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Search results for , issue "Vol 13, No 2 (1995): Jurnal Penelitian Hasil Hutan" : 5 Documents clear
DAYA TAHAN ALAMI 30 JENIS KAYU TERHADAP RA YAP TANAH Macrotermes gilvus (Hagen); SUATU UJI LAPANG YANG DIPERCEPAT Sukartana, Paimin
Jurnal Penelitian Hasil Hutan Vol 13, No 2 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3010.863 KB) | DOI: 10.20886/jphh.1995.13.2.71–76

Abstract

Two bundles  of  wood  samples  consisting  of  each thirty  wood  species  were  exposed  to subterranean termite Macrotermes  gilvus   (Hagen) for 14 weeks (3.5 months) in a rural area of Cikampek and in  an arboretum  of the  Centre for  Forest  and Natural  Conservation Research and Development located in  Janlapa,  Bogor.  To accelerate the termite attack,  a piece  of corru- gated paper  was inserted in each layer of wood arrangements in the bundles. in Cikampek, the wood samples were directly exposed to an active colony of the termite species.  Meanwhile, in  Jalanpa such test method was not conducted because the experiment formerly was not designated to this termite   species.  Thus,  the attack by  this termite species  was probably  occured by chance only.the  result of the experiment showed that, excepl the damage degree,  there was no significant difference in the pauern  of termite attack between the test samples exposed in the two locations. Here,  most stake tests exposed in Cikampek   were more severely infested than those in Jalanpa. From the two test sites,   it can be concluded that aboui 37%   (Aglaia versteeghii ,   Hopea odorata, Khaya  anthothcca,   Mimusop   elingi,   Neonauclea   spec,   Planchonia   valida,  Quercus  turbinata, Eucalyptus  urophylla,   Eugenia  lincata,   E.   polyantha,   and Podocarpus  blumei,  13%   (Altingia excelsa, Castanopsis javanica,  Shorea seminis,  Swintonia glauca),  20%  (Calophyllum inophyllum, Dacrydium becarii,  Gluta walichii,  Heritiera javanica,  Peronema canescens,  and Shorea platy- clados),   23   %   (Agathis philippinensis,  Anthocephalus  cadamba,  Anthocephalus spec.,   Eucalyptus alba,   Gluta renghas,   G,   rostrata,  Shorea  meristopteryx.),   and  7  %  (Elaeocarpus  sphaericus; Laplacea subintegerrima)  might be respectively classified highly resistant, resistant,  moderately resistant,  less resistant,  and perishable  to the termite attack.
SIFAT PAPAN WOL KAYU DARI 8 JENIS KAYU MALUKU UTARA Sulastiningsih, I M; Sutigno, Paribotro; Iskandar, M l
Jurnal Penelitian Hasil Hutan Vol 13, No 2 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4540.253 KB) | DOI: 10.20886/jphh.1995.13.2.77-86

Abstract

The result of  laboratory  test of wood-wool board properties  manufactured from 8 individual wood species  obtained from  North Maluku  are  reported  in this paper.   The  tests  comprising board density,  moisture  content,   thickness  reduction  due  to  compression,   and bending  strength.The study  reveals that  the  average yield  of wood-wool  is  492. 75 kg/m3  of log  input.   The wood-wool  of  Parinari   corymbosa,   Shorea    koordersii,    Hopea   sp.   and  Horsfieldia        sylvestris  must  be  soaked   in  cold  water  for 24 hours prior  to  wood-wool board manufacture,      while the otherfour  species  do not  require   the soaking.  The physical  and mechanical  properties   of wood- wool board from  seven  wood species  mineralized   with Ca CJ 2  are in comformity with  the DIN 1 101   standard.    Only six  wood species,   however,    mineralized    with Ca(OH)2 suspension   meet  the  standard  requirement.     The  identical  commercial   name of wood not  necessarily  produce  a comparable  quality  board.   Apart  from  the  species,   growth  and  environmental   factors   are believed  to contributing  to board properties.
ISOLASI DAN PENCIRIAN LIGNIN DARI LINDI HITAM DAN SENGON UNTUK BAHAN PEREKAT Santoso, Adi; Ruhendi, Surdiding; Achmadi, Suminar S; Suhendang, Endang
Jurnal Penelitian Hasil Hutan Vol 13, No 2 (1995): 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.1995.13.2.60-70

