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All Journal Jurnal Ilmiah Farmasi Alchemy Jurnal Penelitian Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Molekul: Jurnal Ilmiah Kimia Jurnal Ilmu Kefarmasian Indonesia Jurnal Ilmiah Abdi Mas TPB Unram Jurnal Warta Desa (JWD) Jurnal Pepadu Jurnal Pendidikan dan Pengabdian Masyarakat

Emmy Yuanita

Program Studi Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Mataram

Author-ID : 2604478

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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BIODIESEL SYNTHESIS OF COTTON SEEDS OIL (CEIBA PENTANDRA) BY CHEMICALLY TRANSESTERIFICATION PROCESS AND ION FRAGMENTATION OF METHYL ESTE Gunawan, Erin Ryantin; Wulandari, Siska Ayu; Yuanita, Emmy; Suhendra, Dedy
Alchemy Jurnal Penelitian Kimia Vol 10, No 2 (2014)
Publisher : Alchemy Jurnal Penelitian Kimia

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

Fossil fuel is Commercial energy sources in many communities where their abundance progressively reduced and the resulting environmental pollution. Biodiesel is one alternative fuel made from vegetable oils are suitable to replace the function of fossil fuels and environmentally friendly. Synthesis of biodiesel from cotton seeds oil was carried out by chemically transesterification process. Composition of methyl esters in biodiesel and was analyzed by GC-MS are methyl palmitate (16.71 %), methyl 8,11- octadecadienoic (46.45 %) and methyl linoleate (4.21 %). The highest biodiesel produced from the conversion of the cotton seeds oil amounted to 93.7 % in weight ratio of oil and methanol (1:1) with the catalyst KOH 1 % (w/wÂ of oil). Chemical properties of biodiesel produced meets the standard SNI 04-7182-2006 include saponification value of 120.167 Â mg KOH / g, acid value of 0.28 mg KOH / g and iod value 55.84 gÂ iod/100g.

Pengembangan Home Industry Berbasis Minyak Tumbuhan Atsiri di Desa Genggelang, Kecamatan Gangga, Kabupaten Lombok Utara Hadi, Surya; Sudarma, I Made; Ulfa, Maria; Yuanita, Emmy; Tri Dharmayani, Ni Komang
Jurnal Ilmiah Abdi Mas TPB Unram Vol 3, No 1 (2021): Edisi Januari 2021
Publisher : Teknik Pertanian Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/amtpb.v3i1.62

Lombok Utara merupakan salah satu kabupaten di Provinsi Nusa Tenggara Barat dengan persentase penduduk miskin tertinggi mencapai 28,83%. Kejadian gempa bumi yang berpusat di Kabupaten Lombok Utara (KLU) tahun 2018 berdampak nyata pada penurunan perekonomian masyarakat. Oleh karena itu, diperlukan upaya untuk memulihkan dan meningkatkan perekonomian masyarakat diantaranya melalui pembukaan kesempatan kerja atau berusaha. Salah satu cara yang dapat dilakukan adalah melalui pemanfaatan sumber daya alam lokal yang tersedia menjadi produk bernilai ekonomi tinggi. Salah satu jenis sumber daya alam yang banyak tersedia di Kabupaten Lombok Utara, khususnya Desa Genggelang, Kecamatan Gangga yang menjadi pilihan lokasi kegiatan pengabdian masyarakat ini adalah tumbuhan penghasil minyak atsiri seperti kayu putih dan cengkeh. Pemanfaatan tumbuhan-tumbuhan tersebut sudah sangat dikenal luas sebagai sumber utama minyak atsiri baik sebagai minyak wangi maupun pemanfatan lainnya dalam bidang kesehatan. Kegiatan pengabdian masyarakat ini diarahkan untuk membina masyarakat desa dalam mengisolasi minyak atsiri dengan cara pemberian pemaparan mengenai teknik destilasi uap dan membuat produk kimia berbasis minyak kayu putih dan limbah daunnya seperti sabun, lotion dan lulur. Sehingga, dengan keterampilan ini diharapkan dapat menciptakan peluang usaha keluarga berbentuk industry rumah tangga (home industry) yang mampu meningkatkan kesejahteraan masyarakat.

