Category: Volume 4, No. 1, 2017

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Corrosion Inhibition of Steel in Acidic Medium by Eugenol Derivatives: Insight from Density Functional Calculation

Saprizal Hadisaputra, Saprini Hamdiani, and Agus Abhi Purwoko

Department of Chemistry Education, Faculty of Science and Education, Mataram University. Jalan Majapahit 62, Mataram, 83251, INDONESIA

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Corrosion inhibition properties of eugenol derivatives have been elucidated by means of density functional theory at B3LYP/ 6-31G(d) level of theory. The quantum chemical parameters including the highest occupied molecular orbital (EHOMO) and lowest unoccupied molecular orbital (ELUMO), gap energy (∆Egab), ionization potential (I), electron affinity (A), the absolute electronegativity (χ), hardness (η), softness (σ), and the fraction of electron transferred (ΔN) are studied for investigating the corrosion inhibition performance of acetyleugenol derivatives. Effect of electron donating and withdrawing groups has been studied on the corrosion inhibition performance of acetyleugenol derivatives. The NH2 (electron donating substituent) exhibits the highest inhibition efficiency, whereas the NO2 (electron withdrawing substituent) exhibits the lowest inhibition efficiency. This study would have a significant contribution in designing highly potential eugenol based corrosion inhibitors.

https://doi.org/10.22341/jacson.00401p312

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Chaieb E, Bouyanzer A, Hammouti B, Benkaddour M. Inhibition of the corrosion of steel in 1M HCl by eugenol derivatives. A. 2005;246(1-3):199-206. doi:10.1016/j.apsusc.2004.11.011
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Hadisaputra S, Canaval LR, Pranowo HD, Armunanto R. Theoretical study of substituent effects on Cs+/Sr2+–dibenzo-18-crown-6 complexes. M. 2014;145(5):737-745. doi:10.1007/s00706-013-1129-x
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Hadisaputra S, Hamdiani S, Junaidi E. THEORETICAL STUDY ON CORROSION INHIBITION PROPERTIES OF 2-ISOPROPYL-5-METHYLPHENOL. A. 2016;11(2):102. doi:10.20961/alchemy.v11i2.710
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Khaled KF, Al-Qahtani MM. The inhibitive effect of some tetrazole derivatives towards Al corrosion in acid solution: Chemical, electrochemical and theoretical studies. M. 2009;113(1):150-158. doi:10.1016/j.matchemphys.2008.07.060
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Obayes HR, Alwan GH, Alobaidy AHM, Al-Amiery AA, Kadhum AAH, Mohamad A. Quantum chemical assessment of benzimidazole derivatives as corrosion inhibitors. C. 2014;8(1):21. doi:10.1186/1752-153x-8-21
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Obot IB, Obi-Egbedi NO. Theoretical study of benzimidazole and its derivatives and their potential activity as corrosion inhibitors. C. 2010;52(2):657-660. doi:10.1016/j.corsci.2009.10.017

Anticancer Triterpene from the Marine Red Algae Chondria armata

Antonius R. B. Ola,1 Anna-Marie Babey,  and Bruce F. Bowden3

 1Department of Chemistry, Faculty of Sciences and Engineering, Nusa Cendana University, Kupang, NTT, INDONESIA; 2Physiology and Pharmacology, School of Veterinary and Biomedical Sciences, James Cook University, Townsville, Qld 4811, AUSTRALIA;  3School of Pharmacy and Molecular Sciences, Jamescook University, AUSTRALIA

The JACSOnline Group Publisher publishes the work under the licensing of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Authors retain the copyright to their work. Users may read, copy and distribute the work in any medium  provided the authors and the journal are appropriately credited. The users may not use the material for commercial purposes.

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A triterpene, Intiricatetraol (1) was isolated from the marine red alga Chondria armata collected at Orpheus Island. The structures of the compounds 1 were established by extensive spectral data analysis including 2D NMR. Intiricatetraol (1) showed potent activity against P388 cell line with an IC50 value of 41.8 nM.

https://doi.org/10.22341/jacson.00401p318

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Fernández JJ, Souto ML, Norte M. Marine polyether triterpenes (up to May 1999). N. 2000;17(3):235-246. doi:10.1039/a909496b
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Suenaga K, Shibata T, Takada N, Kigoshi H, Yamada K. Aurilol, a Cytotoxic Bromotriterpene Isolated from the Sea HareDolabella auricularia. J. 1998;61(4):515-518. doi:10.1021/np970514k
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Suzuki M, Matsuo Y, Takeda S, Suzuki T. Intricatetraol, a halogenated triterpene alcohol from the red alga Laurencia intricata. P. 1993;33(3):651-656. doi:10.1016/0031-9422(93)85467-6
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Morimoto Y, Okita T, Takaishi M, Tanaka T. Total Synthesis and Determination of the Absolute Configuration of (+)-Intricatetraol. A. 2007;46(7):1132-1135. doi:10.1002/anie.200603806

Prenylated Flavone of the Bark of Arthocarpus elasticus from Alor Island-NTT Indonesia

Rosalina Y. Kurang1 and Taslim Ersam2

 1Department of Chemistry, Faculty of Mathematical and Natural Sciences, Universitas Tribuana Kalabahi; 2Department of Chemistry, Faculty of Mathematical and  Natural Sciences, Institut Teknologi Sepuluh November–Surabaya; INDONESIA

The JACSOnline Group Publisher publishes the work under the licensing of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Authors retain the copyright to their work. Users may read, copy and distribute the work in any medium  provided the authors and the journal are appropriately credited. The users may not use the material for commercial purposes.

