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All Journal Jurnal Penelitian Karet Journal of Technomaterial Physics
Diana Alemin Barus, Diana Alemin
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Agriculture, Biological Sciences & Forestry Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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IDENTIFIKASI DAN UJI METABOLIT SEKUNDER BANGUN-BANGUN (COLEUS AMBOINICUS) TERHADAP PENYAKIT JAMUR AKAR PUTIH (RIGIDOPORUS MICROPORUS) DI LABORATORIUM Dalimunthe, Cici Indriani; Sembiring, Yan Riska Venata; Andriyanto, Mochlisin; Siregar, Tumpal HS; Darwis, Hilda Syafitri; Barus, Diana Alemin
Jurnal Penelitian Karet JPK : Volume 34, Nomor 2, Tahun 2016
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v34i2.295

Abstract

Penyakit Jamur Akar Putih (JAP) termasuk penyakit berbahaya ditinjau dari akibat yang ditimbulkannya dan dapat menyebabkan kerugian finansial yang dihitung secara nasional mencapai IDR 300 miliar setiap tahunnya. Pengendalian penyakit dengan memanfaatkan ekstrak bangun-bangun yang berpotensi sebagai antimikroba belum banyak diterapkan di perkebunan karet. Tujuan penelitian ini adalah untuk mengidentifikasi metabolit sekunder bangun-bangun dan mengetahui persentase penghambatan metabolit sekunder bangun-bangun terhadap penyakit JAP skala laboratorium. Penelitian menggunakan Rancangan Acak Lengkap (RAL) faktorial dengan 2 fakor dan 3 ulangan. Faktor yang digunakan adalah dosis dan pelarut (aseton, n-heksana dan metanol). Komponen yang dianalisis adalah akar dan daun bangun-bangun untuk mengetahui metabolit sekunder yang dihasilkan bangun-bangun melalui identifikasi fitokimia kemudian diekstraksi dengan berbagai pelarut untuk diuji terhadap Jamur Akar Putih (Rigidoporus microporus). Parameter yang diamati yaitu luas pertumbuhan jamur dan persentase penghambatan JAP. Hasil identifikasi fitokimia menunjukkan bahwa akar dan daun bangun-bangun mengandung senyawa flavonoida, glikosida dan saponin. Senyawa ini tergolong dalam kategori senyawa polar dan semipolar sehingga akan mudah diekstraksi dengan menggunakan pelarut polar (aseton). Uji pendahuluan ekstraksi akar dengan berbagai macam pelarut dan dosis menunjukkan interaksi yang berpengaruh nyata. Persentase penghambatan tertinggi terdapat pada ekstrak akar dengan menggunakan pelarut aseton sebesar 98,46% pada dosis 10%. Uji lanjutan hasil fraksinasi dengan menggunakan kertas cakram menunjukkan daya hambat terkuat terdapat pada fraksi n-heksana (14-18,5 cm), fraksi etil asetat (13,5-15,5 cm), dan ekstrak etanol (7-10,5 cm).
Investigation of the Effect of 60% of the Addition of Latex on Asphalt Pen 60-70 Barus, Diana Alemin
Journal of Technomaterial Physics Vol. 2 No. 2 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i2.5403

Abstract

This study discussed the increase of latex 60% addition to obtain the standard of asphalt 60-70. The comparison used were without the increase of latex addition (L0), 1000 g penetration of asphalt 60-70 with 100 g latex with 60 % degree or 10 phr ( L1), 1000 g penetration of asphalt 60-70 with 200 g latex 60 % degree or 20 phr ( L2), 1000 g penetration of asphalt 60-70 with 300 g latex 60 % degree or 30 phr ( L3), 1000 g penetration of asphalt 60-70 with 400 g latex 60 % degree or 40 phr ( L4). All of the samples homogenized by heating at 150ºC temperature and 250 rpm within 30 minutes then soaked in the tub for 30 minutes at 25ºC.
The Effect of Addition of Used Styrofoam on the Characteristics of Asphalt Physical Properties Barus, Diana Alemin
Journal of Technomaterial Physics Vol. 2 No. 2 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i2.5404

Abstract

Styrofoam had many purposes, especially for the safety of electronic objects, because it is light, durable and strong. The volume of styrofoam is enormous, reaching 30% of total waste in the world. Therefore, it causes problems if disposed of and it will become a very inconvenient waste and it can undermine the environment. This study aims to determine the effect of adding former styrofoam waste to asphalt on the characteristics of the 60/70 pen asphalt. The sample was made by melting the Styrofoam with Xylene then putting it in heated asphalt and then stirring it evenly. Next, Styrofoam enters the material into the sample container and then is refrigerated outside for 1 hour. After that, the sample is immersed in water for 3 hours. The sample meets the asphalt requirements test for each sample including penetration test, softening point, flash point, burning point, density, and ductility. This shows that the higher the concentration, the addition of styrofoam mixed with asphalt resulted in conversion and increased performance of the mixture. While at density, it appears that the addition of Styrofoam results in a lower density value.
Co-Authors Cici Indriani Dalimunthe Hilda Syafitri Darwis, Hilda Syafitri Mochlisin Andriyanto, Mochlisin Tumpal HS Siregar, Tumpal HS Yan Riska Venata Sembiring, Yan Riska Venata