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All Journal VALENSI Jurnal Penelitian Saintek Reaktor JURNAL KIMIA SAINS DAN APLIKASI Chem Info Indonesian Journal of Mathematics and Natural Sciences Program Kreativitas Mahasiswa - Penelitian INDONESIAN JOURNAL OF PHARMACY Indonesian Journal of Chemical Science Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia Greensphere: Journal of Environmental Chemistry International Journal of Renewable Energy Development

Nor Basid Adiwibawa Prasetya

Department Of Chemistry, Faculty Of Science And Mathematics, Diponegoro University Jl. Prof. H. Soedarto SH Tembalang, Semarang 50275, Indonesia

Author-ID : 445972

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology

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PENGARUH WAKTU FERMENTASI TERHADAP AKTIVITAS Saccharomyces cerevisiae DALAM MENGHIDROLISIS ECENG GONDOK (Eichhornia crassipes) (Effect of fermentation time activity in Saccharomyces cerevisiae Hydrolysis of Water Hyacinth (Eichhornia crassipes)) Purbowatiningrum Ria Sarjono; Nies Suci Mulyani; Ina Noprastika; Ismiyarto Ismiyarto; Ngadiwiyana Ngadiwiyana; Nor Basid Adiwibowo Prasetya
Jurnal Penelitian Saintek Vol 26, No 2 (2021)
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jps.v26i2.43983

AbstrakSaccharomyces cerevisiae merupakan khamir yang berpotensi memproduksi enzim selulase yang mampu menghidrolisis ikatan β-1,4-glikosida pada rantai selulosa untuk menghasilkan glukosa. Salah satu sumber selulosa yang mudah ditemukan dan melimpah di alam adalah eceng gondok. Glukosa yang dihasilkan dari proses hidrolisis dapat dimanfaatkan untuk produksi sirup gula, asam organik dan bioetanol. Penelitian ini bertujuan untuk mendapatkan Saccharomyces cerevisiae yang diadaptasikan pada media fermentasi eceng gondok dan memperoleh data kadar gula pereduksi dari aktivitas Saccharomyces cerevisiae dalam menghidrolisis eceng gondok pada variasi pH dan waktu fermentasi. Proses yang terlebih dahulu dilakukan terhadap eceng gondok adalah delignifikasi dengan NaOH. Saccharomyces cerevisiae diadaptasikan dalam media modifikasi eceng gondok sebagai sumber karbon. Kurva pertumbuhan Saccharomyces cerevisiae dibuat dalam media modifikasi eceng gondok untuk mengetahui waktu optimum pertumbuhan Saccharomyces cerevisiae dalam menghasilkan enzim selulase, sehingga dapat mengetahui fase eksponensial dari Saccharomyces cerevisiae. Berdasarkan penelitian diperoleh hasil bahwa Saccharomyces cerevisiae dapat tumbuh pada media fermentasi eceng gondok dan Kadar gula pereduksi tertinggi dari aktivitas Saccharomyces cerevisiae dalam menghidrolisis eceng gondok pada pH optimum 5 dan waktu fermentasi optimum dalam menghasilkan gula pereduksi pada jam ke-48 sebesar 0,267 mg/L dari 0,3 gram eceng gondok kering.Kata kunci: Saccharomyces cerevisiae, hidrolisis selulosa, pH dan waktu fermentasi

Recovery of Cu (II) and Cr (VI) Metals from Electroplating Liquid Waste Using Polymer Inclusion Membrane (PIM) muhammad cholid djunaidi; Nor Basid Adiwibawa Prasetya; Nur Asih Setyowati; Khabibi Khabibi; Khoirun Nita Ulfia
Reaktor Volume 18 No. 2 June 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

