Milk-clotting test of the supernatants from different yeast cultures. 1: 5.0 ml milk+200.0 μl water
(control); 2: 5.0 ml milk+200.0 μl of supernatant from the culture of Y. lipolytica 22a-2; 3: 5.0 ml milk+
200.0 μl supernatant from the transfortant 43; 4: 5.0 ml milk+200.0 μl supernatant from the disruptant 3-13-
10