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All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Biologi Tropis
Rika Ratnasari
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Physics

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Identification of Bacteria in Fresh Vegetables from The Traditional Market of Mataram City Syamsul Bahri; Rika Ratnasari; Ulfah Nurkhaeroni; Mujitahid Mujitahid
Jurnal Biologi Tropis Vol. 22 No. 4 (2022): October - December
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i4.4445

Abstract

Indonesia is very rich in potential for vegetable cultivation. Vegetables contain a lot of vitamins and minerals. Therefore, people prefer to eat vegetables in a fresh state either as salads or fresh vegetables. However, contamination of pathogenic bacteria is much greater both at the farmer and trader levels. Therefore this study aims to determine the feasibility of consumption and identify bacteria in fresh vegetables in the traditional market of Mataram City. Samples in the form of lettuce, cucumber, cabbage, and long beans were taken from Pagesangan, Kebon Roek, Gunung Sari, and Bertais markets, respectively. The existence of bacteria were detected using traditional method by inoculating samples in agar cultures followed by biochemical testing and Gram staining. Species of bacteria that can be identified from samples are Enterobacter cloacae, Bhanhamella catarrhalis, E-coli, Staphylococus sapropyticus, and Aeromonas hydrophila. Based on the data, long beans from the Bertais market and lettuce from the Pagesangan, Kebon Roek, and Gunung Sari markets are not suitable for consumption because the TPC yield exceeds the consumption quality standard of 105-106 CFU/g.
Pengembangan Perangkat Pembelajaran Berbasis Proyek Terintegrasi STEM pada Materi Suhu dan Kalor untuk Meningkatkan Keterampilan Generik Sains Dan Kreativitas Peserta Didik: Instrumen Validasi Rika Ratnasari; Aris Doyan; Muh. Makhrus
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.4178

Abstract

The aim of this research is to develop appropriate (valid and reliable) learning tools to improve students' generic science skills (KGS) and creativity. The tool developed was based on an integrated STEM project on temperature and heat material in terms of the validity and reliability of the instrument. These tools are in the form of syllabus, RPP, LKPD, and teaching materials as well as KGS instruments and creativity instruments. The type of research is Research and Development (R&D). Device development uses the ADDIE model (analysis, design, development, implementation, and evaluation). The research subjects were class XI MIA students at SMAIT Putri Abu Hurairah Mataram. The results of the syllabus validation obtained an Aiken V index score of 0.88 in the very valid category, RPP 0.84 in the very valid category, LKPD 0.81 in the very valid category, teaching materials 0.81 in the very valid category, KGS instruments 0.79 in the valid category, and creativity instrument 0.80 valid category. The overall average validation score is 0.82 with a very valid category. The results of the reliability of the syllabus, RPP, LKPD, teaching materials, KGS instruments and creativity are reliable with an average score of 93%. Based on these results, integrated STEM project-based learning tools are very feasible (valid and reliable) to be used in learning activities to improve students' generic science skills and creativity.
Co-Authors Aris Doyan Muh. Makhrus Mujitahid Mujitahid Syamsul Bahri Ulfah Nurkhaeroni