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All Journal Saintifika Jurnal Pendidikan Biologi Indonesia Bioeksperimen: Jurnal Penelitian Biologi Proceeding Biology Education Conference
Hasminar Rachman Fidiastuti, Hasminar Rachman
Fakultas Ilmu Kesehatan, Universitas Tribhuwana Tunggadewi, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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POTENSI BAKTERI INDIGEN DALAM BIODEGRADASI AIR SUNGAI Fidiastuti, Hasminar Rachman
Saintifika Vol 16, No 1 (2014)
Publisher : Jurusan Pendidikan MIPA FKIP Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.829 KB)

Abstract

Sungai Badeg merupakan salah satu sungai kecil di kota Malang yang tercemar limbah pabrik kulit. Hasil pengukuran kualitas pada sampel air sungai Badeg menunjukkan kondisi yang tidak memenuhi baku mutu air yaitu TSS sebesar 400 ppm, BOD sebesar 331 mg/L, COD sebesar 544 mg/L, DO sebesar 3,6 mg/L dan kadar lemak sebesar 280 mg/L. Lemak merupakan salah satu bahan organik yang sulit untuk diuraikan secara alamiah. Biodegradasi diharapkan dapat menjadi solusi perbaikan kondisi perairan dengan cara memanfaatkan aktivitas bakteri indigen dengan karakteristik pendegradasi lemak. Kegiatan biodegradasi dilakukan dengan cara mengintroduksi bakteri indigen (yang telah diseleksi dari proses isolasi dan memiliki potensi pendegradasi paling tinggi diantara jenis isolat lain yang ditemukan) kemudian dikultur dan diinokulasikan kembali pada sampel air sehingga proses transformasi akan berlangsung lebih optimal. Biodegradasi dilakukan secara in vitro, dan menunjukkan perubahan yang signifikan terhadap perubahan kadar TSS menjadi 293,3 ppm, BOD sebesar 117,3 mg/L, COD sebesar 165,3 mg/L, DO sebesar 19 mg/L dan kadar lemak sebesar 0,02 mg/L. Biodegradasi dengan memanfaatkan bakteri indigen dapat menjadi alternatif dalam memperbaiki kualitas perairan.
POTENSI BAKTERI INDIGEN DALAM MENDEGRADASI LIMBAH CAIR PABRIK KULIT SECARA IN VITRO Fidiastuti, Hasminar Rachman; Suarsini, Endang
Bioeksperimen: Jurnal Penelitian Biologi Vol 3, No 1: Maret 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/bioeksperimen.v3i1.3665

Abstract

Biodegradasi dapat menjadi salah satu teknologi pengolahan air limbah yang aman dan berwawasan lingkungan. Secara alamiah, bakteri yang berpotensi dalam proses biodegradasi dapat diisolasi dari limbah itu sendiri. Bakteri inilah yang disebut sebagai bakteri indigen. Sungai Badheg di kota Malang merupakan salah satu sungai yang tercemar limbah pabrik kulit. Hasil uji kualitas air dari sampel menunjukkan kondisi yang tidak memenuhi baku mutu air, yaitu TSS sebesar 400 ppm, BOD sebesar 331 mg/L, COD sebesar 544 mg/L, DO sebesar 3,6 mg/L dan kadar lemak sebesar 280 mg/L. Limbah pabrik kulit memiliki karakteristik yang berbau tajam, berwarna hitam pekat, dan mengandung lemak dalam jumlah yang besar. Lemak diketahui sebagai salah satu bahan organik yang sulit untuk diuraikan secara alamiah. Peran bakteri indigen akan mengoptimalkan proses biodegradasi lemak yang terjadi. Kegiatan biodegradasi dilakukan dengan cara mengintroduksi bakteri indigen yang telah diseleksi dari proses isolasi dan memiliki potensi pendegradasi paling tinggi, kemudian dikultur dan diinokulasikan kembali pada sampel air, sehingga proses transformasi akan berlangsung lebih optimal. Hasil biodegradasi secara in vitro menggunakan bakteri indigen, menunjukkan perubahan TSS sebesar 293ppm, BOD 117 mg/L, COD sebesar 165 mg/L, DO sebesar 19 mg/L dan kadar lemak sebesar 0,02 mg/L. Biodegradasi merupakan cara yang efektif dalam mendegradasi bahan organik, terutama kadar lemak.
DEVELOPING MODUL OF MICROBIOLOGY SUBJECT THROUGH BIODEGRADATION BY USING THE POTENCIAL OF INDIGEN BACTERIA Fidiastuti, Hasminar Rachman; Rozhana, Kardiana Metha
Jurnal Pendidikan Biologi Indonesia Vol 2, No 2 (2016): JULY
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.259 KB) | DOI: 10.22219/jpbi.v2i2.3464

