Monascus 균주의 적색색소의 최적 생산조건을 규명하기 위하여, Monascus anka IFO 4478과 IFO 6540의 영양요구성 돌연변이주인 M. anka, 4478-27-37 $(Thi^-,;Met^-),;4478-27-62;(Thi^-,;Arg^-)$와 M. anka, 6540-185-24 $(Pan^-,;Leu^-)$ 6540-185-72$(Arg^-)$의 균주를 이용하여 세포융합을 시도하였다. Protoplasts의 생성은 chitinase (10mg/ml), cellulase (5mg/ml) 및 ${eta}-glucuronidase;(5mg/ml)$의 혼합처리가 효과적이었고, 융합조건은 protoplasts를 30% PEG 6.000, $0.01M-CaCl_2$ 및 0.05M-glycine, pH 6.0으로 처리했을 때 융합빈도는 0.7%-0.85%이였다. 융합주 중에서 No. 14와 42의 색소 생산능이 가장 높았다.
This study aims at producing red pigment effectively by using protoplast fusion. Auxotrophic mutants of M. anka, $4478-27-37(Thi^-,;Met^-),;4478-27-62(Thi^-,;Arg^-)$ were derived from M. anka, 4478-27. M. anka, $6540-185-24;(Pan^-,;Leu^-)$ and M. anka, $6540-185-72;(Arg^-)$ were derived from M. anka, 6540-185. The optimal conditions of protoplast fromation were at time by using mixtures of chitinase (100mg/ml), cellulase (5mg/ml) and ${eta}-glucuronidase;(5mg/ml)$. The protoplast of those auxotrophic mutants were fused effectively, in the solution of 30% PEG $6,000,001M-CaCl_2$, 0.05M-glycine, pH 6.0. Fusion frequencies were 0.70%-0.85%. Fusants, No. 14 and 42 produced highest red pigment among them.
