Quality of Wood Vinegar Stem Gelam

Gelam(Melaleucasp.)isatidalswampspeciesthatgrowsabundantlyinSouthandCentralKalimantanswampforest. Gelam is one potential species for wooden vinegar production as the technology is available and readily implemented. This paper studies the possible utilization of gelam wood species for wood vinegar. The vinegar was condensed during wood pyrolisisprocessesatthetemperatureof 500°Cfor3hours.Woodvinegarwasyellowreddishincolour,transparantandno floating material. The vinegar specific gravity was 1.008 to 1.058 with the pH of 3.105 to 3.195 and acidity level varies from5.167to12.903%.Thecarbonylandphenolcontentwere11.250to30.390%and2.429to9.231%respectively.Ingeneral,gelamwoodcanproducewoodvinegaranditsqualitymeettheJapanesestandardrequirements.Keywords:Gelam(Melaleucasp.),woodvinegar,quality,Japanesestandard