scholarly journals Analisa Keawetan Kayu Terap (Artocarpus elasticus Reinw) dengan Pengawet Koopers Formula 7 Menggunakan Metode Penguburan

Buletin Loupe ◽  
2021 ◽  
Vol 17 (01) ◽  
pp. 46-50
Author(s):  
Joko Prayitno
Keyword(s):  

Penelitian daya tahan kayu Terap (Artocarpus elasticus Reinw) terhadap serangan hama kayu khususnya dari golongan rayap tanah menggunakan garam pengawet jenis Koopers Formula 7, menggunakan metode graveyard test (uji penguburan) bertujuan untuk mengetahui persentase serangan rayap tanah, self retention bahan pengawet, serta absorbsi bahan pengawet pada kayu Terap. Bahan yang digunakan dalam penelitian ini adalah kayu Terap (A. elasticus Reinw) yang direndam menggunakan bahan pengawet formula 7 Koopers dengan konsentrasi 3%, 5%, dan 7%. Hasil penelitian menunjukkan bahwa perlakuan pengawetan dengan pengawet Koopers Formula 7 pada kayu Terap dapat memberikan nilai retensi, daya serap dan setelah sampel diawetkan kemudian ditimbun di tanah diketahui bahwa nilai persentase serangan jamur pewarna dan pembusuk adalah masing-masing 25%, 15% dan 5%.

2014 ◽  
Vol 6 (2) ◽  
pp. 1
Author(s):  
Saibatul Hamdi

The purpose of this research is to know the mechanical strength of gypsum board by utilizing waste sawn wood. Raw materials used consist of flour, gypsum,wood particles, boraks and kambang (Goniothalamus sp), wood tarap (Artocarpus elasticus REINW) and lua (Ficus glomerata ROXB). Wood particle 40 mesh and 60 mesh, concentrations boraks of 1 and 2 and the percentage particles of gypsum sawn timber is 300, 400 and 500%. The results showed that the average value Modulus of Rufture (MoR) in lua wood ranges from 12.55 – 14,47 kgcm2, wood kambang 25.10-31,11 kgcm2 and wood tarap 19.20- 24,18 kgcm2. As for Modulus of Elasticity (MoE) on the lua 1129,80- 2092,70 kgcm2, wood kambang 2512,37-3971,32 kgcm2 and tarap 2050,63-2691,09 kgcm2. Gypsum board are mechanical properties do not meet quality standards created SNI 03-6434-2000.Keywords: sawdust, lua, kambang, tarap, gypsum, mechanical


2016 ◽  
Vol 11 (8) ◽  
pp. 1934578X1601100
Author(s):  
Faiqah Ramli ◽  
Mawardi Rahmani ◽  
Intan Safinar Ismail ◽  
Mohd Aspollah Sukari ◽  
Mashitoh Abd Rahman ◽  
...  

Detailed phytochemical investigation has been carried out on the bark of Artocarpus elasticus Reinw. ex Blume, which led to the isolation of artonin E (1), a new dihydrobenzoxanthone derivative named elastixanthone (2), cycloartobiloxanthone (3) and artobiloxanthone (4). Structures of these compounds were elucidated on the basis of various spectroscopic (UV, IR, 1D-NMR and 2D-NMR) and MS data. Compounds 1-3 displayed outstanding scavenging activity for 1,1-diphenylpicrylhydrazyl (DPPH) with IC50 values of 11.5, 21.6 and 40.0 μg/mL, respectively. In addition, compounds 1-3 displayed broad spectrum antimicrobial activities against thirteen different bacterial strains when tested using the disc diffusion assay. Cytotoxic screening revealed that artonin E (1) constantly exhibited strong cytotoxic activity against human estrogen receptor (ER+) positive breast cancer (MCF-7) and human estrogen receptor (ER-) negative (MDA-MB 231) cells in comparison with the other two, with IC50 values of 2.6 and 13.5 μg/mL, respectively, without being toxic towards the WRL68 (human normal liver) cell line (IC50 value more than 30 μg/mL). However, the compound was inactive against HepG2 (human liver carcinoma) cancer cells.


