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All Journal JURNAL KIMIA SAINS DAN APLIKASI Indonesian Journal of Chemistry Indonesian Journal of Natural Pigments Journal of Multidisciplinary Applied Natural Science Makara Journal of Science Molekul: Jurnal Ilmiah Kimia Bioactivities Bulletin of Chemical Reaction Engineering & Catalysis

Kurniawan, Yehezkiel Steven

Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Gadjah Mada

Author-ID : 749247

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Other

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Statistical Analysis for Evaluating Natural Yellow Coloring Agents from Peel of Local Fruits in Malang: Mangosteen, Honey Pineapple and Red Dragon Fruits Kurniawan, Yehezkiel Steven; Adhiwibawa, Marcelinus Alfasisurya Setya; Setiyono, Edi; Fahmi, Muhammad Riza Ghulam; Lintang, Hendrik Oktendy
Indonesian Journal of Natural Pigments Vol 1 No 2 (2019): Agustus 2019
Publisher : Ma Chung Research Center for Photosynthetic Pigments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/ijnp.2019.01.2.49

In the present work, a comprehensive statistical analysis was performed to evaluate the potential application of peel of local fruits from Malang, i.e. mangosteen, honey pineapple and red dragon fruits for natural yellow coloring agents. The yellow pigments from those fruit peels were extracted through a simple maceration method using distilled water, acetone and ethanol as the solvents. The CIE color space of the extracts was measured to obtain L*, a* and b* values. The obtained data were further analyzed using Principal Component Analysis (PCA), Multivariate Analysis of Variance (MANOVA) and Duncan Test to determine the most potent natural yellow coloring agent. All the extracts were appeared as mild to strong yellow liquid except for acetone extract for the peel of red dragon fruit extracts. From the CIE color space and PCA analysis, either ethanolic or acetone extracts of mangosteen appears as a strong yellow liquid and they are statistically not different. Interestingly, the MANOVA and Duncan test results are able to distinguish that the ethanolic extract of mangosteensâ€™ peel as the best candidate for natural yellow coloring agents because of its lowest L* and also highest b* variable values.

Selection of Maceration Solvent for Natural Pigment Extraction from Red Fruit (Pandanus conoideus Lam) Purnomo, Tantyo Ardy Bintoro; Kurniawan, Yehezkiel Steven; Kesuma, Ruth Febriana; Yuliati, Leny
Indonesian Journal of Natural Pigments Vol 2 No 1 (2020): February 2020
Publisher : Ma Chung Research Center for Photosynthetic Pigments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/ijnp.2020.02.1.8

Red fruit (Pandanus conoideus Lam) is rich with red-orange natural pigments, such as Î²-carotene. In this work, the solvent selection was investigated to extract the Î²-carotene from the red fruit via a simple maceration technique. Three types of solvents were used in the maceration, which were distilled water, ethanol, and acetone. The obtained extracts were characterized using spectrophotometer ultraviolet-visible (UV-visible), Fourier transform infrared (FTIR) and spectrofluorometer. The different solvents gave different spectroscopic information, suggesting that the solvent selection influenced the type of the extracted compounds. Among the examined solvents, acetone was found to be the most effective one to extract the Î²-carotene. The presence of the Î²-carotene pigment in acetone extract was confirmed by the appearance of the absorption peak at 476 nm on its UV-visible spectrum, while from its FTIR spectrum, the C-H sp3 functional group of Î²-carotene was found at 2924 and 2854 cm-1. In addition, the emission peak of Î²-carotene was found at 394 and 561 nm. This study confirmed that acetone performed as a better maceration solvent for Î²-carotene as compared to the distilled water and ethanol, which would be strongly related to the non-polar property of the acetone.

Spectroscopy Study of Honey Pineapple Peels Extracted in Different Solvents Kurniawan, Yehezkiel Steven; Setiyono, Edi; Adhiwibawa, Marcelinus Alfasisurya Setya; Priyangga, Krisfian Tata Aneka; Yuliati, Leny
Indonesian Journal of Natural Pigments Vol 3 No 1 (2021): February 2021
Publisher : Ma Chung Research Center for Photosynthetic Pigments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33479/ijnp.2021.03.1.32-35

