Department of Chemistry: Recent submissions
Now showing items 161-180 of 2907
-
Modifikasi Pati Sukun (Artocarpus altilis) Menjadi Pati Ikat Silang Oksalat
(Universitas Sumatera Utara, 2023)Modification of breadfruit starch oxalic was carried out through a cross- linking reaction between breadfruit starch (Artocarpus altilis) and oxalic acid. This research was conducted in two stages, namely isolation of ... -
Impregnasi Mikroenkapsulasi Ekstrak Buah Andaliman (Zanthoxylum acanthopdium) pada Selulosa Bakteri sebagai Kemasan Makanan Aktif pada Daging Sapi
(Universitas Sumatera Utara, 2023)Beef is prone to spoilage due to bacterial growth, requiring active food packaging that can. extend storage time. Using andalimanfruit extract microencapsulated into bacterial cellulose (SB) can increase SB's ability as ... -
Isolasi Pektin Kulit Jeruk Manis (Citrus sinensis) sebagai Gelung Agent pada Sediaan Gel Moisturizer Ekstrak Kulit Pisang Kepok (Musa paradiciasa L.)
(Universitas Sumatera Utara, 2023)Pectin contained in sweet orange peel can potentially be the basic ingredient of gelling agent in preparations that are useful for reducing the impact of environmental pollution. This study aims to determine the effect ... -
Isolasi Pektin dari Kulit Durian (Durio zibethinus) sebagai Gelling Agent pada Masker Gel Ekstrak Biji Alpukat (Persea americana Mill.)
(Universitas Sumatera Utara, 2023)Durian skin is a waste that can be processed into several products in various fields. Durian skin has a pectin content of ±17%. In the cosmetic and food industries, pectin is used as a geller, binder, stabilizer, and ... -
Efektivitas Nanokomposit ZnO/N-Doped Carbon Nanodots sebagai Fotodegradasi Rhodamin B di Bawah Radiasi Sinar UV
(Universitas Sumatera Utara, 2023)The textile industry in Indonesia is experiencing very rapid development. One of the liquid wastes that are usually produced by the textile industry is Rhodamin B. Therefore, a method is needed to degrade Rhodamin B (RhB), ... -
Karakterisasi Morfologi dari Modifikasi Aspal-Plastik dengan Limbah Polistirena (PS) yang Ter Grafting dengan Maleat Anhidrat dan Dikumil Peroksida
(Universitas Sumatera Utara, 2023)This research examines the modification of polymer asphalt with polystyrene (PS) waste which is carried out in two stages. The first stage is the synthesis of PS through two methods, where the first method is dissolving ... -
Efektivitas Nanokomposit ZnO/N-Doped Carbon Nanodots sebagai Material Fotokatalis dalam Degradasi Metilen Biru di Bawah Radiasi Sinar UV
(Universitas Sumatera Utara, 2023)The growth of the textile industry in Indonesia continues to increase every year, which is accompanied by the use of synthetic dyes such as Methylene Blue and accompanied by the disposal of waste directly into water bodies. ... -
Pembuatan Metil Ester Asam Lemak dari Larva Lalat Tentara Hitam (Black Soldier Fly) melalui Reaksi in Situ Transesterifikasi Menggunakan Peralatan Penghancur Terkontrol
(Universitas Sumatera Utara, 2023)Production of fatty acid methyl esters / biodiesel from black soldier fly larvae has been explopred through in-situ transesterification reaction BSF larvae on parameters catalysts concentration, reaction time, ratio of BSF ... -
Pembuatan Setil Palmitat dari Reaksi Esterifikasi Setil Alkohol dan Asam Palmitat Menggunakan Katalis Enzim Lipase dan Radiasi Mikrowave
(Universitas Sumatera Utara, 2023)Preparation of cetyl palmitate from palmitic acid and cetyl alcohol esterification with commercial lipase enzyme catalyst and reacting it with microwaves has been carried out. The parameters used in this study are the ... -
Karakterisasi Termal dari Modifikasi Aspal dengan Limbah Plastik Polietilena Grafting Maleat Anhidrat dan Inisiator Dikumil Peroksida
(Universitas Sumatera Utara, 2023)Research on the thermal characteristics of asphalt modification with polyethylene (PE) plastic waste grafted with maleic anhydrous and dicumyl peroxide initiator. This research uses 3 stages, the first stage, the used ... -
Sintesis Isopropil Palmitat dari Esterifikasi Isopropil Alkohol dan Asam Palmitat pada Perbandingan Waktu Reaksi dan Kekuatan Mikrowave Menggunakan Katalis Enzim Lipase
(Universitas Sumatera Utara, 2023)Synthesis of isopropyl palmitate from the esterification of isopropyl alcohol and palmitic acid using a lipase enzyme catalyst has been performed using microwave radiation. The parameters studied in this study were the ... -
Pembuatan Isopropil Palmitat dari Esterifikasi Isopropil Alkohol dan Asam Palmitat pada Perbandingan Rasio Molar dan Berat Enzim Lipase Menggunakan Kekuatan Mikrowave
(Universitas Sumatera Utara, 2023)The preparation of isopropyl palmitate (!PP) from palmitic acid and isopropyl alcohol through an esterification reaction under microwave irradiation and catalyzed by enzyme lipase has been studied. The parameters in this ... -
Isolasi dan Identifikasi Golongan Senyawa Fenolik serta Uji Aktivitas Antibakteri dari Kulit Batang Tumbuhan Pucuk Merah (Syzygium myrtifolium Walp.)
