경기도 일대의 가금류 공장부근 토양로부터 단백질 분해활성이 높은 균주를 분리한 후 이것들 가운데 Keratinolytic protease 생산성이 우수한 균주는 KP-364를 선별하여 효소생산을 위한 최적 배양조건을 검토하였다. 선별된 KP-364 는 형태학적 생화학적 특성을 종합한 결과 Pseudomonas sp 로 동정되었으며 편의상 Pseudomonas sp. KP-364로 명명하였다. 효소생산을 위한 최적 배지조성은 Keratin 0.1% glucose 2.0% soybeam meal 0.5% NaNO3 0.5% KCI 0.2%이었고 초기 pH 6.5 배양온도 $37^{circ}C$, 48시간진탕 배양할때 효소생산이 가장 우수하였으며 이때의 효소의 역가는 1,270 U/ml/hr이었다.
A bacterial strain KP-364 producing extracellular keratinolytic protease was isolated from the soil of the poultry fac-tory. It was identified as Pseudomonas sp. based on its morphological and physiological characteristics, The optimal culture conditions for the production of keratinolytic protease by Pseudomonas sp. KP-364 were investigated. The composition of optimal medium for the keratinolytic protease was 2.0% glucose, 0.5% soybean meal. 0.5% $NaNO_3$ and 0.2% KCI Optimal initial pH for production of Keratinolytic protease production were 6.5 and $37^{circ}C$ respec- tively. The keratinolytic protease production reached a maximum of 1,270 U/ml/hr after 48 hours cultivation under the optimal culture conditions.
