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All Journal Jurnal Penelitian Saintek Jurnal Ilmiah Farmasi JURNAL KIMIA SAINS DAN APLIKASI POSITRON Jurnal Kimia Khatulistiwa Jurnal Sains dan Teknologi Kimia The Journal of Pure and Applied Chemistry Research Jurnal Riset Kimia Jurnal Kelautan Tropis Jurnal Al-Qardh Jurnal Kimia Mulawarman Jurnal Fitofarmaka Indonesia Al-Kimia ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Indonesian Journal of Pure and Applied Chemistry Chemistry Indonesian Journal of Chemical Research CHEESA: Chemical Engineering Research Articles Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas ADPI Sains dan Teknologi Jurnal Teknologi Lingkungan Lahan Basah Jurnal Akademika Kimia Arus Jurnal Psikologi dan Pendidikan Molekul: Jurnal Ilmiah Kimia Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat

Endah Sayekti

Jurusan Kimia FMIPA Universitas Tanjungpura

Author-ID : 3796981

Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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SINTESIS DAN AKTIVITAS ANTIKANKER SENYAWA C-4-ALILOKSI-3-METOKSIFENILKALIKS[4]RESORSINARENA Endah Sayekti; Jumina Jumina; Dwi Siswanta; Mustofa Mustofa
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 1 (2020)
Publisher : Tanjungpura University

The aims of this study was to synthesize of C-4-alyloxy-3-methoxyphenylcalix[4]resorcinarene (3). The syntheses was conducted by condensation reaction of resorcinol with 4-allyloxy-3-methoxybenzaldehyde (2) in ethanol with hydrochloric acid as a catalyst. The (2) compound was synthesized by the reaction of the 4-hydroxy-3-methoxybenzaldehyde (vanillin) (1) via allylation reaction using an allylbromide with the sodium metal as a catalyst in ethanol. A (3) compound was orange solid. m.p. of 176–177 °C (dec.). Yield (78%). FTIR (KBr, ν; cm-1): 3441 (-OH); 3086 and 3008 (Csp2-H); 2939 (Csp3-H ); 1612 (C=C aliphatic); 1512 (C=C aromatic); 1427 (>CH- methine); 1234, 1211, 1080 and 1018 (C-O-C asymmetric); 925 (C=CH2 terminal). 1H-NMR (DMSO-d6; 500 MHz) δ (ppm): 8,50 (8H, s, OH); 6.43 (4H, s, ArC-H); 6,36-6,38 (4H, d, J=10 Hz); 6.32 (4H, s, ArC-H); 6.26-6.28 (4H, d, J=10 Hz); 6.13 (4H, s, ArC-H); 6.00-6.05 (4H, m, =C-H); 5.38-5.40 (4H, d, J=10 Hz); 5.31 (4H, s, >C-H methine); 5.16-5.18 (4H, d, J=10 Hz); 4.34-4.36 (8H, d, J=10 Hz); 3.29 (12H, s, -OCH3). 13C-NMR (DMSO-d6; 500 MHz) dC (ppm): 33 (4 x CH methine); 55 (4 x CH3); 69 (4 x CH2-); 101 (4 x ArC-H); 112 (4 x ArC-H); 113 (4 x ArC-H); 116 (4 x =CH allyl terminal); 120 (4 x ArC-H); 122 (8x ArC-); 132 (4 x ArC-H); 134 (4 x =CH allyl); 137 (4 x ArC-); 145 (4 x ArC-O); 148 (4 x ArC-O); 152 (8 x ArC-OH). MS (ESI) m/z: 1137.5 (M+). Anticancer evaluation was performed on (3) compound by MTT (3-(4,5-dimethyltiazole-2-yl)-2,5-diphenyltetrazolium bromide) method showed that (3) compound has a cytotoxic activity against HeLa and T47D cells which IC50 value respectively are 13,58 and 65,26 µg/mL.

