Food-Grade Silica Adsorbent (Special for Animal Oil Processing)

As a high-performance adsorbent and phosphorus remover tailored for animal oil processing, food-grade silica selectively traps phospholipids, saponins, and trace metal contaminants in animal oils, while significantly improving the oxidative stability of the final product. Its precisely optimized particle size distribution enhances filtration efficiency, reducing processing time and operational costs. When used in combination with activated clay and diatomaceous earth, it further boosts decolorization effects, minimizes crude oil loss during processing, elevates product quality, and extends the shelf life of animal oil products. Additionally, its dust-free application enables a water-efficient degumming process, which reduces wastewater and solid waste discharge, while perfectly preserving the original natural flavor of animal oils.

This specialized silica dioxide adsorbent is a purpose-built functional material designed exclusively for the processing of animal fats, including beef tallow, lard, mutton fat, and butter. It effectively resolves key pain points in animal fat processing, such as poor flavor, dull color, and short shelf life, which are caused by cholesterol precursors, off-odors, and harmful impurities. The product fully complies with strict food safety standards, including China’s GB 25576-2020, the U.S. FDA 21 CFR, and EU EC regulations, ensuring its applicability in global markets.

Technical Parameters

Application Description

Leveraging advanced surface modification technology and precision pore structure design, Zhongqi’s animal oil-specific silica adsorbent achieves dual goals of heavy metal removal and quality upgrading during the refining and deep processing of animal oils. Its specific application scenarios and effects are as follows: To address the rancidity issue in beef tallow and lard, the recommended dosage is 0.2%-0.5% for lard and 0.3%-0.5% for beef tallow.

1. High-Efficiency Dephosphorization & Degumming

Targeting the high phosphorus and saponin content in animal oils, the adsorbent’s unique mesoporous structure effectively captures phosphorus-containing and colloidal substances through precise dosage control. This not only ensures thorough dephosphorization and degumming but also minimizes oil loss during the filtration process, thereby improving overall production yield.

2. Cholesterol Precursor Removal

It selectively adsorbs cholesterol precursors (e.g., lanolin) in animal oils, reducing cholesterol formation in subsequent processing steps. This makes the processed animal oil more suitable for healthy food production—for instance, the processed butter can be used in low-fat baked goods, meeting the growing demand for healthy dietary options.

3. Clarification & Color Enhancement

The adsorbent eliminates impurity particles (e.g., meat residues) and pigmented substances (e.g., carotenoid degradation products) in animal oils, transforming the color of animal oil from pale yellow to bright white and increasing light transmittance to over 95%. This significantly enhances the product’s appearance and market competitiveness.

4. Application Case

A large-scale animal oil processing enterprise adopted our ZLSIL-W58GD model to treat butter for instant noodle oil packets. After treatment, the removal rate of heavy metal impurities reached 92%, fully meeting the strict quality requirements for food-grade oil packets and gaining recognition from the enterprise for its stable performance.

Factory Advantages

Zhongqi Guangdong Silicon Materials Co., Ltd. is a national high-tech enterprise and a provincial-level “Specialized, Refined, Unique, and Innovative” enterprise, with over 20 years of deep engagement in the silica material industry. The company owns 17 independent patents and operates a GMP-certified production facility. Equipped with advanced testing instruments such as atomic fluorescence spectrometers and laser particle analyzers, it has built a comprehensive quality control system with 26 inspection procedures covering the entire process from raw materials to finished products. Additionally, the company has obtained ISO22000 food safety management system certification, ensuring product quality and safety.

Packaging & Shipping

• Standard Packaging: 20/25 kg valve bags.

• Waterproof Design: The packaging consists of a composite film valve bag with an outer PE waterproof layer, effectively preventing moisture absorption during storage and transportation.

• Storage & Transportation Guidelines: Store in a cool, dry environment; shelf life is 24 months. Classified as non-hazardous chemicals, it supports global shipping and transportation.

• Labeling Standards: Each package is marked with mandatory legal information, including food additive classification, usage limits, and production license number. Custom labeling is available upon customer request.

Frequently Asked Questions (FAQ)

Q: Does the product affect the acid value of animal oil?

A: No negative impact. The product only adsorbs impurities such as free fatty acids and does not introduce any new acidic substances. In fact, after treatment, the acid value of animal oil can be reduced by 0.2-0.3 mg KOH/g, further improving oil quality.

Q: Will the adsorbent residue affect food safety?

A: No. After adsorption, the adsorbent can be completely removed through standard filtration processes, with a residual amount of ≤5ppm—fully complying with China’s GB 2760 food additive usage standards. Additionally, the product itself has a purity of over 99% and does not release any toxic or harmful substances.

Q: Can the treated animal oil be used for infant and children’s food?

A: Yes. The heavy metal residue of the product is far below the limit for infant food raw materials (e.g., mercury ≤0.01ppm), and it has obtained FDA certification for infant food contact materials, ensuring safety for use in infant and children’s food production.

Q: What advantages does it have over traditional deodorization methods (e.g., activated charcoal)?

A: Unlike traditional deodorization methods such as activated carbon— which adsorbs the aromatic components of animal oil, leading to a bland taste—our product only targets and removes fishy substances while preserving the original aroma of animal oil. Additionally, it provides more uniform decolorization without causing oil discoloration (e.g., turning black), maintaining the product’s natural quality.