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Pengaruh Rasio Crude Enzim Selulase Trichoderma reesei dan Aspergillus niger terhadap Kadar Gula dan Bioetanol Fermentasi Kulit Kacang Tanah (Arachis hypogaea L.) Menggunakan Zymomonas mobilis Trianik Widyaningrum; A’isyah Arroobi’atu Rizqiyah
Bioscientist : Jurnal Ilmiah Biologi Vol 11, No 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9487

The need for fuel oil in Indonesia is increasing along with the increase in the number of people's consumption in the fields of transportation, industry, and economy. While the source of petroleum fuel in Indonesia is running low. Therefore, it is necessary to utilize alternative energy, namely bioethanol. Bioethanol can be produced from organic waste that contains high cellulose, one of which is peanut shells. This study aims to determine the effect of the ratio of crude cellulase enzyme Trichoderma reesei and Aspergillus niger on sugar and ethanol content of peanut shell fermentation using Zymomonas mobilis, and to determine the ratio of crude cellulase enzyme that produces the highest sugar and ethanol content of peanut shell fermentation using Z. mobilis. This research is an experimental study with independent variables, namely the ratio of crude cellulase enzyme T. reesei : A. niger (0:0), (1:0), (0:1), (1:1), (1:2), (2:1), (1:3), and (3:1) and the dependent variable of sugar and biethanol content. Data analysis of experimental research results using ANOVA and DMRT test. The addition of crude cellulase enzyme from T. reesei and A. niger affects the sugar content and bioethanol from peanut shell fermentation. The ratio of crude cellulase enzyme from T. reesei and A. niger that produces the highest sugar content is in the treatment P5 ratio of crude enzyme T. reesei: A. niger (2:1) which is 0.14 g/mL and the highest ethanol content from groundnut shell fermentation is in the treatment of P8 crude enzyme ratio of T. reesei : A. niger (1:3) which is 2.23%.

Preparation of student activity sheets results of research on the effect of crude bacillus subtilis enzyme concentration on sugar and ethanol content from sugarcane bagasse fermentation using zymomonas mobilis as biology teaching materials Widyaningrum, Trianik; Pertiwi, Hana Eka; Utami, Listiatie Budi
JURNAL BIOEDUKATIKA Vol. 12 No. 3 (2024)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/bioedukatika.v12i3.30697

Student Activity Sheets (SAS) are teaching materials that are systematically and interestingly arranged in the learning process. In this case, the results of the study are used as material for compiling SAS. The study aims to determine the potential of SAS teaching materials from the results of the study on the effect of crude Bacillus subtilis enzyme concentration on sugar and ethanol content from bagasse fermentation using Zymomonas mobilis , the effect of crude Bacillus subtilis enzyme concentration on sugar and ethanol content from bagasse fermentation using Zymomonas mobilis , and the concentration of crude Bacillus subtilis enzyme that has the most influence on sugar and ethanol content from bagasse fermentation using Zymomonas mobilis . The research was conducted in 2 stages, the first was an experimental study conducted using a Completely Randomized Design (CRD) with the independent variable being the concentration of crude Bacillus subtilis enzyme, namely 0; 2.5; 5; 7.5; 10; 12.5; 15; 17.5% and the dependent variable being the sugar and ethanol content of the fermented sugarcane bagasse using Zymomonas mobilis . Measurement of sugar content used the DNS method, while measurement of ethanol content used an alcohol meter. Second, the preparation of SAS used the ADDIE development model which was modified to ADDE. The data from the experimental research results were analyzed using the One Way ANOVA test, while the preparation of SAS was analyzed using quantitative descriptions.. The results of the study showed that the SAS results of the study on the sugar and ethanol content of the results of the study of sugarcane bagasse using Zymomonas mobilis were categorized as very good to be used as teaching materials for biotechnology materials. The concentration of crude Bacillus subtilis enzyme that had the most influence on the sugar and ethanol content of the fermentation results of sugarcane bagasse using Zymomonas mobilis was in treatment 4 with a concentration of 10%, namely 0.67 g/mL and the highest ethanol content, namely 1.89%.

