Journal of Agroindustrial Technology
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Diesel Oil Biodegradation Process By Mixed Culture Of Hydrocarbon Degrader Bacteria
Full text linkThree isolates name as Pseudomonas aeruginosa (PA), Pseudomonas pseudomallei (PP) and Enterobacter agglomerans (EA) are petroleum hydrocarbon degrader bacteria. They were grown in mineral medium and 10% diesel oil as carbon source. The diesel oil biodegradation by PAEA and PPEA are better than single or other mixed cultures. The diesel oil compounds are oxidized to intermediate product and detected as fatty acids ranged of nC18 to nC8, organic acids, and then it was mineralized. The mineralized products measured as methane, carbon dioxide, and carbon monoxide. This result showed that during hydrocarbon biodegradation of aliphatic compounds by those isolates through fatty acids formation, simple organic acids, and simple volatile organic carbon. The mineralized product of methane, carbon dioxide, and carbon monoxide were emitted to the environment. Keywords: Biodegradation, diesel oil, Pseudomonas, Enterobacter, minerallize
Optimization Of Rubber Seed (Hevea Brasiliensis) Drying In Rubber Seed Oil Extraction For Chamois Leather Tanning
Full text linkDrying is one of the important steps in oil extraction using mechanical pressing. It can decrease oil hydrolysis and increase yield of oil due to the decrease of oil affinity on the material surface and protein coagulation. Therefore, the oil will be released easily from seed in the oil extraction using the hydraulic pressing. Objectives of this research were to determine a combination of temperature and duration of drying of rubber seed prior to oil extraction in order to produce oil with the best yield and physico-chemical properties for chamois leather tanning, and to observe the potency of the rubber seed oil as a leather tanning agent. This research consisted of sortation of rubber seed, rubber seed drying using an oven, oil extraction using a hydraulic pressing, and analysis of physico-chemcal properties of the oil and residue of rubber seed after extracting its oil. Results of the research shows that the higher temperature and duration of rubber seed drying, the higher oil content in residue and colour of the oil, whereas yield, iodine number, acid number, free-fatty acid content of the oil, as well as water content of the rubber seed decreased. Based on the highest of yield and iodine number, the best treatment for the rubber seed drying was drying at 70oC for one hour. This condition resulted in oil with physico-chemical characteristics of oil: yield of 20.52%, colour of 4077 PtCo unit; density of 0.924, viscosity of 160 centipoises, iodine number of 146, acid number of 2.08, FFA of 1.04 %, saponification number of 184.58, and peroxide number of 30.46. The treatment gave oil content in the residue of 9.84 %. The rubber seed oil was potential for substituting fish oil as tanning agent, as it had iodine number of higher than 120.Keywords: drying, rubber seed, oil, oil tanning, tanning agent, chamois leather
The Novelty Issues In The Agroindustrial Research
Full text linkThis article discusses some issues of novelty in the agroindustrial research faced by graduate students in the department of Agroindustrial Technology. It proposes three types of novelty that students may select for their dissertation research, i.e., the novelty type of invention, improvement, and refutation. These types of novelty are categorized based on some fundamentals background taken from the works of some distinguished scientists and scholars from the early stage of science and technology development to the modern one. The article argues that if the novelty issues in the agroindustrial research can be perceived, the findings of the research will be the sources of agroindustrial development. The conjectures in this article are open for discussions, critiques, and objections simply for the sake of improvement of our agroindustry.Keywords: novelty, invention, innovation, refutation
ISSN : 0216 - 3160JURNAL TEKNOLOGI INDUSTRI PERTANIANVol. 19, No. 3, Desember 2009 Penanggung JawabKetua Umum Asosiasi Agroindustri Indonesia danKetua Departemen Teknologi Industri Pertanian, IPB Ketua Dewan EditorMarimin (IPB) Dewan EditorAgus H. Canny (AGRIN)Didik Purwadi (UGM) Dwiwahju Sasongko (ITB)E. Gumbira Sa’id (IPB)Koesnandar (BPPT)Tajuddin Bantacut (IPB) Editor PelaksanaIka Amalia Kartika (Ketua)Andes IsmayanaDwi SetyaningsihTiti Candra Sunarti SekretariatSri MartiniKetih Suketih PenerbitAsosiasi Agroindustri Indonesia (AGRIN) danDepartemen Teknologi Industri Pertanian (TIN)Fakultas Teknologi Pertanian (FATETA)Institut Pertanian Bogor (IPB) Alamat RedaksiDepartemen Teknologi Industri PertanianFakultas Teknologi PertanianInstitut Pertanian BogorKampus IPB Darmaga PO Box 220, Bogor 16002 Telp./Fax (0251) 8621974, 8625088e-mail : [email protected] Biaya Langganan per tahunPerorangan Rp. 100.000,-Institusi Rp. 150.000,- Permintaan langganan di kirim ke :Redaksi Jurnal Teknologi Industri PertanianDepartemen Teknologi Industri Pertanian, FATETA-IPBKampus IPB Darmaga PO Box 220 Bogor 16002Telp/Fax : 0251-8625088 dan 0251-8621974; E-mail : [email protected] BNI Syariah Bogor Capem Darmaga No.rekening 0174761727 atas nama Ketih Suketih
No full textISSN : 0216 - 3160JURNAL TEKNOLOGI INDUSTRI PERTANIANVol. 19, No. 3, Desember 2009 Penanggung JawabKetua Umum Asosiasi Agroindustri Indonesia danKetua Departemen Teknologi Industri Pertanian, IPB Ketua Dewan EditorMarimin (IPB) Dewan EditorAgus H. Canny (AGRIN)Didik Purwadi (UGM) Dwiwahju Sasongko (ITB)E. Gumbira Sa’id (IPB)Koesnandar (BPPT)Tajuddin Bantacut (IPB) Editor PelaksanaIka Amalia Kartika (Ketua)Andes IsmayanaDwi SetyaningsihTiti Candra Sunarti SekretariatSri MartiniKetih Suketih PenerbitAsosiasi Agroindustri Indonesia (AGRIN) danDepartemen Teknologi Industri Pertanian (TIN)Fakultas Teknologi Pertanian (FATETA)Institut Pertanian Bogor (IPB) Alamat RedaksiDepartemen Teknologi Industri PertanianFakultas Teknologi PertanianInstitut Pertanian BogorKampus IPB Darmaga PO Box 220, Bogor 16002 Telp./Fax (0251) 8621974, 8625088e-mail : [email protected] Biaya Langganan per tahunPerorangan Rp. 100.000,-Institusi Rp. 150.000,- Permintaan langganan di kirim ke :Redaksi Jurnal Teknologi Industri PertanianDepartemen Teknologi Industri Pertanian, FATETA-IPBKampus IPB Darmaga PO Box 220 Bogor 16002Telp/Fax : 0251-8625088 dan 0251-8621974; E-mail : [email protected] BNI Syariah Bogor Capem Darmaga No.rekening 0174761727 atas nama Ketih Suketi