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All Journal Majalah Kulit, Karet, dan Plastik MEDIAN Jurnal Teknologi Pertanian REACTOR : Journal of Research On Chemistry And Engineering SAINTI: Majalah Ilmiah Teknologi Industri
Risma Sari
Politeknik ATI Padang
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Other

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Penentuan Kadar Senyawa Aktif Cyanocobalamine Menggunakan Metode Spektrofotometri UV-VIS Risma Sari; Aisyah Salma Billa
REACTOR: Journal of Research on Chemistry and Engineering Vol 1, No 2 (2020): Published in December 2020
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v1i2.11

Abstract

Cyanocobalmine is vitamin B12 which is widely used to treat or prevent deficiency (deficiency of vitamins) in various types of preparations. Cyanocobalmine in the 5th edition of Indonesian Pharmacopoeia literature can determine by UV-Vis Spectrophotometric method with water solvent. The purpose of this testing was to determine whether the levels of the active compound Cyanocobalamine from the 3 test parameters. In the description test where the sample tested is the same as the Cyanocobalamine specification, namely, crystal powder is dark red. Hot plate was used to determine drying shrinkage. Shrink drying was 2.25% - 2.75% from the ≤ 12% requirement. The determination of the levels of the active compound of Cyanocobalamine fulfills the requirements, namely 96% - 102.0%. The results of the assay showed that the average level of Cyanocobalamine from 4 samples was 96.02%, which met the standards set by the Pharmacopeia. Indonesia Edition V as a requirement for determining the levels of the active compound Cyanocobalamine.
Karakteristik plastik biodegradable dari limbah polipropilena dan pati tandan kosong kelapa sawit melalui metode pencampuran kering Elda Pelita; Tengku Rachmi Hidayani; Risma Sari; Irfan Rusmar; Trisna Yuniarti
Majalah Kulit, Karet, dan Plastik Vol 36, No 2 (2020): Majalah Kulit, Karet, dan Plastik
Publisher : Center for Leather, Rubber, and Plastic Ministry of Industry, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20543/mkkp.v36i2.5841

Abstract

Pemanfaatan limbah plastik polipropilena dan tandan kosong kelapa sawit dilakukan dengan cara mengolah serta menggabungkan limbah plastik polipropilena dengan pati tandan kosong sawit menjadi plastik biodegradable yang mudah terurai di alam. Modifikasi komposisi yang digunakan pada pembuatan plastik biodegradable adalah limbah plastik dan pati tandan kosong sawit adalah (80:20; 70:30; 60:40). Metode pencetakan plastik biodegradable adalah dengan metode kempa tekan panas. Hasil karakterisasi plastik biodegradable dengan komposisi optimum yaitu pada perbandingan 60:40 menunjukkan harga kekuatan tarik 6,54 N/m2 dan kemuluran 2,42%. Hasil analisa sifat biodegradable-nya didapatkan penurunan massa yang telah ditanam selama 1 bulan yaitu pada tanah sampah sebesar 6,78% dan analisa dengan FT-IR ditemukan bilangan gelombang 1165 cm-1 yang menunjukkan gugus fungsi C-O bending yang khas untuk menunjukkan ikatan antara limbah plastik polipropilena ter-grafting maleat anhidrida dan pati yang didukung dengan bilangan gelombang 1590-1560 cm-1 yang menunjukkan gugus fungsi C=C pada maleat anhidrida dan polipropilena yang terikat silang.
PENENTUAN KADAR HASIL PRODUK AlF3 BERDASARKAN PERBEDAAN SUHU DENGAN METODA TITRASI ZIRCONIUM CHLORIDA Risma Sari; Inggardipta Usman
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 16, No 2 (2019): VOL 16 NO 2 DESEMBER 2019
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.833 KB)

Abstract

Non-fertilizer products are functions as added ingredients or manufacturing products in other industries. AlF3 is a non-fertilizer product that functions as an ingredient in the aluminum smelting process. Aluminum fluoride (AlF3) is an inorganic compound used mainly in the aluminum process. AlF3 has a character that is difficult to dissolve in water and slightly soluble in acidic solutions. Determination of AlF3 levels is done by reacting 1 mole of AlF3 with 3 moles of NaF which is known to be excessive. Determination of AlF3 levels is carried out according to company standards namely IK - 39 - 4210 with a limit of acceptance of AlF3 levels of 94%. Sodium Fluoride (NaF) compound which is a colorless solid compound that dissolves easily in water. NaF functions as an AlF3 mixture material that forms the Na3AlF6 reaction. The method used for analysis of AlF3 levels is the Zirconium Chloride (ZrCl4) titration method. ZrCl4 titration is a method of acid-base titration in which the secondary standard solution is acidic and the primary is basic. The ZrCl4 method is very suitable because of its high solubility and acidic nature which can react and bind excess NaF compounds in the Na3AlF6 reaction. The results of determining AlF3 levels at 500 oC were 94.08%, at 550 oC for 30 minutes heating, 95.35%, and at 550 oC heating for 60 minutes at AlF3 94.79%. The results of this test temperature optimization is carried out, a more optimal temperature and a better percentage of AlF3 levels, namely at a temperature of 550 oC and at a heating time of 60 minutes, because at that temperature and time the release of crystal water and free water is more optimal and does not damage AlF3.
STUDY OF ANTI-OXIDANT ACTIVITY TEST ON NATURAL MATERIALS USING 1,1-DIFENYL-2-PIKRILHIDRAZIL (DPPH) Syukri Arief; Risma Sari; Novesar Jamarun; Sumaryati Syukur
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 16, No 2 (2019): VOL 16 NO 2 DESEMBER 2019
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.45 KB)

