Antioxidant Solutions for the Rendering Industry

Rendering is the process of converting animal by-products from the meat and livestock industry into usable materials, playing a crucial role in resource utilization. The finished products from rendering include protein meals (such as poultry meal, meat and bone meal, blood meal, and feather meal) and oils and fats (such as duck fat, chicken fat, lard, and tallow).

Why Rendered Products Must Be Stabilized

1. Oxidation: Rendered products are highly susceptible to oxidation due to their exposure to air. Natural protection, such as tocopherols, is minimal or nonexistent.
2. Warm Storage: Rendered fat is often kept warm to remain in a liquid state, which further accelerates oxidation.
3. Metals: The presence of metals in meals and fats catalyzes oxidation.
4. Extended Storage: Protein meals are stored for months, necessitating effective preservation.

Traditional and Natural Shelf Life Solutions

• Traditional Antioxidants: These proven solutions include ingredients like TBHQ, BHA, BHT, ascorbyl palmitate, and propyl gallate, which enhance oxidative stability.
• Plant-Based Antioxidants: This natural alternative uses plant-based ingredients with high antioxidant activity, such as mixed tocopherols and rosemary extract, to extend shelf life.

Antioxidants in Rendered Products :

1.???? Synthetic Antioxidants:

·?????? BHA and BHT are commonly used individually or in combination.

·?????? In some EU cases, BHA is combined with propyl gallate.

·?????? Pre-cook and post-cook applications are common.

·?????? Final customers, such as pet food manufacturers, may specify the antioxidant product.

2.???? Natural Antioxidants:

·?????? Rosemary extract and mixed tocopherols are often combined.

·?????? Green tea and spearmint are included in some blends.

·?????? Post-cook application is preferred.

·?????? Customer preferences significantly influence antioxidant choices.

Antioxidant Application Strategies :

1.???? Pre-Cook:

·?????? Mostly involves synthetic antioxidants.

·?????? Protects animal by-products during processing.

·?????? Concerns arise when antioxidants migrate into fat during pressing.

·?????? Natural pet food manufacturers often avoid using this fat.

2.???? Post-Cook:

• For meals: First application immediately after pressing. Second application after the shaker screen before load-out/storage.
• For fat: Apply in storage tanks or before load-out

At Camlin Fine Sciences (CFS), our expertise, diverse product range, and commitment to quality make us a valuable partner for professionals in the rendering industry seeking effective antioxidant solutions. For further questions or additional information, please email us at [email protected] or visit - www.camlinfs.com