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Kota samarinda,
Kalimantan timur
INDONESIA
PROSIDING SEMINAR KIMIA
Published by Universitas Mulawarman
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
Arjuna Subject : -
Articles 502 Documents
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SINTESIS GLUTAMIDA DARI METIL ESTER MINYAK BIJI KARET (Hevea brasiliensis) DENGAN ASAM GLUTAMAT Citra Uli Sitompul; Chairul Saleh; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Synthesis of glutamide from methyl ester of rubber seed oil (Hevea brasiliensis) with glutamic acid by amidation reaction has been performed. The synthesis process involves extracting, esterification and amidation. The results showed that rubber seed oil content was 39,75%, acid number 20,98 mg KOH / gr and FFA level was 10,472%. Rubber seed oil was previously converted to methyl esters through esterification process so as to obtain a decrease of FFA to 1.34%. The result of GC-MS analysis shows the most dominant methyl ester composition is methyl linoleate which is 43,11%. The amidation process is carried out by reacting the rubber seed oil methyl esters with glutamic acid. Fourier Transform-Infra Red spectrum of glutamide, showing the absorption peak for N-H group at wave number 3429,43 cm-1 and the absorption peak for C=O amide group at wave number 1643,35 cm-1. Keywords: Rubber Seed Oil, Esterification, Amidation, Glutamide.
SKRINING FITOKIMIA DAUN SALIARA (Lantana camara L) SEBAGAI PESTISIDA NABATI PENEKAN HAMA DAN INSIDENSI PENYAKIT PADA TANAMAN HOLTIKULTURA DI KALIMANTAN TIMUR Sri Purwati; Sonja V. T. Lumowa; Samsurianto Samsurianto
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Kalimantan Timur memiliki potensi untuk melakukan pengembangan terhadap budidaya tanaman holtikultura, namun selama ini belum dapat diwujudkan. Salah satu hambatan pada pengembangan budidaya tanaman holtikultura adalah serangan serangga hama yang dapat menurunkan produksi tanaman holtikultura. Penelitian ini bertujuan untuk mengetahui kandungan kimia yang ada pada bahan alam yaitu daun saliara (Lantana camara L) sebagai bahan baku pembuatan pestisisda nabati penekan serangan serangga hama daan insidensi penyakit tanaman holtikultura di Kalimantan Timur. Daun saliara merupakan daun tanaman yang mudah didapatkan di wilayah Kalimantan Timur. Selama ini tanaman tersebut selama dianggap sebagai gulma dan belum banyak dimanfaatkan. Sampel pada penelitian adalah daun saliara yang diambil dari berbagai daerah di Kaltim yaitu Kutai Timur, Kutai Barat dan Kutai Kartanegara, Kalimantan Timur. Sampel daun selanjutnya dikeringkan dan dibuat serbuk. Masing-masing sampel daun dilarutkan dalam etanol 96% dan dimaserasi selama 24 jam. Kemudian dilakukan uji fitokimia untuk mengetahui adanya alkaloid, flavonoid, tanin, saponin, steroid, dan triterpenoid. Hasil uji fitokimia ekstrak daun saliaramenunjukkan adanya kandunganbahan aktif tannin, saponin, steroid. Kandungan bahan aktif yang terdapat pada ekstrak daun tersebut memiliki potensi sebagai pestisida nabati karena dapat mempengaruhi serangga hama dan bakteri penyebab penyakit pada tanaman holtikultura. Kata Kunci : Skrining Fitokimia, Daun Saliara, Pestisida Nabati
UJI FITOKIMIA, TOKSISITAS (BRINE SHRIMP LETHALITY TEST) SERTA ANTIOKSIDAN KULIT BATANG TERAP (Artocarpus elasticus reinw) DENGAN METODE DPPH (2,2-diphenyl-1-picrylhidrazyl) Maulidya Hafsari Fauzi; Erwin Erwin; Irawan W. Kusuma
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Abstract