2018 ◽  
Vol 17 (3) ◽  
Author(s):  
Purwaningsih Purwaningsih ◽  
Tika D. Atikah

A floristic diversity and vegetation forest structure was carried out on the Mount Payung, Ujung Kulon National Park. The objective was to floristic composition and structure of the forest located at the peninsula of Ujung Kulon, Banten. The study was conducted using the quadrat method by establishing plots of 5000 m2 each at two locations Pasir Ipis and Gunung Keneng, thus the total area sampled was 1 ha. They were Plot Pasir Ipis and Plot Gunung Keneng. A total of 1898 trees comprising 105 species of 74 genera and 43 families were recorded. The number of species at Pasir Ipis higher (90 species) than plot Gn Keneng (61 species). Based on calculation the important value indexes (IVI), there were some dominan species with IVI >10 at Pasir Ipis Neesia altissima (IV=21,55), Barringtonia racemosa (17,89), Payena acuminata (13,35) and Neonauclea lanceolata (12,37). The dominated species at Plot Gn Kendeng were Pseuduvaria reticulata (IV= 34,30), Dillenia excelsa (27,62), Lagerstroemia speciosa (20,89), Popowia pisocarpa (17,57). The structure of forest could be inferred from the diameter and height of trees. The diameter measurements showed that 75,57 % of trees in plot Pasir Ipis and 80,51 % in plot Gunung Kendeng consist of small individuals with diameters between 10-20 cm. Trees with large diameters of >100 cm occurred in two plots among them Barringtonia racemosa, Polyalthia lateriflora, Popowia pisocarpa, Artocarpus elasticus. The presence of large numbers of small trees and lesser numbers of trees with large diameters in a forest stand indicated that the stand was regenerating after heavy disturbance. The presence of the majority of trees with height of < 20 m (99 %) further confirmed the forest’s dynamic status.


2009 ◽  
Vol 115 (2) ◽  
pp. 558-562 ◽  
Author(s):  
Kai-Wei Lin ◽  
Chiung-Hui Liu ◽  
Huang-Yao Tu ◽  
Horng-Huey Ko ◽  
Bai-Luh Wei
Keyword(s):  

1996 ◽  
Vol 43 (3) ◽  
pp. 691-694 ◽  
Author(s):  
Anake Kijjoa ◽  
Honorina M. Cidade ◽  
Madalena M.M. Pinto ◽  
Maria JoséT.G. Gonzalez ◽  
Choojit Anantachoke ◽  
...  
Keyword(s):  

2019 ◽  
Vol 2 (02) ◽  
pp. 46-57
Author(s):  
Risa Umami ◽  
Hasyim As’ari ◽  
Tristi Indah Dwi Kurnia

Pemanfaatan tanaman sebagai bahan bangunan dan kerajinan merupakan kegiatan turun temurun yang telah dipraktikkan oleh Suku Using Kabupaten Banyuwangi. Suku Using memanfaatkan tanaman sebagai bahan bangunan dan kerajinan menjadi beranekaragam jenis konstruksi bangunan dan produk kerajinan yaitu atap, pintu, jendela, kusen, lantai, tiang, plafon, reng, bekisting, ukiran, peralatan/perabot rumah tangga, hiasan, alat musik, anyaman, pewarna tekstil dan seni barong, untuk mendukung kegiatan pemanfaatan tanaman perlu adanya identifikasi mengenai potensi tanaman berguna. Penelitian ini dilakukan untuk mengetahui tanamanyang berpotensi sebagai bahan bangunan dan kerajinan, mengetahui pengetahuan masyarakat Suku Using Banyuwangi tentang pemanfaatan tanaman sebagai bahan bangunan dan kerajinandengan jumlah responden yaitu 390 orang. Metode yang digunakan adalah metode deskriptif eksploratif dengan teknik survei lapangan dan wawancara dari narasumber yang berprofesi sebagai ketua adat, tukang bangunan, pengrajin kerajinan khas banyuwangi dan masyarakat Suku Using. Data yang diambil meliputi data keanekaragaman tanaman yang digunakan masyarakat Using sebagai bahan bangunan dan kerajinan.Penelitian ini dilaksanakan pada bulan Maret sampai Juli 2018 di lima kecamatan di Kabupaten Banyuwangi yaitu meliputi Kecamatan Glagah, Kecamatan Giri, Kecamatan Kabat, Kecamatan Singojuruh dan Kecamatan Rogojampi. Hasil penelitian menunjukkan bahwa terdapat 33 spesies yang dimanfaatkaan sebagai bahanbangunan dan kerajinan oleh masyarakat Using terdiri atas 18 familia. Spesies yang paling dominan digunakan adalah jati (Tectona grandis), kelapa (Cocos nucifera), bambu (Gigantochloa apus), mahoni (Swietenia mahagoni), nangka (Artocarpus heterophyllus), pulai (Alstonia scholaris), kopi (Coffea sp.), rotan (Calamus javanensis), dan bendo (Artocarpus elasticus).  