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A new prenylated flavone, artoindonesianin A-3, were isolated from the bark of Artocarpus elasticus, an endemic plant from Alor Island – Nusa Tenggara Timur. This study revealed that A. elasticus is the potential source of flavonoids.The structure of compound was determined by UV, IR and NMR spectrometers.

https://doi.org/10.22341/jacson.00401p322

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Jayasinghe ULB, Samarakoon TB, Kumarihamy BMM, Hara N, Fujimoto Y. Four new prenylated flavonoids and xanthones from the root bark of Artocarpus nobilis. F. 2008;79(1):37-41. doi:10.1016/j.fitote.2007.07.014
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Kijjoa A, Cidade HM, Pinto MMM, et al. Prenylflavonoids from Artocarpus elasticus. P. 1996;43(3):691-694. doi:10.1016/0031-9422(96)00293-2
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Lin K-W, Liu C-H, Tu H-Y, Ko H-H, Wei B-L. Antioxidant prenylflavonoids from Artocarpus communis and Artocarpus elasticus. F. 2009;115(2):558-562. doi:10.1016/j.foodchem.2008.12.059
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Syah YM, Achmad SA, Ghisalberti EL, Hakim EH, Mujahidin D. Two new cytotoxic isoprenylated flavones, artoindonesianins U and V, from the heartwood of Artocarpus champeden. F. 2004;75(2):134-140. doi:10.1016/j.fitote.2003.11.005

The Role of Local Microorganisms Generated from Rotten Fruits and Vegetables in Producing Liquid Organic Fertilizer

Didik W. Widjajanto,1 Endang D. Purbajanti,1 Sumarsono,1 and Cahya S. Utama2

1)Ecology and Crop Production Laboratory, Department of Agriculture, Faculty of Animal and Agricultural Sciences; 2)Feedstuff Laboratory, Department of Animal Science, Faculty of Animal and Agricultural Sciences, Diponegoro University, Semarang 50241, INDONESIA

The JACSOnline Group Publisher publishes the work under the licensing of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Authors retain the copyright to their work. Users may read, copy and distribute the work in any medium  provided the authors and the journal are appropriately credited. The users may not use the material for commercial purposes.

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Experiment was conducted in order to find the role of local microorganisms (LoM) generated from rotten fruits and vegetables in producing liquid organic fertilizer (LOF). LoM resulting from rotten fruits and vegetables was dominated by Lactobacillus sp.. Therefore, in this experiment LoM was used to utilize cow urine to be LOF. The LoM was tested based on the composition of rotten fruit (F) and vegetable (V) and LoM consisted of LoM-1 (100% F); LoM-2 (75% F:25% V); LoM-3 (50% F:50% V); LoM-4 (25% F-75% V); and LoM-5 (100% V). In this study other than LoM, EM4 was also used as a source of microorganism and positioned as a control. Cow urine and other materials were mixed and stirred homogenously. After that the LoM was put into the mixture and it then was incubated, respectively, for 6 days (I-6), 12 days (I-12), and 18 days (I-18). At the end of incubation, sample of LOF was taken up and analysis for pH, N, P, K and C. It showed that pH of LOF at all treatments decreased from initial pH of cow urine. The performance of N and K content was different throughout incubation, at I-6, I-12, and I-18. There was no significant differences of C content of LOF among treatments of different LoM at I-6 and I-18 with the exception of I-12. Meanwhile C/N ratio of LOF with different sources of LoM and EM4 at I-6, I-12 were no significant different ranged from 7-12 and 8-11, respectively. There was significantly different of C/N ratio among treatments of different LoM and EM4 at I-18.  The C/N ratio of LOF with EM4 as starter showed different performance. The C/N ratio of it increased at I-6 and I-12, but gradually decreased at I-18. The LoM generated from rotten fruits and vegetables was dominated by Lactobacillus sp. and have potential to be a starter in producing LOF. The quality of LOF was determined by the incubation periods, mainly at I-18. Therefore, further investigation on this matter is highly recommended.

