If you are testing spirulina in yogurt, treat it as a formulation change—not a plug-in nutrition claim. Start with a small, controlled pilot and check flavour, colour, texture, pH and separation. A 2026 study tested commercial and agglomerated Spirulina platensis powders in yogurt at 0.5–2.0% by weight. Those are study conditions, not a universal recipe or a validated direction for any supplier’s ingredient.
First decide which ingredient you mean
Whole green spirulina powder and blue phycocyanin-rich ingredients are different materials. They can produce different colours, tastes and processing behaviour. This guide is about whole spirulina biomass. If your brief is a bright blue dairy product, test the exact blue ingredient separately.
Keep the pilot easy to compare
Use one yogurt base as the control. Add spirulina to otherwise matched samples, recording the actual powder weight and addition point. Avoid changing culture, stabilizer, sweetener and mixing method at the same time; if the result changes, you want to know why.
The 2026 study compared commercial powder with an agglomerated material and found differences in viscosity and flow properties. Ingredient form and processing history can matter, even when two materials are both described as spirulina.
What should you measure?
Record colour before and after fermentation, pH, fermentation time, clumping, sediment, whey separation, viscosity, aroma, flavour and aftertaste. Keep sample temperature, serving size, lighting and tasting order consistent. A photo can help a team compare appearance, but it does not replace instrumental colour measurement when a specification requires it.
Don’t assume the study ratio will transfer
Results depend on the exact yogurt base, powder, process and storage. Milk protein, plant-based bases, acidity and mixing energy can change the outcome. Choose pilot levels from your application goal and supplier documentation, then confirm the selected formulation after the intended storage period.
Write a one-page brief with the base, target colour, process temperature, storage conditions and measurements. Ask for the current ingredient specification and lot documents. AimGrow lists a bulk spirulina powder product; contact the supplier to confirm current details and application fit.
The cited study used specific commercial and agglomerated ingredients. It does not establish performance for AimGrow powder or every yogurt formula.