Hello,

I am running a plant based yoghurt fermentation (10 - 50kg bucket/tank batch) but after 16h the pH drop is quite poor (stops at 5.4 - 5.8). The yoghurt base is UHT treated before and consists of pea & faba bean protein, oil, sucrose, dextrose and salt and the culture is S.thermophilus and L. delbrueckii. It works on a benchtop level (300g jars) and then pH drops to 4.4. What could be the reason for failed acidification in scale up? Could it be that the heat is not evenly distributed and the core does not get to the target temperature? Or perhaps the medium could be supplemented with some extra nutrients for ST and LB to enhance growth?

Thanks in advance for your help!

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