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All Journal International Journal of Evaluation and Research in Education (IJERE) Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Pendidikan Sains The Journal of Experimental Life Sciences (JELS) El-Hayah : Jurnal Biologi Jurnal Pendidikan Biologi Indonesia Bioeksperimen: Jurnal Penelitian Biologi Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Jurnal Bioedukatika ELSE (Elementary School Education Journal) : Jurnal Pendidikan dan Pembelajaran Sekolah Dasar Saintifik : Jurnal Matematika, Sains, dan Pembelajarannya International Journal for Educational and Vocational Studies Berkala Penelitian Hayati Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) Jurnal MIPA dan Pembelajarannya Jurnal Ilmu Hayat
Endang Suarsini
Universitas Negeri Malang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Social Sciences Other

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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.
Test of fungi number of Syzygium polyanthum bark simplisia for traditional medicine as disseminate material to the low economic communities in Malang Restiani, Restu Asri; Suarsini, Endang; Indriwati, Sri Endah
Jurnal Pendidikan Biologi Indonesia Vol 2, No 3 (2016): NOVEMBER
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1167.551 KB) | DOI: 10.22219/jpbi.v2i3.3877

Abstract

Penggunaan obat tradisional sangat disarankan oleh lembaga kesehatan dunia. Obat tradisional memiliki kegunaan yang efektif, tingkat keamanan yang tinggi, serta memiliki nilai ekonomi. Tujuan dari penelitian ini adalah menentukan uji kelayakan simplisia kulit batang salam (Syzygium polyanthum) berdasarkan angka kapang. Kemudian disosialisasikan kepada masyarakat ekonomi rendah di kabupaten Malang, sehingga dapat digunakan untuk menambah pengetahuan tentang potensi kulit batang salam sebagai obat tradisonal. Jenis penelitian merupakan penelitian deskripstif laboratorik dengan rancangan deskriptif  kualitatif. Sampel simplisia dilarutkan dalam 90 ml larutan air pepton 0,1% sehingga diperoleh tingkat pengenceran 10-1. Larutan diencerkan secara bertahap, sehingga diperoleh tingkat pengeneran 10-2, 10-3, 10-4, 10-5, 10-6. kemudian dilakukan inokulasi masing-maisng larutan sampel tersebut sebanyak 0,1 ml pada medim Potato Dextrose Agar (PDA), lalu diinokulasikan pada suhu 250C-270C selama 3 x 24 jam. Perlakuan dilakukan dalam 6 ulangan, selanjutnya dilakukan penentuan koloni angka kapang. Hasil perhitungan koloni angka kapang dirujuk pada ketentuan batas minimal cemaran kapang menurut Badan Pengawas Obat dan Makanan (BPOM) 2014 ialah ≤ 104 koloni/ gram. Jadi hasil perhitungan pada simplisia kulit batang salam adalah 0,3 x 101 berarti simplisia kulit batang salam memenuhi syarat dari ketetapan BPOM 2014. Selanjutnya dilakukan sosialisasi kepada masyarakat ekonomi rendah di kabupaten Malang.
Keterampilan Berpikir Kritis Mahasiswa STKIP Yapim Maros Pada Mata Kuliah Evolusi Jirana, Jirana; Amin, Mohammad; Suarsini, Endang; Lukiati, Betty
Jurnal Saintifik Vol 5, No 1 (2019): Volume 5 Nomor 1
Publisher : Fakultas MIPA UNSULBAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/saintifik.v5i1.192

Abstract

Mata kuliah evolusi merupakan salah satu mata kuliah yang dianggap sulit oleh mahasiswa, sulitnya pemahaman mahasiswa terhadap konsep evolusi disebabkan oleh beberapa masalah sehingga perlu dilakukan beberapa observasi terhadap komponen-komponen dalam proses pembelajaran Evolusi. Penelitian ini bertujuan untuk menganalisis Keterampilan Berpikir mahasiswa terhadap Mata Kuliah Evolusi di Universitas Sulawesi Barat Penelitian ini menggunakan metode survey dengan cara penyebaran angket dan pemberian tes untuk mengetahui pengetahuan mahasiswa tentang konsep evolusi. Berdasarkan survey yang dilakukan terhadap mahasiswa STKIP Yapim Maros Program Pendidikan Biologi dengan 36 orang responden menunjukkan bahwa Keterampilan Berpikir Kritis Mahasiswa STKIP Yapim Maros. Berdasarkan hasil analisis yang didapatkan, maka dapat disimpulkan bahwa keterampilan berpikir mahasiswa biologi STKIP Yapim Maros terhadap mata kuliah Evolusi masih rendah. Oleh karena itu perlu dilakukanpembenahan dalam penelitian lanjutan.Kata kunci: Berpikir Kritis, Evolusi, Pembelajaran
The Problem-Based Learning Model and Students' Generic Skills of the Faculty of Teachers Training and Education the Universitas Siliwangi Tasikmalaya on the Animal Structure Course Mustofa, Romy Faisal; Corebima, A.D.; Suarsini, Endang; Saptasari, Murni
International Journal for Educational and Vocational Studies Vol 1, No 1 (2019): May 2019
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/ijevs.v1i1.1466

