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Sintesis Heksa-p-tert-Butilheksaesterkaliks[6]Arena dari p-tert-Butilkaliks[6]Arena Nasriadi Dali; Abd. Wahid Wahab; Firdaus Firdaus; Maming Maming
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.38 KB) | DOI: 10.24252/al-kimia.v3i1.1665

Abstract

A research has been done to synthesize hexa-p-tert-butylhexaestercalix[6]arene using p-tert-butylcalix[6]arene as a starting material. The synthesis was carried out by esterifying p-tert-butylcalix[6]arene. Synthesis products were identified and characterized by melting point, TLC, FTIR, 1H-NMR, and 13C-NMR spectrometers. Synthesis products was obtained a white solid powder (68.45% recovery), melting point 349-351 °C, TLC (SiO2, ethanol: ethyl acetate = 1: 1 v/v, Rf = 0.90). The results of the analysis  of synthesis products with FTIR, 1H-NMR, and  13C-NMR spectrometer showed that the synthesis products compound is 5, 11, 17, 23, 29, 35-hexakis (p-tert-butyl)-37, 38, 39, 40, 41, 42-hexakis (ethoxy-carbonylmethoxy) calix[6]arene.
Uji Aktivitas Antioksidan Ekstrak Metanol Daun Pecah Beling Strobilanthes Crispus Arniah Dali; Haeruddin Haeruddin; Wa Ode Yusmita Miranda; Nasriadi Dali
Al-Kimia Vol 5 No 2 (2017): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i2.3642

Abstract

The antioxidant activity test of methanol extracts of the leaves nasty shard Strobilanthes crispus has been done. This study aims to test the phytochemical and antioxidant activity of methanol extracts of the leaves nasty shard Strobilanthes crispus. The leaves nasty shard are macerated with methanol for 3x24 hours. Further methanol extract was tested phytochemically and antioxidant activity by DPPH method (1,1-Diphenyl-2-picrylhydrazil). The result of phytochemical test showed that the methanol extract of the leaves nasty shard Strobilanthes crispus contain secondary metabolites of alkaloids, flavonoids, and saponins. The result of antioxidant activity test showed that the methanol extract of the leaves nasty shard Strobilanthes crispus have antioxidant activity with IC50 of 100,363 ppm.
Sintesis N-p-Metilbenzil-p-Kumaramida dari Asam p-Kumarat Nasriadi Dali; Arniah Dali
Al-Kimia Vol 5 No 2 (2017): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v5i2.3643

Abstract

N-p-Methylbenzyl-p-coumaramide has been synthesized from p-coumaric acid. The purpose of this study was to synthesize N-p-methylbenzyl-p-coumaramide compounds from p-coumaric acid. The N-p-methylbenzyl-p-coumaramide target compound was obtained by direct conversion method using a orthoboric acid catalyst. Target compounds were identified and characterized by melting point, TLC test, FTIR, 1H-NMR, and 13C-NMR spectrometer. The results showed that N-p-methylbenzyl-p-coumaramide compound obtained was white solid (yield 75.83%) with melting point 156-158 oC and TLC (SiO2, n-hexane : chloroform = 5: 3 v/v, Rf = 0.37). 
Synthesis of N-Benzenesulfonyl-p-Coumaramide from p-Coumaric Acid Nasriadi Dali; Arniah Dali
Al-Kimia Vol 6 No 2 (2018): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v6i2.5891

Abstract

N-Benzenesulfonyl-p-Coumaramide has been synthesized from  p-qumarid acid. This research aimed to synthesized  N-Benzenesulfonyl-p-Coumaramidefrom p-qumarid acid. Targeted coumpound obtained  from two steps reaction. Whice were amidation and asilation. Shynthesized product was identified and characterized by melting point, thing Layer Chromatography analysis, FTIR Spectrhophotometer,  1H-NMR, dan 13C-NMR. The result showed the obtained N-Benzenesulfonyl-p-Coumaramide was white solid ( yield 78.58 %) with melting point was 145-147 oC  and KLT (SiO2, n-hexane : cloroform = 6 : 4 v/v, Rf = 0.45).
Synthesis of Nitro Ethyl Oleic from Used Cooking Oil Nasriadi Dali; Arniah Dali
Al-Kimia Vol 7 No 1 (2019): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v7i1.7642