Phytochemical test, the mortality of larvae shrimp (Brine Shrimp Lethality Test) and antioxidant activity test of secondary metabolites stem bark of Terap (Artocarpus elasticus reinw) by several of method such as extraction, phytochemical test, the mortality of larvae shrimp (Brine Shrimp Lethality Test) and antioxidant activity test. Based on the result of Brine Shrimp Lethality Test was analyzed using SAS probit analysis to know the value of Lethal Concentration 50 % (LC50), Brine Shrimp Lethality test result that the fraction of ethyl acetate has the highest toxicity with LC50 value obtained 153,3788 ppm. Based on the results of antioxidant activity test that ethanol extract has the highest antioxidant activity with IC50 value obtained at 70.59 ppm. Based on the Phytochemical test, the mortality of larvae shrimp (Brine Shrimp Lethality Test) and antioxidant activity test , it was obtained secondary metabolite compound of phenolic active in stem bark of Terap. Keywords: Terap (Artocarpus elasticus reinw), Brine Shrimp Lethality Test, Antioxidant Activity test.
PERBANDINGAN METODE DESTRUKSI WET DIGESTER DENGAN MUFFLE FURNACE PADA PENENTUAN KADAR Pb2+ (TIMBAL) DALAM RAMBUT Firdaus S. R; Saibun Sitorus
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Abstract

An appeal has been tested for two methods of Wet Digester destruction with Muffle Furnace for determination of Pb (lead) metal ion content in hair. The Wet Digester destruction uses temperature 578oC for 4 hours and the addition of HNO3(p) at the beginning and end of destruction, while Muffle Furnace destruction uses temperature 600oC and addition of HNO3(p) at the end of destruction.Analysis of Pb (lead) metal ion content of destruction results was done with Atomic Absorption Spectrophotometer (AAS).Results of laboratory analysis that in the workers hair of heavy equipment Department Bintang PT. KPC is shown to contain Pb (lead) metal ions. To determine a more valid method of extraction performed linear regression testing, correlation coefficient, Ttabel test and determinant coefficient. The results of linear regression testing for the destruction of Wet Digester obtained r value = 0,867, the correlation coefficient r = 0,867 ≥ r table = 0,564 (positive correlation) and the coefficient of determinant % D = 75,2 %, while the results of linear regression testing for Muffle Furnace destruction obtained r value = 0,864, correlation coefficient r = 0,849 ≥ r table = 0,564 (positive correlation) and the coefficient of determinant % D = 74,8 %. The Destruksi Wet Digester is more valid than the Muffle Furnace destruction because the linear regretting value is closer to the value of r = 1 (perfect linear regression value) and the correlation coefficient and the determinant coefficient of Wet Digester destruction is higher than the correlation coefficient and the determinant coefficient of Muffle Furnace destruction . Keywords: Hair, Lead, Correlation Coefficient, Determination, Wet Digester, Muffle Furnace, Absorption Spectrophotometer (AAS)
PROFIL TUMBUHAN UMBI LOKIO (Allium chinense G.Don) Yohana Pebrina Pasaribu; Chairul Saleh; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
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Abstract

Tumbuhan umbi Lokio (Allium chinense G.Don) merupakan tanaman pangan yang dikonsumsi sebagai bumbu masakan, sayuran dan obat sehingga perlu dilakukan pengujian untuk mengetahui profil dari umbi Lokio. Profil ekstrak kasar umbi Lokio ditinjau dari hasil uji fitokimia terkandung senyawa metabolit sekunder alkaloid, fenolik, triterpenoid, flavonoid dan saponin. Berdasarkan senyawa metabolit sekunder yang terkandung maka dilakukan uji aktivitas antioksidan. Uji aktivitas antioksidan ekstrak kasar umbi Lokio menunjukkan aktivitas antioksidan sangat kuat dengan nilai I50 sebesar 99,18 ppm dan dilakukan pengujian toksisitas dengan metode Brine Shirmp Lethality Test (BSLT). Uji toksisitas ekstrak umbi Lokio menunjukkan tingkat toksisitas yang toksik dengan nilai L50 sebesar 145,3647 ppm sehingga dapat dimanfaatkan untuk bahan pencarian senyawa bioaktif antikanker. Kata Kunci: Lokio (Allium chinense G.Don), Uji Fitokimia, Uji Aktivitas Antioksidan, DPPH (1,1diphenyl-2-picrylhidrazyl), Uji Toksisitas, Brine Shirmp Lethality Test (BSLT)
VERIFIKASI METODE PENENTUAN TIMBAL (Pb) PADA PUPUK NPK MENGGUNAKAN ATOMIC ABSORPTION SPECTROPHOTOMETER (AAS) DI PT PUPUK KALIMANTAN TIMUR Friscylia Friscylia; Soerja Koesnarpadi; Aman Sentosa Panggabean
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
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Abstract

