The application of food-grade silica in animal fats, vegetable oils and filtered oils

创建于05.27

The application of food-grade silica in animal fats, vegetable oils and filtered oils

Food-grade silica dioxide stands out with its high specific surface area, abundant porous structure, robust chemical stability, and outstanding physiological inertness. Leveraging these properties, it selectively adsorbs impurities, optimizes filtration, and preserves flavor, emerging as an indispensable core additive in the processing of butter, vegetable oils, and various oil products. Characterized by high efficiency, low consumption, and environmental friendliness, it offers comprehensive solutions for the oil industry, enabling quality enhancement, cost reduction, and process simplification. Its applications span across food-grade oil refining, high-end edible oil production, and sophisticated oil filtration processes.

Product Features

1. Selective Impurity Adsorption：With remarkable selectivity, it efficiently captures polar impurities in oils, including gums, phospholipids, trace metals like magnesium and calcium, as well as residual soap. This targeted adsorption mechanism ensures that the original flavor and color of oil products remain intact, safeguarding their sensory qualities.

2. Filtration Performance Optimization：The unique porous structure of food-grade silica dioxide serves as a natural barrier against pore blockage. By preventing the accumulation of debris within the filtration system, it significantly boosts filtration efficiency, extends the filtration cycle, and minimizes oil loss during the refining process.

3. Enhanced Oil Stability：It actively adsorbs oxidation products such as free fatty acids and conjugated olefin precursors, effectively strengthening the oil’s oxidation induction period. This enhancement not only delays the onset of oxidation but also substantially prolongs the shelf life of oil products, ensuring long - term quality maintenance.

4. Acid - Value Neutralization and pH Elevation：Capable of adjusting the acid value of oils to a neutral state, food-grade silica dioxide simultaneously elevates the pH level, contributing to the overall stability and quality improvement of the refined oils.

Product Applications

1. Impurity Removal and Refining

◦ Adsorption of Gums and Phospholipids：In the refining of butter and vegetable oils, it effectively eliminates gums, such as phospholipid complexes, thereby reducing the phosphorus content. This results in a significant enhancement of oil clarity and purity, meeting the stringent quality requirements of the food industry.

1. Flavor Retention：Unlike traditional adsorbents like activated clay, which may over - adsorb and deplete the natural flavors of oils, food-grade silica dioxide offers a gentle yet effective purification process. It preserves the rich, creamy taste of butter and the natural aroma of vegetable oils, making it the ideal choice for high-end oil processing, including specialty oils and baking oils.

2. Filtration Process Optimization

◦ Filter Aid Functionality：When used in conjunction with filter cakes, such as diatomite, it forms a “protective filter layer.” This layer acts as a shield, preventing impurities from clogging the filter media and ensuring a smooth and unobstructed flow of oils during the filtration process.

1. Cost Reduction：By reducing the overall adsorbent usage, food-grade silica dioxide not only cuts down on processing costs but also minimizes oil loss, providing a cost-effective solution for the oil industry. This dual benefit of cost reduction and yield improvement significantly enhances the economic viability of oil refining operations.

2. Butter Refining：In the refining of butter, it efficiently removes gum impurities, improving the transparency of the final product while retaining its natural milk aroma. This makes it widely applicable in the production of hotpot base materials, baking oils, and other butter-based products, ensuring consistent quality and flavor.

3. Fried Oil Purification：During the frying process, oils often accumulate various solid impurities, including french fry debris, starch granules, and carbonized residues, along with oxidation-induced gums. Food-grade silica dioxide employs physical adsorption to effectively remove these contaminants, restoring the clarity of the oil and extending its usability, thus reducing the frequency of oil replacement and associated costs.

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