Enhanced repellency of binary mixtures of Zanthoxylum piperitum pericarp steam distillate or Zanthoxylum armatum seed oil constituents and Calophyllum inophyllum nut oil and their aerosols to Stomoxys calcitrans

2010 ◽  
Vol 66 (11) ◽  
pp. 1191-1198 ◽  
Author(s):  
Tran Trung Hieu ◽  
Soon-Il Kim ◽  
Hyung Wook Kwon ◽  
Young-Joon Ahn
2010 ◽  
Vol 47 (4) ◽  
pp. 575-580 ◽  
Author(s):  
Tran Trung Hieu ◽  
Soon-Il Kim ◽  
Sang-Guei Lee ◽  
Young-Joon Ahn

Abstract The repellency to female Stomoxys calcitrans (L.) (Diptera: Muscidae) of 21 essential oils (EOs) alone or in combination with Calophyllum inophyllum L. (Clusiaceae) nut oil (tamanu oil) was examined using an exposed human hand bioassay. Results were compared with those of commonly used repellent N,N-diethyl-3-methylbenzamide (DEET). In tests with six human male volunteers at a dose of 0.5 mg/cm2, patchouli (protection time [PT], 3.67 h) was the most effective EO but less active than DEET (4.47 h), as judged by the PT to first bite. Very strong repellency also was produced by clove bud, lovage root, and clove leaf EOs (PT, 3.50–3.25 h), whereas strong repellency was obtained from thyme white EO (2.12 h). Thyme red, oregano, and geranium EOs exhibited moderate repellency (PT, 1.24–1.11 h). At 0.25 mg/cm2, protection time of clove bud, clove leaf, and lovage root EOs (PT, ≈1 h) was shorter than that of DEET (2.17 h). An increase in the protection time was produced by binary mixtures (PT, 2.68–2.04 h) of five EOs (clove bud, clove leaf, thyme white, patchouli, and savory) and tamanu oil (0.25:2.0 mg/cm2) compared with that of either the constituted essential oil or tamanu oil alone (PT, 0.56 h). The protection time of these binary mixtures was comparable with that of DEET. With the exception of savory EO, the other EOs, tamanu oil, and binary mixtures did not induce any adverse effects on the human volunteers at 0.5 mg/cm2. Thus, binary mixtures of essential oils and tamanu oil described merit further study as potential repellents for protection from humans and domestic animals from biting and nuisance caused by S. calcitrans.


2017 ◽  
Vol 4 (2) ◽  
pp. 394-401 ◽  
Author(s):  
Rustam Musta ◽  
Aceng Haetami ◽  
Mimi Salmawati

Study of the transesterification of Calophyllum innophyllum seed oil from Kendari with methanol has been conducted. The purpose of the research to determine of the yield of ester produced in transesterification process with methanol, the viscosity of biodiesel produced, moisture content of biodiesel produced, density of biodiesel produced. The methods used in this study are sample preparation, transesterification process, biodiesel quality parameter test consisting of viscosity, moisture content and density. The results showed that good concentration of phosphoric acid was used to remove the gum is 85%, the yield of ester produced in the process of transesterification with methanol is 111,647%, parameter of biodiesel quality measured that viscosity = 0,315 mm2/ s not fulfill Indonesian National Standart (INS), water content is 0.02 meets the INS and the density = 0.8725 g / cm3 meets the INS standard


2016 ◽  
Vol 16 (2) ◽  
pp. 20-22
Author(s):  
Mutia Farida ◽  
Mustanir Yahya ◽  
Marlina Marlina

Nyamplung oil originated from Ujong Pancu, Aceh Besar is one of the vegetable oil sources which is not fully utilized yet. The extraction of nyamplung oil is done using soxhletation with n-hexane solvent; during this process, the oils produced is at the 55.55% levels. The product is in the form of yellowish green liquid with the density of 0.88gr/ml. The nyamplung oil extract has the iodine number of iod 83.53 mg iod/g and hydroxyl number of  64.292 mg KOH/gram which can be utilized as the raw material in making polyurethane membrane. Polyurethane membrane is synthesized by reacting fatty acids from nyamplung seed oil with hexamethylene-1.6-diisocyanate (HDMI). The ration of the oil towards HDMI is variated as, 5:1;5:3;5:5;5:7;5:9 v/w. The membrane has a composition of  5:7 v/w  with 90-100 oC polymerization temperatures and  160oC curring temperature for 8 hours is hard, homogenous and quite elastic with a transparent brown colour. 


Fuel ◽  
2022 ◽  
Vol 310 ◽  
pp. 122296
Author(s):  
Rozina ◽  
Mushtaq Ahmad ◽  
Saira Asif ◽  
Jiří Jaromír Klemeš ◽  
Muhammad Mubashir ◽  
...  

