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PERENNIAL
Published by Universitas Hasanuddin
ISSN : 14127784     EISSN : -     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
“PERENNIAL” adalah artikel ilmiah hasil penelitian dan review asli dalam bidang teknologi, pengolahan, dan kebijakan pemanfaatan hasil hutan serta belum pernah dipublikasikan dan tidak sedang dalam proses penelaahan dalam jurnal ilmiah, bulletin, atau bentuk publikasi lainnya. Artikel yang dinyatakan diterima, hak publikasinya menjadi milik penerbit dan penulis tidak dapat mempublikasikan tulisan yang sama dalam jurnal atau bentuk publikasi ilmiah manapun.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol. 17 No. 2 (2021): Vol. 17 No. 2, Oktober 2021" : 5 Documents clear
KARAKTERISTIK PEREKAT DAN PEREKATAN TANIN RESORSINOL FORMALDEHIDA PADA SIREKAT AKASIA (Acacia mangium) dan PULAI (Alstonia scholaris): Adhesion and Adhesive Characteristics of Tannins Resorcinol Formaldehyde on Sirekat Acacia (Acacia mangium) and Pulai (Alstonia scholaris) safni auliarta; Evi Sribudiani; Sonia Somadona
PERENNIAL Vol. 17 No. 2 (2021): Vol. 17 No. 2, Oktober 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i2.12759

Abstract

The composition of the adhesive content of Tannin Resorcinol Formaldehyde (TRF) is considered more environmentally friendly to use when compared to the phenol resorcinol formaldehyde (RPF) adhesive. In this study to test the strength of the adhesive, acacia (Acacia mangium) and pulai (Alstonia scholaris) were used. This study aims to determine: 1. The characteristics and quality of the adhesive composition of eucalyptus bark tannins, resorcinol and formaldehyde based on SNI 6/4567/1998; and 2. The strength of the gluing composition of eucalyptus bark tannins, resorcinol and formaldehyde on acacia and pulai wood syrup based on SNI 6/6049/1999. The research was conducted using a non-factorial Completely Randomized Design (CRD) consisting of 6 treatments of adhesive composition with 5 repetitions, in order to obtain 30 test samples. The data obtained from the research results were analyzed by means of variance using SPSS 20. Furthermore, if the variance results have a significant effect, further analysis will be carried out using Duncan's New Multiple Range Test (DNMRT) at the 5% level. The results of the research that has been carried out, the six different adhesive compositions produce different values ​​in each treatment, except for treatment P1. P1 has the shape and appearance of a jelly-shaped adhesive so that it cannot be tested and applied to acacia and pulai wood glue. Treatments P2 to P6 can be applied and used for testing and bonding. The pH test and gelatinization test of all treatments were included in SNI 6/4567/1998, the P2 viscosity test did not pass SNI 6/4567/1998. The shear bond strength test was carried out to determine the strength of the adhesive referring to SNI 6/6049/1999, the average value of the best wet shear adhesion test in treatment P6 was 7.89 N/mm2 and the highest average value of shear bonding strength dry on P5 treatment of 26,09 N/mm2.
NERACA FISIK PEMANFAATAN AREN DI KABUPATEN SIDRAP SULAWESI SELATAN: Physical Accounts for The Utilization of Sugar Palm in Lombo Village Pituriase District Sidrap Regency, South Sulawesi Makkarennu Makkarennu; S Syahidah; Adelia Caroline; Igawati Alfari; M Misrawati; I Irnasari
PERENNIAL Vol. 17 No. 2 (2021): Vol. 17 No. 2, Oktober 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i2.14695

Abstract

Sugar palm is one of the leading committees widely used by the community as their source of income. The community uses and strives for this palm only relies on palm trees that grow naturally on their land in the forest. One of the constraints on the utilization of palm is the lack of information about the number of initial reserves to the final reserves of the utilization of natural resources. This Research was located in Lombo Village, Pitu Riase Subdistrict, Sidrap Regency, South Sulawesi Province. This study aims to calculate the final supply of raw materials of palm juice and palm sugar based on the number of palm trees owned by farmers. The collected data was done through observation and interviews with farmers involved in the palm sugar business as many as 32 people using census data collection. Data analysis is conducted by calculating initial inventory, addition, depletion (usage), and final supply of palm juice and palm sugar. The results showed that the final reserve amounts of raw materials sap as much as 6,183,799.3 liters. This condition indicates that the final reserves of palm sugar are sufficiently available for this region, with the use of palm juice amounting to 17.2% of the total initial inventory. The addition of stock palm trees can be done by replanting saplings to ensure the continuity of the palm sugar business.
KANDUNGAN BEBERAPA POLUTAN DAN KADAR DEBU PADA DAUN KETAPANG (Terminalia catappa L.) DI KOTA SAMARINDA PROVINSI KALIMANTAN TIMUR: The Pollutant and Dust Contents in the Leaves of Terminalia catappa L. in Samarinda City East Kalimantan Province Yuliara Limbong; Karyati Karyati; Muhammad Syafrudin
PERENNIAL Vol. 17 No. 2 (2021): Vol. 17 No. 2, Oktober 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i2.13965

