Ahmed, S.A., Saleh, S.A. and Abdel-Fattah, A.F. 2007. Stabilization of Bacillus licheniformis ATCC 21415 Alkaline Protease by Immobilization and Modification.Australian J.Basic and Appl. Sci.1(3): 313-317.
Akhdiya, A. 2003.Isolasi Bakteri Penghasil Enzim Protease Alkalin Termostabil.Biologi Plasma Nutfah.9(2): 38-44.
Apriyantono, A., Fardiaz, D., Puspitasari, N.L., Sedarnawati dan Budiyanto, S. 1989.Analisis Pangan. Bogor: Pusat Antar Universitas Pangan dan Gizi, IPB.
Ardhana, M.M., Kusumawati, D. dan Radiati L.E. 1995. Pengaruh Penggunaan Yogurt Komersial dan Enzim Rennet Mucor meihei Terhadap Kualitas Keju Cottage. Jurnal Ilmu-Ilmu Peternakan 10: 24-29.
Baehaki, A.Suhartono, M.T., Palupi, N.S. dan Nurhayati, T.2008. Purifikasi dan Karakterisasi Protease dari Bakteri Patogen Pseudomonas aeruginosa.J. Teknol.Industri Pangan. 19 (1): 80-86.
Baehaki, A. Rinto dan Budiman, A. 2011.Isolasi dan Karakterisasi Protease dari Bakteri Tanah Rawa Indralaya,Sumatera Selatan.J. Teknol. Industri Pangan.
12(1):37-42.
Barton, H.A. and Luiszer, F. 2005. Microbial Metabolic Structure in A Sulfidic Cave Hot Spring: Potential Mechanisms of Biospeleogenesis. J. Cave and Karst Studies67(1): 28-38.
Beg, Q.K. and Gupta, R. 2003. Purification and Characterization of An Oxidation-Stable, Thiol-Dependent Serine Alkaline Protease from Bacillus mojavensis.Enzyme Microb Technol. 32: 294-304.
Brock, T.D. 1986. Thermophiles: General, Molecular and Applied Microbiology. Departement of Bacteriology 1550.Linden Drive University of Winconsin-Madison, Winconsin 53705 USA.Publ. Jhon Willey and Son.
Cai, C., Lou, B. and Zheng, X. 2008. Keratinase Production and Keratin Degradation by A Mutant Strain of Bacillus subtilis.J. Zhejiang Univ. Sci.
9(1): 60-67.
Capuccino, J.G. and Sherman, N. 1983.Microbiology a Laboratory Manual.4th Cortezi, M., Contiero, J., Lima, C.J.B., Lovaglio, R.B. and Monti, R.
amyloliquefaciens Protease: A New Strain. World J. Agricultural Sci.4(5): 648-656.
De Rossa, M., Gambacorta, A.and Gliozzi, A. 1986.Structure, Biosynthesis andPhysicochemichal Properties of Archaebacterial Lipids.Microbiol.Rev.50: 70-80.
Everly, C. and Alberto, J. 2000. Stressors, Stress and Survival: Overview. Front Bioscience. 5: 780–786.
Fardiaz, S. 1992. Mikrobiologi Pangan 1. Jakarta: Gramedia Pustaka Utama.
Fitri, S.G.S., Mubarak, N.R. dan Prawasti, S.T. 2005. Produksi dan Karakterisasi Protease Ekstraseluler Bacillus sp. BKU-10 yang Diisolasi dari Saluran Pencernaan Epinephelus tauvina. J. Mikrobiol. Indones. 10(1): 9-13.
Glover, T. and Mitchell, K. 2002.An Introduction to Biostatistics.New York: McGraw-Hill Companies, Inc.
Gupta, R., Gupta, K., Saxena, R.K and Khan, S. 1999. Bleach-Satble Alkalin Protease from Bacillus sp. J. Biotechnol. 1: 135-138.
Gupta, R. and Ramnani, P. 2006. Microbial Keratinases and Their Prospective Applications: An Overview. Appl. Microbiol. Biotechnol.70: 21-33.
Hawumba, J.F., Theron, J. and Brozel, V.S. 2002. Thermophilic Protease-Producing Geobacillus from Buranga Hot Springs in Western Uganda.Curr.Microbiol.45: 144-150.
Hidayat, N., Padaga, M.C. dan Suhartini, S. 2006. Mikrobiologi Industri. Yogyakarta: Andi Press.
Huang, G., Ying, T., Huo, P. and Jiang, J. 2006. Purification and Characterization of A Protease from Thermophilic bacillus strain HS08. Afr. J. Biotechnol.
5(24): 2433-2438.
Hoq, M.M., Siddiquee, K.A.Z., Kawasaki, H. and Seki, T. 2005. Keratinolytic Activity of Some Newly Isolated Bacillus Species. J. Bio. Sci. 5(2):193-200.
Johnvesly, B. and Naik, G.R. 2001. Studies on Production of Thermostable Alkaline Protease from Thermophilic and Alkaliphilic Bacillus sp. JB-99 in A Chemically Defined Medium. ProcessBiochem.37: 139-144.
Kamelia, R., Sindurmata, M. dan Dessy, N. 2005. Isolasi dan Karakterisasi Protease Intraselular Termostabil dari Bakteri Bacillus stearothermophillus RP1. Seminar Nasional MIPA 2005 Universitas Indonesia.
Khusniati, T. dan Nurmalia, I. 2010. Aktivitas protease Pseudomonas fluorescens dalamMendegradasi protein pada susu pasteurisasiSelama penyimpanan. Seminar Nasional Teknologi Peternakan dan Veteriner.
