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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
 40   41   42   43   44 
ANATOMI DAN IDENTIFIKASI SEPULUH JENIS KAYU DARI KALIMANTAN TIMUR Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 3, No 4 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5571.723 KB) | DOI: 10.20886/jphh.1986.3.4.34 - 46

Abstract

The gross and anatomical features of ten wood species from Marangkayu Forest Area, East Kalimantan, were studied and docribed for identification purposes. Most of the samples observed had characters which matched the previous description of the species or genus. However, one sample, that is Lempung namit (Shorea leprosula Miq. ), showed characters that matched the previous description of the genus only but not the species.
STRUKTUR ANATOMI, SIFAT FISIK DAN MEKANIK KAYU PALADO (Aglaia sp.) Mody Lempang; Muhammad Asdar
Jurnal Penelitian Hasil Hutan Vol 24, No 2 (2006): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (821.746 KB) | DOI: 10.20886/jphh.2006.24.2.171-181

Abstract

Penelitian ini dilaksanakan untuk mengidentifikasi struktur anatomi, sifat fisik dan sifat mekanik kayu palado (Aglaia sp.) yang diambil dari hutan produksi alam di Kalukku Kabupaten Mamuju, Propinsi Sulawesi Selatan.Hasil penelitian menunjukkan bahwa palado memiliki kayu gubal berwarna putih sampai krem dan teras berwarna coklat muda sampai coklat kelabu; serat lurus, tekstur agak halus, pori sedikit (3 per.mm²) berbentuk lonjong dan tersebar tata baur; perforasi tipe sederhana; jari-jari luar biasa pendek, sempit dan jarang (tinggi 327 mm; lebar 25,52 mm dan frekuensi 5 per mm², parenkim tersebar atau baur. Panjang serat 1.132 mm dan diameter serat 25,61 mm; diameter lumen 17,39 mm; dan tebal dinding 1,64 mm. Kadar air kering udara 15,85%; berat jenis kering udara 0,48 dan berat jenis kering tanur (kerapatan) 0,53;  penyusutan kering udara ke kering tanur 2,71% (radial) dan 4,67% (tangensial); keteguhan lentur pada batas patah 612,72 kg/cm2 dan keteguhan tekan sejajar serat 402,28 kg/cm2.
SIFAT PULP KIMIA-TERMOMEKANIK (CTMP) KA YU MANGIUM (Acacia mangium Willd) DARI BERBAGAI TINGKAT UMUR Rena M; Siagian Siagian; Han Roliadi; Togar Hendrik Martua
Jurnal Penelitian Hasil Hutan Vol 19, No 4 (2001): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4391.773 KB) | DOI: 10.20886/jphh.2001.19.4.245-257

Abstract

This investigation deals with the assessment of mangium (Acacia mangium Willd.) wood plantation of various maturities for the manufactureof chemi-thermo-mechanical pulp (CTMP) with varying chemical (alkali) concentrations. The properties of CTMP examined were those related to its possibility for newsprint. The ages consisted of three levels (i.e. 6, 7 and 10 years) at which the respective mangium stands were normally harvested from their first rotation. Three ages groups, of mangium were felled for obtaining wood samples. Afterwards, the mangium woods were chipped for further investigation. The alkali concentrations for pre-pulping (chip- softening) stage were consecutively 2, 4, 6, and 8 percent. In the Asplund refiner, the softened chips underwent a 15 minute pre-steaming at 5 psi and then fiberized into pulp for 3 minutes in the Asplund refiner. The resulting pulp were determined for their yield, and further bleached by using peroxyde in 2 stages. The bleached pulps were also examined of their yield, and subsequently made into handsheet at the targeted grammage (50 gram per sq.m) for testings of their actual grammage, strength and optical properties.Data analysis reveals that different wood ages and varying alkali concentrations did not contribute significant effect on their bleached pulp yield. The pulp yields were relatively high in the range of 60-75 percent. The hand-sheets of pulp in terms of its grammage, ranged from 43.0 to 51.6 g/m2. These could satisfy the SNI (Indonesian National Standards) requirements for newsprint. The thicknesses of pulp sheets, which were above 0.10 mm, did not meet the newsprint pulp standard quality requirement. Physical properties of mangium CTMP as described by their tensile, and tear index were correlated positively with wood age. On the contrary, these properties were not affected by alkali concentrations. Further, the different wood maturities brought about significant changes in pulp brightness; and so did the alkali concentration, whereby the brightness was affected negatively. Further, the opacity of the pulp sheet was not affected by wood maturities and alkali concentrations.Wood of 10 years old and with alkali concentration at 2 percent were found to be the optimum treatment combination for its application in the manufacture of CTMP for newsprint. The grammage, thickness, physical, and optical properties of the resulting CTMP, satisfy the SNI requirement for newsprint.
PENGOLAHAN MINYAK KEMIRI DENGAN CARA PELARUTAN DAN PENGEMPAAN Bambang Wiyono
Jurnal Penelitian Hasil Hutan Vol 13, No 3 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3932.278 KB) | DOI: 10.20886/jphh.1995.13.3.110-117

