Hello, I want to make a synbiotic microbead which contains probiotic and prebiotic in gel matrix. Without extra nutrient, probiotic is expected to grow inside of microbeads by consuming the prebiotic. I have tested that before gelation, probiotic can grow in prebiotic/gel matrix solution, but after gelation, probiotic cannot grow inside of beads anymore.

I do not know why, and very appreciate if anyone can provide some suggestions. Thank you.

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