Catalase enzyme

Buyers must prioritize Enzyme Activity (U/g or U/mL), which defines the concentration and potency of the product. For textile or food processing, a high-activity catalase (e.g., 50,000 to 200,000 U/mL) is often preferred to reduce dosage. Additionally, verify the pH Stability Range (typically 6.0–9.0) and Temperature Optimum (usually 25°C–55°C) to ensure the enzyme remains active under your specific processing conditions. For liquid forms, check the purity and microbial count to prevent contamination in sensitive applications.

For food-grade applications, the supplier must provide ISO 22000 or HACCP certifications, and the product should meet FCC (Food Chemicals Codex) standards. If used in the textile industry for hydrogen peroxide removal, look for OEKO-TEX® or BlueSign approval to ensure environmental safety. For pharmaceutical or lab use, GMP (Good Manufacturing Practice) compliance is essential. Always request a Certificate of Analysis (COA) and a Material Safety Data Sheet (MSDS) for every batch.

Catalase is primarily derived from fungal (e.g., Aspergillus niger) or bacterial (e.g., Bacillus subtilis) fermentation, or bovine liver. Fungal catalase is highly valued in the textile and food industries due to its excellent thermal stability and wide pH tolerance. Bacterial versions are often used in specialized chemical synthesis. Ensure the supplier specifies the origin (GMO or Non-GMO), as this significantly impacts regulatory approval in markets like the EU.

Catalase is a biological protein and is highly sensitive to environmental factors. It should be stored in a cool, dry place (ideally 0°C–10°C for liquids or below 25°C for powders), away from direct sunlight. Most high-quality enzymes have a shelf life of 6–12 months; however, activity levels may drop by 5-10% annually even under optimal conditions. Ensure packaging is hermetically sealed to prevent moisture absorption and oxidation.

The biggest risk is Activity Loss during transit due to temperature fluctuations. To mitigate this, use cold-chain logistics or specialized insulated packaging for long-distance shipping. Another risk is Customs Clearance delays; enzymes are often classified under sensitive biological chemicals (HS Code 350790). Ensure all import permits and health certificates are prepared in advance to avoid port storage fees.

Start by requesting a pre-shipment sample for lab testing to verify the stated U/mL activity. Negotiate a Quality Guarantee Clause in the contract where a portion of the payment is released only after the buyer's local lab confirms the enzyme activity matches the COA. For large orders, prioritize Audited Suppliers on Made-in-China.com who have undergone third-party onsite inspections of their production facilities.

For small volumes or samples, Air Freight (Express) is recommended to minimize time in transit. For bulk sea freight, utilize Reefer Containers (Refrigerated Containers) set to 4°C. Ensure the supplier uses heavy-duty HDPE drums for liquids or multi-layer foil bags for powders to provide a barrier against light and oxygen, which can denature the enzyme.

Utilize Secured Payment services provided by Made-in-China.com to protect your funds until delivery is confirmed. Additionally, hire a third-party inspection agency (like SGS or Intertek) to perform a loading supervision and random sampling at the supplier's warehouse before the container is sealed. This ensures the quantity, packaging, and batch numbers align with your purchase order.