Abstract

The objective of this research is to study the processing of candle nut oils by using solvent extraction and pressing techniques. In a solvent extraction technique, several solvents were applied in the experiment. The choice solvent was used to extract the treated candle nut seeds. In a pressing technique, five levels of pressing temperature were applied to extract untreated candle nut seeds. The effect of the temperatures was calculated by a complete randomized design. Relationship between the pressing temperature and oil properties was analysed with a polynomial orthogonal method.Results showed that a hexane solvent with pure analytical grade was the best solvent to extract candle nut oils as indicated by the highest yield of oils. Using this solvent, a dry-frying treatment on candle nut seeds gave the highest yield of oils, compared boiling and control treatments. In a pressing technique, the increasing of pressing temperature gave a highly significant effect on yields, specific gravity, peroxide and iodine numbers. It also gave a significant effecr on saponifiable number. A polynomial orthogonal analysis showed that pressing temperatures had a highly significant quadratic relationship to oil yields or iodine number, a linear relationship to peroxide number or spesific gravity, and a significant cubic relationship to saponification number. Based on the regression equation for iodine number, the optimum value of iodine number was obtained at a 93° C pressing temperature. At this temperature, the oil yield which could be produced was 59, 79 %. The candle ma oil produced at this temperature was the best oil quality, as indicated by the highest value of iodine number, 97.28.
PERCOBAAN FRAKSIONASI-DISTILASI MINYAK TERPENTIN DARI PINUS MERKUSII JUNG ET DE VRIESE Bambang Wiyono; Toga Silitonga
Jurnal Penelitian Hasil Hutan Vol 6, No 4 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4023.96 KB) | DOI: 10.20886/jphh.1989.6.4.231-234

Abstract

Turpentine  oil  was optained  from  rosin  factory   in Paninggaran,   Central  Java,  and  Sukun,  East  Java.   Both  samples were  separated   by  fractional  distilation   into  several  fractions.   The  distilling  was conducted   at boiling  temperature   with atmospheric   pressure.   The  boiling point   ranges  were  156  -   164°C  for  the  first  fraction;   164  -   167°C  for  the  second fraction;  167 -  170° C for  the third fraction;  and  170° C and  upward  for the residual fraction.The   results  indicated   that   the  amount   of  turpentine   fractions   from  Paninggaran  and  Sukun   were  consecutively 73.60%   and  70.0%  of  first  fraction:   1340%  and  15.80%   of  second  fraction;  3.17%   and 3.79%  of  third fraction;  and 9.97% and  9.86%  of  the  residual.  Based  on  the  boiling  temperature   of  each  component,    the  first  fraction   is assumed  to contain n-heptane,   p-thujene,    a-pinene,   and  camphene;   β-pinene    and  myrcene   in  the  second   fraction;  myrcene,   β-phellandrene, and  ∆3-carene  in  the  third  fraction;  and  the  residual  fraction   contains,   β-phellandrene. ∆3-carene,   p-cymene,   limonene, ά-and ɤ-terpinene,  etc.   The  major  components    of  turpentine   oil are ά-and β-pinene.   These  components    can  be obtained by  decreasing  the  boiling  range to  154  -   158° C for  ά-pinene   and  164  -   166° C for  β-pinene.  The  fractional   distillation with   these  temperatures   is expected   to  increase  the  utilization   of  turpentine   as raw material  for  synthetic pine  oil,  perfumery,   etc.
HASIL TUMPANG SARI HUTAN TERHADAP PENDAPATAN PESANGGEM DAN BIDANG DASAR TANAMAN POKOK DI CEPU, BLORA Akub J Abdurachman; Suwidji Basuki
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2013.527 KB) | DOI: 10.20886/jphh.1988.5.7.430-433

Abstract

 The  scarcity  of  agriculture  land and  the  increasing population around  the  forest  have aucsed pressure on  the forest resource.   Taungya  system  approach   is aimed  at  improving   the prosperity   of  the people  surrounding   the  forest  through tree planting  coupled   with  crops in  two  years period.The result of observation on Taungya system in Pasar Sore Forest District  Administrations, Cepu,  Central Java, revealed  that  the  present  income  from taungya  system   contributed   about  22  % of  total  income.  Other  interesting   result showed   that  soil fertilization   by peasant,   beside gives positive   effect on peasant  income,   it also causes positive  impact  on the  growth   of  trees  basal areas.  Some   variables analyzed   in  this study  are  taungya  income   (Y1),  the  cost of  production facility  such  as fertilizer  and  insectiside  cost  (X1) man power   (X2), non-taungya income   (X3),  and  basal growth   (Y2). The  relationship   resulted  in regression  models  as follows  : Y1  =   -32,23 + 14,04X1  +   0,23X2  -  0,04X3  (R2 = 0,83) Y2  =   2.009,45 + 326,09  X1 + 2,98  X2  - 1,29  X3  (R2 = 0,78)
PENCEGAHAN PERUBAHAN WARNA PADA KAYU JAMUJU (Podocarpus imbricatus) DAN KISAMPANG (Evodia aromatica BL.) DENGAN BAHAN DASAR DESINFEKTAN Agus Ismanto; Mohamad Iqbal
Jurnal Penelitian Hasil Hutan Vol 31, No 3 (2013): 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.2013.31.3.213-220