Abstract

Students in the study of science, need to pay attention to the nature of science. Science studied to develop the ability to think (minds on), skills (hands on) as well as the scientific attitude (heart on). Study Microbiology in Prodi TIP, University Tibhuwana Tunggadewi is about microorganisms. The writers conducted research related to environmental remediation efforts to harness the potential of bacteria indigen as an agent in the process of biodegradation. Research results are used as a reference in the preparation of the module. Through modules made based on the results of research, students are expected to develop 1) the ability to think that microorganisms can become agents in the process of rehabilitation of environmental pollution and can be isolated from the waste, develop 2) skills through practical biodegradation, and develop 3) attitudes scientific through concept which have been studied, in providing practical solutions to the problems of environmental pollution. The module aims to improve the efficiency and effectiveness of learning in the classroom either time, funds, facilities or personnel to obtain maximum results. Application of Microbiology learning which refers to the fusion module and science process skills through implementation of practical activities, is expected to be an alternative to creating a learning Microbiology which refers to aspects of the process, product and scientific attitude. The result is already done three stage preparation of teaching materials in the form of Microbiology module which refers to the model of research and development model of the 4-D (Thiagarajan, et al), includes define, design, and development. Results at the stage of defining the characteristics of students analysis, task analysis, analysis of the concept and analysis of learning objectives. At the design stage to do the design and materials development, followed by the development phase, ie measurement of the feasibility of the modules have been prepared. Results obtained to measure the feasibility of the module is the achievement level of 85% by the expert development of teaching materials, 87% by material experts and 84% by the practitioner. The average yield of legibility student questionnaire amounted to 86.55%. The results of this validation consulted in order to repair the module. Keywords: Biodegradation in vitro, tanning pollutants, indigen bacteri
ISOLASI DAN KARAKTERISASI BAKTERI INDIGEN PENGURAI LEMAK PADA LIMBAH CAIR BATIK TULUNGAGUNG Fidiastuti, Hasminar Rachman; Lathifah, Anis Samroatul; Amin, Mohamad; Utomo, Yudhi
Bioeksperimen: Jurnal Penelitian Biologi Vol 6, No 1: Maret 2020
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/bioeksperimen.v6i1.10430

Abstract

The native bacteria have a wide life habitat and have an important role as agents in the bioremediation process of waste. Batik as one of the products of Indonesian character, has become a contributor of liquid waste that can reduce water quality. Besides being rich in dyes, batik waste is also rich in fat content. The fat content in batik waste comes from the processing (coating the fabric with a layer of wax) and washing is done repeatedly. Fat has properties that are not soluble in water and is an organic material, which if high concentrations can reduce water quality. This study aims to isolate, identify, and measure the ability of indigenous bacteria to reduce fat content in liquid waste in vitro. The method used is experimental research. Isolation and culture using Busnall Hass media enriched with 1% olive oil, then proceed with a series of biochemical tests for the purpose of characterizing indigenous bacterial isolates. The results showed that Bacillus subtilis and Pseudomonas fluorescens have the potential to reduce the fat content of batik liquid waste.
Analisis Gaya Belajar terhadap Hasil Belajar Mahasiswa Angkatan Pertama Program Studi Pendidikan Biologi Universitas Tribhuwana Tunggadewi Lathifah, Anis Samrotul; Fidiastuti, Hasminar Rachman
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 15, No 1 (2018): Proceeding Biology Education Conference
Publisher : Universitas Sebelas Maret

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Abstract

The study program of Biology education in Unitri (University of Tribhuwana Tunggadewi, Malang) is a new study program, which has been operated for 1 year. Biology education has a vision that is a pioneer of biological educators who are based on cultured scientific as well as a center for the development of biology learning formed on multicultural and populist. To become a biology educator in accordance with the vision, the students are expected to understand the behavior or learning style to avoid the stress of learning that affects the continuity of the lecture. Students of Unitri who are mostly from Eastern Indonesia tend to be more vulnerable from learning stress since they have to adapt to different environments. Therefore, a research about student learning style analysis and its influence to learning result is conducted. De Porter and Hernacki divide learning styles into three types: visual, auditory, and kinesthetic learning styles. Based on the results of the learning style questionnaire given to 47 new students of biology education, 17% of students have visual learning style, 34% is auditory, and 49% is kinesthetic. To determine the effect on learning outcomes, the eta correlation test with significance value of learning result (score from the midterm test of cell biology course) is 0.086 bigger than α (0.05) which means there is no significant relationship between learning style of area with the score from the midterm test of cell biology course. This insignificant relationship can be influenced because students are new students who have not realized and understood their learning style. Hence, that special treatment is needed such as the existence of teaching materials or learning media that accommodate the learning style in order tp obtain significant results on the learning outcomes.
Co-Authors Endang Suarsini Lathifah, Anis Samroatul Lathifah, Anis Samrotul Mohamad Amin Rozhana, Kardiana Metha Utomo, Yudhi