I. Core Product Features

BJ7505 Resin is tailored for anthocyanin extraction with three key advantages: Firstly, its high temperature resistance outperforms conventional resins, meeting mild heating requirements while preventing anthocyanin degradation. Secondly, it maintains stable morphology in water and ethanol without swelling or damage, making it particularly suitable for fixed-bed continuous operation. Thirdly, it precisely captures anthocyanins while intercepting impurities, ensuring high purification purity.

II. Application Case: Sulfur-Free Purification of Anthocyanins from Grape Juice

Anthocyanins are water-soluble natural pigments widely present in plants, first extracted from red grape pomace as "grape skin red". As safe natural food colorants, they boast abundant resources and offer both nutritional and pharmacological benefits, with strong demand in high-end food, health products, and natural cosmetics sectors.

Traditional anthocyanin purification from grape juice relies on the "sulfur dioxide color protection" process, which easily leads to excessive sulfur dioxide residues. This not only affects product safety and compliance but also restricts access to high-end markets. Additionally, the complex traditional process results in low target component yield, failing to meet industrial mass production needs.

A key provincial-level enterprise specializing in natural pigments and health product raw materials processes over 15,000 tons of grape-related raw materials annually. Previously, its anthocyanin purification from grape juice relied on traditional technology, suffering from sulfur dioxide residue issues that hindered market entry into the EU, Japan, South Korea, and other high-end markets, along with low target component yield.

After adopting BJ7505 Resin in 2024, the enterprise achieved full-process sulfur-free purification. The final product showed no detectable sulfur residues, anthocyanin purity increased to over 94%, and yield rose by 8% compared to previous levels. Furthermore, the resin is recyclable and regenerable, reducing consumable costs. The product successfully obtained international certifications, with high-end orders accounting for an additional 15% of total orders.