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All Journal bionature Chemica: Jurnal Ilmiah Kimia dan Pendidikan Kimia Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Jurnal Matematika & Sains Jurnal Ilmiah Mahasiswa Ekonomi Pembangunan Al-Kimia AkMen JURNAL ILMIAH Jurnal Kartika Kimia Jurnal Ilmiah Wahana Pendidikan Journal of Economics and Regional Science International Journal of Humanities Education and Social Sciences Indonesian Journal of Fundamental Sciences Seminar Nasional Hasil Penelitian LP2M UNM ABDI DAYA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Chemedu: Jurnal Ilmiah Pendidikan Kimia Jurnal Akademik Pengabdian Masyarakat

Muharram Muharram

Jurusan Kimia FMIPA Universitas Negeri Makassar

Author-ID : 323592

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Veterinary Other

Published : 23 Documents Claim Missing Document

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Stereoselektivitas Reaksi Aldol dalam Sintesis C1-C12 Senyawa Epotilon Muharram Muharram; Dieter Schinzer
Jurnal Matematika & Sains Vol 14, No 4 (2009)
Publisher : Institut Teknologi Bandung

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

The retrosynthesis analysis shows that the synthesis of epothilone is built from three main fragments, which are ethyl ketone 5, thiazole 3, and aldehyde 4 fragments. The three fragments are coupled by aldol reaction, esterification or macrolactonisation, and olefin-epoxide metathesis. The aldol reaction was conducted in synthesis of C1-C12 epothilone from ethyl ketone 5 and chiral aldehyde 4a with highly stereoselective (97% ee) at temperature -78 Â°C and used lithium diisopropylamine (LDA) as a base. The ethyl ketone was synthesized from the Î±-bromoester 10 and diethyl ketone 11 with a good yield in each of eight stages of reaction. The chiral aldehyde 4a was synthesized from 6-heptenoic acid 19 through Â six steps reaction and Evans-Auxiliary 21.

Isolasi dan Uji Bioaktivitas Senyawa Metabolit Sekunder Ekstrak N-Heksan Daun Pare (Momordica charantia L.) Muharram, .
bionature Vol 11, No 2 (2010): Oktober
Publisher : Fakultas MIPA UNM

Bittermelon (Momordica charantia L.) is a bioactivity plant that used as a medicine traditional. The purpose of this research is to isolate the bioactivity secondary metabolites of n-hexane extract from the bittermelon leaves and bioassay toward larval shrimp A. salina. Isolation of the secondary metabolites including extraction, fractionation, purification, and identification. Bioassay was conducted to the extract and to mixed fractions (fraction A â€“ G) the results of column chromatography. The results of research showed that the extracts and fractions from bittermelon leaves was toxic to A. salina. The LC50 from extracts bittermelon leaves was 91, 84 ppm. The LC50 for the fractions A and B (steroid) were 38,26 ppm andÂ 85,90 ppm, the fractions C â€“ G (terpenoid) were 94,45 ppm; 79,56 ppm; 92,53 ppm; 70,41 ppm; and 92,69 ppm, the most toxic fractions was fraction of A. From the C-fraction as a green coulor was obtained a crystal and needle-shaped. After recystalization with n-hexane and ethylacetat was obtained a pure compound that positive to terpenoids with Liebermann-Burchard reagents.Â

Isolasi dan Identifikasi Sterol dari Ekstrak n-heksana Daun Meniran Hijau Phyllanthus niruri L. (Euphorbiaceae) Muharram, .; Jannah, Nur
bionature Vol 10, No 2 (2009): Oktober
Publisher : Fakultas MIPA UNM

One of the secondary metabolite, namely a sterol had been iosolated from the n-hexane extract of Phyllanthus niruri L leaves. This compound was obtained by isolation that consist of extaction, fractionation, purification, and identification. The identification covers the melting point test, thin layer chromatography and Liebermann-Burchard test. The research results show that the compound is white needle crystal with the malting point 120-122â°C and positive with Lieberman-Burchard reagens that give blue-green coulor. This compound have not yet been established, because it must be evaluated by spectroscopy.methods. Â Keywords: isolation, Phyllanthus niruri L., sterol, Liebermann-Burchard reagent, spectroscopy method

POTENSI EKSTRAK TUMBUHAN TEMBELEKANG (LANTANA CAMARA LINN.) DALAM MENGHAMBAT PERTUMBUHAN BAKTERI STAPHYLOCOCCUS AUREUS DAN ESCHERICHIA COLI. Iwan, Dini; Muharram, .; Sitti, Faika
bionature Vol 12, No 1 (2011): April
Publisher : Fakultas MIPA UNM

The extract of leaf, fruit and tree bark of tembelekang (L. camara Linn.) as antibacterial activity to Staphylococcus aureus and Escherichia coli has been studied using agar diffusion method. The extract producted with extraction with maseration fraction teqnique. The aim of this research is to show the potential L. camara plant as antibacterial to against Staphylocuccus aureus and Escherichia coli. The research result showed that extract of leaf of L. camara plant having potency as antibacterial and showing that there is a real correlation between the L. camara plant as the medicinal plant and the bioactive compounds contained in it.