Abstract

This study aims to determine the anti-oxidant potential found in natural materials. The antioxidant activity test was carried out on several natural ingredients or common plants that have been known and used for generations by the people of Indonesia. Antioxidant activity testing was carried out using DPPH method using IC50 parameters and natural material samples used were virgin coconut oil from coconut plants, Tanjung leaves and bay leaves. Antioxidant activity test showed that the sample of natural materials used had strong antioxidant activity, it was found that IC50 values were between 50-100 ppm.
PENETUAN KADAR ZAT AKTIF PADA FLUOCINOLONE ACETONIDE CREAM DENGAN METODE SPEKTROFOTOMETRI UV- VIS Risma Sari; Khairul Fuad
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 19, No 2 (2022): VOL 19 NO 2 DESEMBER 2022
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (92.618 KB)

Abstract

Fluocinolone Acetonide Cream is a topical medication used to treat itching, redness, dry skin, crusting, inflammation, and discomfort of various skin conditions. This research was conducted to determine the levels of the active substance contained in Fluocinolone Acetonide Cream. Testing the levels of active substances is carried out to ensure the levels of active substances are in accordance with predetermined requirements. The side effect of the active substance is that if the drug has excess levels of the active substance it will endanger the drug user and if there is a deficiency of the active substance, the drug will not have any reaction. at a wavelength of 200-300 nm and the maximum wavelength of the Fluocinolone Acetonide Cream test is 238. The test results for determining the levels of active substances in the sample are 98.99% and 99.14% where the specifications used are between 90% - 110%. These results indicate that the sample levels fall within the specifications established by Pharmacopoeia edition I and II 2009.
VALIDASI METODE PENGUJIAN KADAR UREA DALAM AIR BUANGAN DENGAN PEREAKSI PDAB MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Risma Sari; Ririn Trisna Yusuf
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 15, No 2 (2018): VOL 15 NO 2 DESEMBER 2018
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.484 KB)

Abstract

Urea in water is not very good for the environment and also living things because it can cause odor and can damage body tissues. This study aims to verify the test method of determining urea levels in wastewater with p-Dimethylamino benzaldehyde reagent using UV-Vis Spectrophotometer. The method used in this study is Spectrophotometry. In this research, several verification parameters will be carried out, namely precision, accuracy, linearity and working range, and detection limits and quantization limits. Based on testing these parameters, the CV (Coefficient Variation) value meets the requirements for precision acceptance, namely CV ≤ CV Horwitz. Accuracy results at spike concentrations were 10%, 20%, 30%, 40% and 50%, respectively 102,608%, 106,540%, 101,713%, 106,409%  and 101,171%. The results of the working range and linearity, R2 = 0.9994. Detection limit 0.0089 and quantization limit 0.0297. Based on the results obtained from the verification, the test method of urea content in water meets the requirements and can be used to determine the level of urea in effluent.
PENENTUAN C-ORGANIK PADA TANAH UNTUK MENINGKATKAN PRODUKTIVITAS TANAMAN DAN KEBERLANJUTAN UMUR TANAMAN DENGAN METODA SPEKTROFOTOMETRI UV VIS Risma Sari; Maryam; Rahayu A. Yusmah
JURNAL TEKNOLOGI PERTANIAN Vol. 12 No. 1 (2023)
Publisher : Prodi Teknologi Pangan Fakultas Pertanian Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/jtp.v12i1.2598