Abstract

The vegetation has many roles, including the ability to reduce pollutants. Ketapang (Terminalia catappa L.) is a species of tree that is often recommended as a shade plant, because it has many advantages including as a pollutant reducing agent.The purposes of this study were to analyse the content of pollutants (lead (Pb), iron (Fe), and manganese (Mn)), and the dust content of ketapang leaves  and compare that pollutant and dust contents based on three area categories (highway, residential area, and vegetated area) in Samarinda City, East Kalimantan Province. The calculation of the number of vehicles that pass around the study site was carried out using the Traffic Survey application. Dimensional measurements of sample trees included diameter at breast height (DBH), tree height, and percentage of tree canopy. The analysis of pollutant contents was done by using AAS (Atomic Absorption Spectrophotometer) with a wet digestion process. The dust content was calculated using the formula where for the calculation of leaf area using millimeter blocks. The result showed that the highest Pb content (100.00 mg/kg), Fe content (347.00 mg/kg), and Mn content (564.00 mg/kg) were in ketapang leaves in Jalan M. Yamin, Jalan Pahlawan, and Jalan M. Yamin, respectively. The highest and lowest dust content were in ketapang leaves in Jalan Pahlawan (0.00316 g/cm2) and Perumahan Bumi Sempaja (0,00024 g/cm2). Based on the area categories, the highest Pb, Fe, Mn, and dust contents were in ketapang leaves that grow on the highway compared to residential and vegetated area. It can be caused by the large number of vehicles passing and canopy density. Information on the pollutant and dust contents in tree leaves can be taken into consideration in selecting plants in different areas.
AKTIVITAS ANTIOKSIDAN DAN ANTIBAKTERI BAGIAN RANTING DAN BATANG TUMBUHAN KARAMUNTING (Melastoma malabathricum): Antioxidant and Antibacterial Activity of The Twigs and Stem Bark of Karamunting Plants (Melastoma malabathricum) Nur Maulida Sari; Irawan Wijaya Kusuma; Rudianto Amirta; Nur Indriana Fitriah
PERENNIAL Vol. 17 No. 2 (2021): Vol. 17 No. 2, Oktober 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i2.14547

Abstract

East Kalimantan is one of the areas that have the potential for various traditional medicinal plants. Melastoma malabathricum (known locally as karamunting, senduduk) is an invasive plant in the family of Melastomataceae with a potential medicinal plant. This study explored the potential of twigs and stem bark of Karamunting (Melastoma malabathricum) for its antioxidant and antibacterial activity. The twigs and stem bark of Karamunting were macerated to yield ethanolic extract. The phytochemical screening was evaluated by Harborne and Kokate methods. Antioxidant activity was evaluated by DPPH radical scavenging assay. Antibacterial activity was examined using agar well diffusion method against Propionibacterium acnes. The results showed that the ethanol extracts of twigs and stem bark samples display an ability to inhibit DPPH free radical by 82% and 88% at 50 ppm concentration. Antibacterial activity of the twigs and stem bark samples showed potent activity to inhibit the P. acnes growth with 11.3 mm and 11 mm inhibition activity. Based on the results, the twigs and stem bark of M. malabathricum plants display potential as a natural antioxidant and antibacterial agent.
EFEKTIVITAS METODE PENGASAPAN BERBAHAN LIMBAH KAYU JATI (Tectona grandis) TERHADAP KEAWETAN KAYU DAMAR (Agathis sp.): The Effectiveness of Smoking-Method preservatives using Teak (Tectona grandis) Wood Waste to The Durability of Agathis Wood (Agathis sp) Ade Firna; F Fitriaseh; Rika Faradhillah; Dian Sasmita; Andi Sri Rahayu Diza Lestari
PERENNIAL Vol. 17 No. 2 (2021): Vol. 17 No. 2, Oktober 2021
Publisher : Forestry Faculty of Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v17i2.18118

Abstract

This study aimed to analyze the effectiveness of the smoking method using teak (Tectona grandis) wood waste in the agathis (Agathis sp) wood preservation process. The smoking process was done by putting teak wood waste into the combustion chamber and inserting agathis wood into the smoke room. The smoking duration was divided into 6 hours, 9 hours, and 12 hours with a maximum temperature ±70°C. The analysis carried out was an analysis of the chemical compound using GC-MS pyrolysis and testing the termite based on SNI 7207-2014. The results of GC-MS showed that the resin wood treated with smoking contained anti-termite compounds, namely phenolic, phenyl, and acid compounds, with the highest composition of 92.76% obtained from the duration of 12 hours of smoking. The termite test results showed that untreated wood had a higher weight loss and lower termite mortality than smoked wood. Meanwhile, the longer the smoking process, the lower the wood weight loss with the same mortality rate of 100%. It can be concluded that the smoking method using teak wood effectively increases the durability value of agathis against termites Coptotermes curvignathus.

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