Daya Hambat Ekstrak Metanol Daun Sukun (Artocarpus communis Forst) terhadap Pertumbuhan Bakteri Pseudomonas aeruginosa dan Staphylococcus aureus Penyebab Infeksi pada Luka Muharram, .; Ramdani, .; Eviyusmiawati Sius, .
bionature Vol 9, No 2 (2008)
Publisher : Fakultas MIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/bionature.v9i2.112

This research is aimed to know the inhibiting capacity of methanol extact of Artocarpus communis Forst leaves to bacteria that causing infection on wound, i.e. P. aeruginosa and S. Aureus. Therefore, the sensitivity of both bacteria must be examined to methanol extract of Artocarpus communis Forst leaves. The sensitivity test was condsucted by paper disc method. The inhibition zone of methanol extract of Artocarpus communis Forst leaves was founded as a colourless zone that obtained after incubation for 24 hours. It is means P. aeruginosa and S. Aureus are sensitive to methanol extract of this plant. The inhibition zone is shown by methanol extract of Artocarpus communis Forst leaves toward bacteria coloni growth of P. aeruginosa and S. aureus that describing the linear increasing of consentration from 5% to 20%. Â It is shown that Artocarpus communis Forst leaves contains the activity compounds as antibacteria, especially P. aeruginosa and S. aureus. Â

Senyawa Alkoloid dari Ekstrak Aseton Daun Sambung Nyawa Gynura procumbens L. (GpL) Darminto, .; Muharram, .
bionature Vol 10, No 1 (2009)
Publisher : Fakultas MIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/bionature.v10i1.261

These research aims to isolate and identify alkaloid compound in acetone extracts from sambung nyawa leafs Gynura procumbens L. This compound obtained trough keeping the plant and isolation. The isolation consists of extraction, fractionation, purification, and identification. The identification consists of melting point test, three phase system test, and Dragendorf test. The results of the research are: 90 mg of white crystal with the range of its melting point is 134-1360 C. The crystals indicate positively with Dragendorf test. These results indicate that the compound can be classified in the alkaloid compound. Â Keywords: alkaloid, acetone, Gynura procumbens L.

Isolasi dan Identifikasi Senyawa Metabolit Sekunder Ekstrak n-Heksan dari Umbi Lobak (Raphanus Sativus Lamk) Ummi Zahra; Muharram Muharram; Asriani Ilyas Asriani Ilyas
Al-Kimia Vol 1 No 1 (2013): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Isolation and identification of secondary metabolite compound in extract of n-Hexane in Umbi Lobak (Raphanus sativus Lamk) have been carried out. The purpose of this research is to know secondary metabolite compound which is contained in Umbi Lobak (Raphanus sativus Lamk) which obtained from Gowa. The compound was obtained by isolation process that consists of several steps including extraction, fractination, purification, and identification. Extraction was carried out using maceration with n- hexane. The identification has done by phytochemistry test, melting point, solubility, TLC, and IR spectroscopy. The result of research found out that the obtained compound was the steroid compound, with melt point 133-133,5 oC and had positive reaction toward Lieberman Burchad reagents, where the Lieberman Burchad reagent resulting is green which perfectly solved in n-hexane, bit solved in methanol, and could not be solved in aceton. TLC analysis showed a stain in three scales different solvent and the result of elucidation structure in IR spectrophotometer showed that compound which get is β sitosterol.

DAMPAK PENGGUNAAN MESIN PANEN PADI (COMBINE HARVESTER) TERHADAP PENDAPATAN PETANI DI KECAMATAN GLUMPANG TIGA KABUPATEN PIDIE Muharram Muharram; Raja Masbar
Jurnal Ilmiah Mahasiswa Ekonomi Pembangunan Vol 3, No 3 (2018): Agustus 2018
Publisher : Fakultas Ekonomi dan Bisnis UNSYIAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.329 KB)

AbstrakPenelitian ini bertujuan untuk mengetahui dampak penggunaan mesin panen padi (Combine Harvester) terhadap pendapatan petani di Kecamatan Glumpang Tiga, Kabupaten Pidie. Penelitian menggunakan data primer melalui observasi dan kuisioner . Penelitian ini dilakukan di Glumpang Tiga, Kabupaten Pidie dengan mengambil sampel dari 4 Kemukiman yaitu Kemukiman Teupin Raya, Kemukiman Aron, Kemukiman Lambaro dan Kemukiman Glumpang Minyeuk dengan jumlah sampel sebanyak 100 responden. Model penelitian ini menggunakan analisis pendapatan usaha tani. Disamping itu, penelitian ini juga melihat efisiensi usaha tani dengan menggunakan model Return Cost Ratio (R/C Ratio) serta efisiensi penerapan tekhnologi baru dengan menggunakan model Marginal Benefit Cost Ratio (MBCR) Hasil penelitian menunjukkan bahwa pendapatan responden meningkat setelah menggunakan Combine Harvester dan sangat efisien karena hasil Return Cost Ratio lebih dari satu dengan Marginal Benefit Cost Ratio sebesar -3,22.Kata Kunci : Pendapatan usaha tani, Combine Harvester, Mekanisasi Pertanian

