CytoGUARD OX Natural Antioxidants Demonstrate Effectiveness Extending Shelf Life and Maintaining Quality of Protein Powders

Whey protein powder and protein shake

September 7, 2023 - Fairfield, NJ - A&B Ingredients, a leader in providing unique, clean-label, and functional ingredient solutions to the food and beverage industry, announced a new application for CytoGUARD® OX natural antioxidants to extend shelf life and control oxidation in protein powders.

Protein is an essential component of a healthy diet, and meeting daily protein requirements is important for overall well-being. However, it may be challenging to obtain the necessary protein solely from whole food sources alone. In such cases, protein powder supplements can be a convenient and effective way to bridge the nutritional gap.

There has been a growing interest in protein oxidation due to its impact on protein conformation, functionality, and food quality. Many protein isolates and protein powders have residual fat content. Lipid oxidation can reduce the protein’s nutritional value and affect food functionality. Such oxidation changes may affect the proteins’ sensorial properties and their ability to form emulsions, gels, and bind water. To address oxidation in protein powders and extend the shelf life of protein products, A&B Ingredients offers CytoGUARD® OX-WST, a natural antioxidant.

CytoGUARD® OX-WST is a potent antioxidant derived from natural tea extract. This water-soluble antioxidant has been proven highly effective in controlling oxidation in various food products. In a recent study conducted by A&B Ingredients, the effectiveness of CytoGUARD® OX-WST was tested in whey protein isolate (WPI) and yeast protein. The stability of protein powders was assessed by measuring hexanal levels, a reliable indicator of lipid oxidation in proteins.

The results were clear and promising. Whey protein and yeast protein samples treated with 0.1% CytoGUARD® OX-WST exhibited significantly lower hexanal levels compared to the untreated control samples. This notable reduction in oxidation highlights the effectiveness of CytoGUARD® OX-WST at inhibiting oxidation in protein powders, ensuring product integrity and extending shelf life.


1. Level of Oxidation (Hexanal) in Whey Protein


2. Level of Oxidation (Hexanal) in Yeast Protein. Stored at 104 °F for 3 weeks.

A&B Ingredients is committed to delivering innovative solutions that enhance the quality and longevity of food products. CytoGUARD® OX-WST natural antioxidants are part of the company’s portfolio of natural preservation solutions, which include ingredients that provide food safety and shelf life extension. 

Since 2006, the company has focused on understanding the food quality and food formulation challenges and finding consumer-friendly and cost-effective solutions to maintain quality and extend the shelf life. CytoGUARD® line of functional, plant-based ingredients and natural plant extracts was designed to help food manufacturers meet safety and quality standards, extend shelf life, prevent food recalls, and reduce food waste.



A&B Ingredients provides natural, clean-label ingredient solutions to the food and beverage industry with a focus on health and nutrition, food safety, and quality. A&B Ingredient's portfolio includes plant-based proteins, textured vegetable proteins, natural and clean-label functional starches, pea and chicory root fiber, shelf-stable probiotics, low sodium sea salt, natural flavor enhancement, enzymes, natural antioxidants, antimicrobials, and yeast and mold inhibitors.

For more information about CytoGUARD® OX-WST and how it can benefit your protein products, don't hesitate to contact us at or call 973-227-1390.

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