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All Journal JBIO: jurnal biosains (the journal of biosciences) Jurnal Pangan dan Agroindustri Jurnal Pendidikan Kimia (JPKim) Jurnal Prima Medika Sains (JPMS) REACTOR : Journal of Research On Chemistry And Engineering JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Gimelliya Saragih
Medan 20228, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Health Professions Immunology & microbiology Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health

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Pengaruh Dosis Aluminium Sulfat Terhadap Kekeruhan dan Kadar Besi Air Baku pada IPA PDAM X Dimas Frananta Simatupang; Gimelliya Saragih; Martin Siahaan
REACTOR: Journal of Research on Chemistry and Engineering Vol 2, No 1 (2021): Published in June 2021
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v2i1.13

Abstract

One of the first steps in processing river water into drinking water is by removing the turbidity of the river water. Turbidity can be removed by adding a chemical called a coagulant. This study aims to obtain data on how the effect of using coagulant dosage variations in reducing turbidity and iron content in raw water at the water treatment plant (IPA) PDAM X. The study was conducted using the jar test method to determine the dose of aluminum sulfate coagulant in reducing turbidity and colorimetric method using visible spectrophotometry to determine iron content that meets quality standard criteria. The results showed that the higher the coagulant dose, the lower the turbidity and iron content of the raw water. Coagulant doses with up to 30 ppm were able to reduce turbidity with an efficiency of 92.67% and reduce iron levels up 96.10%.
PEMBUATAN BIOPESTISIDA DARI EKSTRAK DAUN SIRSAK (Annona muricata) UNTUK PENGENDALIAN HAMA ULAT API (Setothosea asigna V.Eecke) PADA TANAMAN KELAPA SAWIT (Elaeis guineensis Jacq) Gimelliya Saragih; Benny Rio Fernandez; Yunianto Yunianto; Harmileni Harmileni
JBIO: jurnal biosains (the journal of biosciences) Vol 5, No 1 (2019): Jurnal Biosains
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jbio.v5i1.12331

Abstract

Ulat api (Setothosea asigna V.Eecke) merupakan hama pemakan daun yang terpenting di perkebunan kelapa sawit terutama di Sumatera Utara. Ulat ini dikenal sebagai ulat yang rakus yang sering menimbulkan kerugian di perkebunan kelapa sawit pada tanaman muda maupun tanaman tua. Pada perkebunan kelapa sawit, ulat pemakan daun kelapa sawit umumnya diatasi dengan menggunakan insektisida kimia sintetik yang mampu menurunkan populasi hama dengan cepat, sehingga dapat dihindari terjadinya kerusakan daun lebih lanjut. Walaupun demikian, penggunaan insektisida kimia sintetik secara kurang bijaksana telah terbukti dapat menimbulkan berbagai dampak negatif terhadap lingkungan. Tujuan penelitian ini adalah pembuatan biopestisida dari daun sirsak untuk mengendalikan hama ulat api (Setothosea asigna V.Eecke). Daun sirsak diekstrak dengan pelarut etanol 96%. Ekstrak pekat yang diperoleh diencerkan dengan akuades menjadi beberapa variasi konsentrasi yaitu 10%, 20%, 30%, 40% dan 50%. Hasil uji insektisida menunjukkan ekstrak daun sirsak 30% sudah efektif dalam mengendalikan hama ulat api. Dari hasil tersebut disimpulkan bahwa daun sirsak dapat dimanfaatkan sebagai biopestisida dalam mengendalikan hama ulat api dengan mekanisme racun kontak. 
PENETAPAN KADAR FLAVONOID EKSTRAK RAMBUT JAGUNG MENGGUNAKAN METODE SPEKTROFOTOMETRI UV-VIS Gimelliya Saragih; A Zukhruf Akbari; M Zaim Akbari; Irfan Syahputra
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol 5 No 1 (2021): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (655.424 KB)

