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INDONESIA
Jurnal Penelitian Hasil Hutan
Published by Badan Penelitian dan Penegembangan Kehutanan
ISSN : 02164329     EISSN : 24428957     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management
Arjuna Subject : -
Articles 1,559 Documents
 47   48   49   50   51 
ANALISIS KOMPONEN KIMIA KAYU MANGIUM PADA BEBERAPA MACAM UMUR ASAL RiAU Gustan Pari; Saepuloh Saepuloh
Jurnal Penelitian Hasil Hutan Vol 17, No 3 (2000): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2817.035 KB) | DOI: 10.20886/jphh.2000.17.3.140-148

Abstract

Tulisan ini mengemukakan hasil analisis komponen kimia kayu dari kayu mangium pada beberapa macam umur. Analisis yang dilakukan meliputi penetapan kadar holoselulosa, selulosa, lignin, pentosan, abu, silika, kelarutan dalam air dingin, air panas, NaOH 1 % dan kelarutan dalam ethanol benzena.Hasil analisis memperlihatkan bahwa kadar holoselulosa berkisar antara 72,94-79,01%, selulosa 47,26-50,06%, lignin 20,99-27,06%, pentosan 15,89-17,45%, abu 0,26-0,88 %, silika 0,14-0,34 %. Kelarutan dalam air dingin 3,00-4,17%, air panas 6,02-9,26 %, Na0H 1 % 19,90-21,00% dan kelarutan dalam alkohol benzena berkisar antara 4,50-6,48%.Berdasarkan alas hasil analisis komponen kimia terutama dari kadar selulosa, lignin dan pentosan maka kayu mangium (Acacia mangium Willd) dengan umur 6 tahun, sangat baik untuk dibuat sebagai bahan baku pembuatan pulp dan kertas.
PEMANFAATAN SISA MEDIA JAMUR PELAPUK PADA DEKOMPOSISI LIMBAH PADAT PULP Acacia mangium Sihati Suprapti; Djarwanto Djarwanto; Sri Komarayati
Jurnal Penelitian Hasil Hutan Vol 35, No 4 (2017): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1357.895 KB) | DOI: 10.20886/jphh.2017.35.4.243-254

Abstract

Saat ini, jamur Ganoderma lucidum, Pleurotus ostreatus, dan P. sajor-caju berprospek untuk mendekomposisi limbah industri pulp dan kertas. Tulisan ini mempelajari kemungkinan pemanfaatan sisa media jamur pelapuk untuk dekomposisi limbah padat mangium. Jamur tersebut dibudidayakan terlebih dahulu pada media serbuk gergaji kayu sengon (Falcataria moluccana) selama tiga bulan. Sisa media jamur digunakan sebagai aktivator degradasi, dengan cara diinokulasikan ke dalam limbah padat pulp Acacia mangium, kemudian diinkubasikan selama enam bulan. Hasil penelitian menunjukkan bahwa dalam tiga bulan masa inkubasi, nilai Efisiensi Konversi Biologi (EKB) oleh jamur pada serbuk gergaji kayu sengon adalah 13,41% (G. lucidum), 47,11 % (P. ostreatus), dan 38,06% (P. sajor-caju). Inokulasi jamur ke dalam limbah padat meningkatkan nisbah C/N sebesar 71,59%. Semakin tinggi konsentrasi inokulan G. lucidum, nilai C/N cenderung meningkat. Setelah enam bulan, kadar unsur haranya turun sebesar 48,76% (N); 35,42%(P), dan 25% (K), namun kadar Ca dan Mg meningkat masing-masing sebesar 112,9% dan 6,67%. Pada kontrol terjadi penurunan sebesar 66,12% (Ca); 68,75% (P); 4,17% (Mg), dan terjadi kenaikan kadar K dan Ca masing-masing 2,08% dan 64,52%. Rata-rata nilai kapasitas tukar kation (KTK) limbah padat setelah inkubasi selama enam bulan naik 3,85% (kontrol) dan 56,8% (yang diinokulasi dengan jamur).
PENGGUNAAN TRAKTOR PERTANIAN UNTUK PENGOLAHAN TANAH DALAM PEMBANGUNAN HTI Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 10, No 6 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (19995.942 KB) | DOI: 10.20886/jphh.1992.10.6.235-244

