LactoSave: Stability in Acidic pH (3.8–4.5) and Thermal Processing for Acidified Dairy Beverages and Hybrid Systems

By: Fiber Citrus® Scientific Development Team

Introduction

Acidified dairy beverages are expanding rapidly, driven by demand for convenient protein delivery and fruit-based flavor profiles. Yet acidity and thermal processing create a technical bottleneck: many stabilizers lose performance at low pH and under pasteurization/UHT, leading to precipitation, viscosity collapse, and phase separation. LactoSave was developed to address this challenge through a citrus-based matrix engineered for stability in acidic dairy systems.

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1. The Technical Challenge

Acidified dairy beverages typically operate near pH 4.0, a region where protein stability is more sensitive and colloidal systems are more prone to breakdown. Under thermal stress, conventional gums may show altered hydration behavior, and proteins may destabilize, resulting in precipitation and physical instability. Manufacturers need solutions that remain functional across both pH stress and heat stress.

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2. The SAVE Solution via Acid-Compatible Citrus Matrix

LactoSave provides a citrus matrix stable between pH 3.8 – 4.5, supporting pasteurization, fermentation, and UHT without precipitating or losing viscosity. This stability enables application in acidified dairy drinks, protein yogurts, little swiss, and hybrid product concepts that combine dairy and fruit pulp.

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3. Mechanism of Action Inside the System

LactoSave supports stability through:

  • continuous-phase structuring that maintains viscosity under acidic conditions,
  • water retention that reduces phase mobility and separation tendencies,
  • matrix cohesion that helps reduce precipitation risk during processing and storage.

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4. Practical Results Observed

In a real acidified UHT dairy beverage (pH 4.0) containing fruit pulp, 0.6% LactoSave replaced carrageenan and CMC while delivering:

  • visual and physical stability for 90 days,
  • viscosity of 28–30 cP with excellent flow,
  • and a final label with only 6 ingredients.

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Conclusion

LactoSave enables reliable acidified dairy beverages by maintaining functionality across acidic pH and thermal processing. By combining matrix structuring, water retention, and stability under heat, it supports innovation with cleaner labels and stronger industrial predictability.

SAVE® — Advancing with the World: Sustainable Solutions, Ready Today.