Effect of Carrot-Juice on Exopolisaccharides and β-D Galactosidase Activity in Yogurt

Radiati, Lilik Eka
Jaya, Firman
Oktavia, Heldy

Animal Production : Indonesian Journal of Animal Production
Vol 18, No 3 (2016): September 2016

Carrot juice and milk  were  blended and fermented by  culture bacteria Streptococcus thermophillus  and Lactobacillus bulgaricus.  Carrot juice  affect significantly  on   lactic acid content   (1.09± 0.12% – 1.15± 0.01%),   pH value (3.80±0.06 – 4.17± 0.10),   viscosity  (133±2.30 cP–146±2.10cP),  β-carotene (0-173.19±1.02 µg/g), EPS (11.90 ±0.50 - 18.00 ±0.40 mg/100g),   β-D-galactosidase activity (2.27±0.30-192.40±0.48 µ/g) yogurt, but did not affect significantly on  bacteria number (9.0± 0.5 – 9.8±0.4 log CFU/g).    Carrot juice increased the yogurt culture activity with increasing acidifying, β-catotene, EPS and β-D-galactosidase, suggesting that yogurt could be fortified with carrot juice.