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Articles 6 Documents
Search results for , issue "Vol 4, No 1 (1987): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
PENGARUH PENGGORENGAN DAN CARA PENGERINGAN TERHADAP SIFAT ROTAN BALUKBUK (CALAMUS BURCKIANUS) DAN ROTAN SEUTI (CALAMUS ORNATUS) Basri, Efrida; Karnasudirdja, Suparman
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4756.743 KB) | DOI: 10.20886/jphh.1987.4.1.17-21

Abstract

This paper presents the result of laboratory drying tests on 1wo rattan species. The samples from each species were devided into two groups. The first group was fried in kerosene before  drying,  and the second was left unfried.   Each group  was then subjected  to two drying conditions, namely drying  under roof  (in-door)  and  out-door. The  test were  terminated  when  the samples  reached equilibrium  moisture content, i.e . approximately 16%.  The result of evaluation  rattan qualitv  based on colour  is presented  together  with their drying speed. It shows that  both balukbuk  and seuti rattans when fried in kerosene dry faster than  when untried. However,   frying seems to  produce  darker colour after drving.
ISOLASI OLEORESIN DARI KULIT KAYU MANIS DENGAN PROSES PERKOLASI Ando, Jacob
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3237.886 KB) | DOI: 10.20886/jphh.1987.4.1.22-25

Abstract

The result of oleoresin from Cassia vera bark by percolation process is presented in this report. The analyses comprise of the determination of oleoresin yield, essential oil and cinnamic aldehyde. The determination based on oven dry weight revealed that oleoresin yield vary from  6.27- 7.48 percent; essential oil content from 8.10-9.92 percent and cinnamic aldehyde content from 39.53-41.59 percent. The optimum yield of oleoresin was produced at temperature of 25°C and with two hours time of percolation process. Temperature and time of percolation process indicated a non significant effect to the cinnamic aldehyde yield.
PERILAKU PENGERINGAN ROTAN MANAU (CALAMUS MANAN MIQ.) DAN ROTAN SEMAMBU (CALAMUS SCIPIONUM LOUR) Basri, Efrida; Karnasudirdja, Suparman
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): 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.1987.4.1.12-16

Abstract

Rattan is one of important minor forest  products in Indonesia.  In fact world supply of this material comes mainly from  this country.  One of the weaknesses of rattan is its susceptibility  to various micro-organism  specifically staining  fungi  and borer insects. The former flourishes when the moisture content of the cane is high. Immediate drying of rattan cane is therefore essential.   Studies on the air drying and dehumidifying of two species of rattan canes have been undertaken,  which include rate of drying and drying performance of the samples. As has been anticipated,  the result shows that drying by dehumidifier is much faster compared  with that of air drying. However,  the quality of the two rattan species (degree of staining,  insect attack,  shrinkage, and colour)  are about  the same. The results also show that air drying rattans produces better gloss compared with that of dehumidifier drying. Other rattan defects  due to drying speed such as shrinkage  or wrinkle,  were not noticeable.
PENGARUH POLA PENGGERGAJIAN DAN SUDUT SAYAT TERHADAP RENDEMEN DAN PRODUKTIVITAS PENGGERGAJIAN KAYU NIBUNG (ONCOSPERMA TIGILLARIUM) Rachman, Osly; Rohadi, Dede
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): 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.1987.4.1.31-34

Abstract

Nibung (Oncosperma  tigillarium) is a member of palm family which has a good potential for  utilization. An experiment to find out the best sawing pattern and hook angle of saw blade for  better recovery and sawing productivity was conducted. Two sawing patterns (live sawing and sawing around)  and two hook  angles (20 and 27 degrees were applied).The results indicated that sawing around pattern produced higher recovery of hard and medium  wood than live sawing as much as 8%, while the 27° of  hook  angle produced higher productivity than 20°  angle as much  as 0.30  m2/min.
SIFAT PEMESINAN 36 JENIS KAYU DARI DAERAH IRIAN JAYA Rachman, Osly; Balfas, Jamal
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): 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.1987.4.1.1-11

Abstract

This article presents test results of the machining properties  of 36 wood species from  Manokwari,  lrian Jaya.  The test method used was the modified  ASTM D-1666 described in Forest Products  Research Institute Report No.160 (1982). In most of the species 25 or more samples  were available for test. All test material was dried to equilibrium Moisture content condition (15 to 18% moisture  content). The machining properties that were investigated were planing, shaping, boring,   mortising, turning and sanding.Some of  the species tested are consistenly better than average in most respects. The species have good machining properties are sehiega.koesigoro, seyam, matoa, kerbai and petian.   Whereas some species, such as fofo, sehiye, wafut, basuoh,  serakka  and  bimiek  are consistently poorer. The others species are good  in some properties  and fair  or poor in others.
PENGAWETAN TIGA JENIS BAMBU DENGAN METODE RENDAMAN DINGIN Barly, Barly; Permadi, Pipin
Jurnal Penelitian Hasil Hutan Vol 4, No 1 (1987): 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.1987.4.1.26-30

Abstract

Cold soaking tests of three bamboo species in Formula 7 preservative  were performed.  Results indicated that cold soaking  in one day with 5%  Formula 7 gives satisfactory  penetration  and retention in the specimens of betung and andong species. The specimens of  tali species gave satisfactory  results when treated in three days.

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