Research on recovery of Cu (II) and Cr (VI) from electroplating liquid waste has been carried out using a Polymer Inclusion Membrane (PIM). PIM has a high stability to overcome the weakness of liquid membrane instability. The PIM membrane was placed between two phases namely the feed phase as a metal source of Cu (II) from electroplating waste with pH 3 and the receiving phase which is HNO3 solution with pH 1 and pH 4.4 in the feed phase and pH 6.3 in the receiving phase with NaCl 2 N for metal Cr (VI). Recovery efficiency is known by determining the concentration of Cu (II) and Cr (VI) in the feed and receiving phases using AAS, while the membrane characterization were carried out using FTIR, SEM and UV-vis spectroscopy. The resulting PIM membrane has properties of thin, clear and flexible. AAS data showed that the percentage of PIM transport with stirring for 24 hours performed the highest percentage of Cu (II) metal transport from feed phase of 83.41% and transport in the receiving phase of 72.56%. While the percentage of optimum Cr (VI) transport was 97.8% in the feed phase and 76.5% in the receiving phase. The results of membrane characterization using FTIR and UV spectroscopy showed that the PIM membrane was quite stable. While the results of SEM show that there were no pores in the membrane so that the transport occurs by diffusion through the intermediate of the carrier compound. Keywords: electroplating waste; liquid membrane; PIM

Potency of cinnamaldehyde of cinnamon oil as an antidiabetic compound Ngadiwiyana .; Ismiyarto .; Nor Basid A. Prasetya; Purbowatiningrum R. S.
Indonesian Journal of Pharmacy Vol 22 No 1, 2011
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Cafeic and cinnamic compounds have been reported to give an excellent performance as α-glucosidase inhibitor. Inhibition of α-glucosidase in the intestine of mammals are able to lower blood sugar levels of the carbohydrates metabolism so it can reduce postprandial hyperglycemia which can prevent chronic complications of Diabetes Mellitus (DM). Based on cafeic and cinnamic structures in terms of organic chemistry and economic considerations, it can be offered a very promising alternative to provide their derivative compounds of cafeic from cinnamon oil, which is cinnamaldehyde. Cinnamaldehyde can be isolated from cinnamon oil by addition of sodium bisulphite to provide salt compounds which are separated easily from the mixed system. The aldehyde compound can be obtained by acid addition. Structure elucidation of cinnamaldehyde was done by mean of an infra red spectrophotometer and a gas chromatography-mass spectroscopy. Activity test of anti-diabetic compounds was carried through the measurement of the concentration of minimum resistance against α-glucosidase activity. Cinnamaldehyde which is isolated from cinnamon oil was yellowish oil and cinnamaldehyde’s yield was up to 42.67%, and its purity was 99.8723%. Structure elucidation of cinnamaldehyde by mean of infra red spectrophotometer (FTIR) showed carbonyl vibration at 1676 cm-1, -C-H aldehyde at 2813.9 cm-1 and 2742.6 cm-1. From mass spectra, it can be known that cinnamaldehyde had M+ 132 with m/z of main fragmentation were 131, 103, 77, and 51. Inhibition activity of α-glucosidase test showed that inhibitory concentration at 50 ppm of cinnamaldehyde was 93.29%, and IC50 to the α-glucosidase was 27.97 ppm.Key words :cinnamon oil, cinnamaldehyde, anti-diabetic

PENGARUH ION LOGAM Cd(II) DAN pH LARUTAN TERHADAP EFEKTIVITAS FOTODEGRADASI ZAT WARNA REMAZOL BLACK B MENGGUNAKAN KATALIS TiO2 Nor Basid Adiwibawa Prasetya; Abdul Haris; Gunawan Gunawan
Molekul Vol 7, No 2 (2012)
Publisher : Universitas Jenderal Soedirman

