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All Journal Jurnal Ilmu Pertanian Indonesia VALENSI agriTECH KOVALEN: Jurnal Riset Kimia Science and Technology Indonesia Indonesian Journal of Chemistry Jurnal Perikanan Universitas Gadjah Mada Indonesian Journal of Applied Research (IJAR) Makara Journal of Science Halal Studies and Society

Noviyan Darmawan

Department Of Chemistry, Bogor Agricultural University, Jl. Agatis, Kampus IPB Darmaga, Bogor 16680

Author-ID : 3957404

Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Social Sciences

Published : 18 Documents Claim Missing Document

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Profil Komponen Volatil Beberapa Jenis Satai Menggunakan Kromatografi Gas Dias Indrasti; Muhammad Faqih Mukhlisin; Noviyan Darmawan; Nancy Dewi Yuliana
Jurnal Ilmu Pertanian Indonesia Vol. 27 No. 2 (2022): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.27.2.199

Satay as Indonesian food is made from several pieces of meat stabbed with a bamboo stick and grilled. Satay has a unique aroma because of the diversity in total organic volatile contents. Differences in volatile compounds are also influenced by species breed and processing method. Volatilomics is a method used to ensure the authenticity of meat products through the detection, characterization, and quantification of all volatile metabolites in biological systems. This study aims to evaluate volatile profiles in beef, chicken, pork satay, and their mixtures. The volatile components of satay were extracted using the solid-phase micro extraction (SPME) method and analyzed using gas chromatography-mass spectrometry (GC-MS) instrument. Data were analyzed by multivariate principles component analysis (PCA). Beef, chicken, and pork satays were identified as having 104,134, and 112 volatile compounds, respectively. Nonanal was a volatile compound with the highest intensity in beef satay samples, benzaldehyde in chicken satay, and cyclohexanol in pork satay. Volatile components of satay with different types of meat showed good separation using the PCA model. Beef, chicken, and pork satays are grouped separately. Mixed-meat satay containing pork was grouped next to the pork satay. Volatilomic analysis identified a hexanal compound was potential to be used as a marker to distinguish between pork and other meat satays in halal authentication process. Keywords: beef, chicken, halal, pork, volatilomics

Analisis Termodinamika dan Kinetika Nanopartikel Karbon (C-Dot) dari Buah Durian Sebagai Inhibitor Korosi Tembaga: Thermodynamics and Kinetics Analysis of Carbon-Dots from Durian as Copper Corrosion Inhibitor Faradisa Anindita; Noviyan Darmawan; Zainal Alim Mas'ud
KOVALEN: Jurnal Riset Kimia Vol. 7 No. 3 (2021): Edisi Desember
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2021.v7.i3.15608

Corrosion is a physical interaction between the metal and its environment, which results in changes in the metal's properties due to chemical or electrochemical reactions. The corrosion rate can be reduced by adding a corrosion inhibitor. Uses of nanotechnology for corrosion prevention is one of the first technical because almost made structures rely on the stability of a 1–2 nm thick passive film which provides stability to the underlying material. Herein we report the thermodynamic and kinetic analysis of carbon-dots from Durian as inhibitor copper corrosion. To test the anticorrosive performance and analyze thermodynamic properties in its role as a corrosion inhibitor on copper using potentiodynamic polarization. The thermodynamic-kinetic parameters of corrosion obtained values of H‡ = 60.44 kJmol-1, ΔS‡ = -73.9 kJmol-1, and ΔG‡ = 82.83 kJmol-1, show that the attendance of C-dot as a corrosion inhibitor causes a non-spontaneous reaction rate to be proven by increasing spontaneity (ΔG‡). The value of activation energy samples was higher than the blank, indicates the presence of C-dot effective to reduce the rate of corrosion of the metal.

Synthesis of Fluorescence Carbon Nanoparticles from Ascorbic Acid Sri Sugiarti; Noviyan Darmawan
Indonesian Journal of Chemistry Vol 15, No 2 (2015)
Publisher : Universitas Gadjah Mada

Carbon nanoparticles (C-dot) are materials that belong to a class of 0-dimensional nanoparticles with a photoluminescence property. C-dot can be synthesized from a variety of organic acids through bottom-up synthetic methods or from other source of inorganic carbons through top-down synthetic methods. Herein, we report a simple and fast synthesis method for the formation of C-dot from ascorbic acid using microwave heating technique. The success of this synthesis was shown by visual analysis, UV-Vis spectroscopy, fluorescence spectroscopy, and transmission electron microscopy (TEM). Visual analysis showed an increased in fluorescence intensity with the addition of urea as a passivation agent. The maximum fluorescence emission of the C-dot was a blue green color at wavelength 500 nm, after the C-dot was excited at a wavelength of 400 nm. The TEM analysis showed that the synthesized C-dot had an average size of 18 nm. We also conducted a preliminary study on the synthesized C-dot as a heavy ion metal sensor and found selective identification of Cr metal.