Abstract

Nitro ethyl oleic has been synthesized from used cooking oil. This study aims to synthesize nitro ethyl oleic from used cooking oil. The target compounds of nitro ethyl oleic are obtained through four stages, namely the stages of purification, esterification, transesterification, and nitration. From the purification stage of used cooking oil with sago pulp activated charcoal adsorbent is obtained fragrant and delicious pure cooking oil, yellow with water content of 0.13%, acid number 1.10 mg KOH/g fat, FFA level of 1.57%, and turbidity of 2.45 NTU. From the esterification stage was obtained methyl oleic (r = 0.887 g/cm3) and oil (triolein) in light brown with FFA level of 0.34%. From the transesterification stage was obtained ethyl oleic (83.33% acquisition) in the form of yellow liquid (r = 0.902 g/cm3), fragrant, and boiling point 77oC. From the nitration stage was obtained nitro ethyl oleic (66.67% acquisition) in the form of blackish brown liquid (r = 1.587 g/cm3), typical of biodiesel with a boiling point of 80oC.  
Antituberculosis Activity Test of N-p-Methylbenzyl-p-coumaramide (MBC) Against M. tuberculosis H37Rv Nasriadi Dali Wela; Arniah Dali Wela; Seniwati Dali; Hilda Ayu Melvi Amalia
Al-Kimia Vol 8 No 2 (2020): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i2.10761

Abstract

An antituberculosis activity test of N-p-Methylbenzyl-p-coumaramide (MBC) against M. tuberculosis H37Rv has been carried out. The purpose of this study was to determine the antituberculosis activity of MBC against M. tuberculosis H37Rv. The study was conducted using agar diffusion method. The test solution was prepared by dissolving MBC in 20 mL Ogawa medium to a final concentration of 0.25; 0.50; 1; and 2 mg/L. PDA media that had been inoculated with M. tuberculosis H37Rv (seeded agar) were poured over the base layer on the petridish surface. Paper disks that have been immersed in the test solution were put symmetrically on the seeded agar. Furthermore, the seeds were incubated at 37 oC for 48 hours. Then the diameter of the inhibition zone was measured to the accuracy of 0.5 mm with a ruler. The results showed that MBC has biological activity as an antituberculosis. MBC can inhibit the growth of M. tuberculosis H37Rv at a concentration of 0.25; 0.50; 1; and 2 mg/L with a diameter of inhibitory zones respectively 8.9; 13.7; 18.5; and 21.3 mm. This showed that the inhibition of MBC on the growth of M. tuberculosis H37Rv increased with increasing concentration of MBC used.
Synthesis of the BCAC4ND2 Ionophore from p-t-Butylcalix[4]arene Ethylester Nasriadi Dali Wela; Arniah Dali Wela
Akta Kimia Indonesia Vol 5, No 1 (2020)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.342 KB) | DOI: 10.12962/j25493736.v5i1.6711