Abstract

The aims of this study are to describe the learning process in animal structure courses and learning outcomes obtained by students of Biology Education Study Program, Teachers Training and Education Faculty, Siliwangi University Tasikmalaya after attending lectures. The research method used is survey data collection using a questionnaire. As many as 60 students who have attended and graduated in animal structure lectures in the 4th semester of the 2014/2015 academic year were used as research samples. Samples were taken using simple random sampling technique from a population of 90 students. Then the data obtained is processed using descriptive statistics. The results of the study show that students have an interest in animal structure courses, especially in practical activities. The implementation of learning in animal structure courses has not been carried out optimally. The indication is from the non-socialization of the learning model used by lecturers which has an impact on various generic skills that are not maximally trained and developed.
THE POTENTIAL OF INDIGENOUS BACTERIA FOR REMOVING CADMIUM FROM INDUSTRIAL WASTEWATER IN LAWANG, EAST JAVA Pambudiono, Agung; Suarsini, Endang; Amin, Mohamad
Journal of Tropical Life Science Vol 8, No 1 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (688.873 KB) | DOI: 10.11594/jtls.08.01.11

Abstract

Heavy metals have been used in various areas around the world especially in the industrial sector. Heavy metals contamination is very dangerous for ecosystem because of its toxicity for some organisms. Cadmium (Cd) is a dangerous metal pollutant that can cause remarkable diverse of toxic effects, in particular for humans and animals. The use of bacteria as bioremediation agents has been widely studied because more efficient, less cost, and environmentally friendly strategy. This present study aimed to isolate and identify Cd-resistant bacteria from the industrial disposal site. Wastewater samples were collected from disposal site of agar flour industry in Lawang Malang, East Java. The collected wastewater effluent was analyzed for physicochemical properties. Isolation of Cd-resistant bacteria was carried out using serial dilution. Bacterial isolates were observed and tested for their effects on the content of Cd. The content of Cd was tested daily using Atomic Absorption Spectroscopy (AAS) for seven consecutive days. Data was analyzed using one-way ANOVA (p < 0.05) and Tukey test. Characterization of potential bacterium was performed using bacterial identification kit. Four bacteria isolates have been successfully isolated from the wastewater sample. There was a statistically significant difference between groups as determined by one-way ANOVA (F = 1229.62, p = 0.00). A Tukey post hoc test revealed that all conditions are significantly different from each other. The content of Cd in wastewater sample was statistically significantly lower after taking the A isolate (3.39 mg/L, p = 0.00), B Isolate (1.47 mg/L, p = 0.00), C Isolate (1.15 mg/L, p = 0.00), and D isolate (1.95 mg/L, p = 0.00) compared to the control treatment (5.11 mg/L, p = 0.00). Two of the most potential isolates identified as Pseudomonas flourescens (C isolate) and Enterobacter agglomerans (B isolate).
EKSPLORASI KEBUTUHAN BAHAN AJAR PADA MATAKULIAH BIOPROSPEKSI Serena, Nelda Anasthasia; Suarsini, Endang; Lukiati, Betty
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 5, No 4: APRIL 2020
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v5i4.13226