https://doi.org/10.22341/jacson.00401p325

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Pan I, Dam B, Sen SK. Composting of common organic wastes using microbial inoculants. 3. 2011;2(2):127-134. doi:10.1007/s13205-011-0033-5
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Singh JS, Pandey VC, Singh DP. Efficient soil microorganisms: A new dimension for sustainable agriculture and environmental development. A. 2011;140(3-4):339-353. doi:10.1016/j.agee.2011.01.017
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The Radioisotope Strengths of the Mineral Deposits in Lands of the West Timor Island-Indonesia

Bartholomeus Pasangka,1  Kirbani Sri Brotopuspito,2 and Abdul Wahid1

1Department of Physics Faculty of Sciences and Engineering Nusa Cendana University, Kupang 85001, INDONESIA; 2Department of Physics/Geophysics Faculty of Mathematical and Natural Sciences, Gadjah Mada University, Yogyakarta, INDONESIA

The JACSOnline Group Publisher publishes the work under the licensing of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Authors retain the copyright to their work. Users may read, copy and distribute the work in any medium  provided the authors and the journal are appropriately credited. The users may not use the material for commercial purposes.

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The objective of this work was to investigate the radioisotope distribution and centered accumulation in mineral deposits in lands of West Timor Island. The procedures consisted of observation and identification of the potential regions and planning the plot gridding, calibration of necessary equipments, measurement of counting background around the survey location and the nuclear radiation in the survey location, planning the plotting of three-dimensional curves and contours. Based on geology information (drilling data), the three depth levels (about 20 m, 40 m and 60 m) were determined. Radiation powers were calculated to estimate the accumulation centers of the radioisotopes in mineral deposits. Thereafter, the contour and three-dimensional curves of radiation powers of the radioisotopes were plotted. Based on three-dimensional curves and contour mapping of the radioisotopes, the radiation counts and radiation powers of those three land depth levels were found at a width area of 3.00 x 106 m2 and 1.56 x 104 m2, respectively. The interval of radiation counts of radioisotopes in the mineral deposit were 10 to 137 counts per min. In conclusion: the strengths of the radioisotope decays of the mineral deposits from the land areas of the West Timor Island of Indonesia are in range of 14,400 to 197,280 counts per day.

https://doi.org/10.22341/jacson.00401p330

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The Effects of Substitution of Corn Meal from the Concentrate of Plus-Complete Feed with Fermented Cocoa Pod on Growth of the Young Male Bali Cattle

Erna Hartati,  Gusti A. Y. Lestari, and A. Saleh

Department of Animal Science, Faculty of Animal Science, Nusa Cendana University. Jln. Adisucipto Penfui, Kupang, 85001, INDONESIA

The JACSOnline Group Publisher publishes the work under the licensing of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Authors retain the copyright to their work. Users may read, copy and distribute the work in any medium  provided the authors and the journal are appropriately credited. The users may not use the material for commercial purposes.

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The study aimed to evaluate  the effects of substitution of corn meal from concentrate of plus-complete feed (PCF) with fermented cocoa pod (FCP) on growth of the young male Bali Cattle. Fifteen young male Bali Cattles were randomly assigned into five groups for the substitutions of corn meal from the PCF by FCP treatments i.e 0, 25, 50, 75 and 100 % which each group was replicated by  three subgroups. The pods were fermented with yeast Aspergillus niger that had been activated by the combinations of sugar, urea, NPK fertilizers, and various levels of ZnSO4 and Zn-Cu isoleusinate. The best fermented cocoa pod, that produced NH3 and VFA in in vitro experiment, was used in the study. The results of  the study showed that substitutions of corn meal from the PCF by 100% FCP decreased signifikantly (P<0.01)  Zn and Cu status,  energy and N retention, and body weight gain of the young male Bali Cattles. However, the substitutions by 0 %, 25% and 50% FCPs, those values did not decrease significant. Despite of corn meal substitutions of PCF by FCP did not decrease significantly plasma glucose and protein consumption, but substitution by FCP between of 0 % and  25 % did not decrease significantly protein consumption. In conclusion: the substitution of corn meal from the PCF by the FCP at the level up to 50% can be applied without disturbance the growth of the young male Bali Cattle.

https://doi.org/10.22341/jacson.00401p338

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Cortinhas CS, Botaro BG, Sucupira MCA, Renno FP, Santos MV. Antioxidant enzymes and somatic cell count in dairy cows fed with organic source of zinc, copper and selenium. L. 2010;127(1):84-87. doi:10.1016/j.livsci.2009.09.001
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Miller WJ, Blackmon DM, Gentry RP, Powell GW, Perkins HF. Influence of Zinc Deficiency on Zinc and Dry Matter Content of Ruminant Tissues and on Excretion of Zinc. J. 1966;49(11):1446-1453. doi:10.3168/jds.s0022-0302(66)88108-0
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Spears JW, Weiss WP. Role of antioxidants and trace elements in health and immunity of transition dairy cows. T. 2008;176(1):70-76. doi:10.1016/j.tvjl.2007.12.015