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Product Information
L-Cysteine is a conditionally essential amino acid containing a sulfhydryl group (-SH), which grants it unique reductive and reactive properties. When used as a flour treatment agent, it typically appears as a white crystalline powder or granules. Its primary function stems from its ability to cleave the disulfide bonds (-S-S-) within and between glutenin molecules in flour. This action softens the dough, reduces its viscosity, and improves its extensibility and machinability. It significantly shortens dough mixing and fermentation times, boosting production efficiency, and enhances the texture and volume of the final baked products. It is primarily used in baked goods requiring rapid production or soft doughs.
Product Nature
Physical Properties:
· Appearance: White crystals or crystalline powder, commonly monohydrate.
· Solubility: Freely soluble in water, ammonia, alkaline solutions, and dilute acids; insoluble in organic solvents like ether and acetone.
· Optical Activity: Levorotatory, characteristic of its L-configuration.
· Odor: Slight characteristic odor of sulfur compounds.Chemical & Functional Properties (for Flour Treatment):
· Reducing Property: The sulfhydryl group (-SH) is the key functional group responsible for its dough-improving effect, capable of reducing disulfide bonds in flour proteins.
· Mechanism of Action: Selectively reduces disulfide bonds in gluten proteins, weakening the gluten network. This transforms a strong, tough dough into a soft, relaxed one with reduced elasticity and increased extensibility.
· Improved Machinability: The softened dough is easier to mix, divide, sheet, and mold, with reduced shrinkage, making it ideal for mechanized production.
· Accelerated Fermentation: Softened gluten facilitates gas retention and expansion, potentially shortening fermentation time.
· Instability: Prone to oxidation in air, forming L-cystine (containing disulfide bonds) and losing its reductive activity, thus requiring proper storage.
Product Usage
1.Baking Industry (Primary Application):
· No-Time/Tight-Schedule Breads: Used in hamburger buns, hot dog rolls, and white bread to significantly reduce fermentation and proofing times.
· Biscuits & Cookies: Used in short-dough biscuits and cookies to reduce dough hardness, facilitating sheeting and molding, and preventing deformation.
· Pastries: Used in cakes, pie crusts, etc., to improve batter flow and final product texture.
2.Other Food Applications:
· As a nutritional supplement (dosage considerations apply).
· As a flavor precursor in the production of meat flavors.
Safety Matters
Health Hazards:
· Safe for human consumption at regulated usage levels (typically 20-90 mg/kg flour). It is a naturally occurring amino acid in the human body.
· Excessive intake may cause nausea, vomiting, diarrhea, etc.
· Powder may cause mild irritation to eyes and respiratory tract.Handling Protection:
· Handle in a well-ventilated area. Wear a dust mask and gloves to minimize dust exposure.
· Avoid dust formation and inhalation. Avoid contact with eyes.
· Wash hands after handling.Storage & Transportation:
· Store in a cool, dry, light-resistant, tightly sealed container, preferably under nitrogen or vacuum, and ideally at low temperature (e.g., 2-8°C). This is crucial to prevent oxidation.
· Must be stored in a clean, dedicated food raw material warehouse, strictly segregated from non-food chemicals.
· Keep containers tightly closed. Use promptly after opening.Usage & Compliance:
· Use strictly according to the scope and maximum limits specified by regulations such as China's GB 2760 or the corresponding regulations of the target country. The maximum usage level in China as a flour treatment agent is 0.06 g/kg (based on flour).
· Obtain a Certificate of Analysis (CoA) from the supplier confirming food grade compliance, paying attention to optical purity (ensuring L-form) and impurity levels.
· It is often dissolved in water before being added to flour or dough to ensure uniform distribution.
FAQ
Q:What are your main products?
A:We specialize in five core areas: general chemicals and food additives, water treatment and disinfection chemicals, oilfield drilling additives, fertilizers and soil conditioners, and solvents and specialty chemicals. We provide one-stop chemical procurement and solutions across multiple industries.
Q:How do you ensure the consistent quality and reliability of your products?
A:Quality is our cornerstone. We are ISO 9001 certified for quality management, ISO 14001 for environmental management, and ISO 45001 for occupational health and safety. We implement strict quality control throughout the entire process, from raw material procurement to factory delivery, to ensure that every batch of products meets specifications.
Q:Can you provide customized products or solutions based on our specific needs?
A:Of course. We have a dedicated R&D and technical team dedicated to solving our customers' specific challenges. Whether it's adjusting product formulas, developing specific specifications, or customizing solutions for your processes, we are happy to provide customized services. Please provide your specific requirements and our engineers will work with you.
Q:What kind of technical support and after-sales service do you provide if problems arise?
A:We provide comprehensive technical support and after-sales service. We have a dedicated team to assist with everything from product selection guidance and application support to rapid response to after-sales issues. We promise to provide timely and professional feedback on your inquiries to ensure smooth operations.
Q:What is the minimum order quantity (MOQ) and delivery time?
A:To meet the needs of diverse customers, we offer flexible MOQs. The specific MOQ and delivery time depend on the product type and order size. We will provide you with a detailed quote, MOQ, and estimated delivery time within 24 hours of receiving your detailed inquiry.
Q:Do your products comply with international environmental and safety standards?
A:Yes, compliance is a key aspect of our product design. Our product development and production processes strictly adhere to relevant international and regional regulations. We also actively offer product options that comply with standards such as REACH and RoHS, and provide you with detailed Safety Data Sheets (SDS) to ensure safe and compliant use.
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