During cold storage, control yoghurts produced more whey (P < 0.05), varying from 4.2% to 5.1%, than passion fruit fiber or PFF yoghurts (0.0–0.8%), especially those co-fermented by L. acidophilus NCFM (P < 0.05). Water and oil holding capacities of PFF were 3.8 mL•g− 1 and 4.9 g•g− 1, respectively, which are in accordance to the findings of