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All Journal Journal of Applied Chemical Science Indonesia Chimica Acta Indonesian Journal of Chemistry Chemistry Indonesian Journal of Chemical Research Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Jurna Beta Kimia
Luther Kadang
Department Of Chemistry Faculty Of Science And Engineering, Nusa Cendana University
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Physics

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Journal : Journal of Applied Chemical Science

 1 
The Essential Oils from Rhizome Extracts of Acorus Calamus Linn Are Potential Herbal Insecticides against Plutella Xylostella Linn Pests Febri Odel Nitbani; Luter Kadang; Cristiani D. Q. M Bulin
Journal of Applied Chemical Science Volume 1, No. 1 , 2012
Publisher : Journal of Applied Chemical Science

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Abstract

The present study was conducted to elucidate the activity of essential oil from rhizome extracts of Acorus Calamus Linn as an herbal insecticide against Plutella xylostella Linn pests. The oil from the Acorus Calamus roots was extracted by a water steam distillation method and found 0.005% content. Antifeedant testing was performed by trial option, while insecticidal activity was carried out by feeding and contacting methods. The results showed that the oil have activity as an herbal insecticidal and as an appetite inhibitor to the Plutella xylostella Linn pests. The maximum resistance index values ​​obtained from eating essential oils at concentrations of 4.0% was equal to 80.815%. The toxicity values of the oils, reported as LC50, ​​ as insecticides by the feeding trial and contacting methods were 1.33% and 1.27%, respectively. Those results conclusively indicated that the essential oils of the Acorus Calamus Linn potentially protect the cabbage leaves from the Plutella xylostella Linn pest attacking.
The Activated Charcoal of Hazelnut Shell (Aleurites moluccana) Has Potential Capability to Refining Used Cooking Oil Desiana Sanang; Luther Kadang; Theodore Y. K. Lulan
Journal of Applied Chemical Science Volume 1, No. 1 , 2012
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The research that aims to determine the ability of chandlenut shell activated carbon as adsorbent on purification adible frying oil has been done. Frying oil purification process includes of the removal phase seasoning (despicing), neutralization and bleaching using activated carbon. The results showed that the optimum amount of chandlenut shell activated carbon which interacted with adible frying oil on purification process at 0,75 grams, effectively lowering the acid value (0,2984 mg KOH / g), peroxide value (3,2847 meq / Kg), water content (0,1468%) and free fatty acid levels (0,1261%), and increasing numbers saponification (196,2711 mg KOH / g) and also clear oil. However, peroxide value and oil colors result of interacted with the chandlenut shell activated carbon, do not meet the National Standard of Indonesia.
Isolation and Characterization of Cinnamaldehyde Contained in Stem Barkof Cinanamon (Cinnamomumburmannii) Yublina O. Gelang; Theo da Cunha; Luther Kadang
Journal of Applied Chemical Science Volume 1, No. 1 , 2012
Publisher : Journal of Applied Chemical Science

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The research about isolation and characterization of cinnamaldehyde compund that implied in skin steam of cinnamon (Cinnamomum burmannii) was done. Isolation method that used in this research is steam distillation. Cinnamon oil that result from steam skin of cinnamon in this research was 1,2 g (0,012 %). Cinnamon oil then isollated with slim chromatographic method using eluen-n hexane and ethanol with comparison 9:1, 7:3, and 1:1. Characterization cinnamon oil using Infrared spectrophotometer (IR) analysis and Gas Chromatographic- Mass Spectrophotometer (GC-MS). The analyzed result of Infrared spectrophotometer (IR) is giving absorbtion at range 1730,03 cm-1 that be character of aldehida as basic design cinnamaldehyde, while the result of GC analyzed is getting cinamaldehyde concentration 2,37%.
The Characteristics of Synthetic Chitosan Prepared from Snail Shells of Achatina Fulica Jacob A. Frans; Suwari; Luther Kadang
Journal of Applied Chemical Science Volume 2, No. 1 , 2013
Publisher : Journal of Applied Chemical Science

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A synthetic chitosan prepared from snail shells of achatina fulica has been done. The chitosan was yielded by the isolation stages that involved deproteinization, demineralization, and deacetylation that was by NaOH 3.5%, HCl 1 M, and 50% NaOH, respectively, and followed by determination of moisture content, ash content, viscosity, degree of deacetylation and functional groups. The moisture and ash contents were determined by a gravimetric method, the viscosity was by Ostwald instrument, while the degree of deacetylation and the functional groups were by FT-IR. The results showed that using those protocols provided 23.20% of chitosan content from the original snail shell material. The chitosan yielded had (in %) moisture and ash contents, viscosity, and degree of deacetylation were 0.24, 20.0, 198.3, and 68.5%, respectively. The functional group detected that involved –OH group was appeared at 3433.06 cm-1, while the -CH2- asymmetry and -CH2- symmetry were appeared at 2923.88 cm-1 and 2875.67 cm-1, respectively. The functional groups of -CH3-, C=O amide, and C-N aliphatic amines were appeared at 2979 cm-1, 1789.82 cm-1, and 1494.73 cm-1, respectively. The twin band of -NH2 was not found because of overlapping occurred between the -OH and-NH amine groups.
The Water Quality Status of Kupang Tilong Dam Reported by the Pollution Index Parameters Nurlailah D. Kartika; Suwari; Luther Kadang
Journal of Applied Chemical Science Volume 2, No. 1 , 2013
Publisher : Journal of Applied Chemical Science