Abstract

Karbon merupakan sumber makanan bagi mikroorganisme tanah, sehingga dengan adanya C-organik di dalam tanah akan memacu aktivitas mikroorganisme sehingga dapat meningkatkan proses dekomposisi tanah dan juga reaksi-reaksi bahan organik di dalam tanah. Meningkatkan proses dekomposisi tanah dan juga reaksi-reaksi yang membutuhkan bantuan mikroorganisme. Penentuan kadar C-organik ini dilakukan dengan menggunakan metode spektrofotometri uv vis berdasarkan penelitian yang dilakukan, diperoleh nilai kadar hara C-organik pada sampel tanah dengan kode lab T46-44/21-LA/IRG sebanyak 44 sampel yang dianalisa diperoleh hasil kadar C-organik berkisar antara 0,81-4,08%. Terdapat beberapa kadar C-organik yang berada pada kisaran defisiensi yaitu 1 sampel kategori sangat rendah (<1,00%), 24 sampel kategori rendah (1,00-2,00%) dan 6 sampel kategori tinggi (3,01-5,00%) serta terdapat juga 13 sampel yang berada pada kisaran optimal dengan kategori sedang (2,01-3,00%). Hasil analisis yang diperoleh, kadar C-organik banyak yang berada pada kisaran defisiensi. Kisaran defisiensi (rendah), dampak dari kurangnya kadar C-organik tanah adalah pertumbuhan tanaman yang kurang baik. Agar tanah menjadi baik maka untuk meningkatkan kadar C-organik tanah dan kualitas tanah, maka dilakukan penambahan pupuk kompos atau pupuk urea agar mendapatkan kualitas tanah yang baik dengan kadar C-organik tanah yang baik dengan kadar C-organik tanah sesuai standar.
Bahasa Indonesia Optimasi Kualitas Lem kertas PG 6802 ALV Menggunakan Pendekatan Pengukuran pH, Density, Solid Content dan Viskositas : optimasi kualitas lem kertas Risma Sari; Muhammad Ikhlas Armin; Muhammad Alif Saputra
Median : Jurnal Ilmu Ilmu Eksakta Vol. 16 No. 2 (2024): Jurnal Median
Publisher : Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/md.v16i2.3515

Abstract

Polymers are essential components in various aspects of human life, particularly in the production of different types of materials and products. One of the primary applications of polymers is in the manufacturing of adhesives or glues used to bond various substrates. PG 6802 ALV adhesive, for example, is widely used in the ceramic box industry. This research was conducted to test the characteristics of PG 6802 ALV adhesive in several production batches at PT. XYZ, namely batches 0119LSA001, 0219LSA002, and 0219LSA004. One of the measured parameters was the viscosity of the adhesive using a Brookfield viscometer with a spindle 0.4 at a speed of 10 rpm. The measurement results Brookfield viscometer with a spindle 0.4 at a speed of 10 rpm. The measurement results showed that the viscosity of PG 6802 ALV adhesive ranged between 10500 cps, 10400 cps, and 11600 cps. Additionally, measurements of the adhesive's solid content were obtained in the range of 60.40% to 60.95%. The density of PG 6802 ALV adhesive ranged from 1.0528 to 1.0705 g/ml, while the pH was in the range of 5. In conclusion, this research provides an overview of the physical and chemical characteristics of PG 6802 ALV adhesive in several production batches. The measurement results of viscosity, solid content, density, and pH provide important information for a better understanding of the properties of this adhesive. This knowledge can be utilized for the development of improved products and the enhancement of the production process in the ceramic box industry and other adhesive applications.
PENENTUAN WARNA PADA GULA KRISTAL RAFINASI DENGAN METODE ICUMSA UNTUK JENIS GULA R1 DAN R2 PADA PT. XYZ Risma Sari; Maryam; Putri Adelia
JURNAL TEKNOLOGI PERTANIAN Vol. 13 No. 1 (2024)
Publisher : Prodi Teknologi Pangan Fakultas Pertanian Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/jtp.v13i1.3177

Abstract

Telah dilakukan penentuan warna gula kristal rafinasi dengan metoda ICUMSA untuk jenis gula R1 dan R2 di PT. XYZ. Penelitian ini bertujuan untuk menerapkan metode ICUMSA dalam penentuan warna gula kristal rafinasi, dengan fokus pada gula jenis R1 dan R2. Data analisis warna (colour) diperoleh dan hasilnya menunjukkan bahwa warna gula jenis R1 berkisar antara 23 - 37 IU, sedangkan warna gula jenis R2 berkisar antara 46 - 65 IU. Berdasarkan standar mutu Standar Nasional Indonesia (SNI 3140.2:2011/A.6), kedua jenis gula ini memenuhi persyaratan kualitas warna. Gula jenis R1 memiliki warna yang lebih putih, sementara gula jenis R2 memiliki warna yang agak kekuningan. Selain itu, ukuran partikel gula jenis R1 lebih kecil dan lebih halus dibandingkan dengan gula jenis R2. Selama pengujian, tidak ada perubahan warna yang melebihi standar yang ditetapkan. Hal ini menunjukkan bahwa proses pemurnian gula telah dilakukan secara maksimal, menghasilkan produk berkualitas. Namun, jika nilai warna gula jenis R2 ≤ 80 IU, gula tersebut akan diproses kembali untuk mencapai nilai warna yang memenuhi standar, sehingga dapat meminimalkan kerugian di perusahaan.
Co-Authors Aisyah Salma Billa Elda Pelita Inggardipta Usman Irfan Rusmar Khairul Fuad Maryam Muhammad Alif Saputra Muhammad Ikhlas Armin Novesar Jamarun Putri Adelia Rahayu A. Yusmah Ririn Trisna Yusuf Sumaryati Syukur Syukri Arief Tengku Rachmi Hidayani Trisna Yuniarti