HPLC Chromatogram of vitamin B6 of the mutants (full line) comparing with the standard solution of vitamin B6 (dashed line). A) The supernatant of culture broth of isolate 10-8 after 24 h growth at 50°C, B) isolate 10-94 after 24 h growth at 37°C, C) isolate 08-361 after 24 h growth at 37°C.