scholarly journals Pembuatan Minyak Biji Karet Dari Biji Karet Dengan Menggunakan Metode Screw Pressing: Analisis Produk Penghitungan Rendemen, Penentuan Kadar Air Minyak, Analisa Densitas, Analisa Viskositas, Analisa Angka Asam Dan Analisa Angka Penyabunan

METANA ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. 13
Author(s):  
Abdul Hakim ◽  
Edwin Mukhtadi
Keyword(s):  
Hevea Brasiliensis ◽  
Seed Oil ◽  
Oil Yield ◽  
Product Analysis ◽  
Rubber Seed Oil ◽  
Pressing Method ◽  
Screw Pressing ◽  
Rubber Seed ◽  
Preheating Temperature ◽  
Mechanical Pressing

Karet (Hevea brasiliensis Muell. Arg) merupakan salah satu hasil pertanian yang banyak menunjang perekonomian Negara. Selain menghasilkan lateks, perkebunan karet juga menghasilkan biji karet yang belum termanfaatkan secara optimum. Dengan melihat tingginya kandungan minyak di dalam daging biji karet yakni sebesar 45.63% maka minyak tersebut sangat potensial untuk dimanfaatkan. Proses pengambilan minyak biji karet dapat dilakukan dengan dua cara antara lain pengepresan (pressing), dan pelarut (solvent). Dua cara yang umum digunakan yaitu dengan metode pengepresan mekanis antara lain pengepresan hidrolik (hydraulic pressing) dan pengepresan berulir (screw pressing). Cara screw pressing memerlukan perlakuan pendahuluan yang terdiri dari proses pemanasan atau tempering. Pada penelitian ini mempelajari tentang “Pengaruh Ukuran Material dan Temperatur Pemanasan Awal terhadap Perolehan Minyak Biji Karet dengan Metode Pengepresan Berulir (screw pressing)”. Biji karet dibersihkan dan disortir dari kulitnya maupun kotoran kemudian diperkecil ukuran biji karet dengan variasi ukuran 100 mm (+ 10 mm), 50 mm (+ 10 mm) dan 100 mesh. Selanjutnya dipanaskan dengan variabel suhu 50oC, 60oC dan 70oC kemudian biji karet tersebut dipress dengan variabel kecepatan putar ulir 200 ppm. Hasil dari penelitian ini didapat persentase terbesar pada variasi ukuran material 100 mesh dan suhu pemanasan awal 70 oC yaitu sebesar 10,11 %. Kadar air 0,2 %, densitas 0,920 gr/ml, dan viskositas 34,476 cp.Making Rubber Seed Oil From Rubber Bean With Using Screw Pressing Method: Product Analysis Calculation of Rendement, Determination of Water Content of Oil, Density Analysis, Viscosity Analysis, Analysis of Acid Numbers and Analysis of Plaque Rate Rubber (Hevea brasiliensis Muell. Arg) is which one of agriculture product many have developing economic country. Except of latex product, rubber of plantation to production rubber seeds to optimum used not yet. As see oil content on rubber seed is very high 45,63% so the rubber seed oil has wide potential aplication. To obtain oil from rubber seed, there are two methods commonly used for oil extraction from rubber seeds, which are mechanical pressing and solvent extraction. Two common methods of mechanical pressing can be used, which are hydraulic pressing and screw pressing. Screw pressing methode had been pretreatment consist of tempering. The objective of this research is to study the “effect of material size and preheating temperature on rubber seed oil yield using screw pressing methode. The rubber seeds are cleaned and the kernels are separated manually from the seeds. after that, rubber seed was size reducted with various 100 mm (+10 mm), 50 mm (+10 mm) and 100 mesh after that the rubber seeds preheatead with various temperatures 50oC, 60oC and 70oC. The next step is the pressing operation using screw speed 200 rpm. The higher result from research had oil yield persentation 10,11 % with variations material size at 100 mesh and preheating temperature 70oC.moisture content 0,2%, density 0,920 gr/ml, and viscosity 34,476 cp. 

scholarly journals TRANSESTERIFIKASI MINYAK BIJI KARET (Hevea brasiliensis) MENGGUNAKAN KATALIS HETEROGEN CANGKANG KEPITING LIMBAH SEAFOOD TERMODIFIKASI K2O

