Green world

emanfaatan Waste Cangkang Prawn - Upon Which Friendly Pengawet Wood [of] Environment
Prawn [is] pledge commodity from fishery sector which [is] generally exported in the form of frost. Potency produce the prawn in Indonesia from year to year increasing. During the time the mean Indonesia prawn potency mount equal to 7,4 gratuity [of] per year.< per gratuity 7,4 equal to mounting this potency prawn Indonesia mean During mounting. non-stoped [by] year to from [in] congelation Potency production. form in exported generally which the commodity pledge sector fishery
Year data 2001, national prawn potency reach 633.681 ton. With fast assumption [of] the improvement remain to, hence in the year 2004 prawn potency estimated [by] equal to 785.025 ton. From prawn coagulation process to export, 60-70 percentage of prawn weight become waste ( part of husk and lead) [is] so that estimated will be yielded [by] a prawn waste [of] equal to 510.266 ton.
Waste so much, [is] otherwise handled precisely, will generate negative impact for environment, because during the time the waste cangkang prawn exploiting [is] only limited for just pakan livestock like duck, even [is] often let to decay.
Cangkang Prawn contain Iihat vitamin [of] khitin [of] about 99,1 gratuity. If processed furthermore with through some phase, will be yielded [by] khitosan, that is 1. Dimineralisasi
Waste Cangkang prawn washed to emit a stream of, dried below/under sunshine run dry, [is] then milled become serbuk [of] size measure 40-60 mesh. [Is] later;then mingled [by] a chloride acid 1,25 N with comparison 10:1 for pelarut compared to [by] a prawn husk, last heated [at] temperature 90°C during one clock. Residu in the form of padatan washed until neutral pH and [is] hereinafter dried in oven [of] [at] temperature 80°C during 24 clock 2. Deproteinisasi
Prawn Waste which have dimineralisasi [is] later;then mixed with [by] a hydroxide sodium condensation 3,5 gratuity with comparison [of] [among/between
Waste so much, [is] otherwise handled precisely, will generate negative impact for environment, because during the time exploiting of waste of cangkang of prawn [is] only limited for pakan of just livestock like duck, even [is] often let to decay.
Cangkang of Prawn contain Iihat vitamin of khitin [of] about 99,1 gratuity. If processed furthermore with through some phase, will be yielded [by] khitosan, that is 1. Dimineralisasi
Waste of Cangkang of prawn washed to emit a stream of, dried below/under sunshine run dry, [is] then milled become serbuk of size measure 40-60 mesh. [Is] later;then mingled [by] acid of chloride 1,25 N with comparison 10:1 for pelarut compared to [by] a prawn husk, last heated [at] temperature 90°C during one clock. Residu in the form of padatan washed until neutral pH and [is] hereinafter dried in oven [of] [at] temperature 80°C during 24 clock 2. Deproteinisasi
Waste of Prawn which have dimineralisasi [is] later;then mixed with [by] condensation of sodium of hydroxide 3,5 gratuity with comparison [of] [among/between] pelarut and cangkang of prawn 6:1. [Is] hereinafter heated [at] temperature 90°C during one clock. filtered Last condensation and made cool [is] so that obtained [by] washed later residu padatan until neutral pH and dried [at] temperature 80°C during 24 clock 3. Deasetilisasi Khitin become khitosan
Khitosan made enhancedly [is] hydroxide sodium ( 60 gratuity) with comparison 20:1 ( pelarut compared to [by] khitin), last heated [by] during 90 minute with temperature 140°C. Condensation [is] later;then filtered to get residu in the form of padatan, [done/conducted] [by] last [of] wash with water until neutral pH, [is] later;then dried by oven [is] temperature 70°C during 24 clock.
Khitosan measure up to dissolve in a[n acid solution of organic, but insoluble in other organic pelarut like methyl of sulfoksida as well as insoluble [at] pH 6,5. While good pelarut khitosan [is] acid of acetate
At the moment khitosan [of] a lot of exploited in the field of industry, fishery, and the health beyond the sea, like for the sheating, glue, penstabil, and also as polymer in the field of polymer technology.
After khitosan obtained, basically all method of wood pickling, that is method of unstressed pickling, method of pickling with pressure, diffusion method, and sap replacement method, can be weared.
application of Khitosan upon which pengawet of wood proven effective to pursue growth of mushroom of pelapuk of wood and some type of other;dissimilar mushroom, like Fusarium oxysporum and Rhizoctania solani, and also improve degree of proteksi of wood to white ants of dry wood and creep land;ground. Even, wood conserved by khitosan with method of perendaman teksturnya become softer.
This as according to nature of khitosan which can form coat of transparent and slippery film. [The] mentioned indicate that khitosan own potency of sebagah of substance of finishing capable to improve tekstur of wood surface.
For wood of bold chromatic, like nyatoh yellow, sengon, ramin, and the pine, pickling by khitosan can improve appearance of wood in the case of colour of wood become bolder. change of the Colour because of Iihat vitamin of colour of karotenoid [of] found on prawn. But, to get result nicely, in course of pickling have to be paid attention to to hit wood condition, pickling method, preservative type, treatment [of] before pickling to wood, and the preservative concentration.
From environmental facet, use of khitosan upon which pengawet of peaceful wood relative because in character which is the non toxic and biodegradable. Cause, during the time the preservative which [is] often used to represent poisonous chemicals [is] which the friendliness less be environmental and unbiodegradable.
From economic side, exploiting of khitosan from waste of cangkang of prawn for preservative of wood very beneficial because [his/its] raw material in the form of waste and come from local resource ( local content).
For ekstrasi khitin from waste of cangkang
prawn of rendemennya [of] equal to 20 gratuity, while rendemen khitosan from khitin obtained [by] [is] about 80 gratuity. Hence from that, with extract of waste of cangkang of prawn as much 510.266 ton, will be obtained [by] khitosan [of] equal to 81.642,56 ton.
Sum up very big remember most preservative of wood used during the time still be imported so that will economize state's stock exchange. To forwards nya, if waste cangkang of this prawn [is] managed technologically [is] correct, will become alternative of cheap preservative, natural, environmental friendliness, and can conducive to state's stock exchange [of] if exported out country.
Because pickling of wood with natural preservative, besides environmental friendliness, also add a period of/to wearing the wood which later will be able to economize use of wood in the national so that can prevent the happening of improvement of damage of forest and assist to realize ground of[is continuation of forest.
Gift of Wiji Prasetiyo, S Hut UPT Balitbang Biomaterial LIPI Cibinong,