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All Journal Jurnal Sylva Lestari Jurnal Ilmu-Ilmu Kehutanan Jurnal Ilmu Kehutanan Jurnal Penelitian Hasil Hutan
Hamidi, Zikri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Materials Science & Nanotechnology

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Physical and Mechanical Properties of Glulam from Sengon and Red Meranti Wood Hamidi, Zikri
JURNAL ILMU-ILMU KEHUTANAN Vol 8, No 2 (2024)
Publisher : Fakultas Pertanian, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jiik.8.2.70-76

Abstract

The high production of sawn timber has increased the demand for wood each year. This has created an imbalance between the growing demand for wood and the declining supply of wood from natural forests. To address this issue, innovations in wood engineering are necessary to meet future wood demand. One solution is to utilize wood to produce Glued Laminated Timber (glulam). This research uses sengon and red meranti wood, forming three models: Model A, Model B, and Model C, with sizes of 120 x 5 x 1 cm and 120 x 3 x 1 cm. The objective of this study on glulam from sengon and red meranti wood is to determine the characteristics of its physical and mechanical properties. The highest density for physical properties is produced by Model B glulam, which is 0.579 g/cm³, the highest moisture content is produced by Model C glulam, which is 14.43%, delamination in cold water ranges from 12.08% to 32.08%, and in boiling water ranges from 22.25% to 44.63%. The highest MOE and MOR tests are shown by Model B and Model A. The results obtained for the MOE of Model B are 10,960.194 MPa and the MOR of Model A is 74.677 MPa.Key words: Glulam, Red Meranti Wood, Sengon Wood
RENDEMEN DAN KUALITAS MINYAK ATSIRI PUCUK MERAH DENGAN METODE PENYULINGAN UAP Hamidi, Zikri; Sribudiani, Evi; Pramana, Angga
Jurnal Penelitian Hasil Hutan Vol. 42 No. 2 (2024): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jphh.2024.4503

Abstract

Pucuk merah (Syzygium myrtifolium) merupakan tanaman mempunyai multifungsi yang dapat dijadikan sebagai tanaman hias juga mempunyai potensi kandungan minyak atsiri. Tujuan dari penelitian ini adalah menentukan hasil dan kualitas minyak esensial dari penyimpanan lama daun dan ranting pucuk merah (Syzygium myrtifolium) yang telah diproduksi, mengetahui kualitas minyak esensial dari penyimpanan lama daun dan ranting pucuk merah (Syzygium myrtifolium) yang telah diproduksi. Metode penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 2 perlakuan. Analisis observasional yaitu hasil minyak esensial dan kualitas minyak esensial berdasarkan uji bau, uji warna, dan kelarutan dalam etanol. Hasil Penelitian rendemen dari minyak esensial dari daun dan ranting pucuk merah (Syzygium myrtifolium) yang dihasilkan berkisar antara 0,0078% hingga 0,0228%. Pengujian kualitas minyak esensial berdasarkan uji bau, uji warna, dan kelarutan dalam etanol dari 12 perlakuan dilakukan berdasarkan SNI yang terkait dengan cengkih.
Retracted: Chemical Compound Analysis of Syzygium myrtifolium Essential Oil and Molecular Docking Analysis on Phenylalanine Hydroxylase Enzyme Hamidi, Zikri
Jurnal Ilmu Kehutanan Vol 19 No 1 (2025): March
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v19i1.19038

Abstract

Essential oil from the red shoot plant (Syzygium myrtifolium) had high potential as a non-timber forest product. Therefore, this research aimed to evaluate the effect of leaves storage duration on oil yield, essential oil quality, and compliance with the Indonesian National Standard (SNI) 06-237-2006 for clove leaf oil. This research performed steam distillation to produce essential oil from fresh leaves, leaves stored for 24 hours, and leaves stored for 48 hours. The results showed that the highest essential oil yield was obtained from the 24-hour stored leaves at 0.204%, in line with the SNI 06-237-2006. The Gas Chromatography-Mass Spectrometry (GC-MS) analysis showed that the main compounds in the product were beta-pinene (39.09%) and caryophyllene (23.74%). Based on the in silico results from molecular docking, there was a strong interaction between the essential oil compounds and the enzyme phenylalanine hydroxylase. In addition, humulene, ledene, and caryophyllene exhibited the highest binding affinities due to the molecular stability of the enzyme at residues Phe A:254 and Tyr A:325. The current research opened opportunities for developing essential oil-based products for health applications.
Antidiabetic Activities of Agarwood (Aquilaria malaccensis) Leaf Extracts via Enhanced Insulin Secretion in BRIN-BD11 Pancreatic Beta-Cells Prayogo, Yanico Hadi; Sari, Rita Kartika; Hamidi, Zikri; Syafii, Wasrin; Harlina, Eva; Prasetyo, Bayu Febram
Jurnal Sylva Lestari Vol. 13 No. 3 (2025): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i3.1197

Abstract

Agarwood leaves (Aquilaria malaccensis), a non-timber forest products, shows significant potential as a source of antidiabetic compounds. This study aims to evaluate the antidiabetic activity of agarwood leaves and their cytotoxicity on pancreatic beta-cells, as well as predict their compound bioactivity through an in silico approach. The leaves were extracted using ethanol, water, and a mixture of ethanol–water with the assistance of ultrasound irradiation. The extracts were then tested in vitro for their antidiabetic potential by assessing their ability to inhibit the alpha-glucosidase enzyme and their effect on insulin secretion, as well as their cytotoxicity on BRIN-BD11 pancreatic beta-cells. The phytocompounds in the extract were identified using liquid chromatography-mass spectrometry, and their binding behavior was studied by in silico molecular docking. Among the three, the ethanol–water extract showed the highest extraction yield. Cytotoxicity assays revealed that the ethanol–water extract was cytotoxic at high concentrations (1000 µg/mL), but safe at lower concentrations. The alpha-glucosidase inhibition was relatively weak. Nevertheless, the extracts significantly stimulated insulin secretion in BRIN-BD11 cells up to fivefold compared to untreated cells. In silico studies indicated that xanthone glycoside, flavonoid glycoside, and coumarin compounds exhibit strong binding affinities to multiple insulin-secretion-related proteins. These findings suggest that agarwood leaf extract, particularly ethanol–water extract, possesses promising antidiabetic activity through an insulinotropic mechanism. Keywords: agarwood, alpha-glucosidase, insulinotropic, molecular docking
Co-Authors Angga Pramana, Angga Bayu Febram Prasetyo Eva Harlina Evi Sribudiani Prayogo, Yanico Hadi Rita Kartika Sari Wasrin Syafii