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Aswat, Muhammad Raihan
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Chemistry

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POTENSI BEBERAPA SUMBER KARBOHIDRAT SEBAGAI BAHAN DASAR PEMBUATAN BIOETANOL MELALUI FERMENTASI Rahman, Fathur; Mahrus, Muhammad Haissul; Fahmi, Miraz’hul; Pratama, Riansyah Dimas; Aswat, Muhammad Raihan; Rizkirullah, Muhammad Aditya; Kartika, Rudi
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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This literature review aims to determine the potential of various carbohydrate sources as raw materials for bioethanol production through fermentation to achieve maximum ethanol concentration. The hydrolysis process is conducted enzymatically using microbes during the liquefaction stage and gluco-amylase during the saccharification stage, followed by fermentation by microbes. The literature results show that the carbohydrate source, Ganyong tuber (Canna edulis Kerr.), produces a maximum ethanol concentration of 84.451% with a fermentation period of 7 days. Keywords: Bioethanol, Fermentation, Hydrolysis, Carbohydrate
Review Artikel: Aktivitas Antibakteri Senyawa Metabolit Sekunder pada Beberapa Ekstrak Tanaman Terhadap Bakteri Gram Positif Jofri, Dirga Hosea Seventeen; Kartika, Rudi; Aswat, Muhammad Raihan; Rizkirullah, Muhammad Adhitya; Kurniawan, Andi; Azka, Andi Aulia Urrahman
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Antibacterials are compounds used to eradicate microbes, especially microbes that harm humans. These antibacterial compounds can be extracted directly from plants, where these extracts contain secondary metabolite compounds that have antibacterial activity. Antibacterial testing is carried out on gram-positive bacteria such as Staphylococcus, Streptococcus and others. The method used in this research was a literature study of 10 national and international articles published in the last 10 years. The articles cited focus on research articles on plants that have the potential as antibacterials of several gram-positive bacteria which include extract solvents, metabolite compound content in extracts and their activity capabilities based on the diameter value of the inhibition zone and/or minimum inhibitory concentration using the disc diffusion method. Keywords : Antibacterial, Diffusion Discs, Gram Positive, Secondary Metabolites
AKTIVITAS ANTIOKSIDAN DAN TOKSISITAS EKSTRAK ETHANOL DAUN BALAKACIDA (Chromolaena odorata L.) Marsella, Virna Rindra; Aswat, Muhammad Raihan; Erwin, Erwin
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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This study aims to determine the content of secondary metabolites and toxicity and antioxidants in Balakacida leaf (Chromolaena odorata L.). The dried Balakacida (Chromolaena odorata L.) leaf samples were extracted through maceration process using 96% ethanol solvent and the maceration filtrate was concentrated using rotary evaporator. Furthermore, the crude extract obtained was carried out phytochemical testing, toxicity test with BSLT method and antioxidant test with DPPH method. Phytochemical results of crude extracts of Balakacida leaf isolates (Chromolaena odorata L.) are positive for alkaloids, steroids, triterpenoids, flavonoids, phenolics and quinones. The results of the BSLT method toxicity test obtained an LC50 value of 42.77 ppm which indicates a very strong level of toxicity. The results of the antioxidant test obtained the actual IC50 value of 31.226 ppm indicate that the Balakacida leaf isolate (Chromolaena odorata L.) has very high antioxidant activity. Based on the results of the antioxidant test, Balakacida leaves (Chromolaena odorata L.) have potential as an antioxidant plant. Keywords : Antioxidant, Balakacida, Toxicity, Chromolaena odorata L
Uji Aktivitas Antibakteri Hasil Fermentasi Bakteri Endofit Umbi Talas (Colocasia esculenta L.) terhadap Bakteri: MINI REVIEW Azka, Andi Aulia Urrahman; Kartika, Rudi; Jofri, Dirga Hosea Seventeen; Rizkirullah, Muhammad Adhitya; Kurniawan, Andi; Aswat, Muhammad Raihan
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Antibacterial agents are substances used to eliminate microorganisms, especially those harmful to humans. These antibacterial compounds can be directly extracted from plants, where the extracts contain secondary metabolite compounds with antibacterial activity. The antibacterial testing is conducted on gram-positive bacteria, such as Propionibacterium, Staphylococcus, and others. The research method employed is a literature review of 10 national and international articles published within the last 10 years. The cited articles focus on studies of plants with potential as antibacterial agents against several gram-positive bacteria, including the extraction solvents used, the metabolite compounds present in the extracts, and their effectiveness based on the inhibition zone diameter and/or minimum inhibitory concentration using the disc diffusion method. Keywords : Antibacterial, Diffusion Discs, Gram Positive, Secondary Metabolites
Co-Authors Andi Kurniawan Azka, Andi Aulia Urrahman Erwin Erwin Fahmi, Miraz’hul Fathur Rahman Jofri, Dirga Hosea Seventeen Mahrus, Muhammad Haissul Marsella, Virna Rindra Pratama, Riansyah Dimas Rizkirullah, Muhammad Adhitya Rizkirullah, Muhammad Aditya Rudi Kartika, Rudi