FoodNavigator-Asia reports that Thailand’s MUST has launched a ready-to-drink protein smoothie made from chicken breast protein, delivering 60g of protein per bottle — significantly above the 15-25g range typical of most dairy/whey-based RTD protein beverages on the market.
For beverage R&D teams, that figure is more than a marketing number. It represents a substantially harder formulation problem. This article breaks down the technical considerations any team should work through before attempting a similarly high protein inclusion level.
Why 60g Protein Loading Is Difficult
As protein concentration in a beverage system rises, the risk of physical instability rises with it — sedimentation, phase separation, and partial heat-induced gelation during thermal processing all become more likely. These risks are amplified when the protein source is not conventional whey but an animal-tissue-derived isolate, which behaves differently under heat and pH stress.
Whey Protein vs. Animal Meat Protein Isolate
Whey protein isolate has been optimized for decades for RTD applications, offering good solubility across a wide pH range and comparatively good heat tolerance. Meat-derived protein isolates, such as those from chicken breast, tend to have more complex molecular structures and an isoelectric point that can fall within the typical pH range of RTD protein beverages (roughly 4.5-6.5), increasing aggregation risk if process conditions are not tightly controlled.
What to Test Before Scale-Up
- Solubility profile of the protein isolate at the formulation’s actual target pH — not just the pH stated on the technical data sheet.
- Protein behavior under shear during homogenization.
- Thermal aggregation onset temperature, to correctly set sterilization/pasteurization parameters.
Managing Thermal Stability in Retort or UHT Processing
Most shelf-stable RTD beverages require thermal processing — retort (121°C+) or UHT (135-150°C, short hold time). Both processes place significant thermal stress on protein structures. Higher protein loading increases the likelihood of cross-linking and heat-induced gelation compared to lower-loading systems. Formulators typically need to shift system pH away from the protein’s isoelectric point and may need buffering salts to maintain pH stability throughout processing and storage.
Hydrocolloid Selection for Viscosity and Phase Stability
Higher protein loading naturally increases system viscosity, but increased viscosity does not automatically mean increased stability — particularly when proteins tend to aggregate into larger particles that can still sediment even in a viscous matrix. Hydrocolloid selection — kappa or iota carrageenan for protein interaction, low-methoxyl pectin for calcium-fortified systems, or xanthan gum for yield-stress control — should be evaluated against three factors: the viscosity spec required, protein-polysaccharide compatibility, and behavior under actual process heat.
Recommended Practices
- Always trial hydrocolloid dosage at pilot scale before committing to production scale.
- Check compatibility between the hydrocolloid and any mineral fortification, since certain ions can interfere with gelation of specific hydrocolloid types.
- Run shelf-life samples at actual storage temperature, not accelerated conditions alone.
Flavor and Off-Note Masking
Meat-derived proteins typically carry stronger inherent aroma and aftertaste notes than dairy proteins. Flavor systems need to address both aroma and lingering aftertaste, usually through a combination of purpose-built flavor systems and compatible sweeteners or masking agents. Structured sensory evaluation early in development is as important as physical stability testing.
Shelf-Life and Packaging Considerations
Beyond physical and chemical stability, packaging choice — aseptic packaging versus retort pouch, for example — affects shelf-life for high-protein products, since oxygen transmission rate influences protein and lipid oxidation over the product’s storage life.
How DIC supports this
For teams working with hydrocolloids and stabilizer systems for high-protein beverages, raw material stability during storage is a factor that is often overlooked. DIC stores functional ingredients in an isolated pharma-grade warehouse zone, supported by VMI (Vendor Managed Inventory) programs, so R&D and procurement teams can plan trials and production runs continuously without lot-to-lot variation risk from poorly stored stock. Teams looking for technical data sheets or supply guidance on hydrocolloids and protein stabilizers can reach the DIC team through the contact form on our website.