Jurnal Kimia ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
N. K. D. Astuti ◽  
I N. Simpen ◽  
I W. Suarsa
Keyword(s):  
Methyl Ester ◽  
Heterogeneous Catalyst ◽  
Hevea Brasiliensis ◽  
Heterogeneous Catalysts ◽  
Seed Oil ◽  
Molar Ratio ◽  
Impregnation Method ◽  
Crab Shell ◽  
Rubber Seed Oil ◽  
Rubber Seed

The CaO heterogeneous catalysts can be prepared by CaCO3 calcination process, with one source of CaCO3 being a crab shell from seafood waste. The preparation of the heterogeneous catalyst was successfully carried out by modification with KOH using a wet impregnation method at 800oC for 5 hours. The purpose of this research is to determine the physical and chemical characteristics of heterogeneous catalyst of K2O-modified crab shell and to examine the heterogeneous catalyst of K2O-modified shells in converting rubber seed oil into biodiesel. The results showed that the lowest basic alkalinity possessed without modified catalyst (1.0428 mmol g-1) and the highest alkali possessed potassium-modified catalyst (1.8314 mmol g-1). Characterization of specific surface area of ??crab shells without and with modified K2O were relatively the same. The surface morphology of the catalyst without and K2O modified was uniform. The catalyst examination results for conversion of rubber seed oil (Hevea brasiliensis) to biodiesel, the optimum catalyst concentration of 3% and the molar ratio of oil:methanol of 1:9 capable converting to biodiesel with the yield of 91.05%. The content of biodiesel were stearic methyl ester, linoleic methyl ester, linolenic methyl ester, and palmitic methyl ester.

scholarly journals Extraction of rubber (hevea brasiliensis) seed oil using soxhlet method

2014 ◽  
Vol 10 (1) ◽  
Author(s):  
S.H. Mohd-Setapar ◽  
Lee Nian-Yian ◽  
N.S. Mohd-Sharif
Keyword(s):  
Fatty Acids ◽  
Solvent Extraction ◽  
Linolenic Acid ◽  
Hevea Brasiliensis ◽  
Seed Oil ◽  
Soxhlet Extraction ◽  
Bioactive Molecules ◽  
Alpha Linolenic Acid ◽  
Rubber Seed Oil ◽  
Rubber Seed

Soxhlet extraction which is also known as solvent extraction refers to the preferential dissolution of oil by contacting oilseeds with a liquid solvent. This is the most efficient method to recover oil from oilseeds, thus solvent extraction using hexane has been commercialized as a standard practice in today’s industry. In this study, soxhlet extraction had been used to extract the rubber seed oil which contains high percentage of alpha-linolenic acid. In addition, the different solvents will be used for the extraction of rubber seed oil such as petroleum ether, n-hexane, ethanol and water to study the best solvent to extract the rubber seed oil so the maximum oil yield can be obtained. On the other hands, the natural resource, rubber belongs to the family of Euphorbiaceae, the genus is Hevea while the species of rubber is brasiliensis. Rubber (Hevea brasiliensis) seeds are abundant and wasted because they had not been used in any industry or applications in daily life. The oil of rubber seeds had been found that contained a significant percentage of long chain polyunsaturated fatty acids especially alpha-linolenic acid (ALA). Alpha-linolenic acid is one of the important elements of omega-3 fatty acids which play important roles in human metabolism, not only playing structural roles in phospholipid bilayers but also acting as precursors to bioactive molecules. Moreover, rubber seed oil also contains a high percentage of oleic acid and linoleic acid, these all are valuable compounds. Thus, rubber seed oil can be regarded as a plant derived oleic-linolenic acid. Rubber seeds can be considered as good sources for human food, animal feed and biofuel with its high content of fat, protein, amino acids and fatty acids. Therefore, it is important to study the method of extraction to extract the valuable components from rubber seeds, purify the extracted seed oil, so that the rubber seeds oil can be utilized into difference industries pharmaceutical, food, oleochemical and cosmetics.

