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JURNAL KIMIA SAINTEK DAN PENDIDIKAN
Published by Universitas Sari Mutiara Indonesia
ISSN : ""     EISSN : 26153378     DOI : https://doi.org/10.51544/kimia.v6i1
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Materials Science & Nanotechnology
Focus on results study and literature review in the scope of chemistry education and chemistry sciences in the world. Scope: Chemistry Education Analytical chemistry, including new techniques and instrumentation Biochemistry and medicinal chemistry Inorganic chemistry, including main group, transition metal, and f-block compounds, as well as coordination, organometallic, and solid-state chemistry Materials chemistry of hard and soft matter, from the nanoscale upwards Nuclear chemistry and radioactivity Organic chemistry, including synthesis, characterization, and properties of organic compounds, as well as a study of organic reactions and their mechanisms Physical chemistry and chemical physics Sustainable, green, and environmental chemistry Theoretical and computational chemistry
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)
Articles 131 Documents
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PENENTUAN JENIS MEDIA TERHADAP EFEKTIVITAS PERTUMBUHAN JAMUR TRICHODERMA HARZIANUM Riani, Pevi; Futeri, Renny
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.v7i1.3909

Abstract

This study aims to determine a suitable medium for the growth Trichoderma harzianum. The treatments tested were rice media (M1), bran media (M2), corn media (M3), potato media (M4), and rice husk mixed media (M5). The parameters observed in this study were the quality test of conidia density using a microscope and haemacytometer, macroscopic observation of the media for 7 days and microscopic observation of the media to evaluate the media that had the best effectiveness as a medium for propagation of Trichoderma harzianum. The initial isolate of Trichoderma harzianum used had a conidia density of 2,9x109conidia/ml. The results showed that the propagation of Trichoderma harzianum in various media affected the macroscopic, microscopic and conidia density changes of Trichoderma harzianum. Trichoderma harzianum can grow on all treatment media. The bran media is the medium with the highest conidia density compared to other media.
IDENTIFIKASI ANALISIS KADAR KARBOHIDRAT DAN KADAR GULA REDUKSI METODE LUFF SCHOORL DARI HIDROLISIS SELULOSA LIMBAH MENGKUDU (Morinda citrifolia L.) Sari, Nurmala
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.v7i1.3942

Abstract

Dalam penentuan uji kadar karbohidrat , pada sampel limbah buah mengkudu dilakukan analisis, yaitu analisis secara kuantitatif dan kualitatif. Uji analisis yang sudah dilakukan dalam analisis hidrolisis selulosa limbah buah mengkudu secara kualitatif yaitu menggunakan uji benedict sehingga menghasilkan endapan merah bata dan secara kuantitatif menggunakan metode Nelson-Somogyi  menghasilkan kadar gula reduksi sebsar 11.87%. Secara berkelanjutan dilakukan uji penentuan kadar karbohidrat dari hasil hidrolisis  yaitu analisis karbohidrat total dan analisis  gula reduksi  dengan  metode Luff Schoorl.  Akhir penelitian yang sudah dilakukan dari hidrolisis selulosa limbah buah mengkudu, menunjukkan bahwa hasil rata-rata total kadar karbohidrat  yaitu 51. 83% dan hasil gula reduksi rata-rata menurut metode Luff Schoorl adalah 16.52%. Karbohidrat berperan sebagai pemberi rasa manis, penentuan kadar karbohidrat dilakukan dengan mengukur jumlah gula reduksi yang dikandungnya. Rasa manis ini dikarenakan adanya gula reduksi.
MECHANICAL PROPERTIES OF CELLULOSE-BASED EXTRACTED FROM NATA DE COCO Pertiwi, Sherlyna; Tarigan, Malemta; Harahap, Mahyuni; Adiansyah
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.v7i1.3884

