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All Journal HAYATI Journal of Biosciences IPTEK Journal of Proceedings Series Indonesian Journal of Chemistry Molluca Journal of Chemistry Education (MJoCE) Journal of Fibers and Polymer Composites Sewagati

Surya Rosa Putra

Institut Teknologi Sepuluh Nopember

Author-ID : 3183501

Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Engineering Materials Science & Nanotechnology Social Sciences

Published : 6 Documents Claim Missing Document

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Articles

Role of Fe2+-dependent Reaction in Biodecolorization of Methyl Orange by Brown-rot Fungus Fomitopsis pinicola Adi Setyo Purnomo; Asranudin; Nela Rachmawati; Hamdan Dwi Rizqi; Refdinal Nawfa; Surya Rosa Putra
HAYATI Journal of Biosciences Vol. 29 No. 2 (2022): March 2022
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.29.2.146-154

The involvement of Fenton reaction on biodegradation of methyl orange (MO) by brown-rot fungus Fomitopsis pinicola was investigated based on Fe2+-dependent reaction. The degradation of MO (final concentration 75 mg/L) was performed in mineral salt media with and without Fe2+ with incubation period at 0, 7, 14, 21, and 28 days. Degradation analysis was performed using UV-Vis Spectrophotometer and LC-TOF/MS. F. pinicola decolorized MO in a medium containing Fe2+ and a medium that lacked the mineral, at percentages of 89.47% and 80.08%, respectively. The optimum decolorization occurred after 28 days of incubation with the fungus on the presence of Fe2+, indicated that the presence of Fe2+ enhanced MO degradation with assumed to correlate with Fenton reaction. Two metabolites were detected through the LC-TOF/MS analysis, namely 4-(2-(4-(dimethyliminio)-2-hydroxycyclohexa-2,5-dien-1-ylidene) hydrazinyl) phenolate (m/z 258, RT: 1.28 min, compound 1) and 4-(2-(4-(dimethyliminio) cyclohexa-2,5-dien-1-ylidene) hydrazinyl) benzenesulfonate (m/z 391, RT: 2.70 min, compound 2). Compound 1 was a transformation product of hydroxylation and methylation, compound 2 was a product of dehydroxylation and desulfonation. This study indicated that the transformation of the metabolite structures was involved hydroxyl radical (OH.) and enzymatic mechanisms, which involved Fe2+-dependent reaction.

Effects of Acetic Anhydride toward Degree of Substitution on Acetylation Method of Sago Starch (Metroxylon sp) from Papua Yuliya Andriani Nanggewa; Adi Setyo Purnomo; Surya Rosa Putra
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Sago contains carbohydrates that are stored in the starch form. Starch is generally formed from two molecules of glucose polymer, namely amylose and amylopectin, which its composition varies for each type of starch [1]. The weakness of starch can be overcome through a modification of the functional properties of starch to expand sago starch. Chemical modification of starches can enlarge the range of certain starch physical properties of the parent starch [2] and enhance their use in a number of applications found in industrial processes and food manufacture. Chemical modification of starch can be performed by various methods such as acetylation. Generally, native starch has a low Degree of Substitution (DS) because of their limited degree or reaction on the granule surface. Increasing DS can be obtained by modification of native starch through acetylation reaction using few catalysts such as pyridine and NaOH. Several researchers have reported the effects of acetylation on many sort of starch sources such potato, corn, pea and cassava [3-5]. There are few studies about the effects of acetylation of starches with a wide range of amylose contents. We have carried out some work on effects of acetic anhydride concentration toward DS value of native and modified sago starch from Papua.