Abstract

A study on the use of farming tractor for  land tillage in timber estate  establishment was conducted at timber  estate area of  PT Barito Pacific Group in  South Sumatra  in 1991. The  objective  was to obtain technical and economic data on land tillage in timber estate using farming  tractor.  For this purpose, data on productivity, specification,  fixed cost and operating cost of ford farming tractor were collected. the  resuits were as follows   :1.    Land tiliage comprized three  activities namely.first plowing. second  plowing and harrowing.2.    Productiitrity in the first plowing ranged between 0.2184 ha/hour and 0. 3048 ha/hour with an average of 0. 2601 ha/hour.3.   Operation costs  in the first plowing varied from  63.206.  -/ha to Rp. 85,027.-/ha  with an average of   Rp. 71, 782.-/ha.4.   Productivity in the second plowing ranged between 0.2100  ha/hour and 0. 3240 ha/hour with an average of 0.2703 ha/hour5.    Operation COSIS in the second plowing varied from Rp. 57.315.,-/ha  to Rp. 88,428,-/ha  withan average of Rp.   69,583.-/ha.6.    Tractor productivity  in harrowing ranged between 0.3818 ha/hour and 0.5593  ha/hour with an average of 0.4702  ha/hour.7.    Costs for harrowing  varied from  Rp. 34,250.-/ha to Rp. 49,581,-/hq  with an average of Rp.  40,647.-/ha8.   Average cost of land  tillage using ford farming tractor was Rp. 182,012.-/ha.9.   it is suggested that soil condition in land tillage be considered to  save cost and power.
ANALISIS KIMIA DUA PULUH TUJUH JENIS KAYU JAWA BARAT Kayano Purba; Endang Sumarna
Jurnal Penelitian Hasil Hutan Vol 4, No 3 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3085.103 KB) | DOI: 10.20886/jphh.1987.4.3.26-29

Abstract

Chemical analyses of wood species from different islands of Indonesia has been started by several workers. Most of the species studied were obtained from East Kalimantan, South  Kalimantan,  Central Kalimantan, East  Java  and  South   Sumatera.  The  analyses comprised the determination of cellulose, lignin, pentosan, ash, extractives and the solubility in one percent of sodium hydroxide. These analyses were conducted to determine their basic characteristics and ultimate uses of the wood. In this report the result of chemical analyses of 27 wood species from  West Java are presented as supplementing reference to the previous ones.The analyses reveal that the cellulose content ranges from  40.99-55.54 percent, pentosan from  12.49-19.54 percent and lignin from 17.20-28.86percent.The ash and silica content vary considerably from 0.19-1.43 percent and from 0.05-0.79 percent, respectively.The solubility in cold water varies from 0.11-7.20 percent, in hot water from 2.18-10.44 percent, in alcohol benzene (1 : 2) from 0.54-8.70 percent, and in one percent sodium hydroxide solution from 11.01-37.94 percent.
KAJIAN PENGGUNAAN LAHAN HUTAN DAN PERUBAHANNYA MENGGUNAKAN DATA CITRA SPOT LANDSAT DAN RADAR Endom, Wesman; Haryono, Haryono
Jurnal Penelitian Hasil Hutan Vol 22, No 2 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2004.22.2.95-111