Telah dilakukan penelitian pengaruh ion logam Cd(II) dan pH larutan terhadap efektivitas fotodegradasi zat warnaRemazol Black B menggunakan katalis TiO2. Serbuk TiO2 yang digunakan dikarakterisasi dengan menggunakan XRD. Proses fotokatalisis dilakukan secara simultan menggunakan katalis TiO2 dalam suatu reaktor tertutup yang dilengkapi dengan lampu UV-C. Kosentrasi Remazol Black B dianalisis menggunakan spektrofotometer UV-Vis dan AAS. Hasil karakterisasi serbuk TiO2 menunjukkan bahwa TiO2 yang digunakan mempunyai struktur kristal anatase dengan harga d yaitu 3,5; 2,42; 2,37; 2,32; 1,9; 1,7 dan mempunyai ukuran kristal 46,696 nm. Hasil penelitian menunjukkan bahwa penambahan ion logam Cd(II) meningkatkan efektivitas fotodegradasi Remazol Black B dan secara simultan mereduksi ion logam Cd(II) menjadi Cd(s). Pada proses fotodegradasi Remazol Black B 40 ppm dengan TiO2 50 mg, penambahan ion logam Cd(II) paling optimum adalah pada konsentrasi 4,5 ppm yang menghasilkan fotodegradasi Remazol Black B sebesar 85,83% dengan fotoreduksi ion Cd(II) sebesar 97,78%. Proses fotodegradasi Remazol Black B dengan adanya penambahan ion logam Cd(II) paling efektif adalah pada pH 4, dengan efektivitas fotodegradasi sebesar 97,62%.

Synthesis, Characterization, and Study of Proton Exchange Polymer Membrane Properties of Sulfonated Copolymer Eugenol-diallyl Phthalate Ngadiwiyana Ngadiwiyana; Nor Basid Adiwibawa Prasetya; Gunawan Gunawan; Tutuk Djoko Kusworo; Heru Susanto
Indonesian Journal of Chemistry Vol 21, No 1 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.55353

Synthesis biopolymer of sulfonated copolymer eugenol-diallyl phthalate (PEGDAF), its characterization, and study of proton exchange polymer membrane properties had been done. This synthesis was conducted by eugenol and diallyl phthalate reaction to form PEGDAF, which is sulfonated using sulfuric acid. In addition, the functional groups of the PEGDAF and its sulfonated form were analyzed using FT-IR. Furthermore, the polymer properties were determined by measuring values of sulfonation degree, cation exchange capacity, proton conductivity, and water uptake. FT-IR spectra showed that the vinyl group had been added to the process of PEGDAF formation, while spectra deconvolution was used to confirm the occurrence of sulfonation reaction. The sulfonation of PEGDAF in 2 h optimum reaction time produces a black solid with a melting point of 133 °C in 16.55% yield. The highest proton conductivity, cation exchange capacity (CEC), and water uptake were 8.334 × 10–6 S cm–1, 0.44 meq/g, and 73.0%, respectively.

The Effect of Temperature, Sulfonation, and PEG Addition on Physicochemical Characteristics of PVDF Membranes and Its Application on Hemodialysis Membrane Retno Ariadi Lusiana; Ayub Indra; Nor Basid Adiwibawa Prasetya; Nurwarrohman Andre Sasongko; Parsaoran Siahaan; Choiril Azmiyawati; Nanik Wijayanti; Anugrah Ricky Wijaya; Mohd Hafiz Dzarfan Othman
Indonesian Journal of Chemistry Vol 21, No 4 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.63740

Polyvinylidene fluoride (PVDF) membrane and its derivative have been investigated the permeation ability for creatinine and urea. The membrane was made by an inversion precipitation system in N,N-dimethyl acetamide (DMAc) and water as non-solvents. In this study, the modification of PVDF membrane permeability with PEG additives, CBT variations, and sulfonation was successfully carried out. The membrane solidification process was carried out on three variations of the coagulation bath temperature (CBT): 30, 45, and 60 °C. Eight types of membranes were characterized by using FT-IR and TGA/DSC, followed by the analysis of their porosity, hydrophilicity, water uptake, swelling degree, tensile strength, and permeability of creatinine and urea. The FT-IR spectra indicate that PVDF modification has been successfully carried out. The porosity, hydrophilicity, water uptake, and swelling degree values increase with the modification of functional groups. Furthermore, improvements in creatinine and urea permeability and clearances are achieved by increasing CBT and sulfonation in the PVDF/PEG membrane. The presence of sulfonate groups improves the membrane permeability through the interaction of intermolecular hydrogen with water and dialysate compounds. The existence of PEG as a porogen enhanced membrane porosity. Creatinine and urea clearance values increase from 0.29–0.58 and 6.38–20.63 mg/dL, respectively.

