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All Journal HAYATI Journal of Biosciences VALENSI Jurnal Natur Indonesia Jurnal Kimia Riset Jurnal Zarah Science and Technology Indonesia Jurnal Farmasi Sains dan Komunitas ALCHEMY Jurnal Penelitian Kimia Molekul: Jurnal Ilmiah Kimia SAP (Susunan Artikel Pendidikan) JURNAL LENTERA BISNIS Jurnal Natural Darma Sabha Cendekia Molekul: Jurnal Ilmiah Kimia

AMIN FATONI

Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Jenderal Soedirman, Purwokerto, Indonesia

Author-ID : 264617

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Physics Social Sciences

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Frontmatter (Front Cover, Editorial Team, Preface and Table of Contents) Amin Fatoni
Molekul Vol 15, No 1 (2020)
Publisher : Universitas Jenderal Soedirman

Frontmatter (Front Cover, Editorial Team, Preface and Table of Contents)

Backmatter (Instruction for author and back cover) Amin Fatoni
Molekul Vol 16, No 2 (2021)
Publisher : Universitas Jenderal Soedirman

Backmatter (Instruction for author and back cover)

Backmatter (Instruction for author and back cover) Amin Fatoni
Molekul Vol 15, No 2 (2020)
Publisher : Universitas Jenderal Soedirman

Backmatter (Instruction for author and back cover) of the print version

Frontmatter (Front Cover, Editorial Team, Preface and Table of Contents) Amin Fatoni
Molekul Vol 14, No 2 (2019)
Publisher : Universitas Jenderal Soedirman

No Abstract

Penentuan Jenis dan Konsentrasi Pelarut untuk Isolasi Zat Warna Kulit Buah Manggis (Garcinia mangostana L) Amin Fatoni; Mando Hastuti; Dwi Agustina V; Suwandri Suwandri
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Natural pigment recently have interest to explore to reduce synthetic chemical effect for organism and environment. Mangostine (Garcinia mangostana L) is one of tropical fruit that have peel strong pigment, thus potent as new natural pigmen. Solvents including water, ethanol and methanol applied to extract mangostine peel pigment. The best solvent determined by measuring pigment filtrate using spectrophotometer. The highest absorbance data indicated the best solvent, i.e. more extract yielded by this solvent. The optimum concentration of the solvent for best extraction also investigated with the same procedure above, and finally the natural pigment obtained identified using paper chromatography. The best solvent investigated for extraction was ethanol at concentration 70%. The pigment extracted from mangostine peel proposed as pellargonidine 3-glycoside group of anthocyanin

PEMBUATAN DEKSTRIN DARI PATI UBI KAYU MENGGUNAKAN ENZIM AMILASE DARI AZOSPIRILLUM sp. JG3 DAN KARAKTERISASINYA Dian Riana Ningsih; Ari Asnani; Amin Fatoni
Molekul Vol 5, No 1 (2010)
Publisher : Universitas Jenderal Soedirman

Amylase enzyme is used to hydrolyze starch into simpler molecules such as dextrin. Amylase can be isolated fromAzospirillum sp. JG3 bacteria. The purpose of this study was to characterize dextrins from cassava starch (Manihot esculenta) is catalyzed by the enzyme amylase from Azospirillum sp. JG3 bacteria. Stages of this study are: determination of optimum substrat and to analyze the chemical and physical dextrins including moisture content, ash content, dexstrosa equivalent (DE) and the yield obtained. The result of this research showed that optimum condition hydrolysis starch of cassava that using amylase from Azospirillium sp. JG3 bacteria was acquired at substrate concentration 3% and the results of analysis obtained dextrins include yield of 96.67%, water content of 9.39%, 0.25% ash content and dexstrosa equivalent (DE) of 16.55.

Analisis Kebutuhan Pengembangan Bahan Ajar pada Konsep Interaksi Antarmolekul dan Printer Inkjet Nina Adriani; Inelda Yulita; Amin Fatoni; Dadan Hermawan; Ahmad Mudzakir
SAP (Susunan Artikel Pendidikan) Vol 6, No 1 (2021)
Publisher : Universitas Indraprasta PGRI Jakarta

The link between learning materials and the surrounding known as scientific literacy is an important thing for educators to do today. Scientific literacy is needed and it continues to be developed, especially in developing teaching materials. This research is conducted to know the needs of prospective teachers for developing teaching materials on intermolecular interactions and its connection with the concept of an inkjet printer. This analysis used an interview worksheet and conceptual questions given to chemistry learning students to discover the correlation between the material and the relationship with the existing context. The outcomes of the worksheet data were constructed using descriptive qualitative methods. The results stated that 97% of students already knew and were familiar with inkjet printers, but only 49% understood how the cognition of intermolecular interaction material in the circumstance of inkjet printers. 83% of students stated that there was a relationship between chemical materials and inkjet printers, but only 11% understood how the interactions between ink and paper were related in terms of chemical bonds. Students also stated that 89% required the use of teaching materials that linked the concept of interactions between molecules and their relationship with the context of an inkjet printer. Therefore, according to the conclusion of this research, teaching material is going to be developed that can explain the connection between the concepts of molecular interaction and the context of an inkjet printer to the prospective chemistry teachers.

