Chemical analysis of twenty seven wood species from West Java (Indonesia)
1987
Purba, K. | Sumarna, E.
Chemical analysis of wood species from different islands of Indonesia has been started by several workers. Most of the species studied were obtained from East Kalimantan, South Kalimantan, Central Kalimantan, East Java and South Sumatra. The analysis comprised of determination of cellulose, lignin, pentosan, ash, extractives and solubility in one percent of sodium hydroxide. These analysis were conducted to determine their basic characteristics and ultimate uses of wood. In this report results of chemical analysis of 27 wood species from West Java are presented as a supplementing reference to the previous ones. The analysis reveal that the cellulose content ranges from 40.99-55.54 percent, pentosan from 12.49-19.54 percent and lignin from 17.20-28.86 percent. The ash and silica content vary considerably from 0.19-1.43 percent and from 0.05-0.79 percent respectively. The solubility in cold water varies from 0.11-7.20 percent, in hot water from 2.18-10.44 percent, in alcohol benzene (1:2) from 0.54-8.70 percent, and in one percent sodium hydroxide solution from 11.01-37.94 percent.
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