Identifikasi Komponen Senyawa Organik dan Uji Aktivitas Antiinflamasi dari Fraksi Etil Asetat Daun Cabai Rawit (Capsicum frutescens L.) Uci Pradina; Ajuk Sapar; Warsidah Warsidah; Endah Sayekti; Anthoni Batahan Aritonang
Al-Kimia Vol 10 No 1 (2022): JUNI
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v10i1.20456

Cayenne pepper was known to treat swelling of tissue cells and is thought to have anti-inflammatory activity. The aim study is to examine the anti-inflammatory activity of the ethyl acetate fraction of cayenne pepper and identify the components of organic compounds in the ethyl acetate fraction. The stages of this research include preparation, extraction, partitioning, phytochemical tests, anti-inflammatory activity tests using Human Red Blood Cells (HRBC), and identifying the components of organic compounds they contain. Among the three fractions obtained at the extraction stage, the ethyl acetate fraction had the best activity as an anti-inflammatory at a concentration of 1000 mg/L of 57.77%. The fractionation of the ethyl acetate fraction was carried out using Vaccum Liquid Chromatography (VLC), and four combined fractions were obtained. One of the combined fractions, code EA-4-5, with a weight of 0.188 grams, was analyzed using GC-MS and FTIR. The two main compounds obtained from the GC-MS analysis were dodecanoic acid (25.79%) and (-)-Loliolide (12.86%). The results of the FTIR interpretation of the EA-4-5 fraction showed absorption at a wave number of 3234.62 cm-1 (stretching vibration of the -OH functional group), 3088.03 cm-1 and 3028.24 cm-1 (stretching vibration of the functional group =CH), 2931.8 cm-1 and 2858.51 cm-1 (functional group strain vibration –CH), 1712.79 cm-1 (functional group strain vibration –C=O), and 1606.7 cm-1 (strain vibration functional group –C=C).

Flavonoid Compounds of the Catechin from Wungu (Graptophyllum pictum (L.) Griff) Leaves and the Sun Protecting Factor Value Masyita Masyita; Endah Sayekti; Nurlina Nurlina
Jurnal Akademika Kimia Vol. 11 No. 1 (2022)
Publisher : Universitas Tadulako

The flavonoid content in wungu (Graptophyllum pictum (L.) Griff.) leaves has the potential as a sunscreen. The study aims to identify isolates of flavonoid compounds from wungu leaves and determine the SPF value. Steps are followed by extraction, fractionation, phytochemical test, separation by chromatography, identification, and SPF test. Extraction was carried out with methanol, followed by fractionation with n-hexane and dichloromethane. Dichloromethane fraction was chosen to proceed to the separation step because the results of the phytochemical test showed a vigorous color intensity for the content of flavonoids. The isolate (3.6 mg; dark green; amorphous; mp. 132-136 °C) was identified using a UV-Vis spectrophotometer using methanol as a solvent with a shift reagent NaOH, AlCl3, and a mixture of concentrated AlCl3 and HCl. Based on the UV-Vis spectra, the isolate was predicted to be flavonoid compounds belonging to the catechin group, which have a hydroxyl group at positions C-3, C-7, and do not have an ortho-hydroxy group in ring B. The SPF value of the isolate of 2.3244 at 100 ppm was determined in vitro and calculated by the Qian equation. Therefore, isolate was categorized as sunscreens that provided minimal protection

Antifeedaant Compound From Daruju Leaves (Acanthus Ilicifolius Linn) Against Eggplant Leaves Beetle (Epilachna Sparsa) Ade Mariadi; Ari Widiyantoro; Endah Sayekti
JURNAL KIMIA MULAWARMAN Vol 20 No 1 (2022)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v20i1.1127

Daruju (Acanthus ilicifolius Linn) contain flavonoids, terpenoids, steroids, saponins, alkaloids and tannins that can be used as antifeedant compounds. The purpose of this study is to identify the active compound antifeedant from daruju leaves against the eggplant leaf beetle (Epilachna sparsa). The antifeedant activity test was carried out on the methanol extract, the partitioned fraction and the isolate. This study was began by maceration of daruju leaf powder (1000 g) with methanol that obtained methanol extract of 130.3 g. The methanol extracts were then separated by partitioning that obtained n-hexane, dichloromethane, ethyl acetate and methanol fraction. Antifeedant activity test against eggplant leaf beetle (Epilachna sparsa) showed the dichlormethane fraction at a concentration of 6 ppm had the best activity compared to other fractions with an activity of 90.62%. Separation and purification of the dichloromethane fraction to obtain isolation was carried out by column chromatography. The isolate showed 96.1% antifeedant activity at a concentration of 6 ppm. Based on 1H-NMR spectrum showed isolate is p-Oxy-2-ethylhexyl benzaldehyde.

