Browsing Skripsi Sarjana by Submit Date
Now showing items 1-20 of 190
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Analisis Kandungan Timbal (Pb) pada Permen dan Bungkus Permen yang Sering Dikonsumsi oleh Anak-anak Kecil Secara Spektroskopi Serapan Atom (SSA)
(Universitas Sumatera Utara, 2016)It has been carried out the analysis of lead (Pb) in candies and candy packages. This candy is often consumed by small children. Samples taken from a minimarket. Samples of candies and candy packages Destruction for sample ... -
Optimasi PH dan Suhu pada Pembuatan Virgin Coconut Oil dengan Penambahan Ekstrak Bonggol Nanas (Ananas Comosus)
(2017)Optimasi pH dan suhu pada pembuatan Virgin Coconut Oil dengan penambahan ekstrak bonggol nanas telah dilakukan. Variabel yang diteliti adalah variasi pH yaitu 6; 6,5; 7; 7,5 dan 8 serta variasi suhu yaitu 40°C, 45°C, ... -
Oksidasi 1,2,3 Propanatriol dengan Molekul Oksigen Menggunakan Katalis Pd/yAl2-O3 dalam Pelarut Air
(Universitas Sumatera Utara, 2009)Telah dilakukan oksidasi terhadap 1,2,3-Propanatriol dengan menggunakan molekul oksigen yang dikatalisis oleh katalis heterogen Pd/γ-Al2O3 dalam pelarut air menghasilkan asam gliserat ( 32,62 % ). Asam gliserat yang terbentuk ... -
Pengaruh Waktu Penyeduhan Bubuk Teh Hijau Kepala Djenggot Terhadap Kadar Tanin dari Air Seduhan Bubuk Teh Hijau Kepala Djenggot
(Universitas Sumatera Utara, 2009)Telah dilakukan penentuan kadar tanin dari air seduhan bubuk teh hijau merek kepala djenggot. Tanin dalam bubuk teh hijau kepala djenggot diekstraksi dengan air panas dengan variasi waktu penyeduhan 4; 6; 8; dan 10 menit ... -
Pembuatan Polimer Superabsorben dari Karboksimetil Selulosa, Pati Biji Nangka dan Alumunium Sulfat Sebagai Agen Pengikat Silang
(Universitas Sumatera Utara, 2019)The superabsorbent polymer has the ability to absorb more water than its dry weight and has a cross-linked structure so it is difficult to dissolve in water . The superabsorbent research has been carried out by crosslinking ... -
Efektivitas Penggunaan Air Leri dalam Menurunkan Kadar Formalin pada Produk Makanan Tahu
(Universitas Sumatera Utara, 2019)The effectiveness of leri water in reducing the levels of formaldehyde contained in tofu food products has been carried out. The tofu sample used was formalin soaked tofu for 1 hour. Immersion of formalin tofu samples was ... -
Pemanfaatan Arang Aktif Tempurung Kelapa dalam Pembuatan Sabun Padat dari Minyak Goreng Bekas
(Universitas Sumatera Utara, 2019)Research on the utilization of coconut shell activated charcoal in the manufacture of solid soap from used cooking oil by adding variations in the concentration of coconut shell activated charcoal by 3%, 5%, 10% and without ... -
Sintesis Kopolimer Pati Sukun (Artocarpus communis) PEG 4000 Menggunakan Asam Sitrat Sebagai Agen Pengikat Silang
(Universitas Sumatera Utara, 2019)Modification of Starch copolymers with PEG 4000 using citric acid as a crosslinking agent, copolymers were synthesized by reaction between breadfruit starch (Artocarpus communis) and PEG 4000 and citric acid as cross-linked. ... -
Analisa Komponen Kimia Minyak Atsiri Daun Beluntas(Pluchea Indica Less.) dan Uji Pestisida Nabati Terhadap Lalat Buah (Bactrocera Sp.)
(Universitas Sumatera Utara, 2018)Essential oil of Beluntas Leaves (Pluche Indica Less) have been isolated with hydrodestilation method use Stahl apparatus. The Beluntas Leaves have hydrodestilation for ± 4-5 hours resulting essensial oil amount 0.26% (w ... -
Uji Aktivitas Antibakteri Ekstrak Metanol, Etil Asetat, n-Heksana dari Daun Benalu Alpukat (Dendrophthoe pentandra (L.)oMiq.)
