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The study aims to optimize fermentation and spray-drying conditions for producing oat-based postbiotic powders.

June 19, 2026Applied SciencesOpen Access

Optimization of Fermentation and Spray-Drying Conditions for the Production of Oat-Based Postbiotic Powder

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Randomized trial investigates oat-based postbiotic powder production, suggesting optimized methods for industrial use.

The study aims to optimize fermentation and spray-drying conditions for producing oat-based postbiotic powders.
Investigated fermentation with Lacticaseibacillus paracasei CBA L74 in oat suspension at 37 °C for 24 h with pH control variations.
Spray-drying parameters were optimized including air flow, temperature, and atomization pressure.
Analyzed the effects of fermentation and drying on bacterial growth, lactic acid, and antioxidant properties.
Both pH conditions produced similar bacterial growth (~109 CFU/mL) and lactic acid (~9 g/L).
No significant differences observed in polyphenols, flavonoids, or antioxidant activity between pH conditions.
Optimal spray-drying conditions yielded 57.40% drying yield at 200 °C with 50 L/min air flow.

Passannanti et al. (2026) studied this question.

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