2021 ◽  
Vol 22 (10) ◽  
Author(s):  
Karmini Karmini ◽  
Karyati Karyati ◽  
Kusno Yuli Widiati

Abstract. Karmini, Karyati, Widiati KY. 2021. The ecological and economic values of a 50 years old secondary forest in East Kalimantan, Indonesia. Biodiversitas 22: 4597-4607. Secondary forests in the tropics are often ignored since they are assumed to have low ecological functions while on the other hand the economic values have been reduced. This study aimed to analyze the ecological and economic values of a 50-year secondary forest in East Kalimantan that experienced several various land-use changes. The ecological aspects analyzed were stand structure, floristic composition, and species diversity. Economic aspects include log prices, logging costs, profit margins, and stumpage values. A vegetation survey of woody trees with a diameter at breast height of more than 5 cm was carried out on ten plots measuring 20 m × 20 m each. A total of 437 trees belonging to 38 species, 30 genera, and 19 families were recorded with Moraceae and Euphorbiaceae were the most dominant families with Family Important Value (FIV) of 86.79. The three most dominant species were Macaranga motleyana (IVi of 50.95), Artocarpus elasticus (IVi of 34.41), and Symplocos fasciculata (IVi of 31.46). The trees in the study plot have a diversity index of 1.33, dominance index of 0.07, evenness index of 0.37, and species richness of 6.09. The average logging cost, logs price, lumber price, profit margin, and stumpage value at secondary forest were USD69.43 m-3, USD44.63 m-3, USD100.03 m-3, USD10.30 m-3, and USD28.73 ha-1, respectively. The 50 years old secondary forests in East Kalimantan have biodiversity, especially trees that have economic value, therefore their existence needs to be preserved and their use is carried out by maintaining and increasing biodiversity.


Author(s):  
Sunardi Sunardi ◽  
Wiwin Tyas Istikowati ◽  
Norhidayah Norhidayah ◽  
Dahlena Ariyani ◽  
Azlan Kamari

Microcrystalline cellulose is an important derivative of cellulosic material obtained from wood and non-wood sources, and is used for pharmaceutical, food, cosmetics, and other industries. The aim of this study was to determine the effect of various hydrochloric acid concentrations on the characteristics of cellulose microcrystals isolated from terap wood (Artocarpus elasticus). The microcrystalline cellulose was hydrolyzed using hydrochloric acid, at concentrations of 1.5 N, 2.5 N, and 3.5 N for 15 minutes, and within a temperature range of 100-105o C. Thesamples were then analyzed for changes in color and functional groups with Fourier Transform Infrared spectroscopy (FTIR), while crystallinity index was evaluated through X-Ray Diffraction Analysis (X-RDF). The FTIR results showed similarity with commercial products, while X-Ray Diffraction confirms the highest crystallinity index in the 2.5 N of cellulose I (69.395 %) and cellulose II (82.73 %).


