Browsing Undergraduate Theses by Submit Date
Now showing items 1-20 of 1390
-
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Jeruk Nipis (Citrus aurantiifolia (Christm.) Swingle)
(Universitas Sumatera Utara, 2025)Isolation and identification of flavonoid compounds from Lime Leaves (Citrus aurantiifolia (Christm.)Swingle) has been carried out through the maceration extraction stage with methanol solvent. The methanol extract dissolved ... -
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 ... -
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 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 ... -
Sintesis Metil Oleat dari Asam Oleat dan Metanol pada Variasi Rasio Mol dan Konsentrasi Katalis Green Chemistry Deep Eutetic Solvent (DES))
(Universitas Sumatera Utara, 2025)The synthesis of methyl oleate from esterification reactions between oleic acid and methanol used green chemistry deep eutectic solvent (DES) catalyst using homogenizer. DES catalyst is prepared by mixing of choline chloride ... -
Pembuatan Handbody Cream dari Eksktrak Etanol Daun Kemuning (Murraya panicula L Jack) dengan Uji Antioksidan Metode DPPH dan Uji Toksisitas
(Universitas Sumatera Utara, 2025)Handbody cream is a skin care product in the form of cream that is used to moisturize and care for the body skin, including hands, feet, and other body parts. The leaves of Kemuning contain several alkaloid compounds that ... -
Pemanfaatan Ekstrak Kasar Enzim Lipase dari Kecambah Biji Karet (Hevea brasiliensis) sebagai Bahan Aditif Biodetergen
(Universitas Sumatera Utara, 2025)This study aimed to determine the activity of lipase enzyme from rubber seed (Hevea brasiliensis) sprouts and evaluate its application as an additive in biodetergent formulation. The method used in this study included the ... -
Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Kulit Batang Pirdot (Saurauia vulcani Korth.)
(Universita Sumatera Utara, 2025)Isolation and identification of flavonoid compound from the bark of Pirdot (Saurauia vulcani Korth.) had been carried out through the maceration extraction stage with methanol solvent. The methanol extract dissolved with ... -
Pemanfaatan Ekstrak Kasar Enzim Lipase dari Kecambah Biji Jarak Pagar (Jatropha Curcas L.) Sebagai Bahan Aditif Biodetergen
(Universitas Sumatera Utara, 2025)The use of synthetic detergents has caused serious environmental problems due to waste that is difficult to decompose. Utilization of lipase enzymes from castor bean sprouts (Jatropha curcas L.) is one potential solution ...