Food grade calcium oxide for sugar refining is a high-purity alkaline compound used to clarify and purify raw sugar juice. It neutralizes acids, precipitates impurities, and improves crystallization, ensuring a safe, high-quality final product.
Why is food grade calcium oxide used in sugar refining?
In sugar production, raw juice contains organic acids and impurities that hinder crystallization. Food grade calcium oxide raises the pH, causing proteins and colloids to coagulate and settle out. This purification step is critical for achieving the white, refined sugar that meets food safety standards.
What makes calcium oxide "food grade"?
Food grade calcium oxide must meet strict purity standards, with low levels of heavy metals and other contaminants. It is produced under controlled conditions and tested to ensure compliance with food safety regulations. This grade is essential to avoid introducing harmful substances into the sugar.
How does calcium oxide compare to other refining agents?
Calcium oxide is cost-effective and highly efficient compared to alternatives like calcium hydroxide, as it provides a stronger alkalizing effect with less material. Its consistent quality and availability make it a preferred choice for many sugar refineries.
Where to source food grade calcium oxide for sugar refining?
Choosing a reputable calcium manufacturer is crucial to ensure consistent quality and safety. Look for suppliers with certifications and experience in food-grade chemicals. Many refineries source from a trusted calcium supplier in China, where large-scale production and strict quality control are common. For those exploring options, china calcium salts producers often offer competitive pricing and reliable supply chains.
What are the key quality parameters to check?
When purchasing, verify the calcium oxide content (typically ≥95%), heavy metal limits, and loss on ignition. Request a certificate of analysis for each batch to confirm compliance with food safety standards.
常见问题
Is food grade calcium oxide safe for sugar refining?
Yes, when used according to regulations, food grade calcium oxide is safe. It is highly pure and free from harmful contaminants, ensuring the final sugar meets food safety standards. Proper handling and dosing are essential.
How is food grade calcium oxide different from industrial grade?
Food grade calcium oxide has stricter purity requirements, with lower limits for heavy metals and other impurities. Industrial grade may contain contaminants that are unacceptable in food processing. Always specify food grade for sugar refining.
Can calcium oxide be replaced by calcium hydroxide in sugar refining?
Calcium hydroxide is also used, but calcium oxide is more concentrated and can be more cost-effective. The choice depends on the specific process and equipment. Some refineries prefer calcium oxide for its stronger alkalizing effect.