Detection of Hg2+ Metal Ions Using Silver Nanoparticles Stabilized by Gelatin and Tween-20 Lilis Sulistiawaty; Sri Sugiarti; Noviyan Darmawan
Indonesian Journal of Chemistry Vol 15, No 1 (2015)
Publisher : Universitas Gadjah Mada

Silver nanoparticles were synthesized by reduction method using glucose as reducing agent for precursor AgNO3. This research was aimed at comparing the stability and performance of silver nanoparticles with stabilizer gelatin (Gelatin-AgNPs) and tween-20 (Tween-AgNPs) produced from the synthesis to the silver nanoparticles without stabilizer, and applying the Gelatin-AgNPs and Tween-AgNPs to detect heavy metal in water sample. The silver nanoparticles produced were characterized using UV-Vis spectrophotometer and Transmission Electron Microscopy (TEM). From measurement of UV-Vis spectrophotometer, the absorbance wavelength of silver nanoparticles (AgNPs) appeared in range 411 nm, Gelatin-AgNPs in 417 nm, and Tween-AgNPs in 420 nm. The identification using TEM showed the average size for each AgNPs, Gelatin-AgNPs, and Tween-AgNPs was 11.73, 9.68, and 17.54 nm, respectively. The result showed that Gelatin-AgNPs has better stability compared to Tween-AgNPs. The reaction of Gelatin-AgNPs and Tween-AgNPs with several ions showed color changes of Gelatin-AgNPs and Tween-AgNPs occurred only on addition to Hg2+ metal ions solution. Based on the experiment of Hg2+ metal ions determination this method has limit of detection of 0.45 mg/L for Gelatin-AgNPs and 0.13 mg/L for Tween-AgNPs.

Synthesis of TiO2/Carbon Nanoparticle (C-dot) Composites as Active Catalysts for Photodegradation of Persistent Organic Pollutant Dedri Syafei; Sri Sugiarti; Noviyan Darmawan; Mohammad Khotib
Indonesian Journal of Chemistry Vol 17, No 1 (2017)
Publisher : Universitas Gadjah Mada

TiO2/C-dot composites were synthesised by sol-gel method and investigated as catalysts for photocatalytic degradation of persistent organic pollutants (perchloroethylene, PCE). The composites photoluminescence properties was shown by visual analysis and the synthesis product was characterized by XRD, FTIR, fluorescence spectrophotometer, and UV-Vis spectrophotometer. Degradation of PCE 0.1% (v/v) in the aqueous phase was investigated under sunlight irradiation for 2 h. Photodegrade efficiency of PCE was determined by GC. Composites of TiO2/C-dot 2.5% (w/w) was succesfully to degrade PCE under sunlight irradiation and its photodegrade efficiency was up to 89.45%.

Karakteristik Fisik-Kimia Gelatin dari Kulit Ikan Patin, Ikan Nila, dan Ikan Tuna Mala Nurilmala; Muh Tazri Nasirullah; Tati Nurhayati; Noviyan Darmawan
Jurnal Perikanan Universitas Gadjah Mada Vol 23, No 1 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.59960