Analisis kandungan bahan kimia obat natrium diklofenak dalam jamu pegal linu yang dijual di Kota Mataram Elliya Rosyada; Handa Muliasari; Emmy Yuanita
Jurnal Ilmiah Farmasi Vol. 15 No. 1 (2019): Jurnal Ilmiah Farmasi
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jif.vol15.iss1.art2

IntisariLatar Belakang: Dioscorea alata L. sebagai salah satu sumber pati perlu dipelajari untuk pengembangan potensial sebagai tablet disintegran.Tujuan: Tujuan penelitian ini adalah untuk mengetahui karakteristik dan potensi pati Dioscorea alata L. sebagai bahan disintegran tablet.Metode: Analisis karakteristik meliputi proksimat, kandungan amilosa, morfologi granular, kristalinitas, kekuatan pengembangan, dan pengikatan kapasitas air. Studi potensial sebagai disintegran dilakukan dengan merumuskan tablet piroksikam menggunakan pati Dioscorea alata L.. Evaluasi sifat-sifat disintegran dilakukan dengan uji disintegrasi, uji kerapuhan, uji kekerasan, dan uji disolusi tablet.Hasil: Berdasarkan studi karakteristik pati Dioscorea alata L., kadar air, abu, protein, dan lemak masing-masing adalah 13,08%, 0,23%, 1,43%, dan 0,81%. Kemudian, Amilosa adalah 18,08%. Daya bengkak dan pengikatan kapasitas air menunjukkan 1,21 dan 3,31. Analisis morfologi granular menunjukkan bentuk ellipsoid dan bola. Kristal pati menunjukkan bentuk semikristal dengan pola kristal ortorombik. Uji disintegrasi tablet menunjukkan bahwa formula I dan II, memiliki waktu hancur 3,50 dan 4,25. Uji kelayakan formula I dan formula II adalah 0,011% dan 0,008%. Uji kekerasan Formula I dan Formula II menunjukkan 5kg dan 6kg. Uji disolusi Formula I dan Formula II menunjukkan 88,85% dan 85,58%.Kesimpulan: Dari hasil tersebut, pati Dioscorea alata L. berpotensi sebagai bahan penghancur tabletKata kunci: Dioscorea alata L., tablet, disintegrant, pati, bahan bakuAnalysis of Diclofenac as drug chemical in jamu for rheumatism sold in Mataram cityAbstract Background: Dioscorea alata L is one of the starch sources needs to be studied for potential development as a tablet disintegrant.Objective: The aims of the research are to determine the characteristic of Dioscorea alata L.starch and to find out the potential astablet disintegrant material.Method: Characteristic analysis include are proximate, amylose content, granular morphology, crystallinity, swelling power, and water capacity binding. The potential study as disintegrant was performed by formulating a piroxicam tablet using Dioscorea alata L.starch. Evaluation of thedisintegrant properties was performed by disintegration test,friability test, hardness test, and dissolution test of the tablets.Results: Based on the characteristic study of Dioscorea alata L.starch, water, ash, protein, and fat contents are 13.08%, 0.23%, 1.43%, and 0.81%, respectively. Then, Amylose is 18.08%. Swelling power and water capacity binding shows 1.21 and 3.31.Glanular morphology analysis showsellipsoid and spherical form. Thecrystallinity of the starch shows assemicrystal form withorthorhombic crystal pattern. Tablet disintegration test shows that formula I and II, has disintegration time 3.50 and 4.25. Friability test of formula I and formula II is 0.011% and 0.008%. Hardness test of Formula I and Formula II shows 5kg and 6kg. Dissolution test of Formula I and formula II shows 88.85% and 85.58%.Conclusion: Over the results, the Dioscorea alata L. starch has the potential as the tablet disintegrant materialKeywords: Dioscorea alata L., tablet, disintegrant, starch, raw material

