The aim of this study was to physically, chemically and energetically characterize A. angustifolia branches of different dimensions and to compare them with the values described in literature. Thus, a total of 30 branches from 15 adult native trees were divided into three treatments according to the following base diameters: (S) less than 0.06 m, (M) between 0.06 and 0.10 m; and (L) greater than 0.10 m. A. angustifolia branches of all dimensions presented desirable bioenergetic characteristics with high calorific value, low ash content, volatile material content and adequate fixed carbon. Basic density was 470.18 kg m⁻³, fixed carbon and volatile content showed a significant difference between L and S classes. Ash content was close to 1.0%. Gross calorific value showed an average of 4,743.3 kcal kg⁻¹. In comparison with the data found in the literature, A. angustifolia branches presented superior energetic qualities to several forest species woods traditionally used as bioenergy. The results obtained herein demonstrate the energetic potential of A. angustifolia branches for energy generation and encourage studies on this co-product as a profitable and ecological option as it does not need to cut the tree, and may contribute to species conservation.

本研究的目的是从物理、化学和能量上表征不同尺寸的A. angustifolia分支，并将它们与文献中描述的值进行比较。因此，将15棵成年原生树的30根枝条根据以下基部直径分为三个处理：（S）小于0.06 m，（M）在0.06和0.10 m之间；(L) 大于 0.10 m。A. angustifolia分支的所有尺寸都呈现出理想的生物能量特性，具有高热值、低灰分、挥发性物质含量和充足的固定碳。基本密度为 470.18 kg m ^-3、固定碳和挥发分含量在 L 和 S 类之间表现出显着差异。灰分含量接近1.0%。总热值显示平均为 4,743.3 kcal kg ^-1。与文献中发现的数据相比，A. angustifolia分支表现出优于传统用作生物能源的几种森林树种木材的能量品质。此处获得的结果证明了A. angustifolia分支在能源产生方面的能量潜力，并鼓励将这种副产品作为一种有利可图的生态选择进行研究，因为它不需要砍伐树木，并且可能有助于物种保护。