Abstract

Lignin   is  the  polymer   which   has  been   degraded    and  removed    in pulping  processes.     The occurance   of lignin  as  a waste  product   in pulp  mills  has  made   it an  attractive   raw  material  for adhesives    eversince    the  beginning   of  the  sulfite  pulping   of  wood.   Therefore,    the  isolation   and its  characterization   are   important  lo  achieve    effective    lignin   removal.    In  this   investigation,  isolation   and  characterization   of black  liquor  and  sengon   lignin  were  carried  out.  the  isolation of  lignin   was   performed   by  precipitation   of  lignin   from  black   liquor   and  the  preparation   of  lignin   by way  of  cellulose   dissolution   from   sengon   (Paraserianthes    falcataria  (L) Nielsen).  the  recovery   of  lignin  was  evaluated   in  an  allempt  to  optimize  recovery    at  high  purity   by  qualitative  analyses   (ie.   UV - and  IR - spectrometry)   and  quantitative  analyses   (ie.  percentage   of pure  lignin, equivalent    weight,    ash   content,    etc).    lndulin-AT     (commercial   lignin) is  used   as   standard   of comparison.the  result   indicates   that  black   liquor   lignin   is  guayacil    lignin  with  16,8   -  17,4%   methoxyl  content,    2.0   - 2.1  %  phenolic    hydroxyl  content,    11.  7 -  11.9%     ash  content   and  percentage    of pure   lignin  about   64. 2  -  71.1   %.  this   result   is similar  with  indulin   - AT.    the   result  of sengon lignin  analyses show   that  it is syringyl   lignin  with  26.7  - 27.2%   methoxyl   content,    0.8  -  0.9% phenolic   hidroxyl   content,    25.1   - 25. 6%  ash  content  and  percentage    of pure   lignin  about  36. 1 -46.2%.   Side  effect of  these  result  were  reactivity  of sengon   lignin  is  lower  than  lignin from   black liquor and indulin - AT,  therefore,   sengon  lignin has no potential  as raw material for adhesives.
PENGARUH JENlS PELARUT ORGANIK DAN UMUR DAUN PINUS TERHADAP RENDEMEN LILIN Wiyono, Bambang
Jurnal Penelitian Hasil Hutan Vol 13, No 2 (1995): 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.1995.13.2.52-59

Abstract

The  objective    of  this  research   is  to  study    the  effect  of  organic   solvents    and  pine   needles age  on  wax   yields.   The  organic   solvents   used  in  extracting  wax consisted  of  chloroform,    n hexane  and   ethanol; however,  the  radiate  pine   needles'     age   used   as  raw   materials  for  the   action were  primary   pine   needles  (one  year   old  or  less),   secondary   pine   needles   (two   o tu,   e years   old),  and  mixtare  of  both.  the  data   were  analysed  with  an A  x  B factorial  design  where   A   represented   organic  solvents    and   B  depicted   pine  needles'   age.    the   differenc  between   means  of wax   yields   was  calculated   with  an  LSD   method   in  the    SAS   compute packages.Results   showed   that  organic   solvents,   pine   needles'   age  and  the  interaction   of both   gave  ,high fr  significance  on  wax  yields.    Compared    lo  the   other   combinations,    a  combination    of. chtorofonn    solvent   and  secondary    pine   needles   produced   the  highest   of  wax  yield.   A  wax yiet. obtained   by  extracting   secondary   pine   needles   was  statistically     similar lo   a wax yield  obtaine, frotn  a mixture   of  both   primary    and  secondary    pine   needles.    A  chloroform  solvent   is  a  goo. solvent   to  extract   pine  needle   waxes  from  any  kind  of pine   species.
PROSPEK PENGEMBANGAN TANANAMAN LANGKA DITINJAU DARI SIFAT ARANG DAN ASPEK LAINNYA Komarayati, Sri
Jurnal Penelitian Hasil Hutan Vol 13, No 2 (1995): 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.1995.13.2.45-51

Abstract

Jackfruit (Artocarpus heterophyllus Lamk) is a multi purpose tree species. An analysis showed that Jackfruit wood contains cellulose content 56. 74%, lignin content 28.76%, pentosan content 18.64%, yield of charcoal 38.74 %, calorific value of charcoal 7108.37 cal/g and charcoal briquette has moisture content 5.10%, ash content 3.06%, volatile matter 25.51%, fixed carbon 71.23%, density 0.63 g/cm3, compression strength 350 kg/cm2 and calorific value 6487. 28 cal/g.Further study showed that Jackfruit leaf has moisture content 14.50%, ash content 5.24%, silica 3.60% , cellulose 38.83%, lignin 24.18% and pentosan 4.56%. This leaves is suitables for cattle fodder.Based on the analysis, Jackfruit wood is suitable for energy sources. Besides that Jackfruit plant can be used for export comodity, source of income and as intercropping plant which caused increasing of growth percentage of main plant upper than 85% and can increase 15 -20% of income of forest farmer (tumpang sari participant).

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