Browsing Department of Chemistry by Submit Date
Now showing items 1-20 of 2998
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Isolasi dan Identifikasi Golongan Senyawa Flavonoida Dari Buah Jambu Leci (Psidium cattelainum Sabine)
(Universitas Sumatera Utara, 2025-07-17)Flavonoid compounds were isolated and identified from the fruit of the guava (Psidium Cattleianum Sabine). The isolation process involved methanol solvent maceration extraction until a negative FeCl3% was obtained. This ... -
Sintesis 2-Etilheksil Dekanoat dari Esterifikasi 2-Etilheksanol dan Asam Dekanoat Pada Perbandingan Waktu Reaksi dan Kekuatan Mikrowave Menggunakan Katalis Enzim Lipase
(Universitas Sumatera Utara, 2025)Synthesis of 2-Etilhexyl Decanoate from decanoic acid and 2-ethylhexanol by esterification reaction with lipase enzyme catalyst using microwave has been conducted. The parameters studied in this study were the effect ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Iriancis (Impatiens hawkeri W.Bull)
(Universitas Sumatera Utara, 2025)Isolation and identification of flavonoid compounds from the leaves of the Iriancis (Impatiens hawkeri W.Bull) have been carried out through the maceration extraction stage with methanol solvent. Concentrated methanol ... -
Perubahan Morfologi Dari Modifikasi Liquid Natural Rubber - Aspal Menggunakan Emulsifier Triton X - 114
(Universitas Sumatera Utara, 2025)Research has been done on polymer asphalt modification, where asphalt is mixed with Liquid Natural Rubber (LNR) from a mixture of Triton X – 114 and phenylhidrazine. Where the preparation and characterization of Liquid ... -
Sintesis Butil Dekanoat dari Esterifikasi Butanol dan Asam Dekanoat pada Perbandingan Rasio Mol dan Berat Enzim Lipase Menggunakan Radiasi Mikrowave
(Universitas Sumatera Utara, 2025)The synthesis of butyl decanoate from esterification reaction of decanoic acid and butanol using microwave radiation with lipase enzyme as catalyst has been conducted. The parameters investigated in this study were the ... -
Sintesis Carbon Dots dan Nitrogen-Doped Carbon Dots Berbasis Cangkang Kemiri (Aleuritas moluccana) sebagai Bioimaging Candida albicans
(Universitas Sumatera Utara, 2025)Carbon dots (CDs) are fluorescent nanomaterials with particle diameters below 10 nm that can be synthesized from biomass. Candlenut shells are lignocellulosic biomass waste with potential as precursors for CDs synthesis ... -
Potensi Nanopartikel Pati Sukun (Artocarpus altilis) Terasetilasi Sebagai Matriks Enkapsulasi Doksorubisin Hidroklorida
(Universitas Sumatera Utara, 2025)Breadfruit starch (Artocarpus altilis) is a natural biopolymer with promising potential as a matrix for drug encapsulation. This study aimed to synthesize and chemically modify breadfruit starch nanoparticles via acid ... -
Penggunaan Adsorben Carbonated Hydroxypatite (CHA) Berbahan Biowaste Cangkang Kerang Hijau (Perna viridis) dalam Analisa 3,4-Methylenedioxymethamphetamine menggunakan GCMS
(Universitas Sumatera Utara, 2025)Green mussels produce shell waste that negatively impacts the environment. Green mussel shells contain 99.5% calcium. According to data from the North Sumatra Regional Police (Polda Sumut) up to July 2024, there were 2,400 ... -
Sintesis Hijau Nanopartikel TiO2 dari Titanium Tetraisopropoksida Doping Barium menggunakan Ekstrak Daun Kelapa Sawit sebagai Fotokatalis
(Universitas Sumatera Utara, 2025)A study was conducted on the green synthesis of TiO2. This research aimed to green synthesis TiO2 using titanium tetraisopropoxide with palm leaf extract and barium doping to reduce the band gap energy in the degradation ... -
Selektivitas dan Sensitivitas Nitrogen-Doped Carbon Dots Berbasis D-Glukosa Monohidrat yang Disintesis dengan Metode Hidrotermal untuk Deteksi Ciprofloxacin
(Universitas Sumatera Utara, 2025)Peningkatan penggunaan ciprofloxacin (CIP), antibiotik golongan kuinolon, di Indonesia dan global menimbulkan kekhawatiran terhadap resistensi antimikroba dan kontaminasi lingkungan akibat residu obat yang tidak sepenuhnya ... -
