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Jurnal Penelitian Hasil Hutan
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Articles 2 Documents
Search results for , issue " Vol 8, No 1 (1990): Jurnal Penelitian Hasil Hutan" : 2 Documents clear
SIFAT EKSTRAK KULIT ACACIA DECURRENS SEBAGAI INSEKTISIDA (Antitermitic Properties from: Acacia decuerena ,Bark ExtractilHIB) Pari, Gustan
Jurnal Penelitian Hasil Hutan Vol 8, No 1 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1465.255 KB) | DOI: 10.20886/jphh.1990.8.1.17-19

Abstract

creening triala were cond.ucted  to determine.  t~, antitermitic properties. of methanol:dieth.yl ether:ethyl acetate (M:D:E) and acetone:diethylether:ethyl   acetate (A:Dfg)   tannin extract obtained from Acaciadeeurrens bark. The eoa- centration for eaolt>treatmentare 0,10 and0,14  g/ml, and Cryptotennes  cynocephalus Light termite were uaed to evaluate antiter:miticproperties.TM rault  ahowa that complete termite mortality occured on methanol:diethyt ether:ethyl acetate. Nearly Complete mortality occurred on acetone:diethyl:ethyl  ether:ethyl acetate and the filtrat from each  soluent is also still toxic.i
ISOLASI LIGNIN DARI LINDI IUTAM (The Isolation of Lignin from Black Liquor) Pari, Gustan
Jurnal Penelitian Hasil Hutan Vol 8, No 1 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2947.844 KB) | DOI: 10.20886/jphh.1990.8.1.25-30

Abstract

At  the present  investigation two  lignins taere prepared for  the comparison of physicochemical properties. One represent«a lignin of)tained by evapomtion and the other represents a lignin isolated by pr­ecipitation.For each treatment, the, lignin products was refluxed  by ethanol, hot  water and unrefluxed.The result shows that the yield of lignin mnges from 21,98­38,21  percent, ash content from 29,31­51.,83 percent, silica content from 15,40­27,71   percent moisture content from 3,19­8,09,   methoxyl  content from 0,91­2,64  percent, pH from  4,01­5,09   phenol content from 2,14­7,52   percent, surface area from 29,0­42,0   m1/gr, lignin content from 67,11­80,16  percent and equivalent weight rangesfrom 2512,54­5277,  78.

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