Possibile Application of Ligno-cellulose Nano Carbon as Biosensor |
Author : Gustan Pari Adi Santoso Djeni Hendra Buchari Akhirudin Maddu Mamat Rachmat Muji Harsini Bunga Ayu Safitri Teddi Her yanto & Saptadi Darmawan |
Abstract | Full Text |
Abstract :In the forest products field, the nano technology that can be developed is among others nano carbon derived from lignocellulosic stuffs. In relevant, this paper observes information and technology on the charcoal processing from lignocellulosic stuffs into nano carbon. The lignocellulosic stuffs used in this research consisted of teak wood, further carbonized into charcoal at 400-500 C using drum kiln and then purified by re-carbonizing it at 800 C for 60 minutes by using steam and sodium hydroxide (KOH) 15% as activation agent. Prior to purification, the charcoal sustained the doping (intercalation) process with Nicel and re-carbonize again at 900 C for 60 minutes. The qualities and structure of all the resulting carbon were evaluated using nano scale device pyrolysis-gas chromatography mass spectrophotomtry (Py- GCMS), scanning electron microscope-energy disverse spectrophotometry (SEM-EDS and X-ray diffraction (XRD), and examined as well of their dielectric characteristics. Result show charcoal was examined of its physical and chemical properties. Manufacture of biosensor by using molecularly imprinted polimer (MIP) system based on carbon paste and optimizing. Results show that nano carbon from lignocellulose can be made for biosensor with MIP system. Optimized formulation were mixed with15% MIP, 45% carbon and 40% parafine with nernst factor of 49 mV/decade and limit detection of 1.02x10 M at pH 4 |
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Utilization of Merbau Wood Extract to Bind Laminated Bamboo Products |
Author : Adi Santoso I.M. Sulastiningsih Gustan Pari & Jasni |
Abstract | Full Text |
Abstract :The report describes the use of adhesive made from merbau wood extract ( Spp ) which is allowed to copolymerize Intsia .with resorcinol, formaldehyde under alkaline conditions, and tapioca as an extender. The adhesive was used to manufacture three-ply composite board consisting of a back and core layers sengon (Anthocephalus chinensis), and jabon made from (Falcataria mollucana)while the face layer was made either one of three bamboo species, namely, andong (Gigantochloa pseudoarundinacea), mayan (Gigantochloa robusta), and bitung Gigantochloa robusta DendrocalamusKurz. asper .). Result shows that physical-mechanical properties of the composite board with using adhesive bySchult. F formula (% of weight ratio) Merbau extract : Resorcinol 50% : Formaldehyde 37% : Extender = 100 : 10 : 10 : 5) were similar with to those of products made of synthetic phenolic adhesive and classified as an exterior quality type with E or F**** types of low formaldehyde emission. |
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Decay Resistance of Six Wood Species from Papua Against Destroying Fungi |
Author : Sihati Suprapti Djarwanto & Andianto |
Abstract | Full Text |
Abstract :The resistance of six wood species against eight strains of destroying fungi was studied. Six wood species of ketapang (Terminalia complanata K. Sch.), pala hutan (Gymnacranthera paniculata Warb.), bipa (Pterygota horsfieldii (R.Br.) Kosterm.), kelumpang (Sterculia shillinglawii), manggis (Pentaphalangium parviflorum) and lancat (Mastixiodendron pachyclados Melch.), were observed using Kolle-flask methods. Wood samples of inner and outer parts of the log were prepared from each species. Results show that M. pachyclados is classified as resistant (class II), P. horsfieldii is moderately resistant (class III), while the other four species are not-resistant (class IV) against destroying fungi. The average weight loss of the inner part is lower than that of the outer part logs, then both groups are classified as not-resistant wood (class IV). The lowest decay resistance is obtained from outer part of G. paniculata exposed to Pycnoporus sanguineus, while the highest decay resistance is taken from outer part of M. pachyclados exposed to Tyromyces palustris. The fungal ability to decay wood from the highest to the lowest are P sanguineus Polyporus arcularius Polyporus . Schizophyllum commune Lentinus lepideus , sp T palustris Phlebia brevispora, , Chaetomiumglobosum respectively. |
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Enzymatic Bioethanol Production of Oil Palm Trunk Waste (Elaeis guineensis) Using Surfactant |
Author : Ina Winarni Sri Komarayati & T. Beuna Bardant |
Abstract | Full Text |
Abstract :Biomass is an alternative potential raw materials for biofuels or bioethanol production. This paper studies bioethanol production of the oil palm trunk waste. The trunk was divided into three parts; parenchym (P), vascular bundle (VB) and the ture a s sugar content reduction amix of parenchym and vascular bundle (PVB). Result show that of all tre tments (using surfactant) before fermentation higher than without surfactant (control) at 10 and 15 FPU/g substrat of cellulase is that econcentration. The highest ethanol content (1.63%) from parenchyma with 15 FPU/g substrat of cellulase was recorded econcentration. |
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Antioxidant Potential and Cytotoxic Properties of Nine Species Skin Bark Extracts from Lore Lindu National Park |
Author : Saefudin & Efrida Basri |
Abstract | Full Text |
Abstract :Bark extracts of nine plant species from Lore Lindu National Park (NP) had been studied for the antioxidant potential and their cytotoxic effects. The antioxidant activity was tested by determining the peroxide value (POV) using the iodometric method. The toxicity test was done by counting the death of shrimp larva using Brine (Artemia salina Schrimp)Lethality Test (BSLT) method. The test results showed three bioactive components (saponin, flavonoid, and polyphenol) were mostly obtained from the 3 plant species that have low POV, namely , Dysoxylumgaudichaudianum Gardenia augusta Nauclea orientalis , .and The most striking of cytotoxic effects (LC < 200 g/ml) were found from (170.86 g/ml), (182.89 g/ml), and Koordersiodendron pinnatum Nauclea orientalis Kleinhovia hospita (191.35 g/ml) extracts |
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