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There has been reported the water quality status of Kupang Tilong Dam using pollution index parameters. The water samples were taken from five stations and determined using purposive sampling method. The pollution index parameters analyzed were temperature, pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), total solid suspended (TSS), N-nitrate, P-phospate, and water discharge. The results showed that temperature and pH were 25-28.5ºC and 7.54-7.61 pH units, respectively, while the DO, BOD, COD, TSS, N-nitrate, and P-phosphate values (in mg/L) were 8.26-12.5, 1.63-3.04, 11.26-47.37, 4.73-6.28, 0.019-0.043, and 0.01-0.16 mg/L, respectively. The pollution loads detected on station I within water discharges of 250 m3/s could receive the BOD, COD and TSS loads by 236.67, 3681.16, and 488.52 tons/year, respectively. While the station II within water discharges of 0.15 m3/s could receive 126783.01, 2210094.72, and 290587.56 tons/year, respectively. Those results indicated that the water quality status of Kupang Tilong Dam is in a state between a good quality up to a slight polluted that was 0.80 to 3.18 of pollution index value.
Utilization of Java Acid Seed (Tamarindus indica) Extract as a Coagulant in Tofu Waste Treatment Process: Short Communication Meri Letik; Luther Kadang; Suwari
Journal of Applied Chemical Science Volume 2, No. 1 , 2013
Publisher : Journal of Applied Chemical Science

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Abstract

A study concerning the utilization of java acid seed (tamarindus indica) extract as a coagulant to be developed further for tofu wastewater treatment has been conducted. This study aimed to determine the optimum concentration of tamarind seed coagulant and to know the ability of the coagulant to reduce the concentration of total solid suspended (TSS), biochemical oxygen demand (BOD), chemical oxygen demand (COD) and amonia at optimum pH and temperature. In this study, jar-test method was used to confirm the effective dose of tamarind seed extract in reducing turbidity of the water samples analyzed. The applied concentrations of the seed extracts were 2000, 4000 and 6000 ppm. The results showed that the optimum dosage to reduce TSS, BOD and ammonia was 2000 mg/L and the COD was 4000 mg/L . At the optimum concentrations, the coagulant ameliorated up to 92.92% of BOD, 91.30% of COD, 83.34% of TSS, and 97.46% of ammonia levels and the water treated was found visually clear. Those results conclusively indicates that the coagulant made from the tamarind seed ameliorates effectively the BOD, COD, TSS, and ammonia contents as well as the turbidity levels of the water samples flowing from the tofu industry.
The Effects of Rice Washing and Storage of White Rice in Magic Com on Vitamin B1 (Thiamine hydrochloride) Contents Marieta H. Ilatha; Luther Kadang; Febri O. Nitbani
Journal of Applied Chemical Science Volume 2, No. 1 , 2013
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There has been conducted the research to know the effect of rice washing and white rice storage in magic com against vitamin B1 (tiamin hydrochloride) contents. The water used in rice washing was tap water and aquadest. The presences of the building block elements of the vitamin B1 in washing water qualitatively indicated the effects of each type of the water, while the contents of the vitamin either in rice or in washing water was determined by UV-Vis spectrophotometer at wave length of 385 nm. The results showed that the sulfur and chlorine elements, the building block elements of the vitamin, were found in tape water but those elements were not found in aquadest. The vitamin contents of the rice in magic com was up to 0.214 mg/kg, the washing water of stage I, II, and III were 0.096, 0.094, and 0.183 mg/L, respectively. Those results conclusively indicate that the elements contained by the washing water determine the presences of the vitamin building block elements in the rice washing water and therefore reduced the vitamin contents of the rice. The more interesting information of this study was reported in the main article.
Co-Authors Apriono Sutiono Christiani Dewi Q. M. Bulin David Tambaru Desiana Sanang Dodi Darmakusuma Erly Grizca Boelan Fidelis Nitti Fredy Saudale Hermania Em Wogo Imanuel Gauru Jacob A. Frans Kapitan, Origenes Boy Kothan, Domonika Pransa Lapailaka, Titus Magdalena A. Mir Marieta H. Ilatha Meri Letik Modhe, Katarina Naat, Johnson N. Novita Santalia Nika Nurlailah D. Kartika Philiphi de Rozari Pingak, Redi Kristian Pius Dore Ola Rensini, William Antoni Sherlly Ledoh Suwari Theo Da Cunha Theodore Y. K. Lulan Wendelina Archangela Ati Yublina O. Gelang