Ferrate(VI) Synthesis Using Fe(OH)3 from Waste Iron Electrolysis and Its Application for the Removal of Metal Ions and Anions in Water Gunawan Gunawan; Abdul Haris; Nor Basid Adiwibawa Prasetya; Eka Pratista; Azis Amrullah
Indonesian Journal of Chemistry Vol 21, No 6 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.64824

Ferrate(VI) salt is an effective oxidant and coagulant for water treatment and removal of metal ions. This study demonstrates a new approach to processing metal ions and anions in water by Fe(VI) through Fe(III) obtained from the electrolysis of waste iron transformer. The electrolysis was successfully carried out in the Na2SO4 electrolyte using waste iron and zinc plates as anode and cathode, respectively. Fe(III) electrolysis results through the characterization of FTIR and XRD indicate compliance with Fe(OH)3 standards. Synthesis of ferrate was carried out by adding Fe(III) from electrolysis with NaOCl in alkaline conditions. The formed ferrate solution shows a purple color with a typical maximum wavelength of 505 nm. Furthermore, the ferrate obtained is used to remove metal ions (Fe(III), Cu(II), Zn(II), Mg(II), Pb(II)) and anions (sulfate, nitrate, and carbonate) in water with pH variations. Ferrate treatment filtrate was analyzed using AAS for metal ions, while sulfate, nitrate, and carbonate anions used UV-Vis spectrophotometry, turbidimetry, and titration methods. The results showed that ferrate effectively eliminates metal ions and anions in water with optimum pH 6. The mechanism of heavy metal removal by ferrate(VI) can be explained by ionic bonding and adsorption.

Synthesis, Characterization of Ag2s from AgCl Waste of Argentometry Titration with Heating Temperature Variations and Its Application as a Temperature Sensor Based on Negative Temperature Coefficient (NTC) Gunawan Gunawan; Sarahtrinita Glikeria Like Megawati; Nor Basid Adiwibawa Prasetya; Roni Adi Wijaya
Jurnal Kimia Sains dan Aplikasi Vol 25, No 8 (2022): Volume 25 Issue 8 Year 2022
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.25.8.292-299

Synthesis of Ag2S from AgCl waste of argentometric titration with heating temperature variations as a temperature sensor has been done. This study aims to synthesize Ag2S and examine the effect of heating temperature on crystal quality and electrical characteristics as a temperature sensor based on the Negative Temperature Coefficient (NTC). Ag2S synthesis was carried out by precipitation in a water bath with various heating temperatures of 40°C, 60°C, and 80°C. The success of the synthesis was confirmed by X-Ray Diffraction (XRD) with a typical peak of 2θ from Ag2S standard at 29.07°, 31.60°, 36.97°, 37.81°, and the highest crystallinity was obtained at a heating temperature of 60°C. Meanwhile, UV-Vis Diffuse Reflectance Spectroscopy (DRS UV-Vis) showed a band gap corresponding to Ag2S (0.9-1.05 eV). Furthermore, the Ag2S powder was made into pellets and applied as a temperature sensor. Then the resistance value and the electrical characteristics of the resulting sensor were measured. The best resistance was obtained from Ag2S synthesized at a temperature of 60°C with constant (B) and sensitivity (α) values of 2974 K and −3.35%, respectively. This indicated that Ag2S had been successfully synthesized, and the best sensor quality was obtained from Ag2S heated at a temperature of 60°C.

