Patent ID: 8642305

Claim:
A Bacillus cell selected from the group consisting of: (a) a mutant obtained from a Bacillus subtilis cell with registration number DSM 19467; and (b) a Bacillus subtilis cell with registration number DSM 19466 or a mutant thereof, wherein the mutant of (a) and the mutant of (b) exhibit (i) a vegetative cell growth point of 0.4 OD 630 after less than 18 hours and 19 hours in the presence of a 4 mM bile salt medium and a 6 mM bile salt medium, respectively, and (ii) phytase production in an amount of at least 1.25 times more than Bacillus cell DSM 19467 after incubating for 4 hours at 37° C. in a non-selective heart infusion broth, and each of the 4 mM bile salt media and the 6 mM bile salt media comprises non-selective veal infusion broth medium supplemented with a bile salt mixture comprising 60% taurodeoxycholate, 30% glycodeoxycholate and 10% deoxycholate.