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All Journal JURNAL SAINS DAN TEKNOLOGI INDONESIA JURNAL TEKNOLOGI LINGKUNGAN Microbiology Indonesia AL KAUNIYAH BERITA BIOLOGI Jurnal Ilmu Kefarmasian Indonesia
Trismilah Trismilah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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Journal : JURNAL SAINS DAN TEKNOLOGI INDONESIA

 1 
PELEPASAN TINTA PADA KERTAS NCR (NO CARBON REQUIRED) BEKAS DAN KERTAS UANG MENGGUNAKAN XILANASE Trismilah, Trismilah
Jurnal Sains dan Teknologi Indonesia Vol. 13 No. 3 (2011)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.977 KB) | DOI: 10.29122/jsti.v13i3.895

Abstract

Recycling paper is a solution to overcome the depletion of virgin pulp from trees and reduce the impact of global warming. Deinking paper is very important in the process of recycling paper. Xylanase application of research required for deinking outworn NCR paper and paper money. Deinking enzymatic is a clean technology and produces less waste than conventional deinking (chemicals). Xylanase AQ-1 which is a crude enzyme from Bacillus sp isolates AQ-1 can work well in the deinking process on the amount of enzyme addition of 0.2% in the pulp with the conditions of pH 7 and temperature of 50oC for 120 minutes. While the recombinant xylanase AQ-1 which is the result of genetic xylanase AQ-1 grown in E. coli can work well in the deinking process on the amount of enzyme addition of 0.1% in the pulp with the conditions of pH 7 and temperature of 50oC for 60 minutes. Xylanase AQ-1 increases the degree of whiteness of green NCR paper pulp from the control (40.1) into (53.9) and pulp paper moneyof the control (50.1) into (66.6). While AQ-1 recombinant xylanase increases the degree of whiteness of green NCR paper pulp from control ( 40.1) into (52.0) pulp and paper money from the control (50.1) into (63.4). Xylanase AQ-1 and recombinant xylanase AQ-1 potential in the green NCR paper deinking and paper deinking paper money, although the money still leaves some smudges on the results because of a special polymer coating that coats the waterproof paper money proficiency level.
MEMBRAN POLYETHERSULFONE DAN REGENERATED CELLULOSE UNTUK ULTRAFILTRASI Trismilah, Trismilah; Lutfi, Achmadin
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 2 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (119.349 KB) | DOI: 10.29122/jsti.v11i2.827

Abstract

Purification of xilanase result of fermentation from Bacillus stearothermophilus DSM 22 using membrane polyethersulfone and regenerated cellulose, each measuring 30 kD. Variations in pH 4.94, 5.80, 6.60, 7.40, 8.20. Analysis of enzyme activity, protein content and enzyme specific activity carried out on permeate and retentate. This study aimed to learn the best pH condition and the appropriate type of membrane process in the purification method xilanase with ultrafiltrasi. Research of resultsindicate that pH is very influential in the process ultrafiltration xilanase, each membrane has a different characteristic. Purification xilanase best use of ultrafiltration membrane polyethersulfone achieved in the pH 4.94 with a specific activity 13,888 U / mg in the permeate. Purification xilanase best ultrafiltration use of regenerated cellulose membrane at pH 8.20 achieved with specific activity 12397 U / mg in the retentate.
PEMANFAATAN BERBAGAI JENIS PATI SEBAGAI SUMBER KARBON UNTUK PRODUKSI a-AMILASE EKSTRASELULER Bacillus sp SW2 Trismilah, Trismilah; Wahyuntari, Budiasih
Jurnal Sains dan Teknologi Indonesia Vol. 11 No. 3 (2009)
Publisher : Badan Pengkajian dan Penerapan Teknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.763 KB) | DOI: 10.29122/jsti.v11i3.841

Abstract

Currently enzymes become a need of food and non-food industries. Alpha amylase (a-1,4 glucanohydrolase, EC 3.2.1.1) is an enzyme that hydrolyses starch into oligosaccharides and dextrin. The enzyme has been commercially available which mostly produced by Bacillus spp. The bacterium used in thisexperiment was Bacillus sp SW2, which was isolated from Composting Unit at Bumi Serpong Damai, Tangerang. The aim of this experiment was to find the most appropriate starch as an carbon source for enzyme production. The starches observed were tapioca, potato, and cornstarch at concentration of5%. The fermentation was conducted in shaking incubator, in 125 ml Erlenmeyer at 60°C, various pHs, and agitations. The pHs observed were 6, 7.5, 8 and 9 while the rates of agitation applied were 150, 200, and 250 rpm. The results showed that the highest enzyme activity was 20.99 Unit/ml, whichwas reached after 42 hours of fermentation using cornstarch, pH 8 and 200 rpm agitation.
Co-Authors Achmadin Lutfi Aisyah, Arina AR, Mahyudin ASTUTIATI NURHASANAH Budiasih Wahyuntari Budiasih Wahyuntari deden rosid waltam DYAH WULANSARI Suhendar, Dadang Sumaryanto Sumaryanto WIBOWO MANGUNWARDOYO