Department of Chemistry: Recent submissions
Now showing items 161-180 of 3020
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Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Buah Turi Merah (Sesbania grandiflora (L.) Poir)
(2024)Isolation of flavonoida compounds contained in red turi fruit (Sesbania grandiflora (L.) Poir) had been carried out by maceration extraction method using methanol solvent. The methanol concentrated extract was then ... -
Adsorpsi Zat Warna Congo Red menggunakan Adsorben Berbahan Dasar Pati Sagu dan Karboksimetil Selulosa Menurut Persamaan Langmuir dan Freundlich
(Universitas Sumatera Utara, 2024-12-30)Research on adsorbents from sago starch and carboxymethyl cellulose with aluminum sulfate and boric acid cross-binding agents applied to the adsorption of congo red dye. This study aims to determine the equilibrium time ... -
Evaluasi Penggunaan Komposit Selulosa Asetat/Karbon Dots sebagai Bahan Pelepasan Obat
(Universitas Sumatera Utara, 2024)Composite materials of cellulose acetate with Carbon Dots (CDs) offer significant potential as efficient drug delivery systems. This study evaluates cellulose acetate/CDs (CA/CDs) composites as drug release materials by ... -
Sintesis 2-Etilheksil Oleat dari Esterifikasi 2-Etilheksil Alkohol dan Asam Oleat pada Perbandingan Rasio Molar dan Berat Enzim Lipase Menggunakan Radiasi Mikrowave
(Universitas Sumatera Utara, 2024)Synthesis of 2-Ethylhexyl Oleate from oleic acid and 2-ethylhexyl alcohol through esterification reaction using lipase enzyme as catalyst and microwave radiation has been conducted. The reaction conditions carried out in ... -
Pembuatan 2-Etilheksil Oleat dari Esterifikasi 2-Etilheksil Alkohol dan Asam Oleat pada Perbandingan Waktu Reaksi dan Daya Mikrowave Menggunakan Katalis Enzim Lipase
(Universitas Sumatera Utara, 2024)The production of 2-Ethylhexyl Oleate from oleic acid and 2-Ethylhexyl alcohol has been performed through esterification reaction using lipase enzyme as catalyst and microwave radiation. The parameters studied in this ... -
Modifikasi Aspal dengan Karet Alam Reaktif: Fungsionalisasi Karet Alam dengan Maleat Anhidrat (MA), Glisidil Metakrilat (GMA) untuk Meningkatkan Kinerja Aspal
(Universitas Sumatera Utara, 2024)Natural rubber biopolymer has the potential to be used as an additive in the manufacture of polymer modified asphalt or rubber asphalt. This study aims to synthesize a reactive polymer based on natural rubber (SIR-20) ... -
Sintesis Nitrogen-Doped Carbon Dots dari Cangkang Kemiri (Aleurites moluccana) sebagai Sistem Penghantar Obat Amlodipine Besylate
(Universitas Sumatera Utara, 2024)Carbon dots (CDs) are fluorescent nanoparticles synthesized from biomass waste. Candlenut shell is a potential biomass waste that is abundantly available with a chemical content of 49.22% holocellulose, 54.46% lignin, and ... -
Optimasi Grafting Mesopori Silika Template Metil Ester Minyak Jarak Menggunakan 3 Aminopropiltrietoksisilan (APTES) sebagai Adsorben Ion Logam Berat
(Universitas Sumatera Utara, 2024)Research has been carried out on the optimization of mesoporous silica template castor oil methyl ester (MS-TMEMJ) grafting using 3-aminopropyltriethoxysilane (APTES) compound. This study aims to evaluate the optimum time ... -
Nanopartikel Pati Sukun (Artocarpus altilis) Termodifikasi Ganda secara Ikat Silang – Oksidasi sebagai Sistem Penghantar Sediaan Oral
(Universitas Sumatera Utara, 2024)Breadfruit (Artocarpus altilis) contains starch up to 8.93 %, and starch has a very wide range of benefits in the industrial world. The physicochemical properties of starch have obstacles when used directly including ... -
Pembuatan Edible Film Antibakteri dari Pati Fosfat Umbut Kelapa Gading (C. Nucifera var eburnea) yang Diinkorporasi dengan Kitosan-Nisin
(Universitas Sumatera Utara, 2024)Edible starch phosphate film was obtained from the starch of ivory coconut shoots (C. Nucifera var eburnea) which was modified by cross-linking using trisodium trimetaphosphate with a weight of 0.9 g of trisodium ... -
Isolasi dan Identifkasi Golongan Senyawa Flavonoida dari Daun Asam Jawa (Tamarindus Indica L.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compounds from Tamarind leaves (Tamarindus indica L) have been carried out. Isolation was carried out using a maceration extraction stage with methanol solvent. The methanol ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Buah Murbei Merah (Morus Rubra L.)
