Department of Chemistry
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Isolasi dan Identifikasi Golongan Senyawa Flavonoida dari Daun Kacangan MB (Mucuna bracteata DC. ex Kurz)
(Universitas Sumatera Utara, 2025)Isolation and identification of flavonoid compounds from the leaves of MB beans (M. bracteata DC. ex Kurz) had been carried out through maceration extraction with methanol solvent. The methanol extracted was concentrated, ... -
Sintesis Basa Schiff Pati Dialdehid dari Buah Sukun (Artocarpus Altilis) Menggunakan Metode Mikrowave Serta Potensinya sebagai Antibakteri
(Universitas Sumatera Utara, 2025)Schiff's base was synthesized through a condensation reaction between dialdehyde breadfruit starch (PD) and ethylenediamine, where PD was obtained from starch oxidation using sodium periodate oxidizer. The formation of ... -
Impregnasi Fe/Ni Pada Mesopori Silika Template Metil Ester Risinoleat Sebagai Adsorben Cr6+ Dengan Variasi Penambahan Massa Fe
(Universitas Sumatera Utara, 2025)Chromium, especially Cr6+, is a heavy metal that is often used in industry can pollute the aquatic environment, and has high toxicity for humans, therefore, Cr6+ must be removed from the aquatic environment. Mesoporous ... -
Analisa Logam Berat Plumbum (Pb) di Lahan Eks-Konsesi Pt TPL Desa Nagasaribu dengan Metode Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES)
(Universitas Sumatera Utara, 2025)This study analyzes the heavy metal Lead (Pb) content in two ex-concession lands with different fertilization and spraying activities. In Land I (last activity in 2020), the highest lead concentration was found at Point ... -
Isolasi Senyawa Flavonoid dan aktivitas Antioksidan Ekstrak Etil Asetat Biji Okra (Abelmoschus esculentus L.) sebagai sediaan Formulasi Face Toner.
(Universitas Sumatera Utara, 2025)Okra fruit (Abelmoschus esculentus L.) from the Malvaceae family has seeds that are thought to have flavonoid secondary metabolite compounds and have antioxidant activity that can be utilized as a preparation for face ... -
Uji Aktivitas Antioksidan Dan Isolasi Ekstrak Etil Asetat Daun Jambu Biji Kristal (Psidium guajava L.) Serta Pemanfaatannya Sebagai Sunscreen
(Universitas Sumatera Utara, 2025)Crystal guava plant (P. guajava L.) is one of the species of the Myrtaceae family that has potential allelopathic properties. This study aims to test the antioxidant bioactivity, determine the SPF value of sunscreen ... -
Aplikasi Entomologi Forensik Menggunakan Serangga Air Untuk Menganalisis Kualitas Air Sungai Sebagai Upaya Peningkatan Kesehatan Ekosistem Sungai Dari Cemaran Logam
(Universitas Sumatera Utara, 2025)Forensic Entomology is a science that utilizes insects in identification. Metals are often found in river water polluted by industrial processes. To separate metals from river water, blood clam shells (Anadara granosa) ... -
Adsorpsi Logam Pb pada Adsorbent Berbasis Karboksimetil Selulosa dan Hidroksipropil Metil Selulosa dengan Divinil Sulfon sebagai Agen Ikat Silang
(Universitas Sumatera Utara, 2025)This study examines the adsorption process of Pb metal on adsorbents based on carboxymethyl cellulose (CMC) and hydroxypropyl methyl cellulose (HPMC) with divinyl sulfone (DVS) as a crosslinking agent. The adsorbent was ... -
Penurunan Kadar Logam Besi (Fe) Menggunakan Karbon Aktif dari Tongkol Jagung (Zea Mays) sebagai Adsorben dengan Variasi Aktivator Asam Fosfat (H3PO4)
(Universitas Sumatera Utara, 2025)Activated carbon is an amorphous compound produced from materials containing carbon. One of the materials that can be used to make activated carbon is corn cob husks which are still underutilized. This research was conducted ... -
Penggunaan Nanopartikel Kitosan untuk Enkapsulasi Penghantaran Bahan Aktif pada Sediaan Facial Cleansing
(Universitas Sumatera Utara, 2025)The development of natural science has given birth to various products in the world of cosmetics, for example facial cleansing. Facial cleansing is a beauty product made from surfactants and active ingredients to cleanse ... -