Abstract

Paper production is currently important for various community needs due to the use in daily life. The aim of this study is to produce paper cellulose-based extracted from Nata de Coco with the addition of polyvinyl alcohol (PVA) as an adhesive. The paper was produced by using pulp method followed by ultrasonication with variation of ultrasonication from 10 min, 20 min, to 30 min. The sample was characterized in terms of functional groups and mechanical properties. The results showed that the longer the ultrasonication time, the lower the mechanical value. The highest tensile test was obtained at 10 min of ultrasonication with the value of 5.036 MPa.
PROCESSING OF SAWDOW WASTE OF MAHONI AND JATI WOOD AS A MATERIAL GYPSUM CEILING FILLERS WITH POLIVINYL ADHESIVE ALCOHOL Zai, Liver; Halawa, Estetika Niat Iman; Tarigan, Malemta; Gultom, Erdiana; Purwandari, Vivi; Jiamin, Ong Amanda
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.v7i1.3986

Abstract

Along with the increase in population, the need for building materials, namely wood, will increase, thus triggering rampant illegal logging, which will cause floods, landslides, and global warming. One of the efforts made to reduce the use of wood is to make gypsum composite boards. This study aims to utilize mahogany wood waste and jati wood powder as gypsum board fillers. Research has been carried out on processing waste sawdust from mahogany and jati wood as a filling material for making gypsum ceilings with polyvinyl alcohol adhesive by mixing and compacting using a hot compressor at 70o C. Good quality with a density value of 0.82 g /cm3 and absorption capacity of 38.4% complied with SNI 03-2105-2006. Mechanical properties with variations in impact strength (95:5:10) of 19.014 J/m2, flexural strength of variation (95:5) of 395, 446 N/m2, and fracture strength of variation (95:5:5) of 1.7758 N/m2. A Gypsum board was obtained, which did not meet SNI 03-6384-2000 on the gypsum board specification for the results of testing for flexural strength and fracture strength.
PENGARUH KONSENTRASI PEREKAT AMILUM TERHADAP KARAKTERISTIK BRIKET BIOARANG BERASAL DARI HASIL PIROLISIS LIMBAH PADAT INDUSTRI KELAPA Lase, Winta; Purwandari, Vivi; Adiansyah; Tarigan, Malemta; Yiming, Zou
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.v7i1.4448

Abstract

This research is the manufacture of bio-charcoal briquettes derived from the results of pyrolysis of coconut industrial solid waste as well as an analysis of the effect of adhesive concentration on the research results of bio-charcoal briquettes. The purpose of this study was to determine the process of making bio-charcoal briquettes, the quality of the bio-charcoal briquettes and to determine the effect of the adhesive concentration used on the bio-charcoal briquettes as a result of the research. Research has been carried out on processing coconut shell and coconut coir waste with starch adhesive materials using the mixing and printing method with PVC pipes and drying in an oven with a temperature of 90–100 ºC ± 3 hours. Furthermore, the bio-charcoal briquettes were characterized based on the provisions of SNI No.01/6235/2000 which included moisture content, ash content, volatile matter content, bound carbon content, density, specific gravity, burning rate, compressive strength, calorific value with optimum values respectively 11 .46%, 3.81%, 17.60%, 77.26%, 1.2 gr/cm 3 , 1.2× 10 -6 Kg/m 2 .s 2 , 0.108 g/min, 80.680 % , 6,200 cal/g. Bio-charcoal briquettes were also tested for DTA and TGA for bio-charcoal briquettes using adhesive and without adhesive with successive values of -223.20 cal/g, -22.615%, -206.20 cal/g and -29.075%. The best quality bio-charcoal briquettes are found in briquettes with a mixture of 90% charcoal and 10% starch adhesive.
GAMBARAN TELUR CACING TAMBANG PADA TINJA MASYARAKAT YANG BERUSIA 30-40 TAHUN DI DESA ALUE CANANG KECAMATAN BIRUEN BAYEUN KABUPATEN ACEH Siahaan, Maniur Arianto; Sinaga, Eka Margaretha; Sipayung, Apriska Dewi
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (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.v7i2.3861