AKTIVITAS ANTIOKSIDAN DAN KARAKTERISASI ISOLAT DARI FRAKSI n-HEKSANA PADA RUMPUT LAUT (Caulerpa sertularioides) ASAL SINGKAWANG KALIMANTAN BARAT (ANTIOXIDANT ACTIVITY AND ISOLATE CHARACTERIZATION OF n-HEXANE FRACTION IN SEAWEED (Caulerpa sertularioides) FROM SINGKAWANG WEST KALIMANTAN) Fitriani Fitriani; Endah Sayekti; Ajuk Sapar
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 1 (2022)
Publisher : Tanjungpura University

Seaweed (Caulerpa sertularioides) is one of the marine plants of West Kalimantan, which contains bioactive compounds that can act as antioxidants. The purpose of this study was to determine antioxidant activity and identify components of organic compounds in seaweed C. sertularioides. This research was carried out in several stages, namely extraction, fractionation, antioxidant test (DPPH), vacuum liquid chromatography (KVC), gravity column chromatography (KKG), and two-dimensional thin-layer chromatography (2-Dimensional TLC), and characterization. Antioxidant activity test by DPPH method on methanol extract, n-hexane fraction, and fraction DCM from seaweed C. sertularioides obtained IC50 values of 82.21 g/mL (strong antioxidant), 131.2 g/mL (medium antioxidant), and 192.43 g/mL (weak antioxidant). The results of the FT-IR identification of isolate I4 showed a strong absorption at 3483-3387 cm-1,which was specific for the OH group. The presence of strong absorption of 2926-2854cm-1 C-H stretching group, a wide absorption of 1338 cm-1 of methyl and methylene groups (stretching). There was a strong absorption of 1543-1463 cm-1 C-O ester group (bend), a broad absorption of 1074 cm-1 C-O (stretching), and absorption of 1795-1735 cm-1 specific for the C=O ester group. The results of GC-MS on isolate I4 indicated the main component was compound 1-nonadecene (14.09%), Trifluoroacetoxy hexadecane based on the literature, the compound included the organic component of fatty acids, and esters

Senyawa Antiinflamasi dari Fraksi Etil Asetat Akar Pandan Wangi (Pandanus amaryllifolius Roxb.) Terhadap Udema Kaki Mencit Terinduksi Karagenan Diva Feraldy; Endah Sayekti; Ari Widiyantoro
Jurnal Fitofarmaka Indonesia Vol 10, No 1 (2023): JURNAL FITOFARMAKA INDONESIA
Publisher : Faculty of Pharmacy, Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jffi.v10i1.885

Inflammation can occur due to insect bites, toxins, burns and blows. Inflammation can be cured using Non-Steroid Anti-Inflammatory Drugs (OIANS). Fragrant pandan root is thought to have anti-inflammatory activity because it contains alkaloids and flavonoid compounds. This study aims to determine the activity and characteristics of anti-inflammatory compounds from extracts, fractions and isolates of ethyl acetate root of fragrant pandan (Pandanus amaryllifolius Roxb.) against carrageenan-induced foot edema of mice. The process of isolation of fragrant pandan roots includes stages such as maceration, partitioning and chromatography. The results of the study The methanol extract had good activity at a dose of 200 mg/kg BB for a period of time (t3) 51.7%; the methanol fraction had good activity at a dose of 200 mg/kg BB in the time span (t3) 38.2%; the ethyl acetate fraction had good activity at a dose of 200 mg/kg BB over a period of time (t3) 56.9%; the dichloromethane fraction had good activity at a dose of 200 mg/kg BB in the time range (t3) 59.2%; the n-Hexane fraction had good activity at a dose of 200 mg/kg BB for a period of time (t3) 37.1%; and isolates had good activity at a dose of 50 mg/kg BB over a period of time (t3) 35.6%. K2 isolate from the ethyl acetate fraction was characterized using 1H-NMR with DMSO solvent at a frequency of 500 MHz and 13C-NMR with DMSO solvent at a frequency of 125 MHz. K2 isolate from the ethyl acetate fraction had similarities to Pandalisines A.

