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Agus Kholik
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Agriculture, Biological Sciences & Forestry

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Aplikasi Isotop δ13C dan δ18O untuk Lacak Balak Kayu Jati (Tectona grandis Linn.f.) di Jawa Application of Isotopes δ13C and δ18O for Teak Wood (Tectona grandis Linn.f.) Timber Tracking in Java Agus Kholik; Djiono Djiono; Iskandar Z Siregar; Ulfah J Siregar; Lina Karlinasari; Tedi Yunanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 1 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (573.665 KB) | DOI: 10.51850/jitkt.v7i1.237

Abstract

Tracking the origin of Teak timber and its wood product is possible to be carried out using stable isotopes fingerprinting.  To enrich the available variation patterns, Teak woods samples were collected from nine Forest Management Units (FMUs) representing all provinces and Teak centres in Java.  Mills from all part of woods were mixed for analyses.  The mills were burned under vacuum in a reactor system at 1200oC for 2 h, the resulting clean CO2 was transferred to the mass spectrometer to determine its isotopic composition of δ13C and δ18O.  The generated data was then analysed using multivariate analysis.  The results showed that isotopes analysis grouped Teak populations in Java intoWest Java population and mixed Central-East Java population.  To consider wood as material for fingerprinting traded forest product, a refinement on method should be done.
Anatomical Structure and Fiber Quality of Shorea hopeifolia (Heim) Symington Grown from East Kalimantan Supartini Supartini; Listya M Dewi; Agus Kholik; M Muslich
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 1 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (683.208 KB) | DOI: 10.51850/jitkt.v11i1.101

Abstract

The objectives of this research were focused on description of anatomical structure and fiber quality of Shorea hopeifolia. Wood samples were obtained from Labanan, Berau, East Kalimantan. Anatomical structure and fiber quality of S. hopeifolia were observed according to IAWA List and Indonesian fiber quality criteria. The results showed that S. hopeifolia has brown yellowish heartwood and clearly distinguished with its light yellow sapwood; straight to interlocked grain; somewhat rough texture, slippery touchiness, lustered; and soft to somewhat hard. While the main microscopic are growth rings indistinct; vessel diffuse, simple perforation plate, mostly solitary; alternate and vestured intervessel pit; vessel-ray pits with much reduced borders to apparently simple and rounded shape; tyloses and vacicentric tracheid present; fibres with simple to minutely bordered pits, septate fiber present, thin to thick cell-wall fiber; fiber length 1733 μm; axial parenchyma unilateral paratracheal, vacicentric, aliform, confluent, narrow bands; uniseriate and multiseriate rays (3-8), rays height >1 mm; axial intercellular canal in long tangential lines and radial canal present; prismatic crystals in procumbent and upright rays cells. Based on its fiber dimensions and derived values, S. hopeifolia wood was classified into quality class I and very favourable as raw material for pulp and paper.Key words: anatomical structure, fiber quality, Shorea hopeifolia, yellow meranti
Co-Authors Djiono Djiono Iskandar Z Siregar Lina Karlinasari Listya M Dewi M Muslich Supartini Supartini Tedi Yunanto Ulfah Juniarti Siregar