In the present work, we investigated the extract of honey pineapple peels in distilled water, ethanol, and acetone solvents. The spectroscopy study of each extract was performed using a Fourier transform infrared (FTIR) spectrometer, an ultraviolet-visible (UV-Vis) spectrophotometer, and a spectrofluorometer. The FTIR spectrum of the distilled water extract indicated that the distilled water extract may contain alcohol or carboxylic acid compounds. Meanwhile, the ethanolic extract may contain alcohol or carboxylic acid, or ether compounds. On the other hand, the acetone extract may contain alcohol or ether or aromatic or aliphatic compounds. The UV-Vis spectrum of the honey pineapple peels extracted in the distilled water, ethanol, and acetone showed a broad absorption signal at UV region (< 300 nm), four absorption signals at UV region (232-368 nm), and four absorption signals at UV region (231-368 nm) with a weak absorption signal at the visible region at 559 nm, respectively. The distilled water and acetone extracts gave fluorescence signals, however, the ethanolic extract showed no fluorescence intensity. From the FTIR, UV-Vis, and fluorescence spectra characterization, the extracted natural pigments from the honey pineapple peels in distilled water, ethanol, and acetone solvents were identified. The distilled water extract may contain polar flavonoid or steroid compounds while the ethanolic extract may contain polar carotenoid pigments. On the other hand, the acetone extract may contain carotenoid and chlorophyll pigments as shown by an emission signal at 670 nm.

Green Chemistry Influences in Organic Synthesis : a Review Yehezkiel Steven Kurniawan; Krisfian Tata Aneka Priyangga; Philip Anggo Krisbiantoro; Arif Cahyo Imawan
Journal of Multidisciplinary Applied Natural Science Vol. 1 No. 1 (2021): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.v1i1.2

Environmental pollution and global warming cause serious problems in human life. Since the demand for our human daily appliances had been increased by years, the organic chemical-based industries response that demand increment by increasing their production process. Because of that, the environmental pollution becomes worse and worse. Green chemistry thus was introduced to influence the chemical industries to strive for better environmental sustainability. Over 20 years, green chemistry principles have to influence the organic chemistry field especially as many researchers have put their attention on that field of research. So far, synthesis process involving organic compounds has been considered on waste prevention, safer solvents, design for high energy efficiency, and usage of renewable feedstocks. This review comprehensively discusses in brief about the implementation of green chemistry principle and their applications in the synthesis process of organic compounds.

Efficient and Low-Cost Removal of Methylene Blue using Activated Natural Kaolinite Material Christyowati Primi Sagita; Limpat Nulandaya; Yehezkiel Steven Kurniawan
Journal of Multidisciplinary Applied Natural Science Vol. 1 No. 2 (2021): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.v1i2.80

Clays are low-price and very useful material for water treatment purpose. In this work, we reported the application of activated natural kaolinite material which obtained from Wediombo beach, Yogyakarta for methylene blue adsorption. The natural kaolinite material was activated under an acidic condition to obtain the activated kaolinite material. The activated kaolinite material was characterized using Fourier transform infrared, X-ray diffraction, scanning electron microscope, and surface analysis. From the adsorption experiment, the activated kaolinite material gave moderate adsorption percentages for methylene blue. The adsorption kinetics followed the Ho and McKay kinetic model while the adsorption isotherm followed Langmuir model. The qmax value for methylene blue adsorption using activated natural kaolinite material was at a moderate level (3.40 mg g-1). The plausible adsorption mechanism of methylene blue on the surface of activated kaolinite material happened through hydrogen bondings and/or electrostatic interactions. These findings are important for a wastewater treatment using a low-cost adsorbent material.

A Review on Calixarene Fluorescent Chemosensor Agents for Various Analytes Krisfian Tata Aneka Priyangga; Yehezkiel Steven Kurniawan; Keisuke Ohto; Jumina Jumina
Journal of Multidisciplinary Applied Natural Science Vol. 2 No. 1 (2022): Journal of Multidisciplinary Applied Natural Science
Publisher : Pandawa Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47352/jmans.2774-3047.101

Calixarenes are well-known supramolecular host molecules with versatile applications. Over the past decades, hundreds of selective and sensitive detections of several analytes have been reported by employing calixarenes as the chemosensor agent. The detection and quantification of metal ions and anions are crucial as heavy metal ions are harmful to living organisms, while monitoring anions is pivotal in the environmental samples. On the other hand, detecting and quantifying biomolecules and neutral molecules are critical due to their irreplaceable role in human health. In this review, we summarized the application of calixarenes as the supramolecular chemosensor agent for detecting metal ions, anions, biomolecules, and neutral molecules through fluorescent spectroscopy to give brief information on the design and development of the chemosensor field. This review updates the world with the application of calixarene derivatives as fluorescent chemosensors and challenges researchers to design and develop better chemosensor agents in the future.