Calcium Phosphate Cement Composed of Hydroxyapatite Modified Silica and Polyeugenol as a Bone Filler Material Tri Windarti; Nor Basid Adiwibawa Prasetya; Ngadiwiyana Ngadiwiyana; Limpat Nulandaya
Indonesian Journal of Chemistry Vol 23, No 2 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.80298

A composite of hydroxyapatite modified silica (HASiO2) and 10% (w/w) polyeugenol (PE) was synthesized to produce a calcium phosphate cement with antibacterial activity. The compatibility of the composite (HASiO2_PE) with bone filler requirements was determined due to its crystal, surface, antibacterial, and cytocompatibility properties. The results showed that compositing HASiO2 and PE did not affect HA's chemical dan crystal properties. The presence of PE changed HASiO2 morphology to be coarser and denser than before composited. PE tends to agglomerate but does not affect the hydrophilicity of HASiO2. The presence of PE increased the surface area and total pore volume but lowered the average pore size. Different from pure PE, the composite of HASiO2_PE that contains of 10% PE has higher antibacterial activity toward Escherichia coli than Staphylococcus aureus. The composite is biocompatible because the cytotoxicity test toward pre-osteoblast cells resulted in an IC50 of 2092 μg/mL. Thus, due to its chemical, surface, antibacterial, and cytocompatibility properties, the HASiO2_PE composite can be recommended as a bone filler material.

Bakteri Endofit F4 dari Daun Pepaya (Carica papaya L): Potensinya sebagai Penghasil Enzim Ekstraseluler Sarjono, Purbowatiningrum Ria; Ismiyarto, Ismiyarto; ngadiwiyana, Ngadiwiyana; Prasetya, Nor Basid Adiwibawa
Greensphere: Journal of Environmental Chemistry Vol 2, No 1 (2022): Volume 2 Issue 1 Tahun 2022
Publisher : Universitas Diponegoro

AbstractPapaya leaves are known to have antibacterial activity, so the endophytic bacteria on the papaya leaves are thought to have antibacterial activity. Previous studies have obtained 5 isolates of endophytic bacteria from papaya leaves, including F1, F2, F3, F4 and F5. Endophytic bacteria F1, F3, and F5 have known antibacterial activity, while endophytic bacteria F4 have not yet explored their activity in producing extracellular enzymes, so that in this study a qualitative test of extracellular enzymes was carried out on endophytic bacteria F4. The purpose of this study was to obtain confirmation of morphology, qualitative phytochemical data, and the ability to produce extracellular enzymes lipase, cellulase, protease and amylase from endophytic bacteria F4.The results obtained were F4 bacterial isolates white, round and smooth rounded edges which were gram positive with single cell morphology and the shape is bacillus (stems). F4 bacteria have the potential to contain amylase and protease extracellular enzymes.

Co-Authors Abdul Haris Andri Cahyo Kumoro Anugrah Ricky Wijaya Arif Sony Wibowo Asep Muhamad Samsudin, Asep Muhamad Asy’ari, Mukhammad Ayub Indra Azis Amrullah Choiril Azmiyawati Choirunnisa, Nur Fadilla Damar Nurwahyu Bima Didi Dwi Anggoro Drs. Abdul M.Si Haris Drs. Gunawan M.Si. Eka Pratista Enny Fachriyah Gunawan Gunawan Gunawan Gunawan Hacker, Viktor Hendra Dwipa Rifky Mahardika Heru Susanto Ina Noprastika Ismiyarto Ismitarto Ismiyarto Ismiyarto khabibi Khabibi Khoirun Nita Ulfia Limpat Nulandaya Liswinda Zafirah Rahmatia Mohd Hafiz Dzarfan Othman Muhammad Cholid Djunaidi Mumtazati, Qonita Nanik Wijayanti Nasher, Kharissa Ngadiwiyana M.Si. S.Si. Nies S. Mulyani Nies Suci Mulyani Niken Windi Saputri Nissa Nurfajrin Solihat Nur Asih Setyowati Nur Rokhati Nurwarrohman Andre Sasongko Pandelaki, Elmi Christi Julia Parsaoran Siahaan Pratama Jujur Wibawa Purbowatiningrum Ria Sarjono Retno Ariadi Lusiana Riska Marina Anggraini Roni Adi Wijaya Roschger, Michaela Salsabila, Salsabila Saputry, Agriccia Pangestica Sarahtrinita Glikeria Like Megawati Sri Wuning Tri Windarti Triwijayanti, Yunita Tutuk Djoko Kusworo Wahyudi, Dhiky Yosie Andriani Yulia Milarsih

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