Development of Urea Biosensor Based on Immobilized Urease in Chitosan Cryogel Zusfahair Zusfahair; Dian Riana Ningsih; Elok Dwi Putri Lestari; Amin Fatoni
Molekul Vol 14, No 1 (2019)
Publisher : Universitas Jenderal Soedirman

The development of biosensors using biological components has an important role in detecting the disease early because it has good selectivity and accuracy. In this study, a biosensor which made is a urea biosensor, based on immobilization urease in chitosan using adsorption techniques, to measure urea levels by colorimetric analysis with bromothymol blue (BTB) as an indicator. The purpose of this study was to find out how to measure urea levels using biosensors based on urease immobilization in chitosan and find out the biosensor performance including optimum enzymatic reaction time, linearity, the limit of detection, repetition, and determination of disrupting compounds. The study began with the making of an immobilization supporting matrix using chitosan which was made in the form of cryogel through an ionic gelation process which adsorbs the urease enzyme. Cryogel urease catalyzes the hydrolysis of urea into NH4+ and CO2-. The reaction product was added with the BTB indicator, and the color change formed was measured using a spectrophotometer. The results showed that the performance of urea biosensors was good enough for urea level detection systems by producing enzymatic reaction times at 15 minutes, linearity at 0.9951, detection limit at 0.018 mM, not affected by the addition of 0.05 mM ascorbic acid and 0.4 mM uric acid. This urea biosensor can be used up to 5 repetitions.

Backmatter (Instruction for author and back cover) Amin Fatoni
Molekul Vol 16, No 3 (2021)
Publisher : Universitas Jenderal Soedirman

Backmatter (Instruction for author and back cover)

Immobilization and Characterization of Bacillus Thuringiensis HCB6 Amylase in Calcium Alginate Matrix Zusfahair Zusfahair; Dian Riana Ningsih; Dwi Kartika; Amin Fatoni; Indah Permatawati
Molekul Vol 12, No 1 (2017)
Publisher : Universitas Jenderal Soedirman

Free enzyme in solution react with substrates to result in products which cannot be recovered for reuse. TheseÂ problemsÂ canÂ beÂ overcomeÂ to a certain extent by the use of enzyme immobilization method. Immobilized enzymes are more robust and more resistant to condition changes. More importantly, the heterogeneous immobilized enzyme systems allow an easy recovery of both enzymes and products, multiple re-uses of enzymes, and continuous operation of enzymatic processes. Entrapment of enzymes in Ca-alginate is one of the simplest methods of immobilization. The aim of this research was to obtain the optimum condition of the making of immobilized amylase beads using a Ca-alginate bead and to determine its characteristics. The optimization of immobilized amylase beads includes variation of sodium alginates and variations of enzyme contact time with CaCl2. The characterization of immobilized amylase includes determination of optimum substrate concentration, optimum pH, and optimum incubation time as well as amylase stability test. Amylase activity was determined by using dinitro salicylic (DNS) method. The results showed that the optimum immobilized amylase obtained at alginate concentrations of 5% (w/v), contact time of 60 minutes and immobilization efficiency of 67.5%. Furthermore, immobilized amylase showed optimum substrate concentration of 1.5-2.5% (w/v), optimum pH of 6, an optimum incubation time of 20 minutes with the activity of 179.8 U/mL. The KM value for free amylase and immobilized amylases were 0.3 mM and 0.12 mM respectively. Vmax value for free amylase and immobilized amylases were 105.3 U/mL and 10.1 U/mL respectively. Immobilized Amylase can be used up to six times with the residual activity of 52.7%.

Co-Authors A.A. Ketut Agung Cahyawan W Ahmad Aminudin AHMAD ENDANG ZAINAL HASAN Ahmad Mudzakir Anung Riapanitra Anung Riapanitra Ari Asnani Cacu Cacu Dadan Hermawan Dadan Hermawan Dadan Hermawan Dadan Hermawan, Dadan Darul Santri Pertiwi Dian Riana Ningsih Dian Riana Ningsih Dian Riana Ningsih Dian Riana Ningsih Dian Riana Ningsih Dian Riana Ningsih Dian Riana Ningsih DIAN RIANA NINGSIH Dian Riana Ningsih Dwi Agustina V Dwi Kartika Elok Dwi Putri Lestari ELY SETIAWAN Hartiwi Diastuti Hassan Y. Aboul-Enein HENDRI WASITO I MADE ARTIKA Indah Permatawati Khansa Salsabila Mala Nurilmala Mando Hastuti Mardiyah Kurniasih Mekar Dwi Anggraeni Mekar Dwi Anggraeni Mekar Dwi Anggraeni Mudasir Mudasir Nina Adriani Nina Adriani Ponco Iswanto Suwandri Suwandri Suwandri Suwandri Suyata Suyata Tien Setyaningtyas Uyi Sulaeman Vika Aprilia Puspitarini Vonia Febriana Hidayah Warsinah Warsinah Yulia Yulia Yulita, Inelda Zusfahair Zusfahair Zusfahair Zusfahair Zusfahair Zusfahair zusfahair zusfahair Zusfahair Zusfahair Zusfahair Zusfahair Zusfahair Zusfahair Zusfahair Zusfahair ZUSFAHAIR ZUSFAHAIR Zusfahair Zusfahair, Zusfahair

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