AKTIVITAS TABIR SURYA FRAKSI METANOL DARI DAUN SIMPUR (Dillenia indica Linn.) DAN KARAKTERISASI SENYAWA ISOLATNYA Salatiana Salatiana; Endah Sayekti; Gusrizal Gusrizal
Indonesian Journal of Pure and Applied Chemistry Vol 6, No 1 (2023)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v6i1.63085

Sunscreen activity has been tested on simpur leaves (Dillenia indica Linn.) by determining the value of sun protection factor (SPF), erythema transmission percentage (%Te) and pigmentation transmission percentage (%Tp) of each methanol extract, n-hexane, dichloromethane fraction, and methanol fraction from simpur leaves. This test was carried out using a UV-Vis spectrophotometer (λ = 200-400 nm), a variation of sample concentration of 50; 75 and 100 ppm. The methanol fraction at a concentration of 100 ppm showed the highest SPF value of 4.630 ± 0.043 and the lowest %Te and %Tp values of 32.316 ± 0.297 and 52.699 ± 0.160, respectively. Isolation of flavonoids from the methanol fraction produced a relatively pure isolate (Rf = 0.901) with code G1 in the form of a yellowish-green solid/powder (1.5 mg). Characterization of isolate G1 using the FTIR spectrophotometer showed that there were vibrations of the alcohol O-H groups (3446.79 cm-1), aliphatic C-H (2958.80-2858.51 cm-1), C=C aromatic (1635.64 cm-1), C=C aromatic (1635.64 cm-1), C =O (1730.15 cm-1), C-O alcohol (1122.57 cm-1), and aliphatic C-H (1463.97-1382.96 cm-1). Based on a comparison of the spectra of isolate G1 with the spectra from the literature, isolate G1 was predicted as a flavonoid compound in the flavan or flavanol groups

Rosella Petal Extract (Hibiscus sabdariffa Linn.) as a Reducing Agent in Silver Nanoparticle Synthesis and Its Antibacterial Activity Dewi Dwi Purwati; Gusrizal Gusrizal; Endah Sayekti
Jurnal Kimia Sains dan Aplikasi Vol 26, No 10 (2023): Volume 26 Issue 10 Year 2023
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.26.10.411-420

Silver nanoparticles have superior properties that attract much attention because they can increase their effectiveness and efficiency compared to their macroscopic size. Silver nanoparticles have several benefits, one of which is as an antibacterial agent. Synthesis of silver nanoparticles was carried out by reducing silver ions (Ag+) to uncharged silver (Ag0) using a reducing agent from Hibiscus sabdariffa Linn. petal extract. This research aims to synthesize silver nanoparticles by studying several parameters that influence their formation, such as the pH of Hibiscus sabdariffa Linn. petal extract, reaction time, silver nitrate concentration, and Hibiscus sabdariffa Linn. petal extract concentration. The silver nanoparticles formed were then tested for their antibacterial activity. The experimental results showed that the best synthesis was performed using Hibiscus sabdariffa Linn. petal extract with pH 10, reaction time of 45 minutes, silver nitrate concentration of 1×10-4 M, and Hibiscus sabdariffa Linn. petal extract concentration of 0.004%. The synthesized silver nanoparticles, examined through a transmission electron microscope, exhibited a size distribution ranging from 2 to 26 nm with an average size of 12 ± 3 nm, which was stable with a storage time of 3 months. Silver nanoparticles showed antibacterial activity against Staphylococcus aureus. Hibiscus sabdariffa Linn. petal extract is a promising reducing agent for producing antibacterial silver nanoparticles, showcasing its potential in this application.

Synthesis of NaP Zeolite Based on Bauxite Red Mud Using Hydrothermal Method on Mole Ratio of SiO2/Al2O3 Variations Eviva, Nur; Shofiyani, Anis; Sayekti, Endah
POSITRON Vol 13, No 1 (2023): Vol. 13 No. 1 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v13i1.60099