(Universitas Sumatera Utara, 2024)Isolation and identification of flavonoid compounds from red mulberry fruit (Morus rubra L.) has been carried out through several stages, namely maceration extraction with methanol solvent, dissolving with distilled ... -
Pengaruh Penambahan Asam Borat dan Ammonium Polifosfat sebagai Bahan Penghambat Api pada Pembuatan Komposit Kayu Plastik dari Polipropilena-Serbuk Pelepah Kelapa Sawit
(Universitas Sumatera Utara, 2024)Research on the manufacture of plastic wood composites from polypropylene-oil palm frond powder (SPS) with the addition of AB/APP fire retardant has been carried out and this study aims to improve its resistance to fire. ... -
Pembuatan Metil Ester Asam Lemak dari Minyak Sawit melalui Reaksi Transesterifikasi pada Variasi Berat Katalis K2O/SiO2
(Universitas Sumatera Utara, 2024)The production of fatty acid methyl esters from palm oil has been conducted using transesterification reactions, utilizing a catalyst derived from solid waste sludge from the PDAM. The sludge that has been cleaned and dried ... -
Pemanfaatan Kulit Jengkol sebagai Prekursor dalam Sintesis Carbon Dots Doping Sulfur Menggunakan Metode Hidrotermal
(Universitas Sumatera Utara, 2024)The use of jengkol peel which contains phytochemical compounds as a precursor in making carbon dots using the hydrothermal method, and with the addition of sodium disulfite as sulfur doping has been carried out. Synthesis ... -
Pembuatan Metil Ester Asam Lemak melalui Reaksi Transesterifikasi pada Perbandingan Rasio Molar Metanol : Minyak Sawit Menggunakan Katalis K2O/SiO2
(Universitas Sumatera Utara, 2024)The production of fatty acids methyl ester from palm oil has been carried out through transesterification reaction of solid sludge waste from the municipal water supply (PDAM) via impregnation method with KOH to yield ... -
Sintesis Carbon Dots dari Kulit Jengkol dengan Doping Ganda Nitrogen dan Sulfur Menggunakan Metode Hidrotermal
(Universitas Sumatera Utara, 2024)Synthesis of Carbon dots (CDs) from jengkol peel precursors with double doping of Nitrogen and Sulfur using the hydrothermal method has been carried out. Urea and Sodium thiosulfate are used as Nitrogen and Sulfur doping ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida Serta Uji Aktivitas Antibakteri dari Kulit Batang Penda Emas (Xanthostemon Chrysanthus (F.Muell.) Benth.)
(Universitas Sumatera Utara, 2024)The flavonoid compound had been isolated from stem bark of golden penda (Xanthostemon chrysanthus (F.Muell.) Benth.). Isolation was carried out by maceration extraction method with methanol and methanol extract was ... -
Karakterisasi dan Modifikasi Aspal-Karet Alam Cair (LNR) dengan Degradasi Fenilhidrazine Menggunakan Ultraviolet
(Universitas Sumatera Utara, 2024)Natural rubber is a polymer compound that has high elastic properties. The elasticity of natural rubber is very necessary in improving the physical properties of asphalt mixtures. Such long molecular chains are one of ... -
Penentuan Kapasitas Penyerapan Adsorben Berbasis Carboxymethyl Cellulose dan Pati Jagung terhadap Methylene Blue Menurut Persamaan Langmuir dan Freundlich
(Universitas Sumatera Utara, 2024)Research about the adsorption of methylene blue using a biopolymer-based adsorbent from carboxymethyl cellulose and corn starch, cross-linked by aluminium sulfate and boric acid has been carried out. This research objected ...