STUDI KINETIKA REAKSI ESTERIFIKASI ENZIMATIS ASAM MIRISTAT DENGAN OLEIL ALKOHOL Emmy Yuanita; Erin Ryantin Gunawan; Lely kurniawati; Siti Raudhatul Kamali
Molekul Vol 8, No 1 (2013)
Publisher : Universitas Jenderal Soedirman

Studi kinetika reaksi esterifikasi enzimatisasam miristat dan oleil alkohol telah dilakukan. Penelitian ini bertujuan untuk mendapatkan hasil sintesis yang optimal, sehingga meningkatkan konversi dan kecepatan reaksi pembentukan wax ester. Analisis kualitatif wax ester yang terbentuk dilakukan secara TLC dan GC, sedangkan analisis secara kuantitatif dilakukan secara titrasi asam-basa. Dari hasil penelitian diperoleh % konversi wax esterdengan menggunakan enzim tanpa perlakuan sebesar 94,44%. Nilai Km dan Vmax untuk asam miristat sebesar 2,5649 dan 14,3823 mmol x10-5 mmol/menit.mg katalis sedangkan untuk oleil alkohol sebesar 7,0345 dan 29,2292 mmol x10-mmol/menit.mg katalis. Sehingga dapat disimpulkan bahwa kinetika reaksi esterifikasi asam miristat dengan oleil Alkohol yang dikatalisis oleh enzim lipase tanpa perlakuan mengikuti Model Michaelis-Menten sedangkan mekanisme reaksi esterifikasi mengikuti mekanisme Bi Bi Ping-Pong

Skrining Fitokimia dan Potensi AktivitaS Antioksidan Ekstrak Etanol Daun Hijau dan Daun Merah Kastuba Baiq Sopiah; Handa Muliasari; Emmy Yuanita
JURNAL ILMU KEFARMASIAN INDONESIA Vol 17 No 1 (2019): JIFI
Publisher : Fakultas Farmasi Universitas Pancasila

Free radicals are an atom or molecule that has unpaired electron in its outer orbital that causes maked this reactive and unstable molecule. Free radicals when exposed continuously in the body are believed to cause several diseases include atherosclorosis, ischemia, cancer and premature aging therefore, antioxidant compounds is needed to inhibit the formation of free radicals. Kastuba (Euphorbia Pulcherrima Willd.) is one of the plants that has the potential as a natural antioxidant. The aim of this study was determining the content of active chemical compounds and free radical inhibitory potential of kastuba leaves ethanol ekstract.The procedures of this study were material collection, plant determination, simplicia production, extraction, phytochemical screening and qualitative free radical inhibition test with TLC (Thin Layer Chromatography). Phytochemical screening aim to determine the chemical compounds component of kastuba leaves ethanol extract including flavonoids, tannins and terpenoid test. The potential of free radical inhibition was carried out qualitatively with the TLC, DPPH (1,1-diphenyl-2-picrylhydrazyl) spray reagent. The results showed that kastuba leaves ethanol extract for both green leaves and red leaves contained flavonoids, tannins and terpenoids, and both leaves had the potential as free radical inhibition that indicated by yellow spots on TLC after DPPH reaction spray.

