Subowo, Yohanes
Unknown Affiliation

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

The application of Rigidoporus sp J12 and Stenotrophomonas maltophilia BM in the degradation of batik waste Subowo, Yohanes; Suliasih, Suliasih; Widawati, Sri
Biosaintifika: Journal of Biology & Biology Education Vol 15, No 3 (2023): December 2023
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v15i3.41987

Abstract

The batik industry in Indonesia produces batik waste which pollutes the environment. This waste can be degraded using laccase-producing microorganisms. The microorganisms used in the research were the fungus Rigidoporus sp J12 and the bacteria Stenotrophomonas maltophilia BM. This research aims to determine the ability of Rigidoporus sp J12 and Stenotrophomonas maltophilia BM and their consortium in producing laccase, observing their ability to degrade Poly R-478 which is an indicator of phenoloxidase activity and batik waste. Microorganisms are grown in growth media and then placed in media containing Poly R-478 or batik waste. Inducers are added to increase laccase activity. The inducers used were 15 g/L sucrose, 200 µM CuSO4 and 40 mM veratryl alcohol. The results showed that Rigidoporus sp J12 and Stenotrophomonas maltophilia BM produced laccase in PDB and NA media. The highest laccase activity was found in the enzyme produced by Rigidoporus sp J12 in PDB media at a temperature of 40°C, media pH 6.0 and the addition of sucrose. Rigidoporus sp J12 degraded batik waste by 39.38% and increased by 2.12 times after adding sucrose and incubation for 15 days. These bacteria and fungi can be used to degrade batik waste in order to prevent environmental pollution. Using the fungus Rigidoporus sp J12 purely is more profitable than using it with S. maltophilia BM bacteria.
“Jroning Salah”, Realitas Sosial Politik: Sebuah Proses Kreatif Karawitan yang berpijak pada Salah Gumun Subowo, Yohanes; Wahyudi, Aris
Resital: Jurnal Seni Pertunjukan Vol 24, No 1 (2023): April 2023
Publisher : Institut Seni Indonesia Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24821/resital.v24i1.8330

Abstract

ABSTRACT“Jroning Salah”, A Socio-Political Reality: A Karawitan Creative Process based on Salah Gumun. “Jroning Salah” is a karawitan work that tells a social phenomenon based on one of Gender Barung, Indonesian traditional musical instrument, whose patterns called “salah gumun” become the basis of this artwork. This work is a new genre in karawitan projecting three “wrong” phenomena in Javanese: “Salah Gumun”, “Salah Kaprah”, and “Salah Kedadèn”. Therefore, the work is entitled “Jroning Salah”. The authors used acoustic approach whose point of view emphasizes combining two or more tones to express all ideas into karawitan compositions. The presence of dance in this karawitan composition is not a collaboration, but a strengthening of the presentation. Its function is to give tone pressure on certain instruments. Furthermore, the authors also implemented experimental method to avoid regulatory absoluteness for the sake of imagination development— an exploration process to find particular voices as alternatives that are relatively capable of representing ideas. Following the phenomenon of “wrong” as the source of the idea for this work, “Jroning Salah” was constructed in three repertoires entitled “Salah Gumun”, “Salah Kaprah”, and “Salah Kedadèn”. The presentation process was conducted sequentially and continuously, each of which was an expression of a situation in each story line.ABSTRAK“Jroning salah” adalah karya karawitan yang menceritakan salah satu fenomena sosial yang didasarkan pada salah satu pola tabuhan gender, yaitu “salah gumun”. Karya ini merupakan genre baru dalam karawitan untuk mempresentasikan tiga fenomena “salah”, yaitu salah kaprah, salah gumun, dan salah kedaden. Oleh karena itu, karya ini diberi judul “Jroning Salah”. Sudut pandang pendekatan akustik yang menekankan pada perpaduan dua nada atau lebih untuk mengungkapkan semua gagasan ke dalam komposisi karawitan. Kehadiran tarian dalam komposisi karawitan ini bukan sebagai kolaborasi, melainkan hanya sebagai penguatan presentasi. Fungsinya untuk memberi tekanan nada pada instrumen tertentu. Metode eksperimen digunakan untuk menghindari kemutlakan regulasi agar mampu mengembangkan imajinasi. Eksplorasi untuk menemukan suara tertentu sebagai suara alternatif yang relatif mampu merepresentasikan ide. Sesuai dengan fenomena salah sebagai sumber ide karya ini, maka “Jroning Salah” ini dibangun menjadi tiga repertoar, yaitu “Salah Gumun”, “Salah Kaprah”, dan “Salah Kedadèn”. Proses penyajiannya dibuat secara berurutan dan berkesinambungan, yang masing-masing merupakan ekspresi situasi fase cerita.