Abstract

Abstract: This study aims to determine the necessity of teaching materials in Bioprospection subject. This type of descriptive qualitative research with observation, questionnaire and test data collection techniques. Necessity analysis results 92% students had difficulty understanding Bioprospect material because the concept is difficult to apply (48%), complex material (24%), lack of teaching materials (20%). Students need teaching materials that are flexible, easy to understand, reliable, practical, and easy access. Preliminary test show cognitive learning outcomes score is 52, 4 (low) and critical thinking skills score is 48.2% (low). The conclusion is needed a module by research based on Problem-Based Learning that can improve critical thinking and cognitive learning outcomes of students in the Bioprospection subject.Abstrak: Penelitian bertujuan mengetahui kebutuhan bahan ajar pada matakuliah Bioprospeksi. Jenis penelitian deskriptif kualitatif dengan teknik pengambilan data observasi, angket, dan tes. Hasil analisis kebutuhan, 92% mahasiswa kesulitan memahami Bioprospeksi karena sulit mengaplikasikan konsep (48%), materi kompleks (24%), kurangnya bahan ajar (20%). Mahasiswa membutuhkan bahan ajar yang fleksibel, mudah dipahami, terpercaya, praktis, dan akses informasinya mudah. Hasil tes awal menunjukkan hasil belajar kognitif dengan rerata 52, 4 (rendah) dan keterampilan berpikir kritis mahasiswa sebesar 48,2% (rendah).  Simpulan penelitian dibutuhkan modul Problem Based Learning berdasarkan hasil penelitian untuk meningkatkan keterampilan berpikir kritis dan hasil belajar kognitif mahasiswa pada matakuliah Bioprospeksi.
Analysis of Coliform Bacteria Contamination in Drinking Water Sources in Malang City Syamsussabri, Muhamad; Ningtyas, Riza Nurhermi; Najah, Amalia Ainun; Fahmi, M. Saiful; Suarsini, Endang
El-Hayah : Jurnal Biologi Vol 7, No 1 (2018): EL-HAYAH (VOL 7, NO 1 September 2018)
Publisher : Department of Biology Science and Technology Faculty UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v7i1.7244

Abstract

This study aims to determine the contamination of coliform bacteria in drinking water sources of residents in Malang City. Type of this research is explorative descriptive research. The study population was all drinking water sources of residents throughout Malang City, while the research sample was 15 residents wells in five subdistricts of Malang City with each sample taken three sample points. The samples were tested using 3M petrifilm E. coli/coliform count plate. The results showed that all the samples studied were contaminated with coliform bacteria with the highest percentage of 23.01% for E. coli bacteria contamination and 15.41% for total coliform bacterial contamination with an average of bacterial colonies 200 colonies.
Isolation and Identification of Cellulose Degrading Bacteria from Banana Peel Compost P., Yendania Grevitara; F., Badriyatur Rahma; P., Hellen Septirangga; Y., Irma Dahlia; Suarsini, Endang
El-Hayah : Jurnal Biologi Vol 7, No 1 (2018): EL-HAYAH (VOL 7, NO 1 September 2018)
Publisher : Department of Biology Science and Technology Faculty UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v7i1.7241

Abstract

Cellulolytic bacteria are bacteria that have the ability to hydrolyze cellulose complexes into smaller oligosaccharides and eventually become glucose. Glucose is used as a carbon and energy source for bacterial growth. This study was conducted to isolate the cellulose degrading bacteria from banana peel compost that produce cellulose enzymes based on the clear zone that visible around the colony. The cellulolytic activity was determined by the ability of bacteria to hydrolyze the Carboxymethyl Cellulose (CMC) substrate. Determination of cellulolytic activity is known based on cellulolytic index calculation, the diameter total minus the diameter of the colony and divided by the diameter of the colony. The result of five bacterial isolates was found but only one bacterium had the potential to be a cellulose degradation. Based on the Microbact Gram-Negative Identification System, the bacterium is Burkholderia cepacia. These bacteria have an important role in nature as decomposers of various complex compounds, such as cellulose, hemicellulose, lignin, and pectin.
Analisis Kelayakan Modul Bioethanol berbasis Penelitian Eucheuma Cottonii sebagai Bahan Dasar Bioethanol M. Saiful Fahmi, M. Saiful Fahmi; Lukiati, Betty; Suarsini, Endang
Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan Vol 6, No 5: MEI 2021
Publisher : Graduate School of Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/jptpp.v6i5.14591

Abstract

Abstract: This research is a quantitative descriptive study. This study aims to test the feasibility of the module bioethanol based on  Eucheuma cottonii a basis for bioethanol including  module design validity test by expert module expert lecturers, the material validity test by expert lecturers in bioethanol, the practicality of the module by lecturers at the Muhammadiyah University of Surakarta, legibility by 20 students at the Muhammadiyah University of Surakarta. The data collection method used is the questionnaire and then analyzed on a percentage scale. The module feasibility test results show that this module is very feasible with a score of 93.18% and it can be concluded that this module is suitable for useAbstrak: Penelitian ini merupakan penelitian deskriptif kuantitaif. Penelitian ini bertujuan untuk mengujii kelayakan modul bioethanol berbasis penelitian Eucheuma cottonii sebagai bahan dasar bioethanol meliputi uji validitas desain modul oleh ahli dosen ahli modul, uji validitas materi oleh dosen ahli dibidang bioetanol, kepraktisan modul oleh dosen di Universitas Muhammadiyah Surakarta, keterbacaan oleh 18 mahasiswa di Universitas Muhammadiyah Surakarta. Metode pengambilan data yang digunakan yaitu kuisioner kemudian dianalisi dengan skala persentase. Hasil tes kelayakan modul menunjukkan modul ini sangat layak dengan skor 93,18% dan dapat disimpulkan modul ini layak untuk digunakan.
Pre-service biology teacher’s perception on local environment problems as contextual learning resources Ahmad Yani; Mohamad Amin; Fatchur Rohman; Endang Suarsini; Muhammad Rijal
International Journal of Evaluation and Research in Education (IJERE) Vol 10, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijere.v10i3.21091

Abstract

A survey and exploratory study were conducted to analyze Lake Tempe as a resource for contextual learning (CTL). The first phase of the study included exploring the lake’s potential through interviews with the people who live in the lake’s coastal region. Quadrat transects were done to identify aquatic plants around the lake. A feasibility analysis was conducted to see the lake’s potential as a learning resource. Field data were collected and compared to the environmental biology (EB) curriculum, responses, and learning outcome. The data were analyzed descriptively and tested using a paired-sample t-test. The results showed differences in the three stations’ physicochemical parameters and decreased quality of the water. It was found that anthropogenic activity had a significant contribution to the lake’s pollution. Nine species of six aquatic plant families were found in the lake. The survey revealed that the lake was feasible as a learning resource with criteria easy to access, safety, time efficiency, costs, and the material's suitability for EB courses. The t-test showed a difference in the students’ scores between before and after exploration practices. These findings suggest that Lake Tempe can serve as a resource for CTL in EB courses.
Co-Authors A.D. Corebima, A.D. Abda Abda Adi, Widi Cahya Agung Pambudiono Agung Pambudiono Agung Pambudiono, Agung Ahmad Yani Anis Noor Aini Anton Setia Budi Arini Zahrotun Nasichah Atiqa Ulfa Betty Lukiati Chandra Kirana Chandra Kirana Chandra Kirana Dwi Listyorini Dyah Afiat Mardikaningtyas F., Badriyatur Rahma Fahmi, M. Saiful Fatchur Rohman Hadi Suwono Hasminar Rachman Fidiastuti Hasminar Rachman Fidiastuti, Hasminar Rachman Hera Adiwijaya Herawati Susilo Ibrohim Ibrohim, I Jeni Jeni Jirana, Jirana Kartika Juliana Kartika Juliana, Kartika Khair, Baiq Niswatul Lina Listiana Lutfin Andyana Rehusisma M. Amin M. Saiful Fahmi M. Saiful Fahmi, M. Saiful Fahmi Martin Artiyono Pratama Maya Firdausi Prayudhani Mimien Henie Irawati Mohamad Amin Mohamad Amin Mohamad Amin Mohamad Amin Mohamad Amin Mohammad Amin Mohammad Amin Mohammad Amin Mohammad Wildan Habibi Mohammad Wildan Habibi, Mohammad Wildan Muhammad Rijal Muhammad Saefi Muhammad Syamsussabri Murni Sapta Sari Mustofa, Romy Faisal Najah, Amalia Ainun Nanda Hilda Khikmawati Nelda Anasthasia Serena Ningtyas, Riza Nurhermi P., Hellen Septirangga P., Yendania Grevitara Pratama, Martin Artiyono Prayoga Rendra Vendiktama Restu Asri Restiani Restu Asri Restiani Rinu Bhakti Dewantara Riza Nurhermi Ningtyas Rizka Permatasari Rochmatul Ummah Sa'diyah, Wasiatus Saparuddin Saparuddin Sembiring, Rinawati Septiana Wulandari Septiana Wulandari Serena, Nelda Anasthasia Siti Imroatul Maslikah Sitoresmi Prabaningtyas Sri Endah Indriwati Sri Rahayu Lestari Tahir, Jirana Ulfa, Atiqa Umie Lestari Ummi Nur Afinni Dwi Jayanti Utami Sri Hastuti Wahidah Qomariyah Wasiatus Sa’diyah Y., Irma Dahlia Yahmi Ira Setyaningrum Yakobus Bustami Yanis Kurnia Basitoh