Biodiesel Synthesis of Cotton Seeds Oil (Ceibapentandra) By Chemically Transesterification Process and Ion Fragmentation of Methyl Ester Erin Ryantin Gunawan; Siska Ayu Wulandari; Emmy Yuanita; Dedy Suhendra
ALCHEMY Jurnal Penelitian Kimia Vol 10, No 2 (2014): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.10.2.528.104-115

Fossil fuel is commercial energy sources in many communities where their abundance progressively reduced and the resulting environmental pollution. Biodiesel is one alternative fuel made from vegetable which oils are suitable to replace the function of fossil fuels and environmentally friendly. Synthesis of biodiesel from cotton seeds oil was carried out by chemically ransesterification process. Composition of methyl esters in biodiesel thatwas analyzed by GC-MS are methyl palmitate (16.71%), methyl 8,11-octadecadienoic (46.45 %) and methyl linoleate (4.21 %).The highest amount of biodiesel conversion isat ratio of oil and methanol (1:1) with the catalyst 1% (weight of oil). The produced biodiesel was 93.7 %. Chemical properties of the produced biodiesel meets the standard SNI 04-7182-2006 i.e. saponification value of 120.167 mg KOH / g, acid value of 0.28 mg KOH / g and iod value 55.84g iod/100g of sample.

Methylation of Eugenol Using Dimethyl Carbonate and Bentonite as Catalyst Dina Asnawati; I Made Sudarma; Emmy Yuanita; Baiq Fadila Arlina; Saprini Hamdiani; Siti Raudhatul Kamali
Indonesian Journal of Chemistry Vol 15, No 3 (2015)
Publisher : Universitas Gadjah Mada

Eugenol is a compound with a variety of reactive functional groups such as allyl, hydroxy and methoxy. The presence of the functional groups brings eugenol possible to undertake the transformation into various derivative compounds with diverse activities. One of the simple and possible transformations is methylation or alkylation. Commonly, methyl halides and dimethyl sulphate are used as methylation agent. However, those kinds of methylation agents are toxic and carcinogenic. In this research dimethyl carbonate, an alternative methylation agent is used, because of its low toxicity, green, and economic. The synthesis has been carried out by using a catalyst. Bentonite was activated by heating to a temperature using 300 °C. Methylation was shown by the formation of a light yellow liquid (25.71% yield). The structures of products were characterized by GC-MS and obtained a compound, namely bis eugenol (4-allyl-2-methoxyphenoxy) methane (2.37% yield).

MARKOVNIKOV ADDITION OF CHLOROSULFURIC ACID TO EUGENOL ISOLATED FROM CLOVE OIL I Made Sudarma; Emmy Yuanita; I Wayan Suana
Indonesian Journal of Chemistry Vol 13, No 2 (2013)
Publisher : Universitas Gadjah Mada

The objective of this research was to synthesize new compounds with potential biological activity from readily accessed natural products. Eugenol has been reported to posses antioxidant and anticancer properties and was prepared by extracting from clove buds with dichloromethane and followed by isolation using column chromatography to afford pure eugenol (73%). In an attempt to enhance intrinsic activity of this natural compound, some derivatives were possible to synthesize. The main aim of this preliminary research was to transform eugenol to become sulfonic derivative. Eugenol was transformed to its sulfonic derivative in moderate yield (64%) by treatment with chlorosulfuric acid which undergoes Markovnikov addition. This product was rapidly confirmed by GC-MS and NMR analyses. Selective inhibition was performed by cyclic sulfonic ester derivative which could inhibit Eschericia coli and Staphylococcus aureus but not for Bacillus cereus.

Development of C-Arylcalix[4]resorcinarenes and C-Arylcalix[4]pyrogallolarenes as Antioxidant and UV-B Protector Jumina Jumina; Dwi Siswanta; Abdul Karim Zulkarnain; Sugeng Triono; Priatmoko Priatmoko; Emmy Yuanita; Nela Fatmasari; Ikhsan Nursalim
Indonesian Journal of Chemistry Vol 19, No 2 (2019)
Publisher : Universitas Gadjah Mada

