Garuda - Garba Rujukan Digital

Ratih Damayanti

Unknown Affiliation

Author-ID : 3654305

Agriculture, Biological Sciences & Forestry

Published : 3 Documents Claim Missing Document

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Articles

The Pretreatment Effect of Single Culture White Rot Fungi on the Anatomical Structure of Betung Bamboo Widya Fatriasari; Ratih Damayanti; Sita H Anita
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 1 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study was to investigate the changes of morphological, macroscopic and microscopic characteristic on betung bamboo fiber during single culture of white rot fungi pretreatment. Fresh, and bark less 2 years old betung bamboo (Dendrocalamus asper) chips, 1.6 cm in length were inoculated by 10% of white-rot fungi inoculums stock for 30 and 45 days in room temperature. This study used three kinds of fungi i.e Trametes versicolor, Pleurotus ostreatus and Phanerochaete chrysosporium. After the incubation period was finished the chips were separated by maceration process (Schutze method) to analyze the fiber dimension and its derived value. The fibers were then observed the macroscopic and microscopic structure by optical microscope. The pretreatment caused the decreasing of fiber length, cell wall thicknesses, while the lumen and fiber diameter were since in versa. The improvement on fiber derived value except muhlsteph ratio was found in this study. Bamboo pretreated by T. versicolor for 30 days showed the best fiber dimension and fiber derived value and the treated bamboos were predicted to produce pulp with superior grade quality (grade I).Key words: bamboo structure, betung bamboo, fiber dimension, white rot fungi

Paleobotani: Dryobalanoxylon, Fosil Kayu Asal Jambi (Paleobotany: Dryobalanoxylon, Fossil Wood Origin Jambi) Andianto Andianto; Agus Ismanto; Ratih Damayanti
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Jambi Province is known as an area with abundant source of geological diversity (Geodeversity), including fossil woods. Specimen of Fossil wood from Merangin District-Jambi was observation its anatomical structures on thin slices of cross, radial and tangential-section using Carl Zeiss-Axio Imager A1m microscope. The description of wood anatomical structures referred to the International Association of Wood Anatomists (IAWA) list of microscopic features for hardwood identification. The age estimate of fossil wood is based on geological map (scale 1: 100.000) of Sarolangun sheet, Sumatra. The anatomical structures of the fossil wood are as follow: vessel exclusively solitary, simple perforation plates, intervessel pits alternate, very thick fibre wall, apotracheal parenchyma diffuse-in-aggregates, paratracheal parenchyma vasicentric, axial canals in long tangential lines, prismatic crystal in chambered axial parenchyma cells, and silica bodies present in ray cells and axial parenchyma cells. The anatomical structures mentioned are similar to Kamper/Kapur wood species (Dryobalanops sp.) which it is member of Dipterocarpaceae family, with the result that this fossil is Kamper wood (Dryobalanoxylon sp.). Based on age analysis through the geological map, it is estimated that this fossil wood was formed between 3.60 and 2.58 million BP (Before Present), which was between the late Pliocene and the early Plistocene era.

Anatomical Structure of Surian Wood (Toona sinensis Roem) Atmawi Darwis; Imam Wahyudi; Ratih Damayanti
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Surian wood (Toona sinensis Roem) is one species of wood that is easily found in Indonesia, especially in West Java. The purpose of this study was to descriptively and quantitatively observe the anatomical structure of surian wood. The wood was collected from Sumedang regency, West Java. The results showed that this wood had oval to round shaped vessels and some of them contain a reddish brown liquid that causes a characteristic odor due to axial intersellular canals. The vessels were mostly solitary and arranged to follow the pattern of the porous ring. There were septate fibers indicated. Axial parenchyma cells were included in the category of paratracheal vasisentrik and marginal bands in the early wood. The ray composition consists of upright and procumbent cells. In the ray cell, there are prismatic crystals in rhomboidal or octahedral shape. Based on the dimensions of fibers, this wood has first-class fiber quality for pulp and paper.Key words: anatomical structure, fiber dimension, fiber quality, Toona sinensis

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