Manufacture of stirred yoghurt fortified with PPE
Reconstituted skim milk (12% T.S) was heated to 90 C for 5 min and cooled to (40 C). The aqueous PPE of whole peel was added at the ratios of 5%, 10%, 15%, 20%, 25%, 30% and 35%, then 3% traditional starter culture was added and the mixtures were incubated at 45 C until the gel structure was formed. The gel was stirred and stored at refrigerator (6± 2 C) (Experimental I). The same experiment was done the same as obvious except that whereas PPE was added after inoculation of the mixtures (Experimental II).