BIOEDUSAINS:Jurnal Pendidikan Biologi dan Sains

Penggunaan Berbagai Jenis Kitosan Sebagai Edible Coating untuk Menjaga Kualitas Fisik Cabai (Capsicum annuum L.) Selama Penyimpanan pada Suhu Berbeda

2024-08-13T15:17:30+00:00

This research aims to determine the effect of chitosan, the effect of storage temperature, and the effect of the combination of chitosan and storage temperature on the physical quality of chilies. This research used a Completely Randomized Factorial Design method, the first factor was chili without chitosan coating (K0), and chili with chitosan coating (K1) = shrimp shell, (K2) = crab shell, (K3) = fish scales using the same concentration, namely 9%. The second factor is storage temperature (T1) = low temperature (10°C) and (T2) = room temperature (26-32°C). The changes observed were weight loss, water content, color measurements, as well as texture and aroma based on organoleptic tests (hedonic tests). Data analysis used ANOVA at the 5% level and BNJ follow-up test at the 5% level. