인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2025.9
- 수록면
- 430 - 442 (13page)
- DOI
- 10.48022/mbl.2506.06009
이용수
초록· 키워드
Alkaline proteases have been substantially used in diverse industrial sectors due to their remarkable pH tolerance, thermal stability and ability to substitute harsh chemical processes. The persistent demand for protease enzymes with improved characteristics has led to search for alternative enzymes. The main objective of this research was to produce and characterize protease enzyme, and evaluate its potential industrial applications. An effective protease-producing bacterium was isolated from soil of tannery waste.
Enzyme activity was confirmed by the clear zone of casein hydrolysis on Skim Milk Agar Medium and identified as Bacillus thuringiensis using 16S rRNA sequencing. Optimization of cultural and physicochemical parameters, including incubation time, temperature, inoculum size, pH, and substrate, yielded maximal enzyme production under the following conditions: pH 9.0, temperature 37℃, incubation period of 36 h, agitation speed 150 rpm, and 4% inoculum (1.35 × 108 CFU/ml), resulting in a peak activity of 145.6 U/ml.
The enzyme showed highest activity at pH 10.0, and showed thermostability by maintaining maximum activity at 35-65℃. SDS-PAGE analysis revealed an apparent molecular mass of 45 kDa. The enzyme exhibited a Vmax of 173.41 Unit/mg with casein and a Km of 4.381 mg/ml, showing high catalytic performance as well as high substrate affinity. Finally, as part of the industrial application, the enzyme effectively dehaired goat and cow hides, removed blood stain from cotton, and hydrolyzed gelatin on X-ray films.
Collectively, these findings underscore the potential of alkaline protease as a sustainable biocatalyst for eco-friendly industrial applications and environmentally benign waste management.
#Alkaline proteases
#Bacillus thuringiensis
#optimization
#partial purification
#industrial applications
상세정보 수정요청해당 페이지 내 제목·저자·목차·페이지정보가 잘못된 경우 알려주세요!
목차
등록된 정보가 없습니다.