Abstract

Indonesia is an agricultural country with extraordinary natural wealth. Indonesia is also the 6th country with the largest corn production in the world. In the city of Medan, there are many corn sellers who do not pay attention to waste from corn such as corn husks and hairs. Corn silk as one part of corn that is not used properly. Hair is just a waste that pollutes the environment. This study aims to analyze the content of corn silk so that it can be applied according to the content contained in corn silk. Corn silk was extracted using the ultrasonication method and 70% ethanol solvent for 1 hour and the thick extract was obtained using a rotary evaporator, then a phytochemical screening test was carried out to determine what secondary metabolites were contained in corn silk using UV-Vis spectrophotometry at a wavelength of 200 -400 nm The results of the phytochemical screening test showed that corn silk contained alkaloids and flavonoids. UV-VIis spectrophotometry using a standard solution of quercetin. The flavonoid content in the corn silk extract sample was 2.99%.
STUDY OF THE ADDITION OF RED PALM OIL (RPO) TO THE SENSORY AND CHEMICAL CHARACTERISTICS OF BEEF SAUSAGE Winny Iftari; Riska Amalia; Agustin Nurya Savitri; Gimelliya Saragih
Jurnal Pangan dan Agroindustri Vol. 10 No. 4: October 2022
Publisher : Department of Food Science and Biotechnology, Faculty of Agriculture Technology, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpa.2022.010.04.2

Abstract

Synthetic antioxidants are widely used to inhibit quality deterioration of the beef sausage. This study utilizes the high carotene content in Red Palm Oil (RPO) as a substitute for vegetable oil in beef sausage. This study aims to determine the sensory and chemical characteristics of beef sausage with the addition of RPO 5%, 10%, and 15%, and obtain the best formulation. Based on the study, it is known that beef sausage with the addition of RPO 10% received the highest overall sensory rating with an average score of 5.35 out of 7. The chemical characteristics of beef sausage include water content, protein content, and fat content that have met the standard of SNI 3820:2015. However, the ash content of beef sausage with the addition of RPO exceeds the maximum ash level that has been set by the SNI. The beta carotene level of beef sausage in the 5% RPO formula was 592.44 ppm, in the 10% RPO formula it was 596.89 ppm, and in the 15% RPO formula, it was 603.56 ppm. The 10% RPO formulation produces beef sausages with the best sensory and chemical characteristics.
PENETAPAN KADAR FLAVONOID EKSTRAK RAMBUT JAGUNG MENGGUNAKAN METODE SPEKTROFOTOMETRI UV-VIS Gimelliya Saragih; A Zukhruf Akbari; M Zaim Akbari; Irfan Syahputra
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 5 No. 1 (2021): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia is an agricultural country with extraordinary natural wealth. Indonesia is also the 6th country with the largest corn production in the world. In the city of Medan, there are many corn sellers who do not pay attention to waste from corn such as corn husks and hairs. Corn silk as one part of corn that is not used properly. Hair is just a waste that pollutes the environment. This study aims to analyze the content of corn silk so that it can be applied according to the content contained in corn silk. Corn silk was extracted using the ultrasonication method and 70% ethanol solvent for 1 hour and the thick extract was obtained using a rotary evaporator, then a phytochemical screening test was carried out to determine what secondary metabolites were contained in corn silk using UV-Vis spectrophotometry at a wavelength of 200 -400 nm The results of the phytochemical screening test showed that corn silk contained alkaloids and flavonoids. UV-VIis spectrophotometry using a standard solution of quercetin. The flavonoid content in the corn silk extract sample was 2.99%.
Aktivitas antibakteri bakteri endofit daun kelapa sawit (Elaeis guineensis) terhadap Escherichia coli dan Staphylococcus aureus Harmileni Harmileni; Gimelliya Saragih; Tengku Rachmi Hidayani; Meutia Mirnandaulia
Jurnal Prima Medika Sains Vol. 5 No. 1 (2023): Edisi Juni
Publisher : Program Studi Magister Kesehatan Masyarakat Universitas Prima Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/jpms.v5i1.3755