Abstract

To enhance effectiveness of natural resources evaluation an assessment on the trend of land- use and its impacts is necessary. This is needed by regions which are interacted each others and covering large areas. A remote sensing technology is a reliable and appropriate choice for such area. A study on the land-use assessment was employed using manual method through the implementation of Spot, Landsats, and Radar imageries. The results were as follows:1) Until the year 1980, the concession area situated at Long Nah, administratively under authority of PT Inhutani I. East Kalimantan were mostly still covered by virgin forest with occasional and scattered small villages2)  Manual interpretation using imageries of Spot, Landsats and Radars disclosed the following results: (a) Spot imageries turned out to be 64. 7% as the correct figure and 35.3% as the false figure;, (b) Landsat imageries interpreted 53.3% as correct and 46.7% as false; (c) Radar imageris conducted in March and April 1998 revealed 38. 1% as correct and 61.9% as false.3) Changes forest land-use during the period 1980-1998 occurred in low-land dry forest andpartly in swampy forest, which were further converted to the plantation forest. Meanwhile, the changes for other land-uses among others agriculture were almost insignificant ( less than 3%). This is because soil layers in the corresponding land were thin and acidic rendering unsuitable for agriculture activities.4)  In order to reduce high commission error, the appropriate number of strata relevant to the land-use interpretation should not be too detailed but adequately established as simply aspossible.
PENYARADAN TERKONTROL UNTUK MINIMASI KERUSAKAN HUTAN: KASUS DI DUA PERUSAHAAN HUTAN DIKALIMANTAN TENGAH Sona Suhartana; Maman M Idris
Jurnal Penelitian Hasil Hutan Vol 16, No 2 (1998): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2161.751 KB) | DOI: 10.20886/jphh.1998.16.2.69-78

Abstract

Penelitian telah dilakukan pada tahun 1997 di dua perusahaan hutan di Kalimantan Tengah untuk meminimalkan kerusakan tegakan tinggal dan jalan sarad tidak produktif yang dapat menjamin tercapainya pemanfaatan hutan yang berkelanjutan.Data yang dikumpulkan adalah : jumlah pohon ditebang, jumlah pohon berdiameter _ 20 cm dan ke atas, pohon rusak, kemiringan lapangan dan luas lahan terbuka.Hasil penelitian menunjukkan hal-hal sebagai berikut:1 Rata-rata kerusakan tegakan tinggal akibat penyaradan terkontrol adalah 8,5% dan untuk konvensional sebesar 13,5%. Terjadi penurunan kerusakan sebesar 5,0% (sangat berbeda nyata pada taraf 99%).2. Rata-rata jalan sarad tidak produktif akibat penyaradan terkontrol adalah 3, 7% dan untuk konvensional 10, 0%. Terjadi penurunan jalan sarad tidak produktif sebesar 6,3% (sangat berbeda nyata pada taraf 99%).3. Rata-rata keterbukaan lahan akibat penyaradan terkontrol adalah 11,3% dan untuk konvensional 15,3%. Terjadi penurunan derajat keterbukaan lahan sebesar 4% (berbeda nyata pada taraf 95%). Berdasarkan hasil penelitian, maka dalam pelaksanaan pemanenan kayu seyogyanyalah menggunakan teknik terkontrol yang sesuai dengan aturan TPTI karena dapat meminimalkan kerusakan hutan yang terjadi.
PENGARUH PENAMBAHAN UREA DAN MELAMIN PADA PEREKAT UREA FORMALDEHIDA TERHADAP EMISI FORMALDEHIDA DAN SIFAT FISIS-MEKANIS PAPAN PARTIKEL Paribotro Sutigno; Adi Santoso
Jurnal Penelitian Hasil Hutan Vol 14, No 5 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6929.706 KB) | DOI: 10.20886/jphh.1996.14.5.178-191

Abstract

The formaldehyde  emtsston of particleboard  bonded  with  urea formaldehyde  (UF) can affect health, especially if it is used in a room with limited ventilation.  To reduce formaldehyde emission,  the glue can be mixed with catching agent.  In this report, the effect of using urea and melamine as catching agents on formaldehyde  emission,   and on the physical  and mechanical properties  of UF bonded particleboard is described.The effect of percentage  of catching agent on formaldehyde  emission is highly significant. The higher  the percentage  of catching agent,  the lower formaldehyde  emission of particle­board.  On urea­melamine  (U/M) ratio of  4,  the formaldehyde  emission of particleboard  can meet American  and Japanese  Standard on the percentage  of 5,  10  and 15%,  while on  U/M ratio of 7 and 10,  the formaldehyde  emission can conform the standards on the percentage  of 10  and 15%.   The effect  of addition of  urea and melamine  was significant and  even highly significant on the physical and mechanical properties,  but not on the shear strength.  The effect of U/M ratio was either not significant.Key words :  particleboard,  urea-melamine,  formaldehyde emission,  physical and  mechanical properties.
STRUKTUR ANATOMI BEBERAPA JENIS KAYU HUTAN TANAMAN INDUSTRI Sri Rulliaty M; Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 5, No 6 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (9738.589 KB) | DOI: 10.20886/jphh.1988.5.6.326-336