Abstract

Infeksi telur cacing merupakan salah satu masalah kesehatan bagi masyarakat dunia. Sebagian besar terinfeksi kecacingan terjadi di daerah tropis dengan kelembaban tinggi, terutama menginfeksi masyarakat dengan kebersihan diri dan sanitasi yang kurang. Di indonesia prevalensi kecacingan masih tinggi diantaranya 60%-90% tergantung pada sanitasi lingkungan. Cacing tambang termasuk ke dalam golongan Nematoda Usus. Nematoda Usus berhabitat di saluran pencernaan manusia dan hewan. Tujuan penelitian untuk menganalisis adanya telur cacing tambang pada tinja masyarakat yang berusia 30-40 tahun di Desa Alue Canang, Kecamatan Bireun Bayeun, Kabupaten Aceh Timur. Jenis penelitian bersifat deskriptif dan pemeriksaan laboratorium dilakukan dengan metode flotasi (NaCl 40%). Hasil pemeriksaan tinja petani dengan jumlah sampel 15 orang masyarakat yang berusia 30-40 tahun ditemukan adanya infeksi telur cacing tambang sebanyak 4 orang (26%), dan 11 orang (74%) tidak ditemukan adanya infeksi telur cacing tambang.
STUDI PERHITUNGAN CELAH ENERGI SENYAWA KOMPLEKS BIS (DIBENZOILMETANATO) ZIRKONIUM MENGGUNAKAN METODE SEMI-EMPIRIS PM3 Tembusai, Tariza Humaira; Muhammad Yusuf; Rafsanzani, Muhammad Baghery; Putri Octaviani; Innayah Wulandari; Lulu Arika Reka
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (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.v7i2.4088

Abstract

Kemajuan teknologi memberi dampak pada berbagai hal. Salah satu dampak kemajuan teknologi adalah munculnya inovasi baru dalam bidang kimia, yaitu kimia komputasi yang mengolaborasikan komponen dari konsep-konsep kimia dan eksperimen dengan bantuan perangkat komputer. Pada riset ini, software yang digunakan adalah Hyperchem 8.0. Metode yang digunakan adalah semi-empiris PM3. Penelitian ini bertujuan untuk menghitung nilai celah energi dan panjang gelombang maksimum dari ligan dibenzoilmetana dan senyawa kompleks bis(dibenzoilmetanato) zirkonium. Berdasarkan hasil perhitungan, diperoleh celah energi ligan lebih besar  dibandingkan celah energi senyawa kompleks. Selanjutnya, panjang gelombang maksimum ligan lebih kecil dibandingkan panjang gelombang maksimum senyawa kompleks. Hasil yang diperoleh ini telah sesuai dengan teori, yaitu persamaan energi foton yang menyatakan bahwa energi berbanding terbalik dengan panjang gelombang maksimum.
KINETIKA ADSORPSI ION FOSFAT MENGGUNAKAN BATU KAPUR KECAMATAN SEMANDING KABUPATEN TUBAN Erwanto; Azizah, Aprilia Nur
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (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.v7i2.4636

