Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Peronema Forestry Science Journal
Ridwanti Batubara
Staf Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara Jl. Tri Dharma Ujung No. 1 Kampus USU Medan 20155
Agriculture, Biological Sciences & Forestry

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PERUBAHAN KIMIA KAYU PADA GUBAL GAHARU (Aquilaria malaccensis Lamk.)HASIL REKAYASA) (Wood Chemical Changes In Gubal Agarwood (Aquilaria malaccensis Lamk.) Engineered) Chendy Herawati; Ridwanti Batubara; Edi Batara Mulya Siregar
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (345.79 KB)

Abstract

Indonesia is the biggest producer gaharu (A. malaccensis Lamk.) in the world with the best quality. Agarwood is elite commodity non timber forest products that have potential as an industrial raw material The research objective is measuring physical properties (water content and density) of wood tissue is induced to form the agarwood. Measuring changes in the chemical content (hemicellulose, cellulose, alpha cellulose and lignin) of wood tissue induced 12 months, 6 months, and the control of long induced agarwood. Treatment in research was induced period of 6 months, 12 months and control. The analysis was done according to ASTM Standard  D 4933-99 and TAPPI. The result of research showed that the induced agarwood for 12 months had a higher density than the control, and 6 months. while the water content was not significanctly different. The extractive substances that contained in induced agarwood had a higher value than the control (the value of agarwood solubility in cold water, solubility in hot water, solubility in NaOH, solubility in alcohol and benzene). The content of hemicelluloses, cellulose and alpha cellulose in the induced agarwood  for 12 months trend to be lower than the control. Keyword: agarwood, A malaccensis Lamk., physical properties, chemical properties, induced
IDENTIFIKASI FUNGI YANG BERKEMBANG PADA BATANG SAWIT (Elaeis guineensis Jacq.) Pasca Penebangan (Identification of fungi that developed in post-harvest oil palm trunk (Elaeis guineensis Jacq.)) Hisar panjaitan; Ridwanti Batubara; Yunasfi Yunasfi
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (288.864 KB)

Abstract

The research aims to know the kinds of fungi that grow on palm trunk after logging in the process of rejuvnation of palm. The research was conducted in Kebun Percobaan Tambunan A Universitas Sumatra Utara. Fungi isolated and identified in Microbiology Laboratory of the Department of Biology Faculty of Mathematics and Natural Sciences, University of North Sumatra. The research was conducted from September 2011 until November 2011. The results obtained, four types of fungi found on oil palm trunks that have been process of rejuvnation, wich is taken from four palm  as a sample. for each palm trunk, made ​​a division at the base of the trunk, middle, and end of the trunk. From the results of isolation obtained the Arthrinium phaespermum, Chaetomium brasiliense, Penicillium simplicissimum and Ulocladium botrytis as a result of identification from the sample. The type of fungi that most identified from the palm trunk is a type of fungi Arthrinium phaeospermumKey words : Elaeis guineensis Jacq, Fungi, Palm trunks
Co-Authors Chendy Herawati Edi Batara Mulya Siregar Hisar panjaitan Yunasfi, Yunasfi