Abstract

Gross and  anatomical  features  of  nine Industrial  Forest  Plantation Timber  Species  were studied  and described  for identification  purposes. The  result  shows  that  each wood  species   can be  distinguished one  from  the other  except those species  which  belong  to  the same genera.
BEBERAPA SIFAT FISIS DAN KIMIA MINYAK BIJI SAGA LAUT (ADENANTHERA PAVONINA) Gustan Pari; M Syachri
Jurnal Penelitian Hasil Hutan Vol 6, No 6 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2817.732 KB) | DOI: 10.20886/jphh.1989.6.6.380-383

Abstract

The  result  of  a study   on some  physical  and chemical  properties  of saga laut seed oil prepared  using pressing  method is presented   in this  report.The  result  shows   that  the  average  value  of  moisture   content,'  boiling  point,  specific  gravity,  iodine  number,   acid number   and saponification    value  respectively   are 0,137  percent,   166, 7 degrees celcius,  0,939,   31.04,   10,33  and  166, 72. Properties  of saga laut  seed  oil appear  to  be close  to  tengkawang  oil.
SAKARIFIKASI SERAT TANDAN KOSONG DAN PELEPAH KELAPA SAWIT SETELAH PRETREATMENT MENGGUNAKAN KULTUR CAMPURAN JAMUR PELAPUK PUTIH Phanerochaete chrysosporium dan Trametes versicolor Euis Hermiati; Lucky Risanto; Sita Heris Anita; Yosi Aristiawan; Ahmad Hanafi; Haznan Abimanyu
Jurnal Penelitian Hasil Hutan Vol 32, No 2 (2014): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2014.32.2.111-122

Abstract

Penggunaan kultur campuran jamur pelapuk putih pada proses pretreatment bahan lignoselulosa belum banyak diteliti. Penelitian ini bertujuan untuk mempelajari pengaruh penggunaan kultur  Phanerochaete chrysosporium dan Trametes versicolor pada proses pretreatment serat tandan kosong dan pelepah kelapa sawit terhadap hasil sakarifikasinya. Inokulum P. Chrysosporium dan T. versicolor dituangkan ke dalam sampel substrat serat tandan kosong dan pelepah kelapa sawit (40-60 mesh) yang telah disterilkan, masing-masing sebanyak 5% (w/v), sehingga total inokulum yang ditambahkan ke dalam kedua macam substrat masing-masing 10% (w/v). Sampel diinkubasikan pada suhu ±27°C selama 4 minggu. Sebagian dari contoh diambil dan lalu diperiksa setelah masa inkubasi 1, 2, 3, dan 4 minggu. Sakarifikasi dilakukan menggunakan enzim selulase sebanyak 20 FPU per g biomassa dan β-glukosidase dalam shaking waterbath pada suhu 50°C selama 48 jam. Analisis gula pereduksi, glukosa dan xilosa dilakukan terhadap hasil sakarifikasi. Rendemen gula pereduksi, konsentrasi glukosa dan xilosa tertinggi dari tandan kosong kelapa sawit. diperoleh dari sakarifikasi serat dengan pretreatment selama 4 minggu, yaitu masing-masing 13,08%, 0,86 mg/g dan 0,13 mg/g, sedangkan rendemen gula pereduksi, konsentrasi glukosa dan xilosa tertinggi dari pelepah kelapa sawit didapatkan dari sakarifikasi substrat dengan pretreatment selama 2 minggu, yaitu masing-masing 8,98%, 0,92 mg/g dan 0,23 mg/g.

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