KARAKTERISASI BERDASARKAN UJI ASPEK MORFOLOGI DAN BIOKIMIA SERTA PENGARUH AERASI TERHADAP PERTUMBUHAN Zymomonas mobilis GALUR LIAR (ZM JPG) Teta Mumtaz Kurniasari; Surya Rosa Putra
Molluca Journal of Chemistry Education (MJoCE) Vol 1 No 2 (2011): Molluca Journal of Chemistry Education (MJoCE)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol1iss2pp129-141

Zymomonas mobilis is a facultative anaerobic bacteria that have the characteristics of a gram-negative rodshaped, oxidase test negative, positive catalase test, did not form indol and did not hydrolyze gelatin. Some other characteristics such as motility, formation of H2S, and the levels of tolerance to oxygen varies between strains result Z. mobilis. Z. mobilis ZM JPG collection ITS laboratory tested chemical and morphological aspects of the biochemical aspects. The test results stated that ZM JPG have the characteristics of a rod-shaped gramnegative, facultative anaerobic, form round colonies, colony edges intact, convek and white. JPG ZM are motile, can not grow on lactose and mannitol, glucose and sucrose can menfermentasi, negative oxidase test, catalase test positive, does not form H2S and do not form indol. ZM JPG able to grow on media with glucose concentration of 100 g / l. Lag phase lasted for 5 hours in both media aerated or not aerated. Slowed growth phase in a shorter aerated media that is 3 hours, while the media is not aerated lasts for 8 hours. Optimum growth is achieved on a 34-hour incubation in both media aerated or not aerated

Production by Lintnerization-Autoclaving and Physicochemical Characterization of Resistant Starch III from Sago Palm (Metroxylon sagu rottb) Wiwit Sri Werdi Pratiwi; Anil Kumar Anal; Surya Rosa Putra
Indonesian Journal of Chemistry Vol 15, No 3 (2015)
Publisher : Universitas Gadjah Mada

Indonesia is one of the biggest central distributions of sago starch. There are some characteristics of sago starch which make it difficult to use in variation of foods. In this study, resistant starch type III (RS3) was produced from sago starch by using lintnerization-autoclaving (LA). Physicochemical characterizations of RS3 were compared by native sago starch (NA), hydrolyzed starch by distilled water (DW) and lintnerized starch (L). Amylose content decreased after hydrolyzed by DW and L, but increasing by using LA. Protein and fat contents decreased after hydrolysis, but crude fiber content increasing, the highest value was obtained lintnerized-autoclaved starch. Lintnerized-autoclaved starch has more compact and rigid structure. The RVA viscosity, swelling power and water holding capacity values reduced after all treatments. Oil in water emulsions were also analyzed by mixture of RS3 and emulsifier (casein or SPI). Viscosities of emulsions from RS casein were lower than those of RS-SPI. Emulsion capacity and emulsion stability values were better gotten using RS-SPI than RS-casein. The highest of emulsion capacity was obtained 11.33%. For storage period, the lowest peroxide and anisidine values of mixture RS-emulsifier were resulted from 5% emulsifier + 5% RS + 5% fish oil.

Polyhydroxyalkanoates Production from Ralstonia Pickettii Bacteria: Structural and Mechanical Studies Asranudin Asranudin; Surya Rosa Putra; Adi Setyo Purnomo; Dalia Allouss; Holilah Holilah; Lisman Suryanegara; Alvin Romadhoni Putra Hidayat; Alvin Rahmad Widiyanto; Muchammad Tamyiz
Journal of Fibers and Polymer Composites Vol. 1 No. 2 (2022): Journal of Fibers and Polymer Composites
Publisher : Green Engineering Society

Bacterial Polyhydroxyalkanoates (PHAs) are a remarkably versatile category of biodegradable polymers with a variety of applications in the packaging, agricultural, biomedical, and pharmaceutical fields. In the present study, bacterial PHAs films are characterized by Fourier transform infrared (FTIR), Scanning electron microscope (SEM), Gas chromatography-mass spectroscopy (GC-MS), Differential scanning calorimetry (DSC), and Universal testing machine (UTM). It was found that almost 20% (w/w) of PHAs was produced from Ralstonia pickettii, and the five major types of the produced polymer were validated via FTIR analysis, i.e., 1046-1185 cm-1 (C-O stretching), 1723 cm-1 (C=O stretching), 2974-2926 cm-1 (CH3 and CH2 stretching) and 3450 cm-1 (OH stretching). The GC-MS chromatogram generated two main peaks, i.e., 2-butenoic acid methyl ester and 4-hexenoic acid methyl ester, at retention times of 4.62 min and 5.79 min, respectively. The main compounds of 2-butenoic acid methyl ester and 4-hexenoic acid methyl ester had percentage areas of 28% and 43%, respectively. Based GCMS analysis shows two monomer PHAs ie. 2-butenoic acid methyl ester and 4-hexenoic acid methyl ester, correspondingly. The blending of PHAs R. pickettii and PEG-400 positively decreases thermal properties and tensile strength and increases elongation at break.