(Universitas Sumatera Utara, 2018)This study aimed to determine the antibacterial activity of methanol, ethyl acetate, and n-hexane extract of avocado parasite (Dendrophthoe Pentandra (L.) Miq.) Obtained by maceration method. Based on phytochemical screening, ... -
Penentuan Kapasitas Adsorpsi Maksimum pada Penyerapan Ion Tembaga Cu (II) Berdasarkan Persamaan Langmuir oleh Trikarboksimetil Selulosa dari Hasil Isolasi Kulit Pisang Nangka (Musa Paradisiaca L)
(Universitas Sumatera Utara, 2019)The absorption of the maximum adsorption capacity on the absorption of copper Cu (II) metal ions based on the langmuir equation by tricarboxymethyl cellulose from the results of the skin extract of skin banana (Musa ... -
Timbal Klorida dari Abu Vulkanik Gunung Mengkatalisis Reaksi Esterifikasi Asam Palmitat dengan Stearil Alkohol
(Universitas Sumatera Utara, 2019)Wax ester namely stearyl palmitate has been synthesized from esterification palmitic acid with stearyl alcohol using catalyst lead chloride synthesized from volcanic ash from Mount Sinabung. The volcanic ash preparated ... -
Analisa Kandungan Kimia, Sifat Fisika, Penentuan Kadar Sineol Minyak Atsiri Daun Eucalyptus pellita dari PT Toba Lestari dengan Metode GC-MS
(Universitas Sumatera Utara, 2019)Eucalyptus pellita leaves are wastes that have the potential as essential oils. Cineol is the main component in Eucalyptus oil which is at 50-60% which can be used as raw material for eucalyptus oil, medicines, perfumes ... -
Inventaris Kandungan Logam pada Sungai Sigarang-garang dengan Menggunakan Metode Spetrofotometri Serapan Atom
(Universitas Sumatera Utara, 2019)Water is the natural resource necessary for the livelihood of the people, even by all living things. Research of the determination of metal content of Iron (Fe), Copper (Cu),Chrome (Cr), and Magnecium mineral (Mg),Calcium ... -
Isolasi Dan Identifikasi Senyawa Fenolik Dari Buah Tumbuhan Bisbul(Diospyros discolor Willd.)
(Universitas Sumatera Utara, 2019)Isolation of phenolic compounds from Bisbul fruit (Diospyros discolor Willd.) has been done by maceration techniquewith methanol solvent. The concentrated extract of methanol dissolved with aquadest and partition extracted ... -
Pengaruh Variasi Metanol dalam Sintesis Material Silika Menggunakan Tetraetilortosilikat (TEOS) dan Template Metil Ester Risinoleat
(Universitas Sumatera Utara, 2019)Silica material has been synthesized with using tetraethylortisilicate (TEOS) as a silica source, methyl ester ricinoleic as template, 3-aminopropyltrimetoxysilane (APMS) as co-structure directing agent (CSDA), and a mixture ... -
Sintesis dan Karakterisasi Kalsium Silikat Bertemplate Metil Palmitat dengan Metode Sol-Gel, Peleburan dan Hidrotermal
(Universitas Sumatera Utara, 2019)Have been synthesis 3 kinds of calcium silicate with addition of methyl palmitate as template with some method such as sol-gel, melting reaction, and hydrothermal to see the influences against its characteristics (pore ... -
Sintesis Senyawa 6-[(N-Iodo-N-Metil-N-Metil-N-Metilamino)Metil]-4-Alil-2-Metoksi Fenol dari Eugenol Melalui Reaksi Mannich dan Metilasi Serta Uji Aktivitas Antibakteri
(Universitas Sumatera Utara, 2019)Eugenol derivative compounds 6-[(N-iodo-N-methyl-N-methyl-N-methylamino)methyl]-4-alyl-2-methoxy phenolwas synthesized through Mannich reaction and methylation. Mannich reaction was carried out by reacting eugenol, ... -
Variasi Rasio Metil Ester Risinoleat sebagai Template dengan TEOS sebagai Sumber Silika dalam Sintesis Material Mesopori Silika
(Universitas Sumatera Utara, 2019)The synthesis of silica mesoporous material has been synthesized using ricinoleic methyl ester as a template, tetraethyl orthosilicate (TEOS) as a source of silica and 3-aminopropyltrimethoxysilane (APMS) as a Co-Structure ... -
Esterifikasi Gliserol dengan Asam Palmitat Menggunakan Katalis Logam dari Abu Vulkanik Sinabung
(Universitas Sumatera Utara, 2019)Palmitic triglyceride esters has been synthesized from esterification palmitic acid with glycerol usingcatalyst metal synthesized from volcanic Mount Sinabun ash.The volcanic ash preparated with addition HCl solution (1N) ...