Penelitian tentang verifikasi metode penentuan timbal (Pb) pada pupuk NPK menggunakan atomic absorption spechtrophotometer (AAS) di PT Pupuk Kalimantan Timur telah dilakukan. Penentuan timbal (Pb) pada pupuk NPK mengacu pada SNI 2803:2012. Tujuan penelitian ini adalah untuk meyakinkan bahwa laboratorium mampu melakukan pengujian secara rutin dan menghasilkan data yang valid dengan menggunakan parameter linearitas, akurasi, presisi, limit deteksi, limit kuantisasi dan estimasi ketidakpastian pengukuran. Hasil pengujian didapatkan kadar timbal (Pb) sebesar 22,20 mg/Kg dengan nilai linearitas sebesar 0,9994. Nilai akurasi dengan rentang 97,17 % sampai 107,29 %. Nilai repeatability dan reproducibility dengan % RSD ≤ 2/3 CV Horwitz secara berturut-turut yaitu 1,24 ≤ 6,69 dan 4,69 ≤ 6,67. Nilai limit deteksi adalah 0.39 mg/Kg dan nilai limit kuantisasi adalah 0,52 mg/Kg. Nilai estimasi ketidakpastian pengukuran adalah 22,20 mg/Kg ± 1,23 mg/Kg. Berdasarkan hasil penelitian, metode penentuan Pb dalam pupuk NPK menggunakan atomic absorption spechtrophotometer (AAS) dapat digunakan dengan hasil yang valid. Kata Kunci: pupuk NPK, verifikasi metode, atomic absorption spechtrophotometer (AAS), timbal (Pb).
SINTESIS ETILENDIAMIDA DARI METIL ESTER MINYAK BIJI KELOR (Moringa oleifera) MELALUI REAKSI AMIDASI DENGAN ETILENDIAMIN YANG BERFUNGSI SEBAGAI SURFAKTAN Arif Wardoyo; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Abstract

The ethylenediamide synthesis from methyl ester of Moringa oleifera seed oil has been performed by the amidation reaction. The results showed that GC analysis denoted the most dominant composition of oleic fatty acid in 70.72%. The ethylenediamide which has been resulted an acid,was containedof 12.04 mg KOH/gram of Moringa oleifera seed oil, 5.58 mg KOH/gram of saponification number, and 10.72 of HLB practical value. The FT-IR spectrum has provided a peak of specific absorption for the -C=O amide group, -C-N- which represents the specific group of ethylenediamide. OH and CO ester group showed the process of ethylenediamde synthesis has not proceeded perfectly as seen in the differences of practical and theoretical HLB values. Keywords : Moringa oleifera seed oil, esterification, ethylendiamide, HLB.
IMPREGNASI NATRIUM HIDROKSIDA PADA KARBON AKTIF CANGKANG JENGKOL SEBAGAI KATALIS DALAM PEMBUATAN BIODIESEL Survina Osalia Br Ginting; Daniel Daniel; Noor Hindryawati
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Abstract