Abstract

Mikroorganisme endofit adalah mikroorganisme yang terdapat dalam jaringan tanaman dan memiliki kemiripan sifat senyawa bioaktif dengan tanaman inangnya. Daun kelapa sawit diketahui memiliki aktivitas antibakteri, tetapi penelitian mengenai aktivitas antibakteri bakteri endofitnya belum pernah dilaporkan. Tujuan penelitian ini adalah mengisolasi bakteri endofit dari daun kelapa sawit serta menentukan aktivitas antibakteri terhadap Escherichia coli dan Staphylococcus aureus. Delapan isolat bakteri endofit berhasil diisolasi dari daun kelapa sawit. Satu isolat termasuk bakteri Gram negatif dan tujuh isolat adalah bakteri Gram positif. Analisa morfologi menunjukkan satu isolat berbentuk basil dan yang lain berbentuk kokus. Uji antibakteri menunjukkan satu isolat (IDS18) menunjukkan aktivitas antibakteri yang kuat terhadap S.aureus dengan zona hambat 13 mm, tetapi tidak menunjukkan aktivitas antibakteri terhadap E. coli. Sementara lima isolat yaitu IDS1, IDS10, IDS11, IDS14 dan IDS16 menunjukkan aktivitas yang lemah terhadap E.coli, tetapi tidak memiliki aktivitas terhadap S.aureus. Hasil penelitian menunjukkan bahwa bakteri endofit daun kelapa sawit berpotensi sebagai penghasil senyawa antibakteri. Diperlukan penelitian lebih lanjut mengenai optimasi produksi senyawa bioaktif antibakteri serta karakterisasinya.
PEMBUATAN PENYERAP GAS BUANG KENDARAAN BERMOTOR BERBASIS LIMBAH PADAT KELAPA SAWIT Abdillah Abdillah; Gimelliya Saragih; Muhammad Zaim Akbari; Vivi Purwandari
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3904

Abstract

Polusi udara merupakan masalah yang dihadapi di masa sekarang, kendaraan bermotor menyumbang 70% Polusi udara yang ada di Indonesia. Membran Keramik sebagai penyerap emisi karbon dengan nanokarbon sebagai filler digunakan untuk menyerap gas buang yang dihasilkan oleh kendaraan bermotor. Penelitian ini bertujuan untuk membantu pemerintah dalam mengatasi polusi udara dengan memanfaatkan limbah padat kelapa sawit. Tanah liat sebagai matriks di aktivasi menggunakan KOH, serbuk pelepah sawit sebagai pembentuk pori dan menggunakan nanokarbon sebagai filler yang berasal dari cangkang sawit yang dibuat melalui metode hidrotermal dengan 180oC selama 6 jam dengan pelarut air dengan perbandingan 80:15:5. Campuran di hotpress dengan suhu 120oC dilanjutkan dengan proses furnance dengan suhu 600oC selama 1 jam. menghasilkan kekuatan tarik sebesar 6.475 Mpa. Hasil analisa FTIR membran keramik berpori menunjukan adanya gugus fungsi bahan baku pembentuk membran keramik dan dari hasil analisa DSC membran keramik menunjukan bahwa kemampuan termal penggunaan membran keramik dapat digunakan dibawah temperatur 470oC. Hasil uji data filtrasi (emisi gas buang) pada keramik berpori yang dihasilkan dapat di lihat CO terserap 3,20%, CO2 terserap 5.6% dan HC terserap 418 ppm.
PEMBUATAN NANOKARBON DARI LIMBAH PADAT KELAPA SAWIT MENGGUNAKAN METODE HIDROTERMAL Nelson Silitonga; Nurliana Tarigan; Gimelliya Saragih; Vivi Purwandari; Ahmad Zukhruf Akbari
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 1 (2023): JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Publisher : Program Studi Kimia - Universitas Sari Mutiara Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51544/kimia.v7i1.3906

