical assays to measure proteolytic enzyme activity. Its primary function is to serve as a substrate for proteases, which cleave the azo dye moiety, resulting in a measurable color change. This property makes it a valuable tool in laboratories for quantifying enzyme activity. Originally developed for research purposes, azocasein has found widespread use in both academic and industrial settings. Its ease of use and reliable results have made it a standard in protease assays. The compound is typically supplied as a yellow to orange powder, soluble in aqueous solutions, and stable under recommended storage conditions.
Physical and Chemical Properties
Azocasein appears as a yellow to orange powder with good solubility in water. The compound is designed to undergo a color change when cleaved by proteolytic enzymes, making it ideal for spectrophotometric assays. The exact molecular weight and formula may vary depending on the degree of modification during synthesis. Its stability is maintained when stored in cool, dry conditions, typically between 2-8°C. The compound is sensitive to moisture and light, which can degrade its performance over time. Proper handling and storage are essential to maintain its efficacy in assays.
Main Applications
Azocasein is predominantly used in biochemical research to measure protease activity. It is a preferred substrate for enzymes such as trypsin, chymotrypsin, and other serine or cysteine proteases. The colorimetric assay based on azocasein cleavage is straightforward and reproducible, making it suitable for high-throughput screening. Beyond academic research, azocasein is employed in industrial applications, including quality control in enzyme production and biotechnology. Its ability to provide quantitative data on enzyme kinetics makes it indispensable in enzyme characterization and optimization studies.
Safety and Storage
Azocasein should be handled with care to avoid inhalation or contact with skin and eyes. Personal protective equipment, including gloves and safety goggles, is recommended when working with this compound. In case of exposure, rinse thoroughly with water and seek medical advice if irritation persists. Storage conditions are critical to maintaining the compound's stability. Azocasein should be kept in a tightly sealed container, protected from moisture and light, at temperatures between 2-8°C. Prolonged exposure to higher temperatures or humidity can degrade the substrate, reducing its effectiveness in assays.
B2B Procurement Guide
When procuring azocasein for B2B purposes, it is essential to verify the supplier's reliability and the product's purity. Analytical data, such as HPLC or spectrophotometric analysis, should be provided to ensure the substrate meets the required specifications for your applications. Price ranges for azocasein typically vary between $50 to $200 per gram, depending on purity and supplier. Bulk purchasing may offer cost savings, but buyers should confirm storage and handling recommendations to avoid degradation. Additionally, consider suppliers who offer technical support and documentation to assist with assay optimization.
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