Degradasi Limbah Zat Pewarna Sintetik Kerajinan Tenun Ikat di Desa Parengan, Kecamatan Maduran, Kabupaten Lamongan Menggunakan Reaktor Fotokatalitik TiO2 dengan Penambahan Panel Surya Adi Setyo Purnomo; Hendro Nurhadi; Muhammad Lukman Hakim; Refdinal Nawfa; Hamdan Dwi Rizqi; Surya Rosa Putra; Lea Kristina Anggraeni; Sri Fatmawati; Asranudin; Taufiq Rinda Alkas; Alya Awinatul Rohmah; Nourma Sulistyowati; Citra ‘Aaqilatul Fa’aidah; Laudy Nasya Yanuar; Diah Trisna Rahayu Lestari; Lavida Aisya Salvanora
Sewagati Vol 7 No 4 (2023)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v7i4.538

Industri tekstil merupakan salah satu sektor industri yang berkembang pesat di Indonesia. Tingginya hasil produksi tekstil ternyata belum diiringi dengan kemampuan pengolahan limbah pewarna yang tepat sehingga dapat memicu kerusakan lingkungan. Desa Parengan di Kab.Lamongan dikenal sebagai desa industri penghasil kain tenun ikat. Pembuangan limbah pewarna di desa tersebut masih dilakukan secara langsung ke badan Sungai Bengawan Solo. Hal tersebut berdampak negatif terhadap kelangsungan hidup biota sungai sehingga diperlukan solusi untuk penanganan dan pengolahan limbah. Tim Abmas Institut Teknologi Sepuluh Nopember telah membuat reaktor dekolorisasi berbasis panel surya yang terintegrasi dengan prinsip fotokatalitik dan adsorben superadsorpsi. Reaktor tersebut berisi adsorben arang aktif-silika-batuan mangan untuk menyerap produk degradasi fotokatalitik dan logam berat yang terikat pada limbah pewarna. Sistem tersebut menghilangkan dan menyerap limbah pewarna sehingga aman dibuang di lingkungan. Tim Abmas ITS telah menambahkan panel surya dan lampu UV pada reaktor diseminasi kepada UMKM tenun ikat di Desa Parengan, sehingga dapat memberikan dampak signifikan terhadap pengurangan limbah pewarna di Sungai Bengawan Solo. Selain itu, kegiatan ini dapat mengubah pola pikir warga desa untuk menjaga keamanan ekosistem lingkungan serta menggalakkan terciptanya desa peduli lingkungan.

Co-Authors Adi Setyo Purnomo Alvin Rahmad Widiyanto Alvin Romadhoni Putra Hidayat Alya Awinatul Rohmah Anil Kumar Anal Asranudin Asranudin Asranudin Asranudin Citra ‘Aaqilatul Fa’aidah Dalia Allouss Diah Trisna Rahayu Lestari Hamdan Dwi Rizqi Hendro Nurhadi Holilah Holilah Laudy Nasya Yanuar Lavida Aisya Salvanora Lea Kristina Anggraeni Lisman Suryanegara Muchammad Tamyiz Muhammad Lukman Hakim Nela Rachmawati Nourma Sulistyowati Refdinal Nawfa Sri Fatmawati Taufiq Rinda Alkas Teta Mumtaz Kurniasari Wiwit Sri Werdi Pratiwi Yuliya Andriani Nanggewa

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