Respon Pertumbuhan dan Hasil Tanaman Kubis (Brassica oleraceae L.) Varietas Sehati F1 Akibat Pemberian Pupuk Limbah Jamur Tiram Dicki Mulyana; Muharram Muharram; Darso Sugiono
Jurnal Ilmiah Wahana Pendidikan Vol 7 No 2 (2021): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

This study aims to obtain a response to plant growth and yield of the Sehati F1 variety of cabbage (Brassica oleraceae L.) due to the application of oyster mushroom waste fertilizer. The research was conducted in Cikampek Utara Village, Kota Baru District, Karawang Regency, West Java Province. The time of the experiment was carried out from August 2020 to October 2020. The research method used the experimental method with a single factor randomized block design (RBD). There were 9 treatments and repeated 3 times, so there were 27 experimental plots. The treatments were: A = 0 ton / ha without being given oyster mushroom waste fertilizer, B = 10 tonnes / ha of oyster mushroom waste fertilizer, C = 15 ton / ha Oyster mushroom waste fertilizer, D = 20 tons / ha oyster mushroom waste fertilizer, E = 25 tons / ha oyster mushroom waste fertilizer, F = 30 tons / ha oyster mushroom waste fertilizer, G = 35 tons / ha oyster mushroom waste fertilizer, H = 40 tons / ha of oyster mushroom waste fertilizer, I = 45 tons / ha. Observation data were analyzed using analysis of variance and further tested with DMRT at the 5% level. From the results of this experiment, the application of oyster mushroom waste fertilizer and NPK fertilizer had a significant effect on leaf area with yield (213.91) on the application of oyster mushroom waste fertilizer 15 tonnes / ha and had no significant effect on the growth of leaf number, plant height, stemt. The treatment of oyster mushroom waste fertilizer and NPK fertilizer has not been able to increase the yield of the Sehati F1 variety of cabbage.

A Synthesis Nanosilica of Bamboo’s Leaf (Bambusa Sp.) by Using Hydrothermal Method Hasri Hasri; Muharram Muharram; Fauziah Nadwo
Jurnal Kartika Kimia Vol 3 No 2 (2020): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, Jenderal Achmad Yani University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v3i2.56

Keberadaan tanaman bambu sangat banyak di Indonesia. Bagian yang paling banyak dimanfaatkan adalah bagian batangnya sedangkan daunnya dibiarkan menjadi limbah. Padahal kandungan silika pada daun bambu cukup tinggi. Telah dilakukan penelitian sintesis nanosilika dari daun bambu dengan menggunakan metode hidrotermal dengan variasi suhu dan waktu. Ada beberapa metode sintesis nanosilika, di antaranya sol-gel, kopresipitasi, polymeric gel dan hidrotermal. Metode hidrotermal adalah metode yang paling mudah dalam eksekusinya karena tidak membutuhkan biaya besar namun menghasilkan nanosilika dengan tingkat kemurnian yang cukup tinggi. Hasil menunjukkan nanosilika yang dihasilkan bersifat multifase, yaitu fase cristobalite yang ditandai dengan munculnya peak pada sudut 2θ 23o, 32o, 44o, dan 49o; fase quartz yang ditandai dengan munculnya peak pada sudut 2θ 28o dan 38o; fase coesite yang ditandai dengan munculnya peak pada sudut 2θ 29o dan 33o. Disimpulkan bahwa, suhu dan waktu hidrotermal berpengaruh pada karakteristik nanosilika yang dihasilkan. Ukuran nanosilika terkecil yaitu 15,40 nm terbentuk pada suhu 120oC waktu 6 jam sedangkan ukuran nanosilika terbesar yaitu 27,44 nm terbentuk pada suhu 180oC waktu 6 jam. Kata kunci: daun bambu, hidrotermal, nanosilika

Co-Authors . DARMINTO . Eviyusmiawati Sius . Ramdani Adnan Adnan Ahmad Faqih Ahmad Jihadi Akbar, Ryan Ardika Alimin Alimin Arif Mashuri Asriani Ilyas Asriani Ilyas Assafari, Amir Faqihuddin Citta, Andi Batary Darman Manda Manda Darso Sugiono Diana Eka Pratiwi Dicki Mulyana Dieter Schinzer Dini Iwan, Dini Edison Edison Faridah Faridah Fauziah Nadwo Hasri Hasri Jamhari Jamhari Kinasih Sekar Pamungkas Mashuri, Arif Mirna Ilza Muhammad Basri Muhammad Danial Mukhtar Galib Nova Wulandari Latif Nur Jannah Nurfahraini Nurfahraini Nurshafa Fadhilah Pince Salempa Putro, Guntur Suryo Rahmawati Rahmawati Raja Masbar Ranteta’dung, Rilfan Kasi’ Rommy Andhika Laksono Sitti Faika Sri Rahmadani Sudding Sudding Thanwain Thanwain Ummi Zahra, Ummi Untung Susanto

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