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All Journal E-Bisnis : Jurnal Ilmiah Ekonomi dan Bisnis Jurnal Kimia Terapan Indonesia
Muhamad Zaenudin
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Materials Science & Nanotechnology

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AKTIVITAS ANTIBAKTERI EKSTRAK BIJI KAPULAGA (Amomum compactum Sol. Ex Maton) Dede Sukandar; Sandra Hermanto; Eka Rizki Amelia; Muhamad Zaenudin
Jurnal Kimia Terapan Indonesia Vol 17, No 2 (2015)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (648.526 KB) | DOI: 10.14203/jkti.v17i2.28

Abstract

Testing of antibacterial activity against ethyl acetate extract local cardamom seeds (Amomum compactum Sol. Ex Maton) has been performed. Extraction was carried out using the soxhlet method with methanol solvent and liquid-liquid partitioned with n-hexane, ethyl acetate and n-butanol solvent, antibacterial activity test was performed using the disc diffusion method, fractionation using column chromatography and characterization of active fractions using chromatography GCMS, UV-vis and FTIR spectroscopy. The test results showed that the antibacterial activity of ethyl acetate extract had the highest antibacterial activity against S. aureus and E. coli with inhibition zone diameter of respectively 15.15 ± 1.34 and 13.50 ± 0.70 mm at a concentration of 3200 mg/mL. Results of fractionation of the ethyl acetate fraction using column chromatography with a mobile phase of ethyl acetate: n-hexane (3: 2) yielded three fractions, namely F1 (14.6 mg), F2 (8.1 mg) and F3 (4.6 mg). Fraction 2 had the highest antibacterial activity against S. aureus with inhibition zone diameter of 12.34 ± 0.07 mm at a concentration of 800 ug/mL. The results of the characterization of the fraction 2 obtained using GCMS analysis of three antibacterial compounds suspected of 2.9-dihydroxy-1,8-cineol; 2,4-dihydroxy-1,8-cineol and 2,2-methylene bis [6- (1,1-dimethylethyl) -4-ethyl] phenol. The results of the F2 fraction characterization using UV-Vis spectroscopy showed the presence of group C = C conjugated chromophore at λmax 223 nm and are based on analysis using FTIR there -OH alcohol functional group (3372 cm-1), aliphatic -CH (2926 and 2854 cm-1) , C = C (1695 cm-1), aliphatic CH2 (1402 cm-1), CH3 aliphatic (1384 cm-1), and C-O (1203; 1126; 1091 and 1043 cm-1). Keywords: Antibacterial, S. aureus, E. coli, Amomum compactum Sol. Ex Maton, disk diffusion
Sistem Informasi Penggajian dengan Pencatatan Presensi Menggunakan Fingerprint Pada MTS Nu Jogoloyo Berbasis Multiuser Arsito Ari Kuncoro; Muhamad Zaenudin
E-Bisnis : Jurnal Ilmiah Ekonomi dan Bisnis Vol 14 No 1 (2021): Jurnal Ilmiah Ekonomi dan Bisnis
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/e-bisnis.v14i2.510

Abstract

Current technology has developed rapidly, computers are one of them. Almost all types of jobs require a computer to complete the task. In the field of computer education it is also very helpful, especially in terms of payroll services for teachers and employees who work as educators. MTs NU Jogoloyo Wonosalam Demak as an institution that has a large number of teachers and employees, besides that every day attendance officers are absent which results in difficulties in making payroll reports, especially recording and reporting still using manual methods so it takes longer time to record and deliver. report. In addition, sometimes there is a misunderstanding between attendance officers and teachers and employees regarding remuneration at the end of the month. In solving this payroll problem, the writer uses the Research and Development (R & D) method, while making applications can use high-level programming languages ​​such as Microsoft Visual Basic Ver 6.0. and SQL Server 2000 for data base management. Payroll applications are needed to simplify transactions and reporting on a monthly basis. With the use of this new payroll system software, it is hoped that it can produce quality information, improve service to employees and can assist in the decision-making process
Co-Authors Arsito Ari Kuncoro Dede Sukandar Eka Rizki Amelia Sandra Hermanto