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Alchemy : Journal of Chemistry
Published by Universitas Islam Negeri Maulana Malik Ibrahim Malang
ISSN : 20861710     EISSN : 24606871     DOI : http://dx.doi.org/10.18860/al
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
ALCHEMY: Journal of Chemistry (eISSN 2460-6871) is a scientific journal that focus on chemistry. This journal publishes a scientific article that cover research and review articles. Research topics for this journal such as natural science, physical chemistry, inorganic chemistry, organic chemistry, environment, biochemistry, marine, energy and other related-sciences. ALCHEMY: Journal of Chemistry also accepts article about halal products and chemistry on Islamic perspectives.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 9 Documents
 1 
Search results for , issue "ALCHEMY (Vol.2 No.1" : 9 Documents clear
UJI TOKSISITAS DAN IDENTIFIKASI AWAL GOLONGAN SENYAWA AKTIF EKSTRAK ETANOL DAN N-HEKSANA TERIPANG PASIR (Holothuria scabra) KERING PANTAI KENJERAN SURABAYA Inayah, Nurul; Ningsih, Rachmawati; Adi, Tri Kustono
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (321.171 KB) | DOI: 10.18860/al.v0i0.2292

Abstract

Sea cucumber (H.Scabra)is a species of marine biota providing high economicaland medical values. It has been hundreds years consumed for drug to cure various diseases in China. The aim of this research was to determine the level of the toxicity against brine shrimp larvae A.salina Leach in each dried sea cucumber (H.scabra) extract collected from Kenjeran Coast, Surabaya. The information would be beneficial for anticancer drug discovery .The research was conducted by extracting samples using both ethanol and n-hexane solvents.The concentrated extract obtained then were used for the toxicity test against brine shrimp larvae of A.salina Leach (BSLT). The mortality data of A.salina Leach was analysed using probit analysis to determine the value of LC50 on each extract. The phytochemical assay and thin layer chromatography (TLC) was also apllied for both extracts.The result showed that both ethanol and n-hexane exctracts performed toxicity level against brine shrimp larvae of A.salina Leach with LC50less than 1000 ppm.The n-hexane extract indicated LC50 of 189.093 ppm, higher than the ethanol extract, 286.031 ppm. The presence of steroids were detected in both extract whilst the alkaloids were only detected in the ethanol extract. Further separation of the n-hexane exctrat using TLC in n-hexane;ethyl acetate;amonia (66:33:0.8) yielded 5 spots with the Rf of 0.3;0.44;0.54;0.72 and 0.78, respectively.
PENYAKIT MALARIA DAN MEKANISME KERJA OBAT-OBAT ANTIMALARIA Muti’ah, Roihatul
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (519.807 KB) | DOI: 10.18860/al.v0i0.2293

Abstract

Malariais one of theinfectious diseaseis stillaproblem ofthe world withhigh mortality. Therapeutic purpose of uncomplicated malariais to eliminateplasmodiumcause infection to preventinfectionseverity, complications andbreak the chain oftransmission. While the purpose therapyof severemalaria is to prevent mortality.Recommendedtherapy of malaria isa combination of twoormore antimalarial drugsthat mechanisms actionkillsmalarialparasitesin thebloodand theamount of each drugworks ondifferent receptors. The use ofa combination ofseveralantimalarial drugshas becomea necessityforprevention ofmalariaparasitestrainsthat are resistantto certain drugs. Combination therapyinclude:ACTs(artemisinin combinationtherapies); artesunateandamodiaquin; artesunateandmefloquin; artesunatewith oneof theSP, lumefantrin, piperaquin, pyronaridin; antibiotic(doxyciclin, clindamycine, azithromycin), artemether-lumefantrine (AL); chloroquineandSP;atovaquoneandproguanil (Malarone)
PENGARUH LAMA FERMENTASI TERHADAP KADAR ALKOHOL TAPE SINGKONG (Manihot utilissima Pohl). Hasanah, Hafidatul; Jannah, Akyunul; Fasya, Ahmad Ghanaim
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (383.261 KB) | DOI: 10.18860/al.v0i0.2294