Telah dilakukan penelitian tentang pembuatan katalis NaOH/karbon aktif sebagai katalis basa heterogen dengan metode impregnasi untuk diaplikasikan dalam pembuatan biodiesel dari minyak kelapa sawit. Karbon aktif diperoleh dari limbah cangkang jengkol lalu diimpregnasi dengan NaOH dan dikarakterisasi menggunakan SEM. Pada hasil karakterisasi menggunakan SEM menunjukkan pada karbon cangkang jengkol terdapat morfologi permukaan yang heterogen dan tidak beraturan dengan struktur pori–pori yang besar sedangkan pada katalis NaOH/karbon aktif gambar SEM menunjukkan struktur morfologi pada permukaan karbon terlihat lebih halus dan banyak pori-pori karbon yang ditutupi oleh molekul NaOH. Dengan metode pengabuan basah diperoleh pada karbon aktif mengandung 0,021% total Na sedangkan pada katalis NaOH/karbon aktif mengandung 0,212%. Dengan adanya penambahan konsentrasi Na pada katalis menandakan bahwa Na sudah terimpregnasi pada karbon aktif sehingga dengan adanya spesi aktif dari ion Na+ katalis dapat diaplikasikan dalam pembuatan biodiesel. Biodiesel yang dihasilkan dianalisa dengan GC-MS untuk mengetahui komposisi biodiesel. Kata Kunci: Impregnasi, Karbon Aktif, Cangkang Jengkol, Transesterifikasi, Minyak Kelapa Sawit, Biodiesel
STUDI PENDAHULUAN MASERASI COUPLING ELEKTROSINTESIS DALAM MENGEKSTRAKSI NIKOTIN YANG TERKANDUNG DALAM PUNTUNG ROKOK DAN ANALISA MENGGUNAKAN SPEKTROSKOPI UV-VIS Muhammad Taufik; Rid Wanto; Siti Rahmah Cibro; Desi Ardilla; Mariany Razali; Dafni Mawar Tarigan
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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This paper is a preliminary research in the application of electrosynthesis method in extracting the sample. The maceration process of extraction is one of the simplest ways of extracting nicotine in a preparation. The extraction process can be accelerated by electrochemical principle. The method developed is maceration coupling electrosynthetise in analyzing nicotine contained in cigarette butts. Descriptive method developed in the process of nicotine maseration on filter cigarettes and non-filter cigarettes using ethanol solvents. The experimental method was developed in maceration process and maceration coupling electrosynthesis with variation of time respectively 5, 10, 15, 20, 25 minutes. The best results were obtained on non-filter cigarettes using maceration coupling electrosynthesis at 20 and 25 minutes with qualitative results with cyanogen bromide marked by abundant yellow (+++). The analysis continued using UV-Vis spectrophotometry method and obtained the best sample concentration on non-filter cigarette method of maceration coupling electrosynthesis at 15 minute ( 0,01003 ppm). Keywords: nicotine, filter cigarettes, non-filter cigarettes, electrosynthesis, UV-Vis spectrophotometry
PEMBUATAN KARBON AKTIF DARI TANDAN KOSONG PISANG KEPOK (Musa paradisiaca L.) DENGAN BANTUAN GELOMBANG ULTRASONIK Helbyarti Mawar Sari; Noor Hindryawati; R.R. Dirgarini N.
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Abstract

Syntheses of activated carbon from empty bunches of kepok banana (MusaParadisiaca L) (TKP) with ultrasonic waves have been done. The of activated carbon were made via three step, namely carbonization at 350 °C, silica extraction with NaOH, activation with H3PO4 and ultrasonic waves exposure (exposure time 30, 60, and 90 minutes). The best quality activated carbons (according to SNI 06-3730-95) were obtained from the process with ultrasonic wave exposure for 90 minute for activated carbon TKP. Respecting the best quality activated carbon TKP has 4.22 % water content, 3.67 % ash content, 17.52 % volatile matter, 74.59 % carbon content and 840.14 mg/g absorption capacity of lodium. The of activated carbon was analyzer characterized by Scanning Electron Microscope (SEM) showed that the pore of activated carbon was more perfectly formed and regular. Analyzer of surface area with Braunanear Elmmelt and Teller (BET) method showed surface area without exposure at TKP that is 35 m2/g with exposure of TKP that is 94 m2/g. Exposure ultrasonic waves increased surface area and facilitated the formation of more pores with ordered form than the non- exposure one. Keywords: Empty bunches banana, carbon, activated H3PO4, and ultrasonic wave

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