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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu dan Teknologi Kayu Tropis PERENNIAL
Abigael Kabe
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science

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Ciri Finir Kupas Kayu Jabon (Anthocephalus cadamba) Abigael Kabe; Wayan Darmawan; Muh. Yusram Massijaya
Jurnal Ilmu Pertanian Indonesia Vol. 18 No. 3 (2013): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.779 KB)

Abstract

Fast growing jabon is largely rotary-cut to produce veneer for plywood, com-ply, and LVL. In order to provide better information on veneer production and utilization, in this study the effects of wood juvenility and veneer thickness on lathe checks of jabon rotary-cut veneer were evaluated. Before veneer manufacturing, the jabon log was boiled at 50 and 75 °C for 4 and 8 hours respectively. The boiled logs were peeled to produce veneer of 1 and 2 mm thick. Lathe checks of veneers were measured under an optical video microscope. The rotary-cut veneer was grouped and evaluated separately at every segmented ring of 1 cm from pith to bark. The results showed that wood juvenility and veneer thickness had an important effect on lathe checks for the rotary-cut veneer. In general, the number of lathe check of the veneer increases with increasing veneer thickness and increase from pith to bark. Boiling of logs before rotary-cutting could decrease the value of lathe check. The results indicated that boiling of logs at 50 °C for 8 hours, and at 75 °C for 4 and 8 hours could minimize the number of lathe checks in manufacturing of 1 and 2 mm rotary-cut veneer from juvenile wood jabon.
KUALITAS DAMAR POHON POOTI (HOPEA GREGARIA) BERDASARKAN UJI VISUAL, BILANGAN ASAM, DAN KADAR ABU: Quality of Pooti Dammar Resin (Hopea gregaria) Based on Visual Test, Acid Number, and Ash Content Zakiah Uslinawaty; Nurhayati Hadjar; Niken Pujirahayu; Nurmaningsih Hamzah; Abigael Kabe; Anggi Nurhafidzah
PERENNIAL Vol. 17 No. 1 (2021): Vol. 17 No. 1, April 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i1.12646

Abstract

Pooti (Hopea gregaria) is an endemic plant in Southeast Sulawesi that produces resin. But until now it has not been used because information about the quality of pooti resin has never been available. Therefore, this study aims to test the quality of pooti resin based on visual, acid number and ash content test. Pooti sap taken is on a tree with a diameter of 30 cm and a visual test is carried out based on SNI 2900-1-2012 and SNI 2900.2: 2013 for laboratory tests. The result is pooti resin with a clear yellowish color with a chunk size> 3x3 cm2, based on SNI 2900-1-2012 classified as Quality Class A. While the ash content value is 0.7% and the acid number is 29. This value indicates the ash content and acid number based on Laboratory tests are classified as quality class II based on SNI 2900.2: 2013.
Characteristics of Sengon Rotary-Cut Veneer Abigael Kabe; Wayan Darmawan; Muhammad Y Massijaya
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (623.052 KB) | DOI: 10.51850/jitkt.v10i2.113

Abstract

Fast growing sengon is largely rotary-cut to produce veneer for plywood, com-ply and LVL. In order to provide better information on veneer production and utilization, in this study the effects of wood juvenility and veneer thickness on lathe checks of sengon rotary-cut veneer were evaluated. Before veneer manufacturing, the sengon log was boiled at 50 and 75 oC for 4 and 8 h, respectively. The boiled logs were peeled to produce veneer of 1 and 2 mm in thickness. Lathe checks of veneers were measured under an optical video microscope. The rotary-cut veneer was grouped and evaluated separately at every segmented ring of 2 cm from pith to bark. The results showed that wood juvenility and veneer thickness had an important effect on lathe checks for the rotary-cut veneer. In general, the number of lathe check of the veneer increases with increasing veneer thickness and increase from pith to bark. Boiling of logs before rotary-cutting could decrease the value of lathe check. The results indicated that boiling of logs at 50 oC for 8 h, and at 75 oC for 4 and 8 h could minimize the number of lathe checks in manufacturing of 1 and 2 mm rotary-cut veneer from juvenile wood sengon.Key words: juvenility, lathe check, Paraserianthes falcataria, rotary-cut veneer, veneer thickness
Co-Authors Anggi Nurhafidzah I Wayan Darmawan Muh. Yusram Massijaya Muhammad Y Massijaya Niken Pujirahayu Nurhayati Hadjar Nurmaningsih Hamzah Zakiah Uslinawaty