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All Journal HAYATI Journal of Biosciences The Journal of Pure and Applied Chemistry Research Alchemy Jurnal Penelitian Kimia Jurnal Kewirausahaan dan Bisnis Molekul: Jurnal Ilmiah Kimia
Desi Suci Handayani
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences

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SYNTHESIS AND CHARACTERIZATION OF C-HEXYL CALIX[4]RESORCINARENA FROM RESORCINOL-HEPTANAL CONDENSATION Handayani, Desi Suci; Almaqqomul Amin, Zainal Arifin; Kusumaningsih, Triana; Masykur, Abu
Alchemy Jurnal Penelitian Kimia Vol 10, No 1 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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Abstract

Synthesis of C-hexyl calix[4]resorcinarene through condensation reaction between resorcinol and heptanal with HCl catalyst has been investigated. Synthesis conducted by the ratio of resorcinol: heptanal (1:1) using reflux for 6 hours in ethanol. Structural analysis of the product was done by FTIR and 1H-NMR spectroscopy, while the characterization was done by determining melting point. The product was golden brown powder with a yield 99.43% and melting point more than 300 °C. Structural analysis with FTIR and 1H-NMR known vibration and signals characteristic of calix[4]resorcinarena group,the vibrations of the CH bridge. Vibration of CH bridge appearance at wave number 1445 cm-1 and 1456 cm-1, while signal of CH bridge appearance at chemical shifts from 4.17 to 4.21 ppm.
REAKSI SIKLISASI SITRONELAL DENGAN KATALIS POLIEUGENOL TANPA MEDIA DAN DENGAN MEDIA BENZENA Handayani, Desi Suci; Anwar, Chairil; ., Respati
Alchemy Jurnal Penelitian Kimia Vol 3, No 1 (2004)
Publisher : Alchemy Jurnal Penelitian Kimia

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Telah dilakukan siklomasi sitronelal dengan menggunakan katalis Poli(eugenol sulfonat) tanpa media dan dengan media benzena. Isolasi sitronelal dari minyak sereh dilakukan dengan disitlasi fraksinasi pengurangan tekanan dan dilakukan redistilasi. Fraksi-fraksi dipisahkan berdasarkan titik didihnya da dianalisis dengan Kromatografi Gas-Spektometer Massa. Siklisasi sitronelal dilakukan dengan mereaksikan 3,08 g sitronelal dengn katalis PES pada suhu kamar dan lama pengadukan 24 jam baik tanpa media maupun dalam media benzena. Hasil siklisasi dianalisis dengan spektrofotometer Inframerah dan Kromatografi Gas-Spektrometer Massa. Hasil isolasi sitronelal yang digunakan dalam penelitian ini adalah fraksi II hasil redistilasi fraksi II. Analisis dengan kromatografi Gas-Spektrometer Massa menunjukkan adanya sitronelal dengan fragmen pada m/z 154, 136, 95, 84, 69, 55 dan kadar 96,34%. Analisis dengan spektrofotometer Inframerah menunjukkan serapan dari gugus karbonil (1724,4 cm-1), aldehid (2856,4 dan 2751,6 cm-1), gugus metilen (1452,3 cm-1), metal (1379 cm-1) dan isopropilidin (831,3 cm-1) yang merupakan gugus fungsi-gugus fungsi dari sitronelal. Reaksi siklisiasi sitronelal tanpa media menghasilkan isopulegol dengan kadar 21,36% dan rendemen 19,09%, sedangkan dalam media benzena dengan kadar 37,33% dan rendemen 42,17%. Analisis dengan Inframerah hasil siklisasi menunjukkan munculnya serapan pada daerah 3377,1 cm-1 yang menunjukkan fragmen pada m/z 154, 136, 121, 95, 81, 71, dan 55 yang merupakan fragmen dari isopulegol.
SYNTHESIS DAN CHARACTERIZATION OF C-4-HYDROXY-3-ETHOXYPHENYL CALIX[4]RESORCINARENE SULFONATE Handayani, Desi Suci; Sholikh, Riska Azizawati; Kusumaningsih, Triana
Alchemy Jurnal Penelitian Kimia Vol 9, No 2 (2013)
Publisher : Alchemy Jurnal Penelitian Kimia

