Sumardi, Sumardi and Rochmah, Agustrina and Irawan, Bambang and Indah, Selfiana (2018) Pengaruh Paparan Medan Magnet 0,2 mT Pada Ion Logam Fe dan Zn dalam media pertumbuhan terhadap produksi protease Bacillus. Jurnal Ilmu Lingkungan, 16 (2). pp. 173-177. ISSN 1829-8907

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Abstract

The purpose of this study was to determine the effect of metal ions Fe and Zn were exposed to a magnetic field of 0.2 mT to the production of proteases in Bacillus sp. The metal ions used are Fe and Zn in the form of FeCl3 and ZnCl2 salts. The results showed that the culture medium containing metal ions Fe (a 0.01% w/v) were exposed by the magnetic field has a value of proteolytic index of 3.36 with 10 hour long incubation, and proteolysis index of 2.74 with 18 hour incubation time. Culture medium containing metal ions Fe (a 0.01% w/v) which are not being exposed to the magnetic field has a value of proteolytic index of 1.79 with 10-hour long incubation, and proteolysis index of 2.12 with 18 hour incubation time. While the culture medium containing metal ions Zn (0.005% w/v) either exposed or not exposed to the magnetic field causes the activity of Bacillus sp die. The solution of 0.01% Fe metal ion in liquid medium resulted in better protease production (0.06 U/ml) than production of proteases without exposure to magnetic fields (0.00 U/ml)

Item Type: Article
Subjects: Q Science > Q Science (General)
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Magister Ilmu Biologi
Depositing User: Sumardi Sumardi
Date Deposited: 08 Feb 2019 02:04
Last Modified: 08 Feb 2019 02:04
URI: http://repository.lppm.unila.ac.id/id/eprint/10685

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