Title
Chemical and kraft pulp properties of culms from three bamboo species naturally growing in Lombok Island, Indonesia
Authors
DWI SUKMA RINI, IKUMI NEZU, AGUS NGADIANTO, DENNY IRAWATI, JYUNICHI OHSHIMA, SHINSO YOKOTA and FUTOSHI ISHIGURI

Received May 21, 2025
Published Volume 59 Issue 5-6 May-June
Keywords Bambusa vulgaris, Bambusa maculata, Gigantochloa atter, chemical components, kraft pulp

Abstract
Chemical and kraft pulp properties of culm were investigated in three bamboo species (Bambusa vulgaris, Bambusa maculata and Gigantochloa atter) naturally grown in four different provenances of Lombok Island, Indonesia. The among-provenance variations of these characteristics were also evaluated. The amounts of chemical components (extractives, ash, Klason lignin, holocellulose, and α-, β- and γ-cellulose) in these three species were in the range of those values in the same genus. Kraft pulp yield and kappa number ranged from 49.0 to 52.3% and from 18.7 to 22.3, respectively. Variance components of the provenance in mixed-effect models were large in several chemical components, suggesting that these properties vary among provenances due to differences in their genetic backgrounds. Thus, provenance selections should be conducted to effectively utilize bamboo culms for chemical products.