The effect of a range of saponins, commonly present in foods or dietary supplements, on the potential difference (PD) across the mucosa of the rat small intestine in vitro has been examined. Saponins from Gypsophila, guar, alfalfa, Quillaja, clover and liquorice together with glycoalkaloids from the
Herbal mixtures composed of blackberry leaf and natural sweeteners (dried apples, prunes, figs, raisins, apricots, carrot and sweet potato, stevia leaves and liquorice root) were developed. Their nutritive and bioactive profile, biological activity and sensory properties were determined. Formulated