2015 ◽  
Vol 9 (1) ◽  
Author(s):  
Nur Iffah Shafiqah Binti Abdullah ◽  
Mansor B. Ahmad ◽  
Kamyar Shameli

Jurnal Wasian ◽  
2017 ◽  
Vol 4 (1) ◽  
pp. 01 ◽  
Author(s):  
Encep Rachman ◽  
Encep Rachman

ABSTRAK Cagar Alam Situ Panjalu merupakan salah satu kawasan konservasi  tertua di Indonesia.  Sebagai kawasan konservasi, C.A. Situ Panjalu  tentu  memiliki berbagai jenis flora yang bermanfaat sebagai pelestarian  plasma nuftah, ilmu pengetahuan dan pendidikan. Penelitian  ini bertujuan untuk mengetahui dinamika struktur vegetasi C.A. Situ  Panjalu.  Metode yang digunakan adalah kombinasi antara sistem petak tunggal dengan sistem jalur, yang disebut juga  dengan belt transect. Jalur dibuat dengan ukuran 500 m (disesuaikan  dengan jarak panjang cagar alam) dan lebar 20 m.  Jalur dibuat  sebanyak 2 buah, dengan jarak antar jalur 100 m.  Pada setiap jalur dibuat petak dengan ukuran panjang 50 m dan lebar 20 m. Hasil penelitian menunjukkan bahwa pada tingkat semai tiga jenis tumbuhan yang mempunyai nilai INP tertinggi, yaitu: Dysoxylum densiflorum MIQ (47,64 %), Calamus zollingerii (47,64 %), dan Sterculia macrophylla VENT. (44,37 %). pada tingkat pancang ditemukan empat jenis tumbuhan dengan nilai INP masing-masing, yaitu: Litsea cassiaefolia (114,29 %); Dysoxylum densiflorum MIQ (57,14 %); Huru pandak dan Endiandra rubescens MIQ (14,29 % ) . Pada tingkat tiang tiga jenis yang mempunyai nilai INP paling tinggi yaitu: Dysoxylum densiflorum MIQ. (143,04 %);  Litsea cassiaefolia (99,78 %) dan Artocarpus elasticus Reinw (9,53 %). Pada tingkat pohon tiga jenis dengan nilai INP tertinggi, yaitu: Dysoxylum densiflorum MIQ. (147,924 %), Litsea cassiaefolia (68,753 %),  Ki Jangkar (INP tertinggi ketiga 31,410 %).Kata kunci: Cagar Alam,  Situ Panjalu, vegetasi, Dysoxylum densiflorum MIQ  ABSTRACT Wildlife sanctuary of Panjalu  lake is one of the oldest conservation area in Indonesia. As a conservation area, Panjalu Lake is certainly has different species of flora that are useful as germplasm conservation, science and education. This study aims to determine the structural dynamics vegetation of wildlife sanctuary of  Panjalu lake .  The method used is a combination of single plot with line system, which is also called as belt transect. Paths made with size of 500 m (adjusted for long-distance of the area) and a width of 20 m.  Paths are made by 2 pieces, with 100 m spacing between lines. At every point made plot with a length of 50 m and a width of 20 m. The results showed that the seedlings are three types of plants that have the highest importance index value (IIV), namely: Dysoxylum densiflorum MIQ (47.64%), Calamus zollingerii (47.64%), and Sterculia macrophylla VENT.(44.37%).  Of saplings stage found four species with IIV, respectively, are: Litsea cassiaefolia (114.29%); Dysoxylum densiflorum MIQ (57.14%); Litsea sp and Endiandra rubescens MIQ (14.29%).  At level three types of poles that have the highest IIV, namely :Dysoxylum densiflorum MIQ. (143.04%); Litsea cassiaefolia (99.78%) and Artocarpus elasticus Reinw (9.53%).  . At level tree species with the highest IIV, namely: Dysoxylum densiflorum MIQ. (147.924%), Litsea cassiaefolia (68.753%), Eugenia fastigiata MIQ (third highest IVI 31.410%).Keywords:  Wildlife sanctuary, Panjalu lake, vegetation, , Dysoxylum densiflorum MIQ 


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