Abstract

Meningkatnya kesadaran tentang polusi telah menyebabkan pengembangan solusi untuk masalah lingkungan dengan memaksimalkan pemanfaatan biomassa yang berlimpah untuk pembuatan nanokarbon. Penelitian ini bertujuan untuk memanfaatkan limbah padat kelapa sawit menjadi material yang memiliki nilai guna dan nilai ekonomis menjadi nanokarbon dan material yang berteknologi tinggi. nanokarbon yang berasal dari pelepah dan cangkang sawit yang dibuat melalui metode hidrotermal dengan 180oC selama 2 jam dengan pelarut air dan dilakukan metode ultrasonikasi selama 15 menit. Nanokarbon yang didapat  dikarakterisasi menggunakan Fourier Tranform Infrared (FTIR), X-Ray Difraktometer (XRD), dan Particle Size Analyzer (PSA). Dari hasil analisa gugus fungsi menggunakan FTIR telah menunjukan gugus fungsi nanokarbon dan ditemukan perubahan ukuran partikel yang sangat signifikan dari proses sebelum dan sesudah proses hidrotermal, yaitu 895,2 nm menjadi 334,2 nm. Peningkatan volume pori dan luas permukaan partikel masing-masing sebesar 3,5% dan 63% setelah proses hidrotermal.
Unveiling ZrO2/natural zeolite catalytic performance on hydrocracking palm oil mill effluent residue Junifa Layla Sihombing; Herlinawati Herlinawati; Ahmad Nasir Pulungan; Agus Kembaren; Gimelliya Saragih; Harmileni Harmileni; Rahayu Rahayu; Ary Anggara Wibowo
Jurnal Pendidikan Kimia (JPKIM) Vol 15, No 2 (2023): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v15i2.43324

Abstract

Palm oil mill effluent (POME) is the largest liquid waste from crude palm oil production. This liquid waste still contains a lot of chemical components, solid deposits, and oil which is dangerous if released directly into the environment. The residual oil and grease components contained in POME can be further extracted and converted into fuel fractions. This study investigates the conversion of residual oil from POME into fuel fractions through hydrocracking. A ZrO2/Sarulla natural zeolite (SNZ) catalyst was used, characterized by a particle size of 1-1.5 µm, a surface area of 73.3 m2/g, a pore volume of 0.161 cc/g, and a pore diameter of 3.35 nm. The effect of catalyst mass was studied, with the total conversion increasing to a certain extent with increasing catalyst mass, however, an increase in coke formation decreased the product yield. The highest gasoline fraction selectivity was obtained with a catalyst mass of 0.09 wt% (~42%), while the kerosene fraction was most obtained with a catalyst mass of 0.15 wt% (~40%). The liquid product with a catalyst mass of 0.15 wt% had the highest HHV of 44.2 MJ/kg, a 12% increase from the HHV of POME oil residue (39.4 MJ/kg). The results demonstrate the potential of using residual oil from POME as a source for fuel production and the use of natural zeolite-based catalysts as hydrocracking catalysts.Keywords: Biofuel; Hydrocracking; Natural zeolite; Oil extracted; Palm oil mill effluent
Co-Authors A Zukhruf Akbari Abdillah Abdillah Agus Kembaren Agustin Nurya Savitri Ahmad Nasir Pulungan Ahmad Zukhruf Akbari Ary Anggara Wibowo Benny Rio Fernandez Dimas Frananta Simatupang Harmileni Harmileni Harmileni Harmileni Harmileni Harmileni Herlinawati Herlinawati Irfan Syahputra Junifa Layla Sihombing M Zaim Akbari Martin Siahaan Meutia Mirnandaulia Muhammad Zaim Akbari Nelson Silitonga Nurliana Tarigan Rahayu Rahayu Riska Amalia Tengku Rachmi Hidayani Vivi Purwandari Winny Iftari Yunianto Yunianto