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All Journal Walisongo Journal of Chemistry AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Graha Pengabdian Indonesian Journal of Chemical Science and Technology JUKESHUM: Jurnal Pengabdian Masyarakat Jurnal Farmanesia International Journal of Health and Pharmaceutical (IJHP) FARMASAINKES Journal of Pharmaceutical and Sciences. Obat: Jurnal Riset Ilmu Farmasi dan Kesehatan Indonesian Journal of Science and Pharmacy Jurnal Bakti Nusantara
Dikki Miswanda
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Journal : Indonesian Journal of Chemical Science and Technology

 1 
Kinetics Study of Gold (III) on Chitosan-Silica Coated Magnetic Material Dikki Miswanda; Moondra Zubir; Rini Selly; Siti Rahmah; Nuryono Nuryono
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 5, No 1 (2022): JANUARI 2022
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v5i1.33158

Abstract

A study of the adsorption kinetics of Au(III) ions has been carried out by an adsorbent of silica-chitosan coated magnetic material (BMSK). The BMSK adsorbent was synthesized through a sol-gel process using magnetic materials from iron sand, sodium silicate, and chitosan with 3-chloropropyltrimethoxysilane linker. The adsorption kinetics was studied through batch adsorption system by varying the adsorption time. The number of adsorbed Au(III) ions was calculated based on the difference in metal concentrations before and after adsorption which was analyzed by atomic absorption spectroscopy. The equilibrium of the adsorption of Au(III) ions by the BMSK adsorbent began to occur after the adsorption lasted for 60 minutes. The data shows the interaction of BMSK adsorbent with Au(III) ion following a pseudo order-2 reaction kinetics model with a value of reaction rate constant (k) = 1.199 x 103 g.mg-1.min-1.
Toxicity Test of Windu Shrimp (Penaeus monodon) Skin Chitosan With Brine Shrimp Lethality Test Method Dina Suciati Saragih; Ridwanto Ridwanto; Anny Sartika Daulay; Dikki Miswanda; Haris Munandar Nasution
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 5, No 2 (2022): JULI 2022
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v5i2.37453

Abstract

Chitosan is a modification of chitin compounds that are widely found in the outer skin of crustacean animals such as shrimp and crabs. This research includes isolation of chitin and chitosan: deproteination, demineralization, depigmentation and deacetylation namely transformation of chitin into chitosan, characterization of chitosan, FTIR, and chitosan toxicity test with five concentrations of test solution, namely 100 g/ml, 250 g/ml, 500 g/ml, 750 g/ml and 1000 g/ml using the BSLT method by looking at the number of deaths of Artemia salina L larvae (LC50). The results of tiger prawn shell chitosan (Penaeus monodon) obtained the % degree of deacetylation of 60%. The results of the toxicity test showed that chitosan was not toxic to Artemia salina Leach, indicated by the LC50 value > 1000µg/ml. chitosan windu 4994.16 g/ml, chitosan is not toxic
Cytotoxicity Test of Cocoa Leaf Ethanol Extract (Theobroma Cacao L.) With Brine Shrimp Lethality Test (BSLT) Method Zulmai Rani; Ridwanto Ridwanto; Dikki Miswanda; Rafita Yuniarti; Ani Sutiani; Ricky Andi Syahputra; Reza Irma
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 5, No 2 (2022): JULI 2022
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v5i2.37452

Abstract

Cancer is a disease characterized by uncontrolled cell division and the ability of these cells to invade other biological tissues, either by direct growth in adjacent tissues or by migration of cells to distant sites. The purpose of this study was to determine the class of secondary metabolites contained in the ethanol extract of cocoa leaves and their cytotoxicity by looking at the LC50 value using the Brine Shrimp Lethality Test (BSLT) method. This research includes phytochemical screening of ethanol extract and the BSLT method by looking at the number of deaths of Artemia salina leach larvae (LC50). The results of phytochemical screening tests showed that the cocoa leaves contained flavonoids, alkaloids, tannins, saponins, steroids, and glycosides. The cytotoxicity test with probit analysis showed an LC50 value of 269,15 µg/mL, so it was concluded that the ethanol extract of cocoa leaves was toxic and had potential as an anticancer.
Isolation and Characterization of Hemicellulose from Empty Oil Palm Fruit Bunches Miswanda, Dikki; Savika, Anggraini; Syafirna, Nada; Sitompul, Maysaro; Selly, r; Zubir, Moondra
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 7, No 2 (2024): JULY 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v7i2.63247