Modifikasi Pati Ubi Jalar Putih Melalui Reaksi Oksidasi Menggunakan Natrium Hipoklorit
(Universitas Sumatera Utara, 2025-07-22)Modification of white sweet potato starch were carried out through an oxidation reaction between white sweet potato starch (Ipomoea Batatas Linneaus) and sodium hypochlorite (NaOCl). This research was conducted in two ... -
Optimalisasi Produksi Bio-Oil Melalui Co-Pirolisis Tandan Kosong Kelapa Sawit dan Asam Oleat Dengan Katalis Ni-Fe/Karbon Aktif
(Universitas Sumatera Utara, 2025)The continuously increasing global energy demand and the limited fossil resources had driven the development of renewable energy, one of which was bio-oil from biomass pyrolysis. This study aimed to optimize bio-oil ... -
Sintesis dan Karakterisasi Superabsorben Polimer Berbasis Natrium Karboksimetil Selulosa dan Hidroksietil Metil Selulosa Menggunakan Agen Ikat Silang Asam Adipat
(Universitas Sumatera Utara, 2025)This study examines the synthesis of polymer superabsorbent from sodium carboxymethyl cellulose (Na-CMC) and hydroxyethyl methyl cellulose (HEMC) with adipic acid crosslinking agent. The synthesis of polymer superabsorbent ... -
Analisis Membran Selulosa Asetat Dengan Penambahan Karbon Aktif Termodifikasi Kitosan Penaeus monodon Sebagai Filter Air Dalam Menurunkan Kadar Kromium Heksavalen
(Universitas Sumatera Utara, 2025)Cellulose acetate membranes have relatively low selectivity for heavy metals, particularly hexavalent chromium, achieving only 47.2%. Therefore, the addition of organic or inorganic components is necessary during the ... -
Kinerja Resin Kopolimer Poli(stirena-co-divinilbenzena) Sulfonat sebagai Katalis Heterogen dalam Sintesis Biodiesel dari Asam Oleat melalui Reaksi Esterifikasi
(Universitas Sumatera Utara, 2025)This study aims to synthesize and evaluate the performance of sulfonated poly(styrene-co-divinylbenzene) copolymer resin as a heterogeneous catalyst in the esterification reaction of oleic acid with methanol for biodiesel ... -
Sintesis dan Karakterisasi Material ZIF-67 Terenkapsulasi ZIF-8 sebagai Adsorben Kromium (VI) dengan Vari
(Universitas Sumatera Utara, 2025)Chromium is one of the heavy metals used in the textile industry. Chromium metal (especially hexavalent chromium) has high toxicity and is difficult to degrade in the aquatic environment. Nowadays, adsorption technique ... -
Pengaruh Elektrolit Natrium Klorida terhadap Kinerja Elektroda Grafena Berlapis Nano pada Katoda Baterai Primer
(Universitas Sumatera Utara, 2025)This study aims to investigate the effect of sodium chloride (NaCl) electrolyte concentration on the performance of graphene nanosheet (GBN) electrodes synthesized from candlenut shells as the cathode material in primary ... -
Pembuatan Metil Oleat dari Esterifikasi Asam Oleat dengan Metanol pada Perbandingan Waktu Reaksi dan Kecepatan Pengadukan Peralatan Pendispersi Homogen
(Universitas Sumatera Utara, 2025)The production of methyl oleate from oleic acid and methanol has been carried out through esterification reaction using lipase enzyme as a catalyst and homogenizer stirring. The parameters studied in this study were reaction ... -
Sintesis Biopelumas Ester dari Minyak Goreng Bekas dan Pentaeritritol Menggunakan Green Catalyst/Solvent dan Optimasinya dengan Desain Box-Behnken
(Universitas Sumatera Utara, 2025-07-11)Ester biolubricant has been synthesized from waste cooking oil (WCO) and pentaerythritol by using catalyst and solvent Deep Eutectic Solvents (DESs) and homogenizer. WCO refinery was by addition of 0.05% (v/v) H3PO4 and ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol Pada Variasi Waktu Reaksi dan Kecepatan Pengadukan
(Universitas Sumatera Utara, 2025)The synthesis of methyl oleate was carried out through the esterification reaction of oleic acid and methanol using a K₂O/Zeolite catalyst with a homogeneous dispersing stirrer to determine the optimal conditions for ...