Abstract

Abstrak Penelitian tentang sintesis ionofor BCAC4ND2 dari p-t-butilkaliks[4]arena etilester telah dilakukan. Penelitian ini bertujuan untuk mensintesis ionofor BCAC4ND2 dari p-t-butilkaliks[4]arena etilester. Ionofor BCAC4ND2 disintesis dengan cara menghidrolisis p-t-butilkaliks[4]arena etilester dalam larutan KOH-etanol 95%. Reaksi hidrolisis ester terpromosi basa ini direfluks selama 28 jam pada suhu 78 oC. Ionofor BCAC4ND2 diidentifikasi dan dikarakterisasi dengan titik leleh, kromatografi lapis tipis (KLT), spektrometer FTIR, 1H-NMR, dan 13C-NMR. Ionofor BCAC4ND2 yang diperoleh berupa padatan putih (perolehan 62,38%), titik leleh 326-328 oC, dan KLT (SiO2, etanol : etilasetat = 1 : 1 v/v, Rf = 0,93).Abstract Research on the synthesis of the BCAC4ND2 ionophore from p-t-butylcalix[4]arene ethylester has been carried out. This study aims to synthesize the BCAC4ND2 ionophor from p-t-butylcalix[4]arene ethylester. The BCAC4ND2 ionophore is synthesized by hydrolyzing p-t-butylcalix[4]arene ethylester in aqueous KOH-ethanol of 95%. The hydrolysis reaction of these base-promoted esters are refluxed for 28 hours at 78 oC. The BCAC4ND2 ionophore was identified and characterized by melting point, thin layer chromatography (TLC), FTIR, 1H-NMR, and 13C-NMR spectrometers. The BCAC4ND2 ionophore obtained was in the form of white solid (62.38% recovery), a melting point 326-328 oC, and TLC (SiO2, ethanol : ethylacetate = 1 : 1 v/v, Rf = 0.93).
Study of Reaction Conditions for the Synthesis of Methyl Oleic from Used Cooking Oil Nasriadi Dali Wela; Arniah Dali Wela
Akta Kimia Indonesia Vol 6, No 1 (2021)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v6i1.8106

Abstract

Abstrak Penelitian tentang studi kondisi reaksi sintesis metil oleat dari minyak jelantah telah dilakukan. Penelitian ini bertujuan untuk: (1) menurunkan kadar asam lemak bebas (ALB) minyak jelantah dengan menggunakan adsorben arang aktif biji alpukat; (2) menentukan kondisi optimum reaksi sintesis metil oleat dari minyak jelantah; (3) menentukan kualitas metil oleat; (4) mengkarakterisasi metil oleat dengan FTIR. Metil oleat diperoleh melalui dua tahap, yaitu tahap pemurnian dan sintesis. Pada tahap pemurnian, 150 mL minyak jelantah diadsorpsi dengan (2, 4, 6, 8, dan 10) g arang aktif biji alpukat selama 2 jam pada suhu 70oC. Hasil pemurnian menunjukkan bahwa arang aktif biji alpukat dapat menurunkan kadar ALB minyak jelantah sebesar 93,79% (b/b). Pada tahap sintesis, metil oleat disintesis dengan menggunakan perbandingan mol (triolein : metanol) (1 : 3), (1 : 6), dan (1 : 9), serta konsentrasi NaOH (1, 8, dan 16) % (b/b) dari berat minyak. Hasil penelitian menunjukkan bahwa kondisi optimum reaksi sintesis metil oleat dari minyak jelantah dengan rendemen tertinggi (84,32% b/b) adalah rasio mol (triolein : metanol) (1 : 9) dengan konsentrasi NaOH 1% (b/b). Kualitas metil oleat yang dihasilkan memenuhi syarat sebagai biodiesel menurut SNI 04-7182-2015 dengan nilai bilangan iodin 4,44 g I2/sampel, angka penyabunan 114,44 mg KOH/g sampel, angka setana 82,96, kadar air 0,03% (b/b), dan bilangan asam 0,71 mg KOH/g sampel. Hasil karakterisasi metil oleat dengan FTIR menunjukkan bahwa metil oleat memiliki tipe serapan gugus fungsi yang khas dari senyawa ester asam lemak tak jenuh.Abstract Research on the study of the reaction conditions for the synthesis of methyl oleic from used cooking oil has been carried out. This study aims to: (1) reduce levels of free fatty acids (FFA) used cooking oil using activated charcoal adsorbent avocado seed; (2) determining the optimum conditions for the synthesis of methyl oleic from used cooking oil; (3) determining the quality of methyl oleic; (4) characterized methyl oleic by FTIR. Methyl oleic was obtained in two stages, namely the purification and synthesis stages. In the purification stage, 150 mL of used cooking oil was adsorbed with (2, 4, 6, 8, and 10) g of avocado seed activated charcoal for 2 hours at 70oC. The purification results showed that the avocado seed activated charcoal could reduce the FFA content of used cooking oil by 93.79% (w/w). In the synthesis stage, methyl oleic was synthesized using the mol ratio (triolein : methanol) (1 : 3), (1 : 6), and (1 : 9), as well as the concentration of NaOH (1, 8, and 16)% (w/w) by weight of oil. The results showed that the optimum condition for the synthesis of methyl oleic from used cooking oil with the highest yield (84.32% w/w) was the mol ratio (triolein : methanol) (1 : 9) with a concentration of NaOH 1% (w/w). The quality of the resulting methyl oleic meets the requirements as biodiesel according to INS 04-7182-2015 with an iodine number value of 4.44 g I2/sample, saponification number of 114.44 mg KOH/g sample, cetane number of 82.96, water content of 0.03% (w/w), and the acid number of 0.71 mg KOH/g sample. The results of characterization of methyl oleic by FTIR showed that methyl oleic had a typical functional group absorption type of unsaturated fatty acid esters.
Synthesis of the BEAC4ND4 Ionophore from p-t-Butylcalix[4]arene Carboxylic Acid Nasriadi Dali; Arniah Dali; Seniwati Dali; Hilda Ayu Melvi Amalia
Jurnal Kimia Sains dan Aplikasi Vol 23, No 12 (2020): Volume 23 Issue 12 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3261.582 KB) | DOI: 10.14710/jksa.23.12.424-431