Abstract

Isolation and characterization of hemicellulose from empty oil palm bunches have been carried out. The method used in the isolation is alkali extraction with NaOH solvent. Hemicellulose isolated from empty oil palm bunches was analyzed by organoleptic and solubility tests. Functional group analysis was carried out using FTIR, and morphology was performed using SEM. The highest yield of 12.84% was obtained from the variation of 0.5 N NaOH solvent. Organoleptic and solubility tests showed that the characteristics of hemicellulose isolated from empty oil palm bunches were by the characteristics of hemicellulose in general. The FTIR results of hemicellulose showed the specific absorption peaks of OH stretching, C-H stretching, C=O bending, C-OH bending, and C-C stretching. SEM photos show the rough and fibrous shape of the hemicellulose powder surface.
Adsorption of Soluble Ammonia Using A Porous Polymer Composite Cu-(TAC) And Activated Carbon Empty Fruit Palm Oil Zubir, Moondra; Jasmidi; Selly, Rini; Pulungan, Ahmad Shafwan; Miswanda, Dikki; Wardana, Novrizaldi; Rahmah, Siti; Faradilla, Putri; Ramadhan, Dwi Sapri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68729

Abstract

This study aims to determine the stages in the process of making activated carbon, synthesis of porous polymer composites Cu(TAC) and activated carbon composites (KA-Cu(TAC) for adsorption of dissolved ammonia (NH4OH). To know the characterization results of activated carbon and KA- Cu(TAC), as well as knowing the optimum mass, concentration, and contact time of activated carbon KA-Cu(TAC) for the adsorption of dissolved ammonia. The research stages started from Empty Oil Palm Bunches (EFB) used as biosorbents for carbon production at 500oC. The resulting product was activated with H3PO4, then modified with porous polymer Cu(TAC) to make a composite. The KA-Cu(TAC) composite was synthesized by reflux method. Then MOFs, activated carbon and KA-Cu(TAC) composite were characterized by BET. The BET characterization results showed that the successfully synthesized KA-Cu(TAC) composite experienced an increase in surface area.In the NH4OH adsorption process the optimum mass efficiency on activated carbon still increased at 8 grams while the KA-Cu(TAC) composite obtained an efficiency of 36, 6% and optimally at a mass of 4 g. At variations in concentration, the efficiency of the two samples still decreased. And the optimum time efficiency obtained in the NH4OH adsorption process with activated carbon was 70% and the KA-Cu(TAC) composite was 86.6%, both samples were equally optimal at 75 minutes
Co-Authors AA Sudharmawan, AA Agus Junaidi Alexander Sebayang Ani Sutiani Anny Sartika Daulay Asep Trizaldi Aulia Fitri, Aulia Aulia Sari Awanis, Safirah Bambang Hermanto Bambang Hermanto Cut Dian Mala Luthfia D. Elysa Putri Mambang Devi Lestari Dina Suciati Saragih Dinda Sari Utami Efendi, Tania Tiara Faradilla, Putri Fatma Dwi Jati Fithri Pulungan, Ainil Fitri, Raissa Gabena Indrayani Dalimunthe Haris Munandar Nasution Imas Masriah Jasmidi Khairahmi, Khairahmi Kiki Rawitri Liyuza Safira Lubis, Minda Sari Lubis, Seri Lestari Moondra Zubir Moondra Zubir Muflikhah Muflikhah Muflikhah, Muflikhah Nasution, M Pandapotan Nasution, Paujia Nasution, Shamila Sufi Aulia Natasya, Siti Adinda Ningtias, Anggitha Nomi Noviani Novrizaldi Wardana Nur Mutia Rosiati Nurmala, Syandoval Triska Ananda Nuryono Nuryono Pulungan, Ahmad Shafwan Puteri, Cut Intan Annisa Rafika, Intan Maya Rafita Yuniarti Rahayu , Yayuk Putri Rahmadi Ali Ramadhan, Dwi Sapri Ramadhan, Zulkifli Reza Irma Ricky Andi Syahputra Ridwanto Ridwanto Ridwanto Rini Selly Rini Selly, Rini Riski Mulyani, Riski Rosiati, Nur Mutia Saputra, Muhammad Fadhlan Sari, Syilvi Rinda Sari, Tiara Puspita Savika, Anggraini Selly, r Sembiring, Rinawati Siregar, Mutia Nabila Siti Rahmah Siti Rahmah Sitompul, Maysaro SP, Ananda Azzahra Sri Adelila Sari Sri Wahyuni Sulwiyatul K Sani Supiyani, Supiyani Surya, Innaya Tantry Syafirna, Nada Syilvi Rinda Sari Tuzzahra, Safira Yayuk Putri Rahayu Yayuk Putri Rahayu Yuniarti, Rafita Zubir, Moondra Zulmai Rani