Abstract

PROSPEK PASAR SAGU Satria Astana; Hariyatno Dwiprabowo; Triyono Puspitodjati
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3419.215 KB) | DOI: 10.20886/jphh.1991.9.3.115- 121

Abstract

Based  on  the demand potential,sago starch has  a good prospect in both domestic and international domestic market, sago starch will be largely absorbed by the domestic High Frutose syroupe  (HFS) industry. A new plant of  total capacity as  much as 198.600 tonnes per annum is being considered by the indonesian Government. In interna­ tional market,  the demand potential  of sago  is promising. The developing countries alone will be facing the cereai, defisit of  67 million tonnes in  1990  and 105  million tonnes in 2000.  Sago starch is expected to contribute a sizeable quantityto overcome  these defisits.         
KETAHANAN BAMBU PETUNG (Dendrocalamus asper Backer) YANG DIAWETKAN DENGAN CCB TERHADAP SERANGAN PENGGEREK DI LAUT Mohammad Muslich; Sri Rulliaty
Jurnal Penelitian Hasil Hutan Vol 32, No 3 (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.2014.32.3.199-208

Abstract

Bambu adalah bahan lignoselulosa yang rentan terhadap serangan serangga termasuk penggerek di laut. Penelitian ini dilakukan sebagai informasi dasar pengawetan bambu menggunakan bahan pengawet CCB (Copper-bichromated boron) terhadap penggerek di laut. Lima belas batang bambu petung,masing-masing panjangnya 4 m, dibedakan bagian pangkal, tengah dan ujung. Semua batang bambu tersebut diawetkan dengan CCB 3% dengan proses modifikasi Boucherie selama 7 hari. Bambu yang sudah diawet, dibuat contoh uji berukuran panjang 30 cm dan lebar 5 cm dengan ulangan sebanyak 15 kali. Sebelum contoh uji dipasang di laut selama 6 bulan, retensi dan penetrasi bahan pengawet dicatat. Hasil penelitian menunjukkan bahwa semua contoh uji diserang oleh penggerek di laut dengan berbagai tingkat serangan. Contoh uji yang diawetkan dengan CCB mendapat serangan ringan, sedangkan yang tidak diawetkan mendapat serangan berat oleh penggerek di laut. Siafat anatomi bambu petung mempunyai jaringan ikatan pembuluh yang terdiri dari metaksilem dan phloem dengan diameter yang besar, sehingga mudah diawetkan. Rata-rata retensi bahan pengawet CCB pada contoh uji bagian pangkal adalah 13,62 kg/m3, sedangkan bagian tengah dan atas 11,47 kg/m3 dan 9,12 kg/m3. Semua contoh uji yang diawetkan dengan proses modifikasi Boucherie mencapai penetrasi 100%. Hasil identifikasi penggerek yang menyerang contoh uji adalah Teredo sp. dan Martesia striata.
SIFAT PENGKARATAN BESI PADA LIMA JENIS KAYU ASAL SUKABUMI Djarwanto Djarwanto
Jurnal Penelitian Hasil Hutan Vol 27, No 3 (2009): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2298.281 KB) | DOI: 10.20886/jphh.2009.27.3.280-289

Abstract

Lima jenis kayu yang berasal dari Sukabumi, Jawa Barat, yaitu ki hantap (Sterculia oblongata R.Br.), ki kuya (Ficus vasculosa Wall.ex Miq.), ki lubang (Calophyllum grandiflorum JJS.), ki bancet (Turpinia sphaerocarpa Hassk.) dan ki bulu (Girroniera subaequalis Planch.), diuji sifat pengkaratannya terhadap sekrup logam menggunakan metode jam-pot. Contoh uji diambil dari bagian tepi (A), tengah (B), dan dalam (C) dari dua pohon yang berbeda. Hasilnya menunjukkan bahwa pengkaratan logam terjadi pada semua jenis kayu yang diuji. Tingkat pengkaratannya ditunjukkan dengan besarnya kehilangan berat sekrup yang bervariasi. Sifat korosif logam yang besar umumnya terjadi pada kayu ki bulu dan ki kuya. Kehilangan berat sekrup tertinggi didapatkan pada kayu ki bulu yang berasal dari pohon II bagian dalam (C) yaitu 25,68%, kemudian pada kayu ki kuya dari pohon I bagian tepi (A) yaitu 22,54%. Sedangkan kehilangan berat sekrup terendah terjadi pada kayu ki bancet pohon I bagian tengah (B) yaitu 0.41%.

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