Synthesis of 1,4-Dioxaspiro[4.4] and 1,4-Dioxaspiro[4.5] Novel Compounds from Oleic Acid as Potential Biolubricant Yehezkiel Steven Kurniawan; Yudha Ramanda; Kevin Thomas; Hendra Hendra; Tutik Dwi Wahyuningsih
Indonesian Journal of Chemistry Vol 17, No 2 (2017)
Publisher : Universitas Gadjah Mada

Two 1,4-dioxaspiro novel compounds which derivated from methyl 9,10-dihydroxyoctadecanoate (MDHO) with cyclopentanone and cyclohexanone had been synthesized by a sonochemical method in the presence of montmorillonite KSF catalyst. The MDHO compound had been prepared from 9,10-dihydroxyoctadecanoic acid (DHOA) and methanol. Meanwhile, DHOA was synthesized by hydroxylation of oleic acid with the solution of 1% KMnO4 under basic condition. The structures of the products were confirmed by FTIR, GC-MS, 1H-NMR, and 13C-NMR spectrometers. Hydroxylation reaction of oleic acid gave DHOA as a white solid powder in 46.52% yield (m.p. 131-132 °C). On the other side, esterification reaction via sonochemical method between DHOA and methanol gave MDHO as a white powder in 93.80% yield (m.p. 80-81 °C). The use of cyclopentanone in 45 min sonochemical method gave methyl 8-(3-octyl-1,4-dioxaspiro[4.4]nonan-2-yl)octanoate as a yellow viscous liquid in 50.51% yield. The other compound, methyl 8-(3-octyl-1,4-dioxaspiro[4.5]decan-2-yl)octanoate as yellow viscous liquid had been synthesized by similar method with cyclohexanone via the sonochemical method in 45.12% yield. From physicochemical properties, i.e. density, total acid number, total base number, and iodine value, gave the conclusion that these novel compounds are potential biolubricant candidates to be developed.

Synthesis and Kinetic Study of the Urea Controlled Release Composite Material: Sodium Lignosulfonate from Isolation of Wood Sawdust-Sodium Alginate-Tapioca Arif Cahyo Imawan; Yehezkiel Steven Kurniawan; Muhammad Fernadi Lukman; Jumina Jumina; Triyono Triyono; Dwi Siswanta
Indonesian Journal of Chemistry Vol 18, No 1 (2018)
Publisher : Universitas Gadjah Mada

A synthesis and kinetic study of the urea controlled-release composite material based on isolated Na-lignosulfonate, Na-alginate and tapioca was carried out. This experiment’s aims were to isolate Na-lignosulfonate from wood sawdust and to applicate this isolated Na-lignosulfonate, along with tapioca and Na-alginate as urea control release composite material. A kinetic study of urea released from the composite materials was also conducted. Na-lignosulfonate was isolated by Kraft lignin method to give a brown solid yield of 16.92% and was characterized by FT-IR spectrophotometer and SEM-EDX. The composite materials were synthesized by blending urea as the active compound with composite material as the carrier compound. Three types of material were prepared: complete material (A), low-concentration Na-lignosulfonate material (B) and material without tapioca (C). The composite material had a spherical form with 0.79 mm radius and 2.16 mm swollen radius. Urea content inside material was 40.425 mg urea/g material. The urea diffusivity coefficient for material A, B, and C were 7.27 x 10–6; 15.50 x 10–6 and 0.94 x 10–6 m2 h–1, respectively. Modelling analysis showed the experiment obeyed around only 15% of the Korsmeyer–Peppas model, but there was good correlation (80%) with the unsteady-state diffusion model.

Separation of Pb(II) Ion with Tetraacetic Acid Derivative of Calix[4]arene by Using Droplet-based Microreactor System Yehezkiel Steven Kurniawan; Mizuki Ryu; Ramachandra Rao Sathuluri; Wataru Iwasaki; Shintaro Morisada; Hidetaka Kawakita; Keisuke Ohto; Masatoshi Maeki; Masaya Miyazaki; Jumina Jumina
Indonesian Journal of Chemistry Vol 19, No 2 (2019)
Publisher : Universitas Gadjah Mada

In this study, the microreactor system was investigated and compared with the batch-wise system as rapid and effective extractive Pb(II) separation over Fe(III), Cu(II) and Zn(II) with tetraacetic acid calix[4]arene. By using a microreactor system, the Pb(II) extraction percentages reached the maximum of 73, 89 and 100% in 8 sec residence time at equilibrium pH of 2.00, 2.25 and 2.50, respectively. The stripping percentage was 92% at 8 sec residence time by using a microreactor system with 2.0 M HNO3 as a stripping reagent. Complete separation of Pb(II) over Fe(III), Cu(II) and Zn(II) ions with the tetraacetic acid calix[4]arene in a competitive metal system was achieved at pH 2.00. However, the batch system required 24 h to reach the equilibrium for both extraction and stripping processes. The results suggested that the microreactor system enhanced the Pb(II) extraction and stripping rate up to 104 times faster than the batch-wise system.

