Abstract
A method for lab scale production and isolation of chitosan from mycelia of Cunninghamella blakesleeana IFO 4443 mutant was developed. Mutant of Cunninghamella blakesleeana IFO 4443-10 obtained by W radiation was cultivated in 5L jar fermentor at 3$0^{\circ}C$ for 3days. The fungus were grown well at pH 4.5 Chitosan was readily extracted from mycelia walls with alkali treatment. The maximum yield of chitosan obtained was 1012mg/L and degree of deacetylation was 84.6%.
키토산을 생산하기 위하여 Cunninggamella blak-esleeana IFO 4443을 자외선조사하여 생성능이 우수한 Cunningmella blakesleeana IFO 4443-10의 변이주를 분리하였다. 본 변이주인 C. blakesleeana IFO 4443-10을 3$0^{\circ}C$에서 pH 4.5에서 3일간 발효하여 mycelia 발효액을 알칼리로 처리하여 chitosan을 얻었다. 이때 chitosan의 수율은 1012mg/l로 높았으며 탈아세틸화는 84.6% 이였다.