Korkmaz, H., Hur, H. and Dincer, S. 2004. Characterization of Alkaline Keratinase of Bacillus licheniformis strain HK-1 from Poultry Waste. Annals Microbiol.54(2): 201-211.
Kosim, M. dan Surya, R.P. 2010.Pengaruh Suhu pada Protease dari Bacillus subtilis.Fakultas MIPA ITS, Surabaya.
Kumar, S. and Nussinov, R.2001. How Do Thermophilic Proteins Deal with Heat.Cell Mol. Life Sci.58(9):1216-1233.
Lay, B.W. 1994. Analisa Mikroba di Laboratorium. Edisi Pertama. Cetakan Pertama. Jakarta: Raja Grafindo Persada.
Lee, J. M. 1992. Biochemical Engineering.Prentice Hall Inc. New Jersey. Lehninger, A. L. 1998. Biochemistry.New York : Academic Press.
Lubis, R. 2003. Penentuan Aktivitas Enzim Protease dari Ekstrak Jeroan Ikan Mas (Cyprinus carpio L) Terhadap Hidrolisa Bovin Serum Albumin.Skripsi Departemen Kimia FMIPA USU.
Lowry, O.H., Rosebrough, N.J., Farr, A.L. and Randall, R.J. 1951. Protein Measurement With the Folin Phenol Reagent. J. Biol. Chem. 193(1): 265-275.
Madigan, M.T. and Marrs, B.L., 1997. Extremophiles.Sci. Am.276(4):66–71
McGilvery, R.W. and Goldstein, G.W. 1996. Biokimia: Suatu Pendekatan Fungsional.Edisi ke-3. Surabaya: Airlangga University Press. Hlm. 301-310.
Naiola, E. dan Widhyastuti, N. 2007.Semi Purifikasi dan Karakterisasi Enzim Protease Bacillus sp. Berk.Penel.Hayati.13: 52-56.
Ningrum, D.A. 2008. Isolasi dan Uji Aktivitas Protease Termofilik dari Sumber Air Panas Tangkahan, Sumatera Utara.Skripsi Departemen Biologi FMIPA USU.
Noviyanti, T., Ardiningsih, P. dan Rahmalia, W. 2012.Pengaruh Temperatur Terhadap Aktivitas Enzim Proteasedari Daun Sansakng (Pycnarrhena cauliflora-diels).JKK.1(1): 31-34.
Palmer, T. 1981.Understanding Enzymes.England: Elli Horwood.
Patke, D. and Dey, S. 1998. Proteolytic Actvity from A Thermophilic Streptomyces megasporus Strain SDP4.Soc. Appl. Microbiol. 26: 171-174.
Poedjiadi, A. 1994. Dasar-Dasar Biokimia. Jakarta: UI Press. Hlm. 155-156.
Poernomo, A.T. dan Purwanto, D.A. 2003. Uji Aktivitas Crude Enzim proteolitik Bacillus subtilis FNCC 0059 Hasil Fermentasi Curah. Majalah Farmasi Airlangga. 3: 3.
Rao, M.B., Tansakale, A.M., Ghatge, M.S. and Desphande, V.V. 1998.Microbial Aspects of Microbial Proteases.Microbiol. Mol. Biol.Rev. 62(3): 597-635. Remigio, Z., William, M., Olle, H.andWilson, P. 2012. Isolation and
Characterization of A Protease-Producing Thermophilic Bacterium from An African Hot Spring. Afr. J. Biotechnol. 11(62).12571-12578.
Rudiana, A. 2003. Karakterisasi dan Amobilisasi Protease Mikroorganisme Termofilik Isolat CG-10 Yang Hidup Di Sumber Air Panas Cagar, Jawa Timur Dengan Matriks Pendukung. Disertasi Doktor, Surabaya: Universitas Airlangga.
Sadikin, M. 2002. Biokimia Enzim. Cetakan I. Jakarta: Widya Medika. Hlm. 32.
Saefuddin, A. 2013. Enzim Seifzadeh, S., Sajedi, R.H., Sariri, R., 2008.Isolation and Characterization of
Thermophilic Alkaline Proteases Resistant to Sodium Dodecyl Sulfate and Ethylene Diamine Tetraacetic Acid from Bacillus sp. GUS.Irian. J. Biotechnol. 6(4).214-221.
Singleton, R.and Amelunxen, R.E. 1973.Proteins from Thermophilic Microorganism.Bacteriol. Rev. 37 : 320–342.
Uhlig, H. 1998. Industrial Enzyme and Their Applications. J. Willey and Sons, New York.
Vermelho, A.B., Meirelles, M.N.L., Lopes, A., Petinate, S.D.G., Chaia, A.A. and Branquinha, M.H. 1996. Detection of Extracellular Proteases from Microorganism on Agar Plates.Mem. Inst. Oswaldo CruzRio di Janeiro
91(6): 755-760.
Widhyastuti, N. dan Dewi, R.M. 2001.Isolasi Bakteri Proteolitik dan Optimasi Produksi Protease.Laporan Teknik Proyek Inventarisasi dan Karakterisasi Sumberdaya Hayati. Pusat Penelitian Biologi. LIPI.
Widowati, S., Andriani, D., Riyanti, E.I., Raharto, P. dan Sukarno, L. 2005.Karakterisasi Fitase dari Bacillus coagulans. Prosiding Seminar Hasil Penelitian Rintisan dan Bioteknologi Tanaman Bogor.
