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All Journal Elkawnie CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Al-Kimia Cyberspace: Jurnal Pendidikan Teknologi Informasi Jurnal Kesehatan Jurnal Biomedika Amina Lingkar : Journal of Environmental Engineering

Muhammad Ridwan Harahap

Universitas Islam Negeri Ar-Raniry Banda Aceh

Author-ID : 513412

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Medicine & Pharmacology Public Health Other

Published : 29 Documents Claim Missing Document

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Elektroforesis: Analisis Elektronika Terhadap Biokimia Genetika Muhammad Ridwan Harahap
CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Vol 2, No 1 (2018)
Publisher : PTE FTK UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/crc.v2i1.3248

Electrophoresis is a method of separation that utilizes the electric field generated from electrodes to separate compounds having a charge of cations or anions. Electrophoresis requires separation media in the form of a stationary phase such as Agarose cells mixed with a buffer solution to maintain the acidity of the sample during the separation process. This tool strongly supports the renewal of research, especially in the field of genetic engineering technology. The result will provide a track record of separation bands of compounds. The speed of molecular motion depends on the ratio (ratio) of charge to its mass, and also depends on the shape of the molecule.

Sel Elektrokimia: Karakteristik dan Aplikasi Muhammad Ridwan Harahap
CIRCUIT: Jurnal Ilmiah Pendidikan Teknik Elektro Vol 2, No 1 (2016)
Publisher : PTE FTK UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/crc.v2i1.764

Abstrak Sel elektrokimia merupakan pemanfaatan arus listrik yang dihasilkan dari sebuah reaksi kimia ataupun arus listrik yang menyebabkan terjadinya suatu reaksi kimia. Pemanfaatan sel elektrokimia banyak digunakan untuk menghasilkan teknologi terbarukan. Sel elektrolisis dan sel Volta merupakan hasil terapan dari sel elektrokimia yang menggunakan media elektroda dan larutan elektrolit. Sampai saat ini, sel elektrokimia masih memiliki peranan penting di dalam kemajuan teknologi modern mulai industri otomotif maupun rumah tangga. Kata kunci:

Pengaruh Karaginan dari Rumput Laut Merah (Eucheuma cottonii) Asal Provinsi Aceh sebagai Edible Coating terhadap Ketahanan Buah Reni Silvia Nasution; Husnawati Yahya; Muhammad Ridwan Harahap
Al-Kimia Vol 7 No 2 (2019): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The coating substance on tomato, apple, and kiwi from carrageenan of Eucheuma cottonii that originated from Aceh was made with additional PEG (polyethylene glycol) plasticizer to increase the fruit shelf life. Carrageenan of Eucheuma cottonii was extracted using 14% alkaline solution (KOH) and precipitated using IPA (isopropyl alcohol). The coating substance was made using various combination of carrageenan (0,1%, 0,2% 0,3%) and PEG (polyethylene glycol) with concentration 0,5% (v/v). Fruit coating process was carried out by immersion until the whole fruit well submerge. The examination was carried out through functional groups identification of carrageenan from Eucheuma cottonii and the coating substance. The coating substance was observed toward fruits resistance to see changes in physical shape and hardness of fruit and used a microscope with 450 times enlargement to observe the fruit surface at 0 day, 6th day, 12th day and 18th day. As the result, carrageenan that extracted from red seaweed (Eucheuma cottonii) shown the suitable structure with the commercial carrageenan. From the observation result, coated fruits resistance which was observed at 12th day shown apple and tomato have a better hardness and physical appearance with 0,3% carrageenan than with 0,1%, 0,2%, and control, meanwhile for kiwi with 0,2% carrageenan.

Edible Film dari Karaginan (Eucheuma cottonii) Asal Aceh, Indonesia : Karakterisasi dengan FTIR dan SEM Reni Silvia Nasution; Muhammad Ridwan Harahap; Husnawati Yahya
Elkawnie: Journal of Islamic Science and Technology Vol 5, No 2 (2019)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v5i2.5567

Edible film karaginan merupakan salah satu alternatif pengganti kemasan plastik yang sulit terdegradasi di alam dan aman bagi bahan pangan. Karaginan merupakan hasil ekstraksi salah satu jenis rumput laut yaitu Eucheuma cottonii. Tujuan penelitian ini untuk mengetahui gugus fungsi dari edible film dengan variasi konsentrasi karaginan dan sifat permukaan dari edible film karaginan dengan SEM. Pemanfaatan karaginan hasil ekstraksi E.cottonii asal Aceh untuk pembuatan edible film diharapkan dapat meningkatkan potensi budidaya E.cottonii di Aceh. Tahapan penelitian dilakukan dengan dua tahap, tahap pertama proses ekstraksi karaginan dari E. cottonii dengan penggunaan KOH 14% dan tahap kedua pembuatan edible film dengan varisi konsentrasi karaginan 0,1%; 0,2%; 0,3% (b/v) dengan penambahan PEG sebagai plasticizer. Hasil FTIR menunjukkan gugus fungsi ester sulfat, ikatan glikosidik, 3,6 anhidro-d-galaktosa, gugus OH dan CH dengan bilangan gelombang berturut-turut pada rentang 1246,36-1246,9 cm-1 , 1072-1074 cm-1, 932-934 cm-1, 3370- 3382 cm-1, dan 2876-2880 cm-1. Perubahan bilangan gelombang edible film karaginan dibandingkan dengan FTIR karaginan hasil ekstraksi pada penelitian sebelumnya menunjukkan adanya interaksi antara karaginan dengan plasticizer PEG yang ditambahkan. Pengujian morfologi pada edible film pada konsentrasi karaginan 0,1% dan 0,2% dengan SEM menunjukkan permukaan yang homogen dan kontinyu, sedangkan pada konsentrasi 0,3% edible film tidak terbentuk.