Abstract

The BEAC4ND4 ionophore has been successfully synthesized from p-t-butylcalix[4]arene carboxylic acid. The BEAC4ND4 ionophore was obtained in two steps of the synthesis reaction. The first step is the chlorination reaction of p-t-butylcalix[4]arene carboxylic acid with thionyl chloride in dry benzene solvent. The chlorination reaction product is p-t-butylcalix[4]arene acyl chloride in the form of the light brown viscous liquid with a yield of 78.25% and TLC (SiO2, CH3OH: CH2Cl2 = 1: 1 v/v, Rf = 0.65). The second step is the amidation reaction of ethyl 2-aminoacetate with p-t-butylcalix[4]arene acyl chloride in dry tetrahydrofuran solvent. The product of the amidation reaction is p-t-butylcalix[4]arene ethylesteramide or the BEAC4ND4 ionophore in the form of a white solid with the yield of 75.22%, a melting point of 314-316°C, and TLC (SiO2, CH3OH: CH2Cl2 = 1: 1 v/v, Rf = 0.75).
Highly Selective and Sensitive Determination of Hg(II) Ions Using Ion Selective Electrodes (ISE) Coated with the BEC4ND1 Ionophore as Membranes Nasriadi Dali; Seniwati Dali; Armadi Chairunnas; Hilda Ayu Melvi Amalia; Sri Ayu Andini Puspitasari
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 2 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i2.62213

Abstract

The research on the highly selective and sensitive determination of Hg(II) ions using ion-selective electrodes (ISE) coated with the BEC4ND1 ionophore as a membrane has been successfully carried out. ISE was designed using the membrane composition of the [(BEC4ND1 ionophore : PTCPB : DOS : PVC) (3 : 2 : 60 : 35 % w/w)]. The ESI-BEC4ND1 ionophore has good characteristics where it shows a sensitivity value of 29.933 mV/decade in the Hg(II) ion concentration range of 10-9 - 10-1 M with a limit of detection (LoD) of 10-7 M. The response time obtained is in the range of 4 - 8 minutes with a relative standard deviation (RSD) of 0.548. The ESI-BEC4ND1 ionophore also shows the average value of selectivity coefficient (Kij) < 1. These results indicate that the presence of Zn(II), Cd(II), and Pb(II) ions as interfering ions in the analyte solution does not affect the performance of the ESI-BEC4ND1 ionophore in detecting Hg(II) ions. The ESI-BEC4ND1 ionophore that has been developed shows good selectivity, sensitivity, stability, and reproducibility, so the ESI-BEC4ND1 ionophore is promising to be used as a Hg(II) ion detector in the environment.