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All Journal Infotech Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) JSiI (Jurnal Sistem Informasi) Jurnal Pengembangan Riset dan Observasi Teknik Informatika YUSTISI Yustisi: Jurnal Hukum dan Hukum Islam GOVERNANCE: Jurnal Ilmiah Kajian Politik Lokal dan Pembangunan Al Jahiz: Journal of Biology Education Research Journal of Management Studies and Development Jurnal Ekonomika dan Bisnis Jurnal Manajemen, Pendidikan dan Pemikiran Islam Jurnal Penelitian Hasil Hutan Jurnal Pendidikan Islam Al Ikhlas
Saefudin
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences Other

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Journal : Jurnal Penelitian Hasil Hutan

 1 
IMPROVEMENT ON SEVERAL PHYSICAL AND MECHANICAL PROPERTIES OF JATI UTAMA NUSANTARA WOOD BY THERMAL COMPRESSION TREATMENT Efrida Basri; Saefudin
Jurnal Penelitian Hasil Hutan Vol. 39 No. 3 (2021): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2021.39.3.121-128

Abstract

Jati Utama Nusantara (JUN) is one type of growing regime of fast grown teak (Tectona grandis Linn. F) derivedfrom Jati Plus Perhutani (JPP). JUN trees have fewer branches and a more cylindrical-shaped trunk, as well asexhibit rapid growth compared to the teak cultivated from seed (conventional); accordingly, they can beharvested in a shorter time. Despite its fast growth, some studies showed that the wood had not met the SNI01-0608 standard as raw material for furniture. The research aimed to improve several physical and mechanicalproperties of young JUN wood through thermal compression treatment. The test sample for 5-year-old JUNwood was prepared with a size of 2.5 cm (thickness/radial) by 10 cm (width/tangential) by 30 cm(length/longitudinal), then compressed using a 25 kg/cm2-pressure for 40 minutes in three temperaturetreatments of 170°C, 180°C, and 190°C. Testing of wood mechanical and physical properties referred to ASTMD143. The wood crystallinity was observed using an X-Ray Diffractometer (XRD), and the wood surface wasobserved visually. Wood cell structure as supporting data was observed using a stereo-capable microscope(Zeiss). The results revealed that the thermal compression could improve the physical and mechanicalproperties of the densified JUN samples compared to the nonthermally compressed samples. Based on datasimulation, the wood samples' best physical and mechanical properties occurred at approximately 185°C's heatpress.
POTENSI ANTIOKSIDAN DAN SIFAT SITOTOKSIS EKSTRAK KULIT KAYU SEMBILAN JENIS TUMBUHAN DARI TAMAN NASIONAL LORE LINDU Saefudin; Efrida Basri
Jurnal Penelitian Hasil Hutan Vol. 34 No. 2 (2016): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2016.34.2.137-145

Abstract

Bark extracts of nine plant species from Lore Lindu National Park (NP) had been studied for the antioxidant potential and their cytotoxic effects. The antioxidant activity was tested by determining the peroxidevalue (POV) using the iodometric method. The toxicity test was done by counting the death of shrimp larva (Artemia salina) using Brine Schrimp Lethality Test (BSLT) method. The test results showed three bioactive components (saponin, flavonoid, and polyphenol) were mostly obtained fromthe 3 plant species that have low POV, namely Dysoxylum gaudichaudianum, Gardenia augusta, and Nauclea orientalis. The most striking of cytotoxic effects (LC50< 200 μg/ml) were found from Koordersiodendron pinnatum (170.86 μg/ml), Nauclea orientalis (182.89 μg/ml), and Kleinhovia hospita (191.35 μg/ml) extracts.
AKTIVITAS ANTIOKSIDAN PADA ENAM JENIS TUMBUHAN STERCULIACEAE Saefudin; Sofnie Marusin; Chairul
Jurnal Penelitian Hasil Hutan Vol. 31 No. 2 (2013): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2013.31.2.103-109

Abstract

Plants of Sterculiascas buve long been and at traditional medicines. Nine extracts of leaf, bark, and nuts of six Sterculiacnat species were evulnated for their antincidunt activity. Antioxidant activities were determined in vitro by free radical scavenging assay atay using 2.2-diphenyl-1-picrylhydrazyl (DPPH) radical Asorbic acid was wond at control. Among the 9 methanel otrasti testid, & showed antiradical DPPH attisties more than 50%, though still lower than the auerbic acid. Material extracted from bark showed the bigbest activity, in which the extract of Prerospermum javanicum's burk proudnod the highest antccidant activity (92.02), Plytubemical screening on three antacidant compted an arcation intees the high antecidant activities and the polyphenol compounds contained of the plant. Parts of plants that contain medio to many polyphenols, generally bare antisocidant actly abate 80 %.
Co-Authors Abdul Hopid Anafih, Erwinda Sam Anharudin Anshori, Muhammad Amir Arbianti, Siska Bambang Supriatno Chairul Efrida Basri Hasni Dyah Kurniawati Amin Wahyudi, Hasni Dyah Kurniawati hastika, asyah dwi HERU SISWANTO Idris Abas Imfrianti Augtiah Islamiati, Diah Juniarti, Mia Angriana Khanifah, Milatul Mario Jufri Michael Chalisto Simbolon Mr Amprasto Muhammad Fauzi Muhammad Hatta Minulyo Muhammad Raja Miftah Hidayatullah Muhammad Yusuf Ariyadi Nafis, Fairuza Nurdian, Dine Rizkialja, Aeka Ilham Rohman, Muhammad Amin Fatkur Sofnie Marusin Sulaiman Kurdi Susandi, Diki Yanti Yuliana Saryip Wijayanti