Oil yield and fuel property study of rubber seed oil-based biodiesel: a promising feedstock for sustainable bio-energy production

2021 ◽  
Vol 12 (4) ◽  
pp. 318
Author(s):  
Rishikesh Deka ◽  
Jyotirmoy Sarma ◽  
Jayanta K. Sarmah
Keyword(s):  
Energy Production ◽  
Seed Oil ◽  
Oil Yield ◽  
Rubber Seed Oil ◽  
Fuel Property ◽  
Rubber Seed

scholarly journals Identifikasi Asam Lemak Penyusun Minyak Biji Karet (Hevea Brasiliensis) Menggunakan GC-MS

2003 ◽  
Vol 6 (2) ◽  
pp. 19-21
Author(s):  
Ismiyarto Ismiyarto ◽  
Nor Basid Adiwibawa Prasetya ◽  
Pratama Jujur Wibawa
Keyword(s):  
Gas Chromatography ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Hevea Brasiliensis ◽  
Seed Oil ◽  
Acid Methyl Ester ◽  
Soxhlet Extraction ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Acid Methyl

Isolation of rubber seed (Hevea brasiliensis) oil have carried out by using soxhlet extraction with n-hexane as solvent. This research have been determined of fatty acid composition of rubber seed oil. Separation of free fatty acid from triglyceride done by ethanol 96 %. The oil phase was analysed by gas chromatography - mass spectrophotometer. It was resulted five chromatogram peaks of fatty acid methyl ester, there are methylester from palmitic acid (9.12%), linoleic acid (44.69 %), elaidic acid (44.69 %), stearic acid (8.89 %>) and 11,14-eicosadienoic acid (5.30 %) respectively.

scholarly journals Spectroscopic and chemical analysis of a Nigerian hybrid Hevea Brasiliensis (Rubber) seed oil for product quality assessment in technical applications

2020 ◽  
Vol 19 (9) ◽  
pp. 636-643
Author(s):  
E. Onoji Samuel ◽  
E. Iyuke Sunny ◽  
I. Igbafe Anselm ◽  
O. Daramola Michael
Keyword(s):  
Chemical Analysis ◽  
Quality Assessment ◽  
Product Quality ◽  
Hevea Brasiliensis ◽  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed

scholarly journals Oxirane Ring Opening of Rubber (Hevea Brasiliensis) Seed Oil by Perfomic Acid

2019 ◽  
Vol 9 (1) ◽  
pp. 5070-5073
Keyword(s):  
Hydrogen Peroxide ◽  
Formic Acid ◽  
Hevea Brasiliensis ◽  
Ring Opening ◽  
Seed Oil ◽  
Ftir Analysis ◽  
Rubber Seed Oil ◽  
Renewable Source ◽  
Rubber Seed

Studies on the epoxidation of rubber (Hevea brasiliensis) seed oil, a renewable source with formic acid was performed in the presence of 30% hydrogen peroxide at a of temperature 40, 50,60,70 oC. The process is favoured by an increase in temperature forming a product with high oxirane content which is as a result of mole ratios of formic acid and hydrogen peroxide. Products of high oxirane content are commercialy viable in the production of polyvinyl chloride (PVC). Natural rubber and other products can be obtained from this in- situ technique. Studies in this research shows that the rate of epoxidation increases with an increase in temperature.Oxirane values of 2.30, 3.62 and 4.73 for the various temperature. However high oxirane content of 6.22 was obtained at 70 oC which is in line with literature. FTIR analysis was also carried out on the epoxidized rubber seed oil which shows the peaks of oxirane cleavage.

Oil yield and fuel property study of rubber seed oil-based biodiesel: a promising feedstock for sustainable bio-energy production

2021 ◽  
Vol 12 (4) ◽  
pp. 318
Author(s):  
Rishikesh Deka ◽  
Jyotirmoy Sarma ◽  
Jayanta K. Sarmah
Keyword(s):  
Energy Production ◽  
Seed Oil ◽  
Oil Yield ◽  
Rubber Seed Oil ◽  
Fuel Property ◽  
Rubber Seed

The influence of seed and oil storage on the acid levels of rubber seed oil, derived from Hevea brasiliensis grown in Xishuangbanna, China

Energy ◽  
2011 ◽  
Vol 36 (8) ◽  
pp. 5403-5408 ◽  
Author(s):  
Yixin Zhu ◽  
Jianchu Xu ◽  
Peter E. Mortimer
Keyword(s):  
Hevea Brasiliensis ◽  
Seed Oil ◽  
Rubber Seed Oil ◽  
Rubber Seed ◽  
Oil Storage
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