Identifikasi Daging Buah Kopi Robusta (Coffea robusta) Berasal Dari Provinsi Aceh Muhammad Ridwan Harahap
Elkawnie: Journal of Islamic Science and Technology Vol 3, No 2 (2017)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v3i2.2770

Telah dilakukan penelitian tentang identifikasi daging buah kopi Robusta (Coffea robusta) yang berasal dari provinsi Aceh. Sampel yang digunakan berasal dari Kabupaten Aceh Tengah dan Kabupaten Gayo Lues. Metode identifikasi meliputi skrining fitokimia, analisis kadar air dan analisis kadar timbal (Pb). Untuk pengujian skrining fitokimia daging buah kopi berasal dari kabupaten Aceh Tengah diperoleh hasil kandungan senyawa alkaloid, flavonoid dan polifenol, sedangkan untuk kabupaten Gayo Lues diperoleh kandungan senyawa alkaloid, flavonoid, terpenoid dan polifenol. Pada pengujian analisis kadar air pada daging buah kopi robusta asal Kabupaten Aceh Tengah sebesar 78 %, sedangkan Kabupaten Gayo Lues sebesar 90 %. Kemudian analisis kadar timbal, untuk kabupaten Aceh Tengah diperoleh sebesar 0,0984 ppm dan kabupaten Gayo Lues sebesar 0,0783 ppm.

Chemical Analysis of Environmental Conditions of Seaweed Culture In Pulo Raya, Kabupaten Aceh Jaya, Aceh Province Muhammad Ridwan Harahap
Elkawnie: Journal of Islamic Science and Technology Vol 4, No 2 (2018)
Publisher : Universitas Islam Negeri Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v4i2.4457

Research has been carried out on the analysis of the environmental conditions of seaweed cultivation in the Pulo Raya area of Aceh Jaya Regency, Aceh Province. Aceh Province is the westernmost province of the Indonesian archipelago. Geographically, Aceh is a peninsula area of the island of Sumatra which is directly bordered by the Indian Ocean so that Aceh has several small islands. With this condition, it has the potential to be used as a place for seaweed cultivation. An analysis of environmental conditions is needed to produce good quality seaweed. Examination parameters include pH, temperature, heavy metal content, COD and salinity. Sample examination is carried out based on Standar Nasional Indonesia (SNI) No. 7578.1: 2010 and Decree of the Minister of Environment (KemenLH) No. 51: 2004. The results obtained showed a pH level of 6.22; temperature of ± 28 oC; levels of lead metal ions (Pb (II)) 0.001 ppm and copper (Cu (II) metal ions of 0.002 ppm; The COD level is 137 ppm and the salinity level is 28.75 ppm. With the results of the chemical analysis obtained, the Pulo Raya area is feasible to become a seaweed cultivation area.

Aktivitas Daya Hambat Limbah Daging Buah Kopi Robusta ( Coffea robusta L.) Aceh terhadap Bakteri S.aureus dan E.coli Muhammad Ridwan Harahap
Jurnal Kesehatan Vol 9, No 1 (2018): Jurnal Kesehatan
Publisher : Politeknik Kesehatan Tanjung Karang

Coffee fruit flesh is a waste that coffee farmers use as animal feed only, even though has a composition such as carbohydrates, proteins, fiber, minerals, water, protein, caffeine, and polyphenols. These compositions are very useful for cosmetic and pharmaceutical industries. This study was a research on the use of waste of Aceh’s Robusta fruit flesh (Coffea robusta) on the ability to inhibit the bacteria S-aureus and E.coli as the basic ingredients of the cosmetic face mask of halal products. The samples used were from Takengon city. The skin of the coffee beans was peeled, cleaned and extracted with methanol for about 3 x 24 hours. Further concentrated until obtained extract concentrated. The resulting extracts were tested phytochemically. Variations of extracts concentration on water solvents were 1%, 2%, and 3%. The antibacterial activity was tested by the diffusion method which used the disc. The result showed inhibitory zone to E.coli bacteria at 1%, 2%, 3% concentration were 6,5 mm, 7.2 mm and 7.8 mm respectively. While in S.aureus at a concentration of 1%, 2%, 3% were 15.1 mm, 15.3 mm and 15.5 mm respectively. The best variation of the concentration of Robusta coffee fruit flesh extract (Coffea robusta) in this study on the growth of S-aureus and E.coli bacteria was 3%.