Red mud is a bauxite industrial waste of reddish-brown mud with high alkalinity. Red mud has relatively high silica and alumina content, so it can be utilized as a raw material in the synthesis of zeolite. This study aims to synthesize high-purity NaP zeolite from red mud at various SiO2/Al2O3 mole ratios. The synthesis begins with neutralizing the red mud, followed by decomposition using the alkaline fusion method at a ratio of red mud:NaOH = 1:1 (w/w). The filtrate produced by the alkaline fusion was adjusted to the mole ratio of SiO2/Al2O3 = 2.0; 2.5; 3.0; and 4.0, respectively, by adding sodium silicate, followed by a hydrothermal process using an autoclave at 120oC for 16 hours. The synthesized zeolites were characterized using XRD and FTIR spectrophotometry. The XRD results showed that the zeolite produced in all variations of the SiO2/Al2O3 mole ratio studied was a type of high-purity NaP with no other zeolite crystalline phases found as impurities. The structure formed is tetragonal with a degree of crystallinity of 74.54%; 76.47%; 78.94%; 75.64%, and crystal size 80.2286; 54.3437; 37.7099 and 40.1226 nm for zeolite with SiO2/Al2O3 mole ratio 2.0; 2.5; 3.0; and 4.0, respectively. Based on the results of the study, pure NaP zeolite can be synthesized from red mud material using the hydrothermal method at the ratio of moles SiO2/Al2O3 = 2.0 – 4.0.

Activated Carbon/MnO2 Composite as Uranium Adsorbent in Solution Anjarsari, Nita; Zaharah, Titin Anita; Sayekti, Endah; Yamin, Bohari Mohd.
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 1 (2024)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i1.13863.24-35

This research aimed to make an adsorbent from activated carbon/MnO2 (AC/MnO2) composite and examine its characteristics, adsorption capacity, and mechanism for uranyl ions. Carbon was made from Oil Palm Empty Fruit Bunches (OPEFB) through sodium acetate's carbonization and activation processes. The AC/MnO2 composite was made using the in-situ deposition method, namely by oxidizing Mn2+ compounds to Mn4+ under alkaline conditions at a temperature of ±80°C. An FTIR spectrophotometer was used to characterize the adsorbent, and a UV-Vis spectrophotometer was used to determine the content of uranyl. The results of FTIR analysis showed that MnO2 in Mn-O and Mn-O-Mn absorption was bound to activated carbon. It was also discovered that AC/MnO2 adsorbent reduced uranium content in solution in the form of uranyl ion for adsorbent mass of 2.5 grams and a contact time of 60 minutes, leading to adsorption percentages of 65.5%. The adsorption mechanism followed the Langmuir adsorption isotherm equation by forming a single layer. Meanwhile, the adsorption kinetics followed pseudo-second-order with a value of k = 6.7 g/mg.min.

Co-Authors Ade Mariadi Aderiya Munika Adhitiyawarman, Adhitiyawarman Agus Wibowo Agustiawan, Deri Ajuk Sapar Alimunddin, Andi Hairil Andi Hairil Alimuddin Andi Hairil Alimuddin Anggelita Anggelita Anim Rahmayati Anis Shofiyani Anis Shofiyani Anjarsari, Nita Ari Widiyantoro Aritonang, Anthoni Batahan Asniati, Asniati Azhar, Annisa Sylvania Dewi Dwi Purwati Ditya Marissa Diva Feraldy Dwi Siswanta Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Emy Awalliah Eviva, Nur Fabiani, Verry A. Fathurrahman, Rizal Fitriani Fitriani Gusrizal Gusrizal Gusrizal Gusrizal Hafidz Kamarul Hadj Hasanuddin Hidayati, Isnaini Nur Imelda Hotmarisi Silalahi Imroah, Nurfitri Irma Nirmala Jumina Jumina Lestari, Titiek Lia Destiarti Masyita Masyita Minsas, Sukal Muhardi Mustofa Mustofa Narsito Narsito Nelly Wahyuni Nurlina, Nurlina P.W., Elvi Rusmiyanto Pertiwi, Imanda Firmantyas Putri Prayitno, Dwi Prayitno, Dwi Imam Puji Ardiningsih Radianti, Sri Rahayu, Warsi Kurnia Ramadhan, Aditya Nur Ratnasari, Popon Risa Nofiani Risa Nofiani Rosidah, Sofiatun Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Salatiana Salatiana Sari, Reny Puspita Shofiyani, Anis Sri Juari Santosa Sri Noegrohati Syah, Nur Rikswan Tariz Zharfan ME Thamrin Usman Thamrin Usman Titik Lestari Titin Anita Zahara Titin Anita Zahara Titin Anita Zahara, Titin Anita Titin Anita Zaharah Tria Susanti Uci Pradina Warsi Kurnia Rahayu Warsidah Warsidah Wibowo, M. Agus Wibowo, Muhamad Agus Widiyananta, Surya Winda Rahmalia Yamin, Bohari Mohd. Yoga Pratama Yudhi Zaharah, Titin Anita

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