Abstract

Adanya ion fosfat dalam air dapat menimbulkan kerusakan lingkungan, sehingga dilakukan upaya untuk menghilangkan ion fosfat tersebut. Salah satu yang banyak dikembangkan adalah penggunaan adsorben yang dapat menyerap kandungan ion fosfat dengan bahan yang mudah diperoleh dan dibuat dengan mudah yaitu batu kapur. Penelitian ini bertujuan untuk mempelajari model adsorpsi batu kapur alam asal Kecamatan Semanding Kabupaten Tuban terhadap ion fosfat. Adsorben batu kapur alam diaktivasi secara fisik (Ads1) dan kimia (Ads2) yaitu dengan pemanasan pada suhu 900° selama 4 jam dan penambahan asam sulfat 0,1 M. Barulah dilakukan uji kemampuan adsorpsi batu kapur terhadap ion fosfat. Hasil karakterisasi XRD menunjukkan adanya perbedaan fasa kristal. Batu kapur Ads0 tanpa aktivasi mempunyai fasa kalsit sama dengan Ads1, sedangkan Ads2 mempunyai fasa gipsum. Nilai keasaman (Ka) tertinggi adalah Ads2 sebesar 2,5584 ± 0,0122 mg/g, dan luas permukaan tertinggi adalah Ads1 sebesar 28,6106 m²/g. Sedangkan pola adsorpsi batu kapur mengikuti persamaan isoterm Langmuir, dengan nilai koefisien linier (R²) = 0,9701.
SINTESIS DAN KARAKTERISASI KARBOKSIMETIL SELULOSA (CMC) DARI LIMBAH TANDAN KOSONG KELAPA SAWIT (TKKS) SEBAGAI PENGGANTI CMC INDUSTRI Trisnawita, Yuni; Putri, Elisa
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 8 No. 1 (2024): 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.v8i1.4656

Abstract

Empty palm bunches are industrial solid waste from the manufacture of Crude Palm Oil (CPO). Currently, the number of empty palm bunches is abundant without management, so it is necessary to think about its utilization that is more useful and without causing environmental pollution. This underlies the selection of empty palm bunches as the manufacture of CMC, so as to obtain a more useful result. This study was conducted to determine how to provide Carboxymethyl Cellulose (CMC) and to determine the characteristics of Carboxymethyl Cellulose (CMC) of palm empty bunches produced. the research method of providing CMC is carried out through the process of isolation of α cellulose, delicification, swiling, bleaching, hydrolysis and the process of alkalization and carboxymethylization to produce CMC. CMC is reviewed through the parameters of Degree of Substitution, pH and purity to produce CMC that meets the requirements of SNI CMC quality 1 and SNI CMC muti II. And from the results that have been done CMC Empty Palm Bunches show results that have met the SNI standard 1. For the parameters of the Degree of Substitution 0.7990, pH 7 and purity 99.41%. And the results of FT-IR functional groups of CMC empty palm bunches get the results of O-H, C-H, C-O functional groups. .
IN SILICO STUDY OF ELASTASE ENZYME WITH NAPHTHOQUINONE DERIVATIVES AS LIGAND Farhan, Muhammad Rafiq; Alwi, Ratna Surya; Harahap, Mahyuni; Purwandari, Vivi
JURNAL KIMIA SAINTEK DAN PENDIDIKAN Vol. 7 No. 2 (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.v7i2.4677

Abstract

We simulated 17 molecules classified as Naphthoquinones derivatives with the Enzyme Elastase to observe data regarding energies produced after bonding. These 17 Molecules were Eleutherin, Isoeleutherin, Elacanacin, Eleutherinone, Eleutherol A, Eleutherol B, Eleutherol C, Eleuthinones B, Eleuthinones C, Eleutherine A, Eleutherine B, Eleutherine C, Eleutherine D, Eleutherine E, Eleutherine F, Eleutherine G, Eleucanainones A. To prepare the ligand and protein for docking, we used the Discovery Studio application. For the molecular docking itself, we used the Pyrx application. Regarding interpreting the result, first, we chose the lowest rmsd/ub or rmsd/lb, and then we analyzed the energy result in which the lowest rmsd occurred. The docking results data indicated that all the ligand-enzyme bonding had negative binding affinity energy, but Eleucanainones A produced the lowest energy (Binding Affinity -7.7, mode 1, Rmsd/ub 1.787, Rmsd/lb 3.54), meaning it bound most easily with the enzyme Elastase. This study was only an initial or foundational step and further studies were highly needed for the development of the correlation between the ligands and the enzyme mentioned above.

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