This may be explained due to the prebiotic effect of PO, as its contains dietary
fiber represented by non-digestible carbohydrates like chitin, band
a-glucans, xylans, mannans and galactans.
The ability of fiber to accelerate the acidification rate of milk in
yogurt manufacturing has also been reported. Studies have indicated that PO extracts assist probiotic
bacteria growth rates and the symbiotic effect of the extract might
be successful with some Lactobacillus strains