Abstract

Tape is one of the products of fermentation. Of the agreement MUI, foods and beverages containing alcohol should not exceed 1%, so the food / drinks that contain high levels of alcohol exceeding 1% are included in the category of haram for consumption. This study aimed to determine the effect of fermentation time on ethanol content of cassava (Monihotutilissima Pohl) tapai. The method that is used to separate the two or more component of volatile and non volatile from tapai is called distillation while to analyze an ethanol level used gas chromatography (GC) method. To examine the data which differentiate the base concentration of alcohol (%) in cassava tapai since fermentationprocess which were analyzed by variants analysis (ANOVA). In the next experiment, if there was different significant result, then continued by the test of BNT which the level for about 1%.The samples of cassava (Monihot utilissima Pohl) tapai fermented for about 24, 48, 72, 96 and 120 hours. Those tapai were mashed and added the aquades. The mixed materials were distillated, then entered into the bottle and considered as gram unit. The considered distillations were being analyzed used gas chromatography (GC) method.The result of the research showed that there is the influence of long fermentation to ethanol level’s of cassava (Manihot utilissima Phol) tapai. The level of cassava ethanol was 0.844%, 2.182%, 4.904%, 6.334% and 11.811%. The long fermentation was for about 120 hours and it was an indeed influence (p 0,01) to the level of cassava’s ethanol among the period of long fermentation.
PENGARUH IMPREGNASI LOGAM TITANIUM PADA ZEOLIT ALAM MALANG TERHADAP LUAS PERMUKAAN ZEOLIT Rianto, Lalang Budi; Amalia, Suci; Khalifah, Susi Nurul
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (833.364 KB) | DOI: 10.18860/al.v0i0.2295

Abstract

Effort that can  maximize the working of natural zeolite is by activation and modification as a carrier of active metals or commonly called impregnation. Modified zeolite by impregnation using titanium metal is to increase the performance of a pure metal catalysts such as low in thermal stability, decreasing surface area and sintering occurs (clotting) and expensive in the application. Bearers Treatment in the metallic solids by  impregnating the zeolite would make the metals in zeolites as bifungsional catalysts.Modified Malang’s natural zeolite starting with the activation process using a solution of NH4NO3 2 M, continued by the addition of titanium metal used in zeolite TiO2 solution with a concentration of 0.1, 0.2, and 0.3 M. Modified zeolite crystallinity characterized analized by XRD analysis. Methylen blue adsorption on Ti-zeolite is to measure the specific surface area. SEM surface morphology analysis is used to determine the content of the element is by using XRF analysis.Characterization using XRD analysis results indicate that Malang’s natural zeolite not changed in the structure, but it changes the intensity due to the addition of titanium. The largest surface area measurement obtained from the treatment of Ti-zeolite 0.1, 0.2 and 0.3 M are : 23.159; 23.077 and 20.848 m2/gr. SEM analysis showed that titanium metal dispersion fairly evenly after the modification. While from the XRF analysis showed that the ratio of Si / Al increased to 4.354 and content of titanium in the Ti-natural zeolite Malang is 13.6%.
STUDI ADSORPSI LOGAM Pb(II) DAN Cd(II) PADA ASAM HUMAT DALAM MEDIUM AIR Rahmawati, Atik; Santoso, Sri Juari
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.382 KB) | DOI: 10.18860/al.v0i0.2296