(Universitas Sumatera Utara, 2023)The phenolic compound had been isolated from the stem bark of Pucuk Merah (Syzygium myrtifolium Walp. Isolation was carried out by maceration extraction method with methanol and methanol extract was re-extracted with ethyl ... -
Sintesis dan Karakterisasi Karboksimetil Kitosan dengan Nanogold dalam Sediaan Moisture Gel sebagai Whitening Agent
(Universitas Sumatera Utara, 2023)The development of cosmetics from time to time has made significant advances, especially in the preparation of moisture in gel form. Moisture gel is a semisolid system consisting of a suspension made up of small organic ... -
Karakterisasi Paduan EPDM/NR SIR-20 dengan Pengisi Serbuk Cangkang Kerang Darah (Anadara granosa) sebagai Peredam Benturan Pintu Kendaraan (Weather Strip)
(Universitas Sumatera Utara, 2023)Research on composites from the EPDMINR SJR-20 alloy with the addition of blood cockle shell powder as a filler material which is applied as a vehicle door impact absorber (weather strip). Making weather strips is done ... -
Karakterisasi Paduan EPDM /NR dengan Pengisi Serbuk Cangkang Telur Bebek sebagai Peredam Benturan Pintu Kendaraan Roda Empat
(Universitas Sumatera Utara, 2023)The Composite of Ethylene Propylene Diene Monomer alloy with Natural Rubber (EPDM I NR) which is then added duck egg shell powder as a filler material which is applied as a four-wheeled vehicle door impact absorber. The ... -
Ekstraksi Etanol pada Cairan Lambung Mencit Jantan Putih (Mus-musculus) dengan Metode Headspace - Single Drop Microekstraction (HS-SDME) dan Analisis Menggunakan Gas Chromatography (GC)
(Universitas Sumatera Utara, 2023)Ethanol is one of the compounds found in the composition of liquor or the like, with the chemical formula C:H&O. This substance is contained in several types of alcohol, which are produced naturally and industrially using ... -
Pengaruh Variasi Massa Stronsium Oksida Diimpregnasi pada Mesopori Silika sebagai Katalis Reaksi Transesterifikasi Minyak Jarak
(Universitas Sumatera Utara, 2023)Research has been carried out regarding the impregnation of SrO on mesoporous sifica synthesized using templating anionic surfactants. Impregnation was carried out by varying the mass of Sro on mesoporous silica, ... -
Pengaruh NaOH dan Katalis Coal Fly Ash dalam Proses Perengkahan Katalitik Minyak Sawit Mentah (CPO) Menjadi Bahan Bakar Hidrokarbon
(Universitas Sumatera Utara, 2023)Fossil oil reserves are decreasing due to the increase in population and the non- renewable nature of fossil oil, so it is necessary to develop alternative fuels that are environmentally friendly to replace petroleum (fossil ... -
Pembuatan Metil Ester Asam Lemak dari Minyak Biji Teh (Camellia sinensis L.) melalui Reaksi Trans-Esterifikasi dan Pengujian Karakteristik Biodiesel
(Universitas Sumatera Utara, 2023)The production of fatty acid methyl esters (FAME) from tea seed oil (Camellia sinensis L.) through the transesterification reaction has been successfully carried out. Tea seed oil extraction was carried out using n-Hexane ...