PENGERINGAN KAYU KARET (Hevea brasiliensis) DENGAN METODE RADIASI MATAHARI (GREEN HOUSE) (original) (raw)
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This study aims to determine the optimal drying time of rubber wood (Hevea brasiliensis) related to preservation by the method of hot and cold immersion using boric acid material so as to prolong the use of wood and also reduce costs and can be used as a reference in research. The parameters tested in the preservation of wood are theoretical absorption and retention values. The optimal drying time of rubber wood (Hevea brasiliensis) for the preservation process of the absorption value and theoretical retention by the method of hot and cold immersion using boric acid material is at 2 weeks drying time. Factors that influence the absorption and retention are caused by water content and length of immertionPenelitian ini bertujuan untuk mengetahui waktu pengeringan kayu karet (Hevea brasiliensis) yang optimal terkait pengawetan dengan metode perendaman panas dingin menggunakan bahan asam borat sehingga dapat memperpanjang pemakaiaan kayu dan juga menekan biaya yang dikeluarkan serta bis...
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Land resources are natural resources that are very important for human survival because natural resources are needed in every life. Land evaluation is an estimate of suitability for a particular land use in order to optimize the existing land in an area. This study aims to assess the suitability class of rubber plantations in environmental conservation efforts in Giri Nanto Village, Seluma Regency. The study was conducted in 2015 with a free survey method, analyzed descriptively qualitatively and quantitatively through an analysis approach to environmental impact and mapped through analysis using Arc.Gis software 10.0, land map units, and rubber land suitability criteria with a map scale of 1: 85,000. The results showed that the total area of potential land in the Giri Village area would later be 1,185 ha. The distribution of potential land suitability classes for rubber plants was mostly S2 land classes (quite suitable) covering 622.82 ha (8.9%), S3 class (marginal suit) covering ...
ANALISIS PEMASARAN KARET (Hevea brasiliensis ) DI DESA PULAU SARAK KECAMATAN KAMPAR KABUPATEN KAMPAR
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This research was aimed to know the degree of Fenol compound, total acid and the activity of liquid smoke of Rubber (Hevea brassiliensis) Seed Shell also the application in obstructing the rancidity of beef. The Fenol compound was determined by using Reagen Follon-Ciocalteu. The total acid was determined by using the method of titrated acids.The ability as the antioxidant was tested by DPPH method and the ability of obstructing the rancidity of beef was done by measuring the alteration of TBA value in beef as long as saved. The result was shown the fenol compound in liquid smoke of Rubber Seed Shell as much as 0,84 % and the acetic acid content was 4.725%. The antioxidant test was produced IC50 value as much as 101.27 ppm. According to the IC50 value which got from the test that the liquid smoke of Rubber Seed Shell were included in moderate category. The increment of the liquid smoke of Rubber Seed Shell were able to suppress the rancidity of beef during the storage time. It was ma...
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The purpose of this research was to know: 1) weed dominancy in rubber replanting plantations before controlling, 2) weed control effectiveness both is chemically and manualy, 3) difference weed SDR value after the chemically and manualy. This research was conducted in comunity control have been done Plantation area eg. Suka Damai Pondok Meja village, Mestong district, Muaro Jambi Regency, Jambi province. . Research conducted for ± 2 months ( December 2014 to January 2015). Experiment using a completely randomized design with four treatment, namely : P0: control(without treatment), P1: parakuat dichloride dose of 6 ml 2400 ml-1 water for treatment plots, P2: glyphosate isopropyl amine dose of 6 ml 2400 ml water-1 for treatment plots, P3: manualy control by pulling. Each treatment has four times replication. Dominant weed acreage replanting of rubber Suka damai before treatment weed control is Euphorbia hirta (SDR 29.02%), Cleome rutidospermae (SDR 19.70 %), Paspalum conjugatum (S...
Abstrak: Studi Metode Penurunan Kadar HCN Pada Biji Karet (Hevea brasiliensis) Sebagai Bahan Pangan Alternatif. Biji karet mempunyai peluang untuk dieksplorasi sebagai bahan pangan alternatif karena kandungan proteinnya yang tinggi. Biji karet mengandung zat anti nutrisi yaitu hidrogen sianida (HCN) sehingga harus diturunkan kadarnya agar aman dikonsumsi. Penelitian ini dilakukan untuk mengetahui metode penurunan kadar HCN pada biji karet dengan menggunakan rancangan acak lengkap (RAL) faktorial. Dua metode yang digunakan dalam penelitian ini antara lain, metode pertama yaitu perendaman biji karet dalam air dengan penambahan arang sekam padi dan NaCl (garam kasar) perbandingan 1:1 dengan konsentrasi 20%, 30% dan 40% dan lama perendaman 12 jam, 24 jam dan 36 jam. Metode kedua dengan penambahan arang aktif dan NaCl p.a (1:1) dengan konsentrsi 20%, 30%, 40% dan lama perendaman 6 jam, 12 jam, 18 jam. Nilai penurunan HCN terbaik dicapai dari metode pertama 135 mg/Kg biji karet, dari 3 perlakuan perendaman 12 jam, 24 jam, 36 jam dengan penambahan arang sekam padi dan garam kasar konsentrasi 40%. Sedangkan nilai penurunan kadar HCN terbaik pada metode kedua adalah 405 mg/Kg biji karet dari perlakuan perendaman 6 jam, 12 jam, 18 jam dengan konsentrasi penambahan arang aktif dan NaCl p.a 40%. Merujuk nilai penurunan HCN yang diperoleh pada metode pertama 135 mg/Kg berat biji karet, maka biji karet pada perlakuan ini aman untuk diolah menjadi bahan makanan dan dikonsumsi sehari-hari karena tidak melebihi ambang batas 1 mg per kilogram berat badan per hari. Kata Kunci: arang aktif, asam sianida, bahan pangan sumber protein, biji karet
PEMBUATAN BIOETANOL BERBAHAN BAKU KAYU KARET TIDAK PRODUKTIF DENGAN METODE HIDROLISIS ASAM
Bioetanol merupakan salah satu biofuel yang hadir sebagai bahan bakar alternatif yang ramah lingkungan dan sterbarukan. Komponen utama pada limbah pertanian dan industri yang digunakan untuk produksi bioetanol adalah lignoselulosa yang terdiri dari selulosa, hemiselulosa dan lignin. Kayu karet yang tidak produktif (KKTP) dapat diolah menjadi bioetanol. Etanol dibuat dengan proses hidrolisis asam dan fermentasi dengan bantuan Saccharomyces Cereviciae. Penelitian ini bertujuan mempelajari pemanfaatan KKTP untuk dibuat menjadi etanol. Penelitian dilakukan dengan penyiapan KKTP, selanjutnya KKTP didelignifikasi dengan menggunakan larutan natrium hidroksida (NaOH) dan dihidrolisis menggunakan asam sulfat (H 2 SO 4 )encer dengan variasi konsentrasi (2%,3%,4%, dan 5%) kemudian difermentasi dengan variasi waktu (3 hari, 5 hari, 7 hari, 9 hari, dan 12 hari). Etanol akan dihasilkan setelah dipisahkan dengan menggunakan proses destilasi.Kemudian analisa kadar glukosa dan kadar etanol menggunakan alat kromatografi gas. Hasil penelitian menunjukkan bahwa etanol tertinggi terkandung pada sampel 8 sebesar 4,60%. Sampel 8 dihasilkan dari fermentasi 7 hari dan konsentrasi asam 3%.