Gelatin merupakan produk hidrolisis kolagen yang memiliki sifat fungsional sehingga dapat digunakan di berbagai industri pangan dan non pangan. Karakteristik fisik-kimia gelatin dari berbagai jenis kulit ikan menjadi hal penting untuk diketahui karena dapat membuktikan kualitas gelatin yang dihasilkan sebagai pengganti kulit sapi dan babi. Penelitian ini bertujuan menentukan karakteristik fisik dan kimia gelatin yang berasal dari jenis kulit ikan yang berbeda sehingga dapat menghasilkan gelatin yang memenuhi standar. Gelatin dihidrolisis menggunakan asam sitrat 0,2% dari berbagai jenis kulit ikan, di antaranya kulit ikan patin (Pangasianodon hypophthalmus), kulit ikan nila (Oreochromis niloticus), dan kulit ikan tuna (Thunnus sp.). Rancangan percobaan dalam penelitian ini yaitu Rancangan Acak Lengkap (RAL) dan uji lanjut Duncan. Gelatin yang dihasilkan telah sesuai dengan standar GMIA 2019 dan SNI 06-3735-1995. Perbedaan jenis kulit ikan berpengaruh terhadap rendemen, kadar air, kadar abu, kekuatan gel, dan setting point gelatin yang dihasilkan (p≤0,05), namun tidak berpengaruh terhadap derajat keasaman (pH) dan viskositas gelatin (p>0,05). Perlakuan terbaik dari penelitian ini adalah gelatin dari kulit ikan patin dengan rendemen 18,11%, kadar air 6,43%, kadar abu 0,39%, viskositas 61,66 mps, pH 5,56, kekuatan gel 204,01 bloom, dan setting point 18,5°C.

Reaction Products of Crude Palm Oil-based Fatty Acids and Monoethanolamine as Corrosion Inhibitors of Carbon Steel Ali, Mohamad Makrus; Irawadi, Tun Tedja; Darmawan, Noviyan; Khotib, Mohammad; Mas’ud, Zainal Alim
Makara Journal of Science Vol. 23, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Herein we report the application of the reaction products of crude palm oil-based fatty acids and monoethanolamine as sustainable corrosion inhibitors in acidic environments for carbon steels. Reaction products were identified based on FTIR analysis as a mixture of 2-aminoethyl fatty esters and N-(2-hydroxyethyl) fatty amides. Corrosion inhibition effect of these compounds was evaluated by potentiodynamic polarization techniques in 0.5 M HCl. The mixture of fatty esters and fatty amides showed promising potential as an alternative corrosion inhibitor. Inhibition efficiency was found to be 80% at 80 ppm. Thermodynamic and kinetic parameters obtained from the tafel plot displayed an increase in activation energy with a higher inhibitor concentration that led to the decrease in the corrosion rate. Furthermore, physisorption interaction was found to be the main process of the inhibitor’s adsorption on metal surfaces and obeyed the adsorption model of the Langmuir isotherm.

Optimization of Silkworm Sericin Extraction Attacus atlas and Samia cynthia ricini Using Response Surface Methodology Yuni Cahya Endrawati; Dedy Duryadi Solihin; Ani Suryani Suryani; Noviyan Darmawan Darmawan; Irma Herawati Suparto; Bella Fitri Rahmantika
agriTECH Vol 43, No 1 (2023)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.71950

Silk fiber is an organic waste that can pollute the environment due to its solubility in processing wastewater. The extraction from wastewater was carried out to reduce environmental pollution and produce natural bioactive. Therefore, this research aims to produce an extraction method that maximizes the protein yield of Attacus atlas (A. atlas) and Samia cynthia ricini (S. ricini) sericin and analyze the characteristics. The method consists of two stages, the optimization of sericin protein extraction with Response Surface Methodology (RSM) and its characterization. The optimization resulted in the optimum extraction of A. atlas and S. ricini sericin at a concentration of 0.08 and 0.03 N NaOH, temperature of 130.52 °C and 113.20 °C, time of 71.71 and 33.78 minutes with a yield of 17.39±1.24% and 20.24±2.30%. The sericin protein had a molecular weight of 8.99 and 7.08 kDa in A. atlas and S. ricini. The extraction produces glycine, alanine, and tyrosin for A. atlas and glutamic acid, glycine, and alanine for S. ricini. Therefore, the sericin extraction formulation did not change the secondary structure protein, as evidenced by the FTIR results.

Carbon Dots-based Antifungal Coating Film Against Pathogens Colletotrichum sp. for Active Coating Application of Mango Safitri, Idayu; Sugiarti, Sri; Darmawan, Noviyan
Science and Technology Indonesia Vol. 9 No. 1 (2024): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.1.173-182