Abstract

It had been conducted a study on adsorption of Cd (II) and Pb (II) of humic acid isolated from peat soil from village of Sambutan, the subdistrict of Samarinda Ilir, East Kalimantan. Aspects studied covered adsorption kinetics and adsorption isotherm of Cd (II) and Pb (II) of humic acid in water medium.Adsorption process carried out by batch method. Kinetics study conducted by intracting metal adsorption of Cd (II) and Pb (II) with humic acid at various times, meanwhile studying the adsorption isotherm is done by interacting Cd (II) and Pb (II) at various concentrations with humic acid.The results showed the adsorption rate of Cd (II) and Pb (II) on humic acid followed first order with rate constants of Cd (II) and Pb (II) of 0.0012 and 0.0038 mg menit-1/10 humic acid. Carboxylic groups of humic acid as the main groups which were actively involved in the interaction of metal-humic acid and have experienced deprotonation is  hard nucleophile. It made Pb (II) was more quickly and easily adsorbed than Cd (II). Adsorption isotherm of Cd (II) and Pb (II) on humic acid followed the pattern of Langmuir isotherm with adsorption capacities of Pb (II) of 1.66 x10-3 mol / g and for Cd (II) 3.83 x10-3 mol / g . The adsorption energy of both metals is relatively small that is equal to 16.1 for Cd(II) and 21.4 kJ / mol for Pb(II).
KINETIKA REAKSI ENZIMATIS EKSTRAK KASAR ENZIM SELULASE BAKTERI SELULOLITIK HASIL ISOLASI DARI BEKATUL Saropah, Dyah Ayu; Jannah, Akyunul; Maunatin, Anik
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (350.138 KB) | DOI: 10.18860/al.v0i0.2297

Abstract

Bran rice is a by-product of rice into rice milling process, the cellulose content of 40-60%, so the potential as a carbon source for the growth of microorganisms such as bacteria to produce enzymes particularly cellulolytic bacteria. The purpose of the study was to determine the diversity of the characters from the cellulolytic bacterial isolates and optimum conditions enzyme (cellulase enzymes rough) so that they can hydrolyze the cellulose to glucose with either rice bran. The characterization includes the determination of pH, temperature and time of optimum crude extract of bacterial cellulolytic enzyme cellulase, determination of Vmax and Km and molecular mass determination of cellulase.Research methods include making media, regeneration of isolates, bacterial growth curve manufacturing, production of cellulase enzymes from bacterial cellulolytic rough at the optimum conditions, the kinetics of enzymatic reaction: substrate concentration factor of the reaction rate (with variation of the concentration of 0.50%, 0.75%, 1 , 00%, 1.25% and 1.50% (w / v)) followed by calculating the Vmax and Km.The results showed that the enzyme cellulase of cellulolytic bacteria isolated from rice bran result that has optimum conditions at pH 7.5, temperature 50 ° C, 40 min incubation time to produce Vmax 0.0086 units / mL and Km 1.694%.
UJI POTENSI PROBIOTIK Lactobacillus plantarium SECARA IN-VITRO Maunatin, Anik; Khanifa, Khanifa
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.905 KB) | DOI: 10.18860/al.v0i0.2298

Abstract

Probiotic is a product containing non-pathogenic microbes live, which was given to animals or humans to fix the rate of growth, efficiency, and increase conversion ration of animal or human health by affecting positively the balance of the gut microbes and microbial pathogen control in the digestive tract. In order to potentially lactic acid bacteria as probiotic candidates must pass the test selection among others such as probiotic test resistance to acid pH, the bile salts, against pathogenic bacteria. This experimental research methods for descriptive use that aim to provide information about the probiotic potential  of Lactobacillus plantarum was isolated from the small intestine Mojosari duck (Anasplathyrinchos) with the tests in vitro i.e. the resistance of Lactobacillus plantarum on the condition of the acidicpH (2, 3, and 4), bile salt concentration of 0.3% (b/v), inhibition of pathogenic bacteria (Escherichia coli, Staphylococcus aureus and Salmonella typhi) The results showed that on pH 2 the number of cells of bacteria that lives was 4.3. 107 CFU/ml, pH 3 was  3.8. 109 CFU/ml and pH 4 was 2.7. 1010 CFU/ml, the resistance of Lactobacillus plantarum on bile salt showed the number of cells of bacteria that lives was 1.2. 109 CFU/ml.inhibition of the pathogenic bacteria showed thatLactobacillus plantarumcould inhibited strong on Escherichia coli and Staphylococcus aureus with diameter of zone was 12.7 mm and 13.3 mm but notSalmonellatyphi with diameter of zone was 9.3 mm.
DETERMINASI KADAR LOGAM TIMBAL (Pb) DALAM MAKANAN KALENG MENGGUNAKAN DESTRUKSI BASAH DAN DESTRUKSI KERING Dewi, Diana Candra
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.164 KB) | DOI: 10.18860/al.v0i0.2299

