The corewood of 25-year-old Hevea brasiliensis from two rubber plantations has high starch content

In Brazil after 25 to 30 years of rubber production, when yield starts drop, trees are felled and destined for firewood charcoal, despite the good mechanical properties workability wood, relatively low production costs. Wood with starch content could be higher added-value products potential spare deforestation many native forest species, but in rubberwood, increases palatability by wood borers accelerates fungal degradation, thus compromising durability quality timber. The aim this study is determine whether removal outer part or varying season logging would result lower content. We measured using enzymatic hydrolysis, radial distribution grains light microscopy, corresponding seasonal variation 25-year-old trees. Rubberwood had large amount its entire trunk, increasing from inner region, before decreasing outermost sapwood. Starch was summer, although than other timber species. After relating data a comprehensive bibliographic survey quantification it concluded that there no technological arguments destine tree trunks value products.