Mangos are one of horticultural products that are leading the Indonesian agricultural industry. Simple post-harvest handling leads to high damage. The most common causes is anthracnose disease caused by Colletotrichum sp. Therefore, it’s necessary to modify the existing methods in postharvest handling such as coating. Adding active agents such as carbon dot (CD) in coating material to prevent anthracnose from growing and shorten the shelf life. This study aims to investigate the applicability and antifungal properties of CD as a composite coating. CDs were synthesized using chitosan as the carbon source in a one-pot hydrothermal technique. The CDs have blue-emitting luminescence caused by the functional group at the surface of CD. The CDs were used to prepare chitosan/pectin (Chi/Pec)-based composite coatings. The addition of CDs increased the viscosity and density of composites, increased the blue-emitting luminescence, and showed potential antioxidant activity. The CDs and composite coatings exhibited high antifungal activity against Colletotrichum sp. by agar well diffusion method and were classified as very strong antifungal agents. The chitosan/pectin/CDs-coating effectively reduced the growth of black spots on the surface of mangos and increased the fruit shelf life of the fruit by 24 days. The CDs are evidently safe, affordable, and value-added nanomaterials that can be used to prepare active packaging applications.

Assessment of Commercial DNA Extraction Kits for Porcine Gelatin Detection Using RT-PCR and ddPCR Gina, Safira; Rahmagiarti, Cintera; Ummah, Isna Mustafiatul; Sumantri, Cece; Suparto, Irma Herawati; Darmawan, Noviyan
Science and Technology Indonesia Vol. 9 No. 3 (2024): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.3.605-612

Gelatin is extensively applied in various industries, including food, beverages, cosmetics, and pharmaceuticals. Although the determination of gelatin species is essential for religious, health, and consumer preference reasons, a standardized analysis method is absent. The challenge in identifying gelatin through DNA-based methods arises from the low DNA content and extensive DNA denaturation in the gelatin matrix. This study assessed the efficacy of two commercial DNA extraction kits, namely the Processed Food DNA Extraction (PF kit) and the DNeasy Mericon Food Kit (DM kit), for extracting DNA from porcine gelatin powder and commercial products derived from gelatin. Additionally, we evaluate the amplification of the extracted porcine DNA using real time polymerase chain reaction (RT-PCR) and droplet digital polymerase chain reaction (ddPCR) techniques. The PF extraction kit demonstrated successful DNA extraction from porcine gelatin powder and commercial samples of porcine gelatin-based candies with a higher concentration (32.24-286.07 ng/uL) and purity (A260/A280 ratio of 1.82-2.33) compared to the DM kit (3.95-7.30 ng/uL and an A260/A280 ratio of 1.29-2.45). RT-PCR and ddPCR analyses yielded positive results for porcine DNA from gelatin powder for both PF and DM kits, albeit with differing Cq values and copy numbers. The choice of DNA extraction kit significantly impacted the amplification results when analyzing commercial samples of porcine gelatin-based candies. Using RT-PCR, all samples yielded negative results with the DM kit, while the PF kit detected one positive result for porcine DNA. Improved outcomes were observed with more sensitive analysis methods such as ddPCR, where the DM kit identified one positive result for porcine DNA while the PF kit detected positive results for all tested candies.

Co-Authors Ali, Mohamad Makrus Ani Suryani Suryani Arrahman, Naufal Bella Fitri Rahmantika Cahyorini Kusumawardani Cece Sumantri Dedri Syafei Dedy Duryadi Solihin Dias Indrasti DIMAS ANDRIANTO Dini, Vianda Mayeri Dwiatmoko, Adid Adep Dwiyani, Dewa Ayu Made Safira Faradisa Anindita Firdaus, Dzikri Anfasa Gina, Safira Ida Ayu Putu Sri Widnyani Indriani, Mutiara Rachmina Irma Herawati Suparto Isalmi Aziz Jati, Andreas Ary Chrisna Khairani, Najwa Azka Lilis Sulistiawaty Lubis, Rifaldy Setiawan Mala Nurilmala Mas’ud, Zainal Alim Mohammad Khotib Muh Tazri Nasirullah Muhammad Faqih Mukhlisin Mukhlisin, Muhammad Faqih Murheza, Kevin Nancy Dewi Yuliana Pranata, Agy Wirabudi Purwantiningsih Sugita Rahmagiarti, Cintera Rudhatin, Fayca Safitri, Idayu Sanneh, Kally Sari , Intan Dias Sitompul, Dina Wardani Supratikno TATI NURHAYATI Tetty Kemala Tun Tedja Irawadi Ummah, Isna Mustafiatul Yuli Rahmawati Yuni Cahya Endrawati Yusuf Bramastya Apriliyanto Zainal Alim Mas'ud

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