Pengaruh Variasi Massa Kalium Bromida (KBR) terhadap Sintesis pada Nanosilikon dari Pasir Alam Pantai Cermin secara Magnesiotermik
(Universitas Sumatera Utara, 2021)Synthesis of nanosilicon from natural sand has been carried out with the addition of KBr salt by magnesiothermic method. Silica was extracted from natural sand with the addition of 10 N NaOH and 6 N HCl and analyzed by ... -
Pemanfaatan Ekstrak Etanol Mahkota Nanas (Ananas Comosus L. Merr.) sebagai Antioksidan pada Sediaan Moisturizing Gel
(Universitas Sumatera Utara, 2025)Moisturizing gel is one of the treatments that aims to improve dry skin with ingredients contained in cosmetics. Pineapple crown (Ananas comosus L. Merr) is known to contain flavonoid compounds that have the potential to ... -
Pemanfaatan Zeolit Sintesis dari Limbah Fly Ash Sebagai Adsorben Logam Mangan (Mn) pada Air Sumur Bor di Kawasan Deli Tua
(Universitas Sumatera Utara, 2025)Fly ash waste is a waste that has not received optimal treatment in its utilization until now. Fly Ash has a high Silica (Si) and Aluminum (Al) content so it is suitable to be used as a synthetic zeolite that has an ... -
Formulasi Sediaan Krim Tabir Surya dari Karboksimetil Kitosan dan Penentuan Nilai SPF (Sun Protecting Factor) secara In Vitro
(Universitas Sumatera Utara, 2025)A study has been conducted on the use of carboxymethyl chitosan (KMK) in the formulation of sunscreen cream preparations as a skin protector from excessive sunlight. Sunscreen is a cosmetic ingredient that scatters UV ... -
Sintesis dan Karakterisasi Reduced Graphene Oxide (RGO) Terdoping Nanopartikel Besi Oksida (Fe2O3) sebagai Eletroda Baterai Primer
(Universitas Sumatera Utara, 2025)A study has been conducted on the Synthesis and Characterization of Reduced Graphene Oxide (RGO) Doped with Iron Oxide (Fe2O3) Nanoparticles as Primary Battery Electrodes. The purpose of this study was to analyze the ... -
Sintesis Karbon Dots (CDs) Emisi Ganda Menggunakan Metode Hidrotermal dengan Penambahan Etilendiamin Sebagai Agen Pasivasi
(Universitas Sumatera Utara, 2025)Carbon dots are carbon nanoparticles with sp2/sp3 hybridization structures that exhibit single or dual emission during fluorescence phenomena. Dual-emission carbon dots offer advantageous excitation-emission characteristics ... -
Pemanfaatan Karbon Aktif dari Ampas Tahu dengan Aktivator Natrium Klorida (Nacl) dalam Penurunan Konsentrasi Logam Kadmium (Cd)
(Universitas Sumatera Utara, 2024)The waste produced by tofu dregs contains cellulose compounds which can be used as a basic ingredient in making active carbon. The aim of this research is to determine how to make active carbon by utilizing tofu dregs ... -
Karakterisasi Membran Karet Alam Terdeproteinasi/Polistirena Tersulfonasi dengan Penambahan Divinil Benzena sebagai Pereaksi Pengikat Silang
(Universitas Sumatera Utara, 2024)This research examines the characterization of membranes with the main materials, namely deproteinised natural rubber and sulfonated polystyrene. This research aims to see the characteristic properties of the DPNR-g-MA/sPS ... -
Pemanfaatan Sludge Palm Oil Menjadi Metil Ester Asam Lemak Menggunakan Katalis Enzim Lipase pada Variasi Rasio Molar dan Berat Lipase
(Universitas Sumatera Utara, 2024)Palm Oil sludge has potential as a raw material for producing biodiesel because it contains triglycerides and free fatty acids which can be converted into methyl esters. Research was carried out to utilize palm oil sludge ... -
Peningkatan Kemampuan Adsorpsi Selulosa Bakteri dengan Penambahan Grafena Oksida dari Batubara Sawahlunto Secara Ex-Situ Sebagai Adsorben Rhodamin B
(Universitas Sumatera Utara, 2024)Industrial effluents contain a wide range of water-soluble organic dyes such as rhodamine B (RhB) dye. Therefore, a method to remove RhB is needed, namely by adsorption. Adsorption can be done using BC and BC/GO composites. ...
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