REVIEW OF INFORMATION TECHNOLOGY UPDATE ON QUALITY CONTROL AND QUALITY ASSURANCE OF HALAL PRODUCTS Muhammad Ridwan Harahap
CYBERSPACE: Jurnal Pendidikan Teknologi Informasi Vol 2, No 1 (2018)
Publisher : UIN Ar-Raniry

Technological developments are very rapid but it does not necessarily with the renewal of information technology to the public due to the limited differences in public interest. Indonesia is one of the most populous countries in the world with the majority of the Muslim population. In line with that, the Muslim community highly upholds the values of Islamic teachings contained in the Qur'an one of the concept of Halalan Toyyiban. Information that is rarely accepted by the public is the halal principle of an industrial product, whether food, beverage, cosmetic or other manufacturing industries. This is also supported by the human lifestyle factors on goods from outside the country regardless of the origin of the goods. As a predominantly Muslim country, it is necessary to have simple and accurate information on the use of materials in an industrial product to determine the absence of an industrial product. One of them is the use of derived compounds or single compounds derived from pigs. From several research results that have been done, obtained the image pattern from the examination result of the sample. So that people can easily obtain information about the source of materials used in everyday life.

ANALISIS KADAR AIR DAN FLASH POINT PADA SAMPEL PELUMAS BEKAS DI PT. PUPUK ISKANDAR MUDA Muhammad Ridwan Harahap; Mursidah; Alfizatunnisa
AMINA Vol 3 No 1 (2021): April 2021
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/amina.v3i1.1949

Pelumas merupakan penopang utama dari kerja sebuah mesin, bahkan juga menentukan performa dan daya tahan mesin. Penurunan kualitas pelumas tersebut akan sangat membahayakan kerja mesin sehingga harus dilakukan penggantian dengan pelumas baru. Adapun tujuan dari praktek kerja lapangan ini yaitu untuk menentukan kadar air dan flash point yang terdapat pada pelumas bekas. Parameter-parameter yang dapat dilakukan untuk mengetahui mutu pelumas adalah viskositas, flash point, fire point, kadar air, bilangan basa dan bilangan asam. Parameter tersebut akan mengalami perubahan jika terjadi kerusakan pada pelumas yang disebabkan adanya partikel asing yang terlarut, proses oksidasi, peningkatan partikel tidak larut. Dari analisis diperoleh hasil bahwa pelumas dengan tipe sample ISO VG68 dari item 51-102 J dapat digunakan kembali karena hasil yang diperoleh masih memenuhi spesifikasi, dengan kadar air sebesar 0,08 % dan flash point 248

PENENTUAN FLASH POINT, DENSITAS DAN WARNA BIOSOLAR (B30) TOO7 FT SABANG DAN SPBU CV. TOSAKA ABADI SABANG MENGGUNAKAN METODE ASTM D-93 Muhammad Ridwan Harahap; Rahmat Abrasyi; Vander Hens Lumban Tobing
AMINA Vol 3 No 2 (2021): August 2021
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/amina.v3i2.2001

Biosolar merupakan kombinasi bahan bakar minyak bumi dengan bahan bakar yang berasal dari tumbuhan. Kombinasi ini berfungsi untuk mengurangi ketergantungan terhadap sumber energi yang tidak dapat diperbaharui. Perlu dilakukan pengujian terhadap kombinasi ini dengan tujuan adalah untuk mengetahui kualitas biosolar (B30) dengan analisis titik nyala (flash point), densitas dan warna biosolar (B30). Sampel biosolar yang digunakan berasal dari SPBU dan PT. Pertamina. Hasil penelitian menunjukkan bahwa bahan bakar biosolar (B30) bahan tersebut memiliki flash point sebesar 52 oC. Sedangkan densitasnya pada batas minimal 0,800 Kg/m3 dan warna yang diperoleh warna kuning.

Co-Authors Abad, Farhan Abdul Chalik Nasution Agustania, Annisa Amnur Agustiar, Sahri Aisyah, Novila Akhi Nurul Agusti Alfizatunnisa Amanda, Lola Dhea Andi Via Putra Ultama Anita, Anita Zahara Anjar Purba Asmara Aryadi, M Irvan Bhayu Gita Bhernama Elsa Citra Lestari Febrina Arfi Firda Novita Hilal Badri Husnawati Yahya Khairani, Ana Khairun Nisah Manurung, Dwi Matondang, Asrul Hakim Muammar Yulian Mursidah Mursyida, Waliyam Nadhifa, Husniah Nizar Mauliza Qismullah Rahmat Abrasyi Reni Silvia Nasution Sahri Agustiar Sri Pratiwi Aritonang Sriwahyuni, Dewi Taria Adila Teuku Muhammad Ashari Vander Hens Lumban Tobing Winda Afriani

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