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The synthesis of C-4-hydroxy-3-methoxyphenyl calix[4]resorcinarene sulfonate using vanillin as a starting material has been done. The synthesis was carried out in two steps i.e. (1) acid-catalyzed cyclization resorcinol with vanillin and (2) sulfonation C-4-hydroxy-3-methoxyphenyl calix[4]resorcinarene. Product were analyzed their structure with FTIR and1H NMR also characterized their melting point and solubility. The results showed that product have melting point more than 300 oC and more soluble in aquadest than organic solvents.
BIOSYNTHESIS OF BIOSURFACTANT BY PSEUDOMONAS AERUGINOSA USING CASSAVA FLOUR INDUSTRIAL WASTEWATER AS MEDIA Suryanti, Venty; Hastuti, Sri; Handayani, Desi Suci; Windrawati, Windrawati
Alchemy Jurnal Penelitian Kimia Vol 10, No 1 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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Biosynthesis of biosurfactant by Pseudomonas aeruginosa have been prepared using cassava flour industrial wastewater (manipueira) as medium. The optimum condition of the biosurfactans biosynthesis was obtained using media containing nutrient broth and manipueira without centrifugation (NBM) with 4 days fermentation. UV-Vis and FT-IR spectra indicated that the biosurfactant was a rhamnolipid containing hydroxyl, ester, carbocylic and aliphatic carbon chain functional groups. Biosurfactant exhibited critical micelle concentration (CMC) value of 576  mg/L and surface tension value of 0.045  N/m. The biosurfactant was able to decrease the interface tension and form emulsion with benzene, toluene, gasoline and palm oil. This biosurfactant showed w/o emulsion system.
MIKROENCAPSULATION OF CROSSLINKED CHITOSAN AND ITS ADSORPTIVITY TEST ON REMAZOL YELLOW FG 6 Kusumaningsih, Triana; Pranoto, Pranoto; Handayani, Desi Suci; Kusuma Astuti, Dian Endah
Alchemy Jurnal Penelitian Kimia Vol 9, No 2 (2013)
Publisher : Alchemy Jurnal Penelitian Kimia

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Synthesis of adsorbent by crosslink and microencapsulation modification produce modified chitosan had been done. The product was used as adsorben for Remazol Yellow FG 6 dye. The adsorptivity test was carried out by comparing the ability of chitosan, crosslinked chitosan and mikroencapsulation of crosslinked chitosan to adsorbremazol yellow FG 6 dye at pH 11, 15 ppm of dye’s concentration, and at various contact times.The result shows that the crosslinked chitosan adsorbs Remazol Yellow FG 6 dye 3.99 times higher than the unmodified chitosan. Meanwhile, the microcapsules containing crosslinked chitosan adsorb Remazol Yellow FG 64.00 times higher than unmodified chitosan. The adsorption performance of each prepared material was determined from UV-Vis absorbance analysis. Although the adsorption performance of the microcapsules containing crosslinked chitosan is almost similar to the crosslinked chitosan, however the microcapsules have shorter optimum contact time and also more stable than the crosslinked chitosan. It shows that the modification of chitosan with crosslinking and microencapsulation process improve its adsorptivity and stability.
SULFONASI DAN POLIMERISASI EUGENOL Handayani, Desi Suci
Alchemy Jurnal Penelitian Kimia Vol 1, No 2 (2002)
Publisher : Alchemy Jurnal Penelitian Kimia

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Eugenol dapat disulfonasi dan dipolimerisasi secara bersamaan menghasilkan poli(eugenol sulfonat). Selain itu sulfonasi dapat dilakukan terhadap polieugenol dan memperoleh produk yang sama. Sulfonasi eugenol dilakukan dengan reagen asam sulfat pekat dengan katalis PbSO4. Produk yang pertama diberi simbul PESe memberikan hasil 40,08 %, sementara produk yang lain diberi simbul PESp memberikan hasil 54,58 %.PESe diaplikasikan sebagai katalis asam dalam reaksi siklisasi sitronelal dalam pelarut benzene. Hasil siklisasi sitronelal diperoleh isopulegol sebesar 37,33 %.
PREPARATION OF MICROCAPSULE OF CHITOSAN GEL BEADS CROSSLINKED WITH ETHYLENE GLYCOL DIGLYCIDYL ETHER (Psf-Egde-Cts) AS ADSORBENT FOR Procion Red Mx 8b Dye Kusumaningsih, Triana; Handayani, Desi Suci; Lestari, Yuni
Alchemy Jurnal Penelitian Kimia Vol 8, No 1 (2012)
Publisher : Alchemy Jurnal Penelitian Kimia

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Microcapsules of chitosan gel beads crosslinked with Ethylene Glycol Diglycidyl Ether (PSF-EGDE-CTS) were prepared to improve adsorption capacity and mechanical stability of chitosan at acidic condition. These microcapsules were prepared through three step i.e. the formation of gel beads (CTS), crosslinked CTS with EGDE (EGDE-CTS) and microencapsulation of EGDE-CTS with Polysulfone (PSF-EGDE-CTS). Product characterizations were carried out using FTIR and SEM. The adsorptions were carried out by variation of pH and contact time in order to determine the optimum condition of adsorption. The yield of Microcapsules PSF-EGDE-CTS was 94,79 wt %. The optimum condition of Procion Red MX 8B dye adsorption by PSF-EGDE-CTS is at pH 5 and 24 hours of contact time. The adsorption capacity of PSF-EGDE-CTS is 40,69 mg/g.
SUBSTITUSI IPTEKS PEMBESARAN LELE TEBAR PADAT I.F. Nurcahyo I.F. Nurcahyo; Yuniawan Hidayat; Venty Suryanti; Desi Suci Handayani; Witri Wahyu Lestari; Edi Pramono
Jurnal Kewirausahaan dan Bisnis Vol 19, No 10 (2016): December
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkb.v19i10.8332

