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All Journal Jurnal Kimia Mulawarman Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat IJOEP : International Journal of Ecophysiology Jurnal Akademika Kimia JOURNAL OF CHEMICAL NATURAL RESOURCES (JCNaR) Jurnal Akademika Kimia
Tarigan, Juliati
Department Of Chemistry, Faculty Of Mathematic And Natural Sciences, Universitas Sumatera Utara, Medan 20155, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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INKORPORASI VITAMIN E PFAD PADA CAMPURAN GALAKTOMANAN KOLANG-KALING (Arenga pinnata) DAN GUM ACASIA REZA ZULMI; Jamaran Kaban; Juliati Tarigan
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.608

Abstract

Incorporation of vitamin E from palm fatty acid distillate (PFAD) into matrix of mixed gum acacia and galactomannan from Arenga pinnata (kolang-kaling) (GAP) has been studied. Galactomannan extracted from Arenga pinnata was 4.7%. Incorporations were conducted using using 7 gram gum acacia (GA), 1.3 gram vitamin E from PFAD and GAP varied from 0.1 – 0.4 gram in 100 ml total volume. The thickness of the film occurred in the range of 0.600 – 0.780 mm. In the increment of GAP amount the viscosity and stability of film was increased. The best film obtained which most compatible and has viscosity similar with standard of ISO 9001 – 2008 and ISO 22000 – 2005 was from formula 3 contained 0.2 gram GAP. The oncentration of vitamin E determined using gas chromatography was 75.4501%. The composition of vitamin E was tocotrienol 74.41% and tocopherol 25.59%.
Analysis of Melamine on Powdered Milk-Based Diazoation Reactions with Eugenol Reagent By Spectrophotometry Juliati Br Tarigan
Journal of Chemical Natural Resources Vol. 2 No. 1 (2020): Journal of Chemical Natural Resources
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.937 KB) | DOI: 10.32734/jcnar.v2i1.9313

Abstract

The analysis of melamine on the milk-based diazotization reaction with eugenol was carried out. The presence of primary aromatic amine on melamine was reacted to sodium nitrite, while chloride acid formed diazonium salt, and then diazonium salt reacts with eugenol to form a colored azo compound. The absorbance was measured spectrophotometrically at a maximum wavelength of 470 nm. Analysis of melamine on the sample milk was determined by using a standard addition method. In this research, the optimization of concentration and incubation time was observed at the maximum formation of azo dyes. The optimization results were obtained at a concentration of eugenol of 9.10-3M, NaNO2 of 9.10-4 M, HCl of 0.25 M, and an incubation time of 5 minutes. The content of melamine in the milk sample was 2.513.10-5 M.
The Potential of Crude Extract Bromelain Enzyme on Production of Virgin Candlenut Oil (VCdO) Sahfitri W. Nasution; Firman Sebayang; Juliati B. Tarigan
Jurnal Akademika Kimia Vol. 11 No. 4 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i4.pp253-260

Abstract

Virgin Candlenut Oil (VCdO) is carried out enzymatically without using high-temperature heating and does not use organic solvents so it produces an oil with good quality and low FFA levels. Bromelain enzyme is sourced from pineapple hump. This study aims to determine the optimal conditions of the characteristics of VCdO including yield and free fatty acid (FFA) levels. Analysis of the fatty acid composition of VCdO was characterized by Gas Chromatography (GC). The manufacture of VCdO was carried out using 3 parameters, namely variations in time, temperature, and the amount of catalyst (enzyme). Optimization of the yield and FFA levels was determined by the response surface method (RSM) based on the Box-Behnken experimental design with 3 factors and carried out as many as 15 experiments. The optimum yield of VCdO was 51.12% at 37 ℃, 34 hours, and enzyme volume 28 mL. The lowest level of FFA VCdO was obtained at 1.213% at 37 ℃, 12 hours, and enzyme volume 23 mL. The results of VCdO analysis with GC showed that the highest fatty acid content was linoleic acid at 43.73%. The FFA levels have obtained the quality standard of candlenut oil according to SNI 01 -4462 -1998.
Study of Esterification between Oleic Acid and 2-Ethyl Hexanol by using the Microwave Method Hana Melyana Pertiwi Manurung; Juliati Br. Tarigan; Cut Fatimah Zuhra
International Journal of Ecophysiology Vol. 5 No. 2 (2023): International Journal of Ecophysiology
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/ijoep.v5i2.13601

