| Popis: |
Yoghurt was prepared with addition of 2, 4 and 6 % goji berry fruits with respect to yoghurt mass. From the data on the titratable and active acidity, it can be summarized that the addition of goji berry fruits did not exert effect on the dynamic of acidification and proper course of the lactic acid fermentation in the yoghurts obtained. At the end of the storage periods of the yoghurts containing or not containing goji berry fruits, the active acidity reached up to pH 4,1÷4,3 and the titratable acidity – up to 140÷ 44 oТ. It was found that the addition of dry goji berry fruits improves the syneresis and protects the product from stratification. The lowest syneresis values were observed for sample S3 - 4,1 cm3. The goji berry fruits did not affect the vital activity of the lactic acid bacteria. At the end of the storage period (14 days), the highest number of viable lactic acid bacteria was established in sample S2 - 3,6.108 CFU.g-2. This makes the yoghurt obtained beneficial and possessing certain effect on health. |
