WOOD RESEARCH Volume 69, Number 1, 2024
RIZKI ARISANDI, AQMAL NUR JIHAD, ALMAAS HUKMA SHABIYYA PALEVA, FAJAR ARIEF KURNIAWAN, GANIS LUKMANDARU, NOOR KHOMSAH KARTIKAWATI, ANTO RIMBAWANTO, SRI SUNARTI, TONI HERAWAN, LILIEK HARYJANTO, ASRI INSIANA PUTRI, FAJAR LESTARI, and ARIF NIRSATMANTO

CHARACTERIZATION OF EXTRACTIVE COMPOSITION IN THE WOOD AND BARK OF CAJUPUTI (MELALEUCA CAJUPUTI SUBSP. CAJUPUTI POWELL.) GROWN IN GUNUNGKIDUL, INDONESIA

The aim of this study was to analyze the extractive composition of the wood and bark of cajuput (M. cajuputi subsp. cajuputi) to consider the end use material according to the characteristics of the its extractives. Results showed that the extractives properties of M. cajuputi, i.e. the contents of n-hexane, methanol, hot water extractives and total phenolic content (TPC), flavonoid content (TFC) and total polysaccharides (TSP) were 0.84 to 1.05%, 1.00 to 1.03% and 1.43 to 1.46%, and 19.2 to 38.7 and 23.2 to 27.3 mg GAE/g dried extract, 11.8 to 16.0 and 7.55 to 14.0 mg QE/g dried extract and 79.3 to 102.8 and 148.8 to 165.9 mg Glu/g dried extract, respectively. Bark had higher extractive levels than wood. In addition, TPC and TSP in the bark were greater than in the wood parts, whereas the reverse trend was found in TFC. The relatively high contents of TPC and TFC in the wood and bark suggest that their potential antioxidant properties. Based on the GC-MS analysis, the high content of sterols-steroids (31.4%) and triterpenoids (21.9%) in the bark part will have potential in the field of pharmacology

WOOD RESEARCH Volume 67, Number 5, 2022
ARIF NIRSATMANTO, SRI SUNARTI, Dwi Kartikaningtyas, Betty Rahma Handayani, Teguh Setyaji, Surip, Sugeng Pudjiono, NOOR KHOMSAH KARTIKAWATI, Teddy Kardiansyah, Krisdianto, Dian Anggraini Indrawan, Rohmah Pari, Mindoro Razoki, Albertus Bambang Herdyantara, Sri Nugroho Marsoem, and Fanny Hidayati

Evaluation of the characteristics of Eucalyptus pellita and acacia hybrid superior clones selected from breeding program in Indonesia as materials for pulp and papermaking

This study evaluates the characteristics of superior clones of Eucalyptus pellita and Acacia hybrid (Acacia mangium × A. auriculiformis) aged six years selected from a breeding program in Indonesia as materials for pulp and papermaking. Height, diameter, and wood density differed significantly between species and among the clones, with respective mean values 21.6 m, 12.57 cm, and 657 kg.m-3 for E. pellita and 19.5 m, 24.83 cm, and 567 kg.m-3 for Acacia hybrid. Most fiber morphologies were significantly different between species. Cellulose and lignin differed significantly only among Acacia hybrid clones. The mean value of screened pulp yield Acacia hybrid (52.50%) was higher than that of E. pellita (50.31%). Kappa number and brightness were significantly different between species and among E. pellita clones. Some correlations of growth and wood properties showed a better relationship to pulp properties. Handsheet properties varied between species, and some clones showed an outstanding one.