Abstract

Oleic acid is an unsaturated fatty acid, has a rancid odor and the main component of palm oil. To increase the value of oleic acid which has a C18 chain, it has the potential as a raw material for making long chain fatty acid esters. This fatty acid ester from vegetable oil is an emollient ester which is biodegradable which was synthesized with 2-ethyl hexanol using the Microwave method. In the last ten years, the microwave method has been widely used in organic synthesis. This esterification reaction was carried out using a modified home microwave by making a hole on top as a place for the ball cooler equipped with a stirrer, and using an acid catalyst. Characteristics of long chain fatty acid esters will be tested by FTIR and GC-MS. FTIR test results showed absorption of specific functional groups, while GC-MS was able to show the presence of long chain fatty acid ester compounds.
The Potential of Crude Extract Bromelain Enzyme on Production of Virgin Candlenut Oil (VCdO) Sahfitri W. Nasution; Firman Sebayang; Juliati B. Tarigan
Jurnal Akademika Kimia Vol. 11 No. 4 (2022)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2022.v11.i4.pp253-260

Abstract

Virgin Candlenut Oil (VCdO) is carried out enzymatically without using high-temperature heating and does not use organic solvents so it produces an oil with good quality and low FFA levels. Bromelain enzyme is sourced from pineapple hump. This study aims to determine the optimal conditions of the characteristics of VCdO including yield and free fatty acid (FFA) levels. Analysis of the fatty acid composition of VCdO was characterized by Gas Chromatography (GC). The manufacture of VCdO was carried out using 3 parameters, namely variations in time, temperature, and the amount of catalyst (enzyme). Optimization of the yield and FFA levels was determined by the response surface method (RSM) based on the Box-Behnken experimental design with 3 factors and carried out as many as 15 experiments. The optimum yield of VCdO was 51.12% at 37 ℃, 34 hours, and enzyme volume 28 mL. The lowest level of FFA VCdO was obtained at 1.213% at 37 ℃, 12 hours, and enzyme volume 23 mL. The results of VCdO analysis with GC showed that the highest fatty acid content was linoleic acid at 43.73%. The FFA levels have obtained the quality standard of candlenut oil according to SNI 01 -4462 -1998.
PENGGUNAAN PERALATAN PENGUPAS KULIT MANIS KOPI DI DESA BUAH RAYA KABUPATEN KARO Junedi Ginting; Juliati Br Tarigan
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 2 (2017): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.493 KB) | DOI: 10.32734/abdimastalenta.v2i2.2318

Abstract

Kegiatan pengabdian ini telah dilaksanakan dan berjalan dengan baik sesuai dengan tujuan untukmembantu masyarakat petani kopi di Desa Buah Raya untuk mengupas kulit manis kopi dari biji danmemisahkan kulit manis tersebut dari bijinya. Alat yang digunakan yaitu 1 set peralatan yangdilengkapi dengan mesin dengan bahan bakar minyak premium dengan output 1 biji kopi ditampungdalam fiber/ember sedangkan output 2 kulit manis kopi yang ditampung dalam karung goni. Pengujianhasil produksi alat dilakukan dengan memasukkan biji kopi dengan kulit manis ke input alat danoutputnya diperhatikan sesuai dengan yang diharapkan dengan menyetel katup kuantitas input, katuptekanan udara dan tinggi rendahnya gas mesin. Jika penyetelan sudah berada pada posisi yang benardan masih terdapat output yang masih ada kulit manis maka dapat dikupas ulang denganmemasukkannya kembali ke input alat. Hasil pengupasan kulit manis dari biji kopi oleh alat diperolehrata-rata sebesar 92,29% dan 7,1% merupakan kulit manis.
THE ROASTING COFFEE EQUIPMENT WITH AUTOMATIC TEMPERATURE CONTROL AND STEAM / HOT AIR DISPOSAL TO ACCELERATE COOLING PROCESS OF SUPPLY RESULTS IN VILLAGE FRUIT OF REGENCY KARO Junedi Ginting; Aditia Warman; Juliati Br Tarigan
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 3 No. 1 (2018): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (701.868 KB) | DOI: 10.32734/abdimastalenta.v3i1.2342

Abstract

This devotional activity has been carried out and runs well in line with the aim of assisting thecommunity of coffee farmers in Buah Raya Village for the management of coffee beans mainly byway of roasting. The tool used is 1 set of coffee cutting equipment equipped with temperaturecontrol and exhaust vapor / hot air to accelerate the cooling process results from roasting. Testingthe production of the tool is done by inserting the coffee beans to be roasting and then setting thetemperature button on the equipment to the temperature used in accordance with the coffee beansare inserted, after finished activate the exhaust steam / hot air and then wait a while for the coffeebeans are cold. Then move the coffee beans to the aluminum plate box as a shelter.
Co-Authors Aditia Warman Cut Fatimah Zuhra Firman Sebayang Hana Melyana Pertiwi Manurung Jamaran Kaban Junedi Ginting REZA ZULMI Sahfitri W. Nasution