Indonesia is rich with essential oils such as anise and clove leave oils. In respect to explore the potential utilization of these resources, it has been conducted the transformation of p-hydroxybenzaldehyde and vanillin (4-hydroxy-3-methoxy benzaldehyde) respectively derived from anise oil and clove leaves oil to a series of C-arylcalix[4]resorcinarenes and C-arylcalix[4]pyrogallolarene macrocycles. Treatment of these aldehydes with resorcinol in the presence of HCl in absolute ethanol at reflux for 8 h afforded C-4-hydroxyphenylcalix[4]resorcinarene (3a) and C-4-hydroxy-3-methoxy phenyl-calix[4]resorcinarene (3b) in good yields. When the aldehydes were treated with pyrogallol under the similar condition, the products were C-4-hydroxyphenyl calix[4]pyrogallolarene (3c) and C-4-hydroxy-3-methoxyphenylcalix[4]pyrogallolarene (3d) which were also obtained in excellent yields. Treatment of these calix[4]resorcinarenes and calix[4]pyrogallolarenes with cinnamoyl chloride and benzoyl chloride in pyridine afforded the corresponding cinnamate esters and benzoate esters in high yields. The resulted C-arylcalix-[4]resorcinarenes and C-arylcalix[4]pyrogallol arenes were subjected to antioxidant activity test using DPPH method and showed strong activity with IC50 values of 15–80 μg/mL. In terms of the synthesized calix cinnamates, the compounds showed UV-B absorption with SPF values of 15–30 at a concentration of 25 ppm which demonstrate their potential to be applied as a UV-B protector. Furthermore, these compounds were also tested for their photostability on the UV-B region and the results showed that the compounds were still unstable under irradiation for 30 min.

Design of New 2,4-Substituted Furo [3,2-B] Indole Derivatives as Anticancer Compounds Using Quantitative Structure-Activity Relationship (QSAR) and Molecular Docking Jufrizal Syahri; Nurul Hidayah; Rahmiwati Hilma; Beta Achromi Nurohmah; Emmy Yuanita
Molekul Vol 15, No 1 (2020)
Publisher : Universitas Jenderal Soedirman

This study aimed to propose new indole derivatives as anticancer through Quantitative Structure-Activity Relationship (QSAR) and molecular docking method. The best predicted anticancer activity of indole derivatives was recommended based on the QSAR equation. A data set consist of 18 indole derivatives from literature with anticancer activity against the A498 cell line was used to generate a QSAR model equation. The data set was divided randomly into training (14) and test (4) set compounds. The structure of indole compound was optimized first using AM1 semi-empirical methods, and the descriptors involved were analyzed using Multiple Linear Regression (MLR). The best QSAR equation obtained was Log IC50 = 65.596 (qC2) + 366.764 (qC6) – 92.742 (qC11) + 503.297 (HOMO) – 492.550 (LUMO) – 76.966. Based on the QSAR model, varying electron-withdrawing groups in C2 and C6 atom, as well as adding electron-donating groups in C11 were proposed could increase the anticancer activity of the indole derivatives. The QSAR analysis showed that compound 15 has the best predicted anticancer activity, supported by molecular docking results that showed hydrogen bond interaction with essential amino acids to build anticancer activity such as MET769, THR830, and THR766 residues.

Co-Authors Abdul Karim Zulkarnain Baiq Fadila Arlina Baiq Sopiah Beta Achromi Nurohmah Dedy Suhendra Dina Asnawati Dwi Siswanta Elliya Rosyada Erin Ryantin Gunawan Erin Ryantin Gunawan Erin Ryantin Gunawan Handa Muliasari Handa Muliasari I Made Sudarma I Made Sudarma I MADE SUDARMA I Wayan Suana Ikhsan Nursalim Iwan Sumarlan Jufrizal Syahri Jumina Jumina Jurnal Pepadu Lely kurniawati Made Ganesh Dharmayanti Maria Ulfa Maria Ulfa Nela Fatmasari Nurul Hidayah Priatmoko Priatmoko Rahmiwati Hilma Saprini Hamdiani Siska Ayu Wulandari Siska Ayu Wulandari, Siska Ayu Siti Raudhatul Kamali Sudirman Sudirman Sudirman Sudirman Sudirman Sudirman Sugeng Triono Surya Hadi Tri Dharmayani, Ni Komang

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