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Abstrak :
The role of cinnamic acid in resistance of black pepper to black stem rot were studied by using Lampung Daun Lebar (LDL), Jambi and Bangka variety. Intact and detached leaves were inoculated with two Phytophthora isolates namely Belitung and Bogor isolate. The development of symptom and cinnamic acid content were measured on infected leaves using Spectrophotometer uv vis on ware length of 200 - 400 run. The result indicated that cinnamic acid rapidly decreased during the first2 days after inoculation. Based on the symptom and cinnamic acid content, Bangka variety was proved to be more resistant than the other two black pepper varieties

Abstrak :
Fusarium verticillioides is the causal agent of ear, stalk and root rot of maize that results in the severe reduction in yields and quality of infected products. Endophytic fungi have been purported as potential candidates in controlling pathogens since they are considered strong plant mutualists that confer disease resilience to their host. The present study was carried out to determine the in vitro antagonistic activity and biocontrol potential of endophytic Aspergillus spp. associated with P. amboinicus leaves against F. verticillioides. Three fungal endophytes from the genus Aspergillus were isolated and identified from the leaves of P. amboinicus, namely A. flavus, A. terreus and A. niger. The fungal isolates were tested for antagonism against F. verticillioides in dual culture plates. Results indicate that the Aspergillus endophytes can restrict growth of F. verticillioides and employ varying mechanisms of antagonism. A. niger inhibited F. verticillioides by 47.37%, followed by A. flavus (41.02%) and A. terreus (27.91%) respectively. Observations of dual culture plates revealed that A. flavus and A. niger antagonized the pathogen via overgrowth mechanism while A. terreus employed antibiosis to restrict the growth of F. verticillioides. The varying degrees of antagonism exhibited by the Aspergillus endophytes show their potential as biocontrol agents and source of bioactive compounds

Abstrak :
This study focuses on treatment of landfill leachate in column experiments by immobilized trametes versicolor on polyurethane foam, collected from nonthaburi landfill site, thailand....

Abstrak :
Keberadaan lignin yang dapat menjadi masalah dalam produksi biofuel dapat diatasi dengan cara delignifikasi. Proses delignifikasi menggunakan mikroorganisme telah menjadi perhatian akhir-akhir ini. Mikroorganisme yang berperan adalah jamur pelapuk putih dan bakteri. Dalam melakukan proses biodelignifikasi, kedua mikroorganisme ini menghasilkan enzim ligninolitik. Enzim ligninolitik antara jamur pelapuk putih dan bakteri menghasilkan persentase delignifikasi dan aktivitas enzim yang berbeda.  Artikel review ini meninjau ulasan mengenai proses biodelignifikasi menggunakan enzim ligninolitik dari jamur pelapuk putih dan bakteri yang akan dibandingkan antara hasil delignifikasi dan aktivitas enzim.  Penulis berharap dapat memberikan gambaran terkait perbandingan antara enzim ligninolitik dari kedua mikroorganisme tersebut.

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The existence of lignin which can be a problem in biofuel production can be overcome by delignification. The delignification process using microorganisms has become a concern lately. The microorganisms that play a role are white rot fungi and bacteria. In carrying out the process of biodelignification, these two microorganisms produce ligninolytic enzymes. Ligninolytic enzymes between white rot fungi and bacteria produce different percentages of delignification and enzyme activity. This review article reviews a review of the biodelignification process using ligninolytic enzymes from white rot fungi and bacteria to be compared between the results of delignification and enzyme activity. The author hopes to provide an overview related to the comparison between ligninolytic enzymes of the two microorganisms.

Abstrak :
This study was focused on production and utilisation of loccase in pulp bleaching process. Loccase was produced by white-rot fungi of Marasmius sp which was immobilised in luffa sponge in a modified immersion bioreactor....