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All Journal Jurnal Ilmu dan Teknologi Hasil Hutan Agroland : Jurnal Ilmu-Ilmu Pertanian Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Belantara Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Hutan Tropika Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Penelitian Hasil Hutan Jurnal Farmasi Udayana
Ganis Lukmandaru
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Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management Education Environmental Science Materials Science & Nanotechnology Medicine & Pharmacology

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HUBUNGAN ANTARA KADAR EKSTRAKTIF DENGAN SIFAT WARNA PADA KAYU TERAS JATI Ganis Lukmandaru
Jurnal Penelitian Hasil Hutan Vol. 34 No. 3 (2016): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2016.34.3.207-216

Abstract

Beside for its high natural durability and resistancy of weather properties, teak (Tectona grandis) wood is also valued for its beautiful grain and colour. Theoretically, wood colour is highly affected by extractive content, particularly in the heartwood. Identification of correlation between wood colour and extractive content was determined through wood colour and extractive measurements on the outer part of heartwood zone. The wood samples were collected from two locations of Perum Perhutani forest plantations, i.e. KPH Randublatung (35 trees, age class III-IV) and KPH Purwakarta (32 trees, age class VI). Samples were cut from bottom part of the trees and then ground into powder measuring of 40-60 mesh. The wood colour properties(CIE-L*a*b, CIE-L*C*h, CIE-X*Y*Z, Munsell Colour Chart and ISO Brightness) were then measured. Solubility of the teak wood extractives were determined by extracting the powder in ethanol-benzene and hot water respectively. Results showed that the range of colour properties were L*= 40-62; a* = 3-11; b* = 19-31; C* = 20-31; h = 70-82; X= 10-25; Y= 8-23; Z=4-13; H=5-8; V =3-8; C =3-6; and W (ISO Brightness) = 4-12. Different sample location resulted in different trends of correlation between colour properties and extractive contents. No significant correlation was found between extractive solubles in hot water and colour parameters. In general, the best correlations were encountered between brightness parameters from CIE-L*a*b* or ISO with ethanolbenzene extractive contents (r=- 0.54 or 0.50, respectively).
Free Radical and Fungal Inhibition of Methanol Soluble Extract of Mixed Coffee Parchment (Coffea arabica and Coffea robusta) Grown in Yogyakarta, Indonesia Idlohatud Dilalah; Masendra; Agus Ngadianto; Ganis Lukmandaru; Brandon Aristo Verick Purba
Jurnal Farmasi Udayana Volume 14, Nomer 1, Tahun 2025
Publisher : Departement of Pharmacy, Faculty of Mathematics and Natural Science, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JFU.v14.i01.p07

Abstract

Di Suroloyo, Yogyakarta, Coffea robusta dan Coffea arabica ditanam untuk menghasilkan bubuk kopi sebagai usaha lokal. Namun, pemanfaatannya menghasilkan limbah berupa kulit tanduk kopi (coffee parchment). Penelitian ini bertujuan untuk mengevaluasi potensi penghambatan residu kulit tanduk kopi terhadap radikal DPPH (2,2-difenil-1-pikrilhidrazil) dan jamur pelapuk putih (Phanerochaete chrysosporium). Campuran kulit tanduk kopi dari kedua spesies tersebut diekstraksi dengan metanol pada suhu ruang selama tiga hari. Ekstrak larut metanol kemudian dianalisis kandungan total fenolik, total flavonoid, aktivitas penghambatan terhadap DPPH dan pertumbuhan jamur pelapuk putih, serta dilakukan analisis GC-MS. Kandungan total fenolik dan flavonoid masing-masing adalah 0,491 µmol/mg dan 0,006 µmol/mg. Nilai IC50 sampel antioksidan dan antijamur masing-masing sebesar 1257,1 µg/mL dan 1166,7 µg/mL. Analisis GC-MS menunjukkan bahwa asam lemak merupakan konstituen yang dominan. Selain itu, kafein juga terdeteksi pada kulit tanduk kopi campuran C. arabica dan C. robusta. Dapat disimpulkan bahwa aktivitas antioksidan (DPPH) dan antijamur pada sampel disebabkan oleh kandungan fenolik total, flavonoid, serta kafein dalam ekstrak larut metanol dari kulit tanduk kopi.
Co-Authors Abdul Azis Agus Ngadianto Anisa A Gazidy Anita Apriliani Dwi Rahayu Brandon Aristo Verick Purba Dera Fara Fitria Dhuria Maulidya Sari ENY FARIDAH Fanny Hidayati Harry Praptoyo Idlohatud Dilalah Joko Sulistyo Kasmudjo Kasmudjo Krisnawati Lisna Hidayati Masendra Mauidlotul Hasanah Muhammad Asdar Nuridha I Retnaningrum Ragil Widyorini Rini Pujiarti Rizki Arisandi Sigit Sunarta Sushardi T.A. Prayitno Tibertius A Prayitno Tomy Listyanto Utari Mardatillah Y. Suranto