Synthesis of Dioxo-Dioxane and Dioxo-Dioxepane Ethyl Oleate Derivatives as Bio-Lubricant Base Stocks Tutik Dwi Wahyuningsih; Yehezkiel Steven Kurniawan
Indonesian Journal of Chemistry Vol 20, No 3 (2020)
Publisher : Universitas Gadjah Mada

In this study, two novel compounds, i.e., ethyl 8-(3-octyl-5,6-dioxo-1,4-dioxan-2-yl)octanoate and ethyl 8-(3-octyl-5,7-dioxo-1,4-dioxepan-2-yl)octanoate were prepared from oleic acid as the starting material. Both compounds were obtained from the esterification of the ethyl 9,10-dihydroxyoctadecanoate with dicarboxylic acids in the presence of p-toluenesulfonic acid as a catalyst. The chemical structures of the synthesized products were confirmed by FTIR, 1H-NMR, and MS spectrometers. The bio-lubricant properties of the products, such as density, total acid number, total base number, and iodine value, were determined and the effect of the dioxane and dioxepane heterocyclic rings to their bio-lubricant properties was discussed. The esterification of ethyl 9,10-dihydroxyoctadecanoate with oxalic acid gave ethyl 8-(3-octyl-5,6-dioxo-1,4-dioxan-2-yl)octanoate compound in 93.9% yield, while the esterification of ethyl 9,10-dihydroxyoctadecanoate with malonic acid gave ethyl 8-(3-octyl-5,7-dioxo-1,4-dioxepan-2-yl)octanoate compound in 89.6% yield. The density and total base number of the products were close to the standard commercial lubricant values. Meanwhile, the total acid number and the iodine value of the ethyl 8-(3-octyl-5,6-dioxo-1,4-dioxan-2-yl)octanoate were smaller than the standard commercial lubricant, showing that this compound is a promising bio-lubricant in a real application.

Co-Authors Abdul Karim Zulkarnain Adhi Dwi Hatmanto Adhiwibawa, Marcelinus Alfasisurya Setya Agus Dwi Ananto, Agus Agustinus Winarno Ahmad Bikharudin Alfanaar, Rokiy Amrulloh, Hanif Andini, Vicka Anggit Fitria Anggraeni, Putri Dian Anita Dwi Puspitasari Arif Cahyo Imawan Arif Cahyo Imawan Awalul Fatiqin Bambang Purwono Chairil Anwar Christyowati Primi Sagita Citrariana, Shesanthi Danny Nur Wahyu Hidayat Devi Ratnawati Diah Kartika Sari Dita Ariyanti Dwi Rahmasari Fatmawati Dwi Siswanta Dyah Iswantini Edi Setiyono Ervan Yudha Ervan Yudha Eti Nurwening Sholikhah Eti Nurwening Sholikhah Eti Nurwening Sholikhah Eti Nurwening Sholikhah Evi Maryanti Fahmi, Muhammad Riza Ghulam Faris Hermawan Faris Hermawan, Faris Fatimi, Hana Anisa Fatmasari, Nela Fitria, Anggit Gerry Nugraha Ghozali, Ali Aulia Hana Anisa Fatimi Harizal Harizal Harno Dwi Pranowo Harno Dwi Pranowo Harno Dwi Pranowo Harno Dwi Pranowo Hefni Effendi Hendra Hendra Hendrik Oktendy Lintang Hidetaka Kawakita Iksen Iksen Indriana Kartini Jeffry Julianus Johan Syafri Mahathir Ahmad Joko Waluyo Jumina Jumina Jumina Jumina Jumina Jumina Jumina Jumina Jumina Jumina Jumina Jumina Kasta Gurning Keisuke Ohto Keisuke Ohto Kesuma, Ruth Febriana Kevin Thomas Krisfian Tata Aneka Priyangga Krisfian Tata Aneka Priyangga Krisfian Tata Aneka Priyangga Krisfian Tata Aneka Priyangga Krisfian Tata Aneka Priyangga Langit Cahya Adi Lathifah Puji Hastuti Leny Yuliati Limpat Nulandaya Lintang, Hendrik Oktendy Marlina, Lala Adetia Masatoshi Maeki Masaya Miyazaki Mizuki Ryu Muhammad Fernadi Lukman Muhammad Idham Darussalam Mardjan Mu’afa Purwa Arsana Nela Fatmasari Nela Fatmasari Nisa, Siti Astika Novik Nurhidayat Nursofia, Baiq Ike Philip Anggo Krisbiantoro Priastomo, Yoga Priyangga, Krisfian Tata Aneka Purnomo, Tantyo Ardy Bintoro Purwantiningsih Sugita Putra, Nicky Rahmana Rahman, Sudarman Ramachandra Rao Sathuluri Rizky Riyami Putri Rizky Riyami Putri Rokiy Alfanaar Shintaro Morisada Tantiana Indriani Thathit Suprayogi Triyono Triyono Tutik Dwi Wahyuningsih Tutik Dwi Wahyuningsih Tutik Dwi Wahyuningsih Vina Aida Roza Wataru Iwasaki Wibowo, Risky Hadi Wibowo, Susalit Setya Yahya Febrianto Yudha Ramanda Yudha, Ervan

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