Abstract

Lead (Pb) is pollutant found in canned foods. It is derived from the soldering between the can and the lid. This study aims to find out the analytical performance of standar curves , the better method between dry ashing dan wet ashing,  the best oxidant solution in wet ashing ang determine lead in canned sausage and canned lychee.This research including : Performance determination of the standard addition curve analysis includes linearity, limits of detection and limits of quantitation, sensitivity, accuracy and precision, sample destruction  using dry ash 500 oC and wet destruction with a variety of oxidizing subtrace such as HNO3 p.a; HNO3 p.a, H2SO4 p.a (3:1), and HNO3 p.a, H2SO4 p.a, H2O2 p.a (6:2:1), and determine  the concentration of lead  in canned sausage and canned lycheeThe results of this research of the standard curve analysis of lead (Pb) are  r =0,9999, LOD 0,028 ppm, LOQ 0,0933 ppm, and sensitivity of 0,00757 the average accuracy of 98%, and precision 2,74%. Wet ashing is more stabil than dry ashing. The best oxidizing substance of canned sausage comes from HNO3, H2SO4 and H2O2 (6:2:1) and lead was found 0,64 ppm whilebest oxidizing substance of canned lychee comes from HNO3, H2SO4 (3:1) and lead was found 0,72 ppm.
ISOLASI ASAM-9Z,12Z,15Z-OKTADEKATRIENOAT DARI BIJI SELASIH (Ocimum basilicum) Fasya, Ahmad Ghanaim; Retnowati, Rurini; Rahman, M.; Duengo, Suleman; Warsito, Warsito
ALCHEMY ALCHEMY (Vol.2 No.1
Publisher : Department of Chemistry, Faculty of Science and Technology UIN Maulana Malik Ibrahim Malan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.743 KB) | DOI: 10.18860/al.v0i0.2300

Abstract

The α-linolenic acid (9,12,15-octadecatrieonic acid) is omega-3 fatty acid that more active than other fatty acids to inhibit cell membrane damages, formation and growth of brain functions, antiinflamatory and prevent several cronic deseases like lung desease and arthrytis. Some research explain that geometri of omega-3 fatty acids had effect on its bioactivity. This research purpose was to isolate α-linolenic acid with geometry Z,Z,Z (9Z,12Z,15Z-oktadekatrienoat).O. basilicum seeds oil was isolated from O. basilicum seeds using Soxhlet extraction with n-hexane, then hidrolized by 12 % solution of KOH in aquadest. The α-linolenic acid was separated from other fatty acids by urea inclusion methods. The optimum condition of urea inclusion was determined in various temperature     (+ 5, + 3, + 1, + (-1), + (-3), + (-5))0C and ratio of fatty acid : urea 1:1; 1:1,5; 1:2; 1:2,5; 1:3; 1:3,5; 1:4.From this research, extraction of O. basilicum seeds oil with n-hexane as solvent resulted clear yellow-brown oil with refractive indeks 1,466 and density 0,855 g/mL. Gas Chromatography (GC) analysis of fatty acids hidrolyzed from   O. basilicum oil showed peak at tR= 19,949 minutes with relative percentage 70,72 %. Base on Mass Spectrum (MS), the fragmentation of this compound, with  tR= 19,949 minutes, was identic with 9Z,12Z,15Z-oktadecatrienoic acid.Isolation of α-linolenic acid from other fatty acids using urea inclusion at temperature 0-2 0C dan rasio fatty acid: urea 1:1,5 showed nonadduct fraction contains compound with tR= 19,980 minutes and relative percentage 88,51 %. Base on Mass Spectrum (MS), the fragmentation of this compound, with tR= 19,980 minutes, was identic with 9Z,12Z,15Z-oktadecatrienoic acid.

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