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All Journal HAYATI Journal of Biosciences Jurnal Ilmu Pertanian Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Agrifor : Jurnal Ilmu Pertanian dan Kehutanan Biology, Medicine, & Natural Product Chemistry Jurnal Kimia Riset Al-Kimia Journal of Tropical Crop Science Jurnal Inovasi Hasil Pengabdian Masyarakat (JIPEMAS) Jurnal Kartika Kimia Journal of Applied Materials and Technology Jurnal Abdimas Kartika Wijayakusuma Jurnal Pusat Inovasi Masyarakat Indonesian Journal of Chemical Studies (Indones. J. Chem. Stud.) Gunung Djati Conference Series
Deden Saprudin
Department Of Chemistry, Faculty Of Mathematics And Natural Science, Bogor Agricultural University,Jl. Raya Darmaga, Bogor, Indonesia
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Journal : HAYATI Journal of Biosciences

 1 
Characterization of Xylanase Streptomyces spp. SKK1-8 ANJA MERYANDINI; TRIO HENDARWIN; DEDEN SAPRUDIN; YULIN LESTARI
HAYATI Journal of Biosciences Vol. 13 No. 4 (2006): December 2006
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (134.007 KB) | DOI: 10.4308/hjb.13.4.151

Abstract

Streptomyces spp. SKK1-8 producing xylanase was isolated from soil sample from Sukabumi West Java. The xylanase have an optimum condition at pH 6 and 50 0C. Addition of 5 mM Cu2+ decreased the xylanase activity up to about 77%, whereas not by other cations. The xylanase was stable at 3 0C for 48 hours, and the enzyme half lifetime was 1 hour 45 minute at 50 0C. This xylanase showed the highest activity on oatspelt xylan, and their molecular masses were estimated approximately 16.80, 15.21, and 13.86 kDa. HPLC analysis showed that xylosa and arabinosa were the main hydrolytic product of birchwood xylan. Key words: xilanase, Streptomyces spp., characterization, zymogram and SDS-PAGE, stability
Gold Mine Wastewater Induced Morpho-physiological Alteration of Four Biodiesel Producing Species Hamim Hamim; Lutfiani Lutfiani; Deden Saprudin; Putri Nur Azizah Hutagalung; Hadisunarso Hadisunarso; Luluk Setyaningsih; Hirmas Fuady Putra
HAYATI Journal of Biosciences Vol. 28 No. 1 (2021): January 2021
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.28.1.63

Abstract

This experiment aimed to determine the adaptability of four biodiesel-producing plants to gold mine wastewater based on morpho-physiological properties. Four species namely jatropha (Jatropha curcas), castor bean (Ricinus communis), wild candlenut (Reutealis trisperma) and bead tree (Melia azedarach) were grown in water culture using Hoagland solution for 2 weeks and then treated with gold mining wastewater at 0% (control), 25%, 50%, and 75% (v/v) for 3 weeks. Growth, anatomical and physiological characteristics were observed during the treatment. The results showed that gold mine wastewater significantly decreased growth of the four species despite varied among the species. Wastewater had significant effect on leaves anatomy of Jatropha but not on others. It also significantly induced the increase of malondialdehyde (MDA) content in Jatropha and castor bean, but not in wild candlenut and bead-tree. Meanwhile, the treatment significantly decreased chlorophyll content of all species with the most in bead-tree plant, and leaves relative water content (RWC) particularly in castor bean and bead-tree plants. There was strong negative correlation between the increase of MDA content and the decrease of chlorophyll content and leaf RWC. Among the four species, wild candlenut (R. trisperma) was the most resistant to gold mine wastewater based on morphological and physiological properties.
Co-Authors Afifi, Muhammad Ridho Ahmad Fadli Akhmad Aghzath, Ananjaya ALINA AKHDIYA Amun Amri Anja Meryandini Arrahman, Naufal Citra Ajeng Palupi Dian Siska RF Dyah Iswantini Esty Octiana Sari Eti Rohaeti EVIE LESTARIANA Fahrizal Hazra Fendy Firmansyah, Shaeful Hadisunarso Hadisunarso Hamim Hamim Heru Supriyatno Hikmah, Anisa Nurul Hirmas Fuady Putra Ilfa Nuraisyah Ismawati, Iis Iswatun Annas Kevin Setiawan Latifah Kosim Darusman Luluk Setyaningsih Lutfiani Lutfiani Mohammad Khotib Muhammad Farid Novik Nurhidayat Novik Nurhidayat Obie Farobie Permana, Ifri Surya Prihandono, Prima Agung Putri Nur Azizah Hutagalung Ramanis, Imelya Rani Apriani Shaeful Firmansyah Sudradjat Sudradjat Sukoco Sukoco Sulistyaningsih, Yohana C Tetty Kemala TRIO HENDARWIN Umar, Ali Wiwik Hartatik YULIN LESTARI