2020 ◽  
Vol 16 (1) ◽  
pp. 18-22
Author(s):  
Setiyo Gunawan ◽  
Hakun Wirawasista Aparamarta ◽  
Fadlilatul Taufany ◽  
Arief Prayogo ◽  
Shelma Hajar Anugrah Putri ◽  
...  

Calophyllum inophyllum or commonly called nyamplung in Indonesia has the potential to be used as a biodiesel feedstock due to its high oil content. The purpose of this study was to determine the effect of feed flowrate and solvent to oil mass ratio on triglycerides (TAG) and free fatty acid (FFA) contents in non-polar lipid fraction (NPLF) of C. inophyllum seed oil by using continuous counter-current extraction. The contents of TAG and FFA in NPLF of C. inophyllum seed oil each sample points in continuous countercurrent extraction equipment. It was expected that the TAG became purer and suitable for biodiesel purpose. Various factors applied in this study were the effect of solvent to oil mass ratio and the effect of n-hexane + oil to methanol feed flowrate in liter per hour. Crude C. inophyllum seed oil contained 63.91% TAG, 15.76% FFA, 12.25% monoglycerides (MAG), dan 4.66% diglycerides (DAG). Separation and purification of TAG were carried out by using a packed column with the principle of countercurrent flow using n-hexane and methanol technical grade as solvents. The product of extraction analyzed TAG content qualitatively by using TLC and quantitatively using HT-GC, while NPLF from each sample points were analyzed using HT-GC. The optimum results were obtained by using a solvent to oil mass ratio of 6 (w:w) and (n-hexane + oil) to methanol feed flowrate of 6:15 (L/h:L/h) with 92.85% content of TAG, 2.19% content of FFA and 74.79% yield of NPLF.


2017 ◽  
Vol 17 (2) ◽  
pp. 316 ◽  
Author(s):  
Hendro Juwono ◽  
Triyono Triyono ◽  
Sutarno Sutarno ◽  
Endang Tri Wahyuni ◽  
Ita Ulfin ◽  
...  

Production of biodiesel from crude nyamplung oil (Calophyllum inophyllum) have been done by transesterification using Al-MCM-41 catalyst. Al-MCM-41 catalyst was obtained from impregnation of MCM-41 by Al. Sodium aluminate was added to MCM-41 until pH 11.5. The mixture was heated until 110 °C for 5 days. The calcination was performed at 500 °C, and then cooled at room temperature. The Al-MCM-41 obtained was characterized using SAXRD. Morphology of the surface was analyzed using SEM. The metals content were measured using XPS. Performance of Al-MCM-41 to adsorp and desorp nitrogen was also monitored by GSA using BET model. Acidity of the Al-MCM-41 was analyzed by FTIR using absorption of pyridine. The catalytic activity was measured using gas chromatography-mass spectrometry (GC-MS). The chromatogram shows that conversion Nyamplung seed oil to biodiesel is 98.15%. The performance of biodiesel obtained was analyzed by use it to diesel engine. The biodiesel obtained was mixed with commercial diesel fuel in various volume ratios (i.e. 0, 10, 20, 30 and 100%) before used. Viscosity, flash point, boiling point, cloud point, and pour point of the mixtures were characterized. These measuring properties increase with the increase of biodiesel concentration. Optimum engine power was achieved by 10% biodiesel. The mixture of 10% biodiesel has similar characteristic to commercial diesel fuel at load until 1800 watt.


2020 ◽  
Vol 7 (2) ◽  
pp. 82
Author(s):  
Amal Astam ◽  
Laily Nurliana ◽  
La Ode Kadidae

Research on the synthesis of methyl ester nitrate from nyamplung seed oil (Calophyllum inophyllum L.). The aims of study are to are to determine the nitrate methyl ester can be synthesized from nyamplung seed oil determine the yield of the transesterification and nitration reaction from nyamplung seed oil. In this study nyamplung seed oil was obtained from pressing nyamplung seeds using a hydraulic press, then the crude oil obtained was subsequently degumming to remove gum. Free oil of the etherified gum then transesterification with methanol. The transesterification results are then titrated and produce nitric methyl esters. Characterization of nitric methyl ester  by spectrophotometer IR shows functional groups C-ONO2, C=C dan C-NO2 at wave number 1635,64 cm-1 1550,77 cm-1 dan 1365, 60 cm-1. The yield of transesterification of nyamplung oil was 64.66% and the nitration yield was 10.6%.


Sign in / Sign up

Export Citation Format

Share Document