Abstract

Petani pembesaran lele banyak yang mengeluh gagal dalam usahapembesaran lele. Kegagalan tersebut disebabkan oleh penggunaan pakandan kolam yang tidak efisien serta harga pakan mahal. Tujuan kegiatanpengabdian masyarakat ini memberikan wawasan tentang metode barudalam usaha pembesaran lele yang menguntungkan. Mitra pengabdiankegiatan ini yaitu kelompok pembesaran lele Sungut Emas di Boyolali danpetani-petani pembesaran lele disekitarnya. Metode pengabdiandilakukan dengan metode substitusi ipteks secara teori, praktek lapangan,dan pendampingan. Substitusi ipteks secara teori meliputi penjelasantentang pembesaran lele tebar padat dan aplikasi enzim dalam efisiensipakan. Materi praktek lapangan meliputi cara persiapan air, carapengelolaan air, cara menangani penyakit dan cara memberi pakan.Simpulan, substitusi ipteks pembesaran lele tebar padat mampumenyelesaikan masalah yang dihadapi petani pembesaran lele tebar padatsehingga keuntungan usaha meningkat.
Synthesis and Characterization of Anethole-lauryl Methacrylate Copolymer via Cationic Polymerization Handayani, Desi Suci; Tahara, Alfia Uke; Firdaus, Maulidan; Suryanti, Venty; Kusumaningsih, Triana; Marliyana, Soerya Dewi; Wibowo, Fajar Rakhman; Wartono, Muhammad Widyo
Molekul Vol 18 No 3 (2023)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2023.18.3.7078

Abstract

The synthesis of anethole-lauryl methacrylate (LMA) copolymer had been carried out by cationic polymerization using BF3O(C2H5)2 as the initiator without the use of solvent at room temperature (28-30 °C) over atmospheric N2 conditions. Polymerization was conducted by varying LMA concentration i.e. 2%, 4%, and 6%, (w/w) with respect to the anethole weight. Structural determination of co-poly(anethole-LMA) was done using FTIR and 1H-NMR spectrophotometer. The relative molecular weight (Mv) of co-poly (anethole-LMA) was measured by an Ostwald Viscometer at room temperature. Morphological characterization and surface area analysis of co-poly(anethole-LMA) was performed using SEM and SAA, respectively. The successful synthesis of co-poly(anethole-LMA) was proven by the disappearance of vinyl group absorption at 1696, 1638, 965, and 938 cm-1 of the FTIR spectra, as well as the loss of vinyl group proton signals at 6.4-5.5 ppm in the 1H-NMR spectra. Increasing the weight of the LMA affected the characteristics of co-poly(anethole-LMA). The relative molecular weight of co-poly(anethole-LMA) was found to rise by increasing the weight of LMA. The Mv of co-poly(anethole-LMA) 2%, 4%, and 6% were 32378.62, 50611.05, and 65133.79 g/mol, respectively. The morphology of co-poly(anethole-LMA) showed that the surface distance between particles was getting tighter and the highest surface area in co-poly(Anethole-LMA) 6% was 233.80 m2/g.
Labdane Aldehyde Diterpenoids from Curcuma mangga Rhizome Wartono, Muhammad Widyo; Aini, Qurotul; Suryanti, Venty; Firdaus, Maulidan; Rakhman Wibowo, Fajar; Dewi Marliyana, Soerya; Kusumaningsih, Triana; Suci Handayani, Desi
The Journal of Pure and Applied Chemistry Research Vol. 12 No. 3 (2023): September-December 2023
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2023.012.03.694

Abstract

Curcuma mangga val. (Zingiberaceae) is one of the plants that used as traditional medicine by Indonesian. Several studies have been reported on the content of compounds of C. mangga, but it is not yet known which compounds have medicinal properties. In this study, two labdane diterpenes were isolated from the extract of rhizome of C. mangga. Determination of the structure conducted by NMR (1H, 13C, HSQC and HMBC) that obtained two compounds, calcaratarin A (1) and labda-8(17),12-diene-15,16-dial (2). Both compounds have an aldehyde functional group. However, both compounds did not show antibacterial activity on Escherichia coli.
Co-Authors Abu Masykur Atmira Sariwati Chairil Anwar Dewi Marliyana, Soerya Dian Endah Kusuma Astuti, Dian Endah Dwi Siswanta edi pramono Fajar Rakhman Wibowo Fita Sari I.F. Nurcahyo I.F. Nurcahyo Ichiro Kamei Jumina Jumina Laksono Trisnantoro Maulidan Firdaus Muhammad Widyo Wartono, Muhammad Widyo Mustofa Mustofa Ninis Yuliati Pranoto Pranoto Qurotul Aini Rakhman Wibowo, Fajar Respati ., Respati Riska Azizawati Sholikh, Riska Azizawati Soerya Dewi Marliyana Tahara, Alfia Uke Triana Kusumaningsih Venty Suryanti Venty Suryanti Windrawati Windrawati, Windrawati Witri Wahyu Lestari Yuni Lestari Yuniawan Hidayat Zainal Arifin Almaqqomul Amin, Zainal Arifin