Analysis of Biology Learning Difficulties in Virus Material for Grade X Students at Muhammadiyah 3 Yogyakarta Widyaningrum, Trianik; Anggaraini , Desi
JURNAL BIOEDUKATIKA Vol. 11 No. 3 (2023)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/bioedukatika.v11i3.30912

Learning is a basic process of human development. By learning, humans make changes so that their behavior develops. Learning is not just an experience, but learning is a process and not a result. In learning activities at school, educators are faced with a number of very diverse student characteristics. The learning difficulties found at SMA Muhammadiyah 3 Yogyakarta were found to be the average class score in biology subjects was still below the KKM. The purpose of this study was to determine the internal and external factors that cause students to experience learning difficulties and to determine the level of difficulty in learning biology in understanding virus material. This type of research is descriptive quantitative. The population used in this study was 152 with a sample of 79 students. This research was conducted on June 6-7, 2024. This study used a cluster sampling technique because the data sources used were very broad. Data collection techniques used questionnaires and interviews. Data collection instruments used questionnaires and interview guidelines. The data analysis technique for this study used descriptive quantitative analysis.The results of the study showed that the internal factors that caused students in class X (E2, E4 and E4) to have difficulty learning biology on the virus material were physiological factors in the moderate category, with a percentage of 48%, 49.11% and 50%. External factors that caused students in class X-E2 to have difficulty learning biology on the virus material were school factors with a percentage of 74% in the high category, for class X-E4 were school factors with a percentage of 75% in the high category and for class X-E5 were family factors with a percentage of 76.78% in the high category. The biology sub-materials that were considered difficult on viruses were types of viruses and the life cycle of viruses

Android-based STEM-AR and its contribution to elementary school students' environmental literacy Nasaruddin, Datuk Muhammad; Maryani, Ika; Sanjun, Cindy Joe; Sulisworo, Dwi; Widyaningrum, Trianik; Santosa, Achadi Budi
International Journal of Education and Learning Vol 7, No 1 (2025): April
Publisher : Association for Scientific Computing Electrical and Engineering(ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/ijele.v7i1.1818

This study is motivated by the low environmental literacy and academic achievement of elementary school students. The study aims to measure the effect of Android-based STEM-AR on students' environmental literacy. A quantitative research method with a One Group Pretest-Posttest Design was used. A total of 31 fifth-grade elementary school students in Yogyakarta, Indonesia, were randomly selected from nine public schools. The research instruments included a lesson plan and an Augmented Reality (AR) medium accessible via Android smartphones. STEM was used as a reference for structuring subject matter. The treatment was conducted four times, each lasting 70 minutes. Students' environmental literacy was measured before and after the treatment using a validated multiple-choice test. Data analysis employed a t-test with a 5% significance level. The Paired Sample Test results showed a sig(2-tailed) value of 0.001 0.05, which led to the rejection of the null hypothesis and acceptance of the alternative hypothesis. This study contributes to proving that Android-based STEM-AR positively influences elementary school students' environmental literacy.

Pengaruh Rasio Crude Enzim Selulase Trichoderma reesei dan Aspergillus niger terhadap Kadar Gula dan Bioetanol Fermentasi Kulit Kacang Tanah (Arachis hypogaea L.) Menggunakan Zymomonas mobilis Widyaningrum, Trianik; Rizqiyah, Aâ€™isyah Arroobiâ€™atu
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9487

The need for fuel oil in Indonesia is increasing along with the increase in the number of people's consumption in the fields of transportation, industry, and economy. While the source of petroleum fuel in Indonesia is running low. Therefore, it is necessary to utilize alternative energy, namely bioethanol. Bioethanol can be produced from organic waste that contains high cellulose, one of which is peanut shells. This study aims to determine the effect of the ratio of crude cellulase enzyme Trichoderma reesei and Aspergillus niger on sugar and ethanol content of peanut shell fermentation using Zymomonas mobilis, and to determine the ratio of crude cellulase enzyme that produces the highest sugar and ethanol content of peanut shell fermentation using Z. mobilis. This research is an experimental study with independent variables, namely the ratio of crude cellulase enzyme T. reesei : A. niger (0:0), (1:0), (0:1), (1:1), (1:2), (2:1), (1:3), and (3:1) and the dependent variable of sugar and biethanol content. Data analysis of experimental research results using ANOVA and DMRT test. The addition of crude cellulase enzyme from T. reesei and A. niger affects the sugar content and bioethanol from peanut shell fermentation. The ratio of crude cellulase enzyme from T. reesei and A. niger that produces the highest sugar content is in the treatment P5 ratio of crude enzyme T. reesei: A. niger (2:1) which is 0.14 g/mL and the highest ethanol content from groundnut shell fermentation is in the treatment of P8 crude enzyme ratio of T. reesei : A. niger (1:3) which is 2.23%.

Pengaruh Konsentrasi Crude Enzim Bacillus subtilis terhadap Kadar Gula dan Bioetanol Hasil Fermentasi Kulit Singkong Menggunakan Zymomonas mobilis Nurusman, Arief Abdillah; Widyaningrum, Trianik; Nisa, Rifda Khairun; Utami, Listiatie Budi
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9491

Bioethanol is an environmentally friendly and renewable alternative fuel. The use of alternative fuels is necessary because petroleum fuels make a major contribution to increasing greenhouse gas concentrations, especially CO2. Bioethanol can be obtained from materials containing carbohydrates such as cassava peel which has a high carbohydrate content, namely 4.55%. The aim of this research was to see the effect of the crude enzyme concentration of Bacillus subtilis on the results of sugar and bioethanol content of cassava peel fermentation with Zymomonas mobilis and to find out the crude enzyme concentration that had the greatest influence. This research is an experimental study with the independent variable, namely the concentration of crude cellulase enzyme B. subtilis with concentrations of 0%, 2.5%, 5%, 7.5%, 10%, 12.5%, 15%, and 17.5% , and the dependent variables are sugar content from hydrolysis and bioethanol content from the fermentation process. The data obtained were analyzed using the ANOVA test and Duncan's test. The results of research on the effect of crude Bacillus subtilis cellulase enzyme concentrations of 8 concentrations have an influence on the amount of sugar and bioethanol produced from fermentation of cassava peel with Zymomonas mobilis. Crude Bacillus subtilis cellulase enzyme with a concentration of 17.5% had the greatest influence on sugar and bioethanol levels with a sugar content of 0.37% and a bioethanol content of 1.67%.

Utilization of the heat from combustion of water for the heating process in water desalination Permadi, Adi; Syamsuddin, Arief; Widyaningrum, Trianik; Satar, Ibdal; Suharto, Totok Eka; Pitoyo, Joko
International Journal of Advances in Applied Sciences Vol 13, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i1.pp134-140

The volume of municipal waste has become a national problem so far, so a solution is needed to reduce the waste problem. One solution to reduce the volume of municipal waste is to burn waste. However, the combustion needs to be designed to take advantage of the heat generated by combustion. In this study, the process of burning waste with various types of waste materials was carried out. The heat of burning waste is used to evaporate 1 liter of seawater and the seawater vapor is cooled to produce distilled water. The volume of distilled water and the precipitated salt were weighed. The results of the research from the variation of 6 types of waste materials obtained that the type of clothing waste material gave the fastest time, which was 43.75 minutes, the amount of distilled water was 931 ml, and salt deposited as much as 30 grams. The test results on distilled water showed that almost all parameters met the requirements of drinking water and obtained a salt content of 84%. Further processing by adjusting the hardness is needed to process distilled water into clean water and the addition of iodine can be considered to produce iodized salt.

Penyuluhan sebagai Strategi Peningkatan Pengetahuan Masyarakat tentang Dampak Sampah Plastik dan Pengelolaannya di Desa Panjangrejo Bantul Yogyakarta Satar, Ibdal; Syamsuddin, Arief; Suharto, Totok Eka; Permadi, Adi; Widyaningrum, Trianik; Khakim, Mufti; Baswara, Ahmad Raditya Cahya; Setyanto, Barry Nur
Pelita: Jurnal Pengabdian kepada Masyarakat Vol. 3 No. 3 (2023): Pelita: Jurnal Pengabdian kepada Masyarakat
Publisher : Perkumpulan Kualitama Edukatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51651/pjpm.v3i3.352

Plastic waste has become a significant problem of environmental pollution in recent decades. The nature of plastic waste is complicated to decompose; it has worsened the environmental situation, especially if it is not taken seriously immediately. One approach that can be taken to overcome this problem is to provide counseling to the public so that they do not dispose of plastic waste carelessly. The community service program is a forum for academics to participate and provide counseling about the management of plastic waste. The purpose of this community service program is to counsel the Panjangrejo community about how to manage plastic waste properly. This counseling program began with discussions with the Panjangrejo sub-district officials and related parties, then continued with planning the timing of the extension. Residents and community elements are fully involved, so this program can run smoothly. The counseling program was carried out in three villages, namely the villages of Semampir, Gunung Puyuh, and Krapyak Wetan, and this program was held at night from 20.00 WIB to 22.00 WIB. The outreach results showed that people's knowledge about the dangers of plastic waste and how to manage it could be significantly improved (p < 0.05). In general, this extension program successfully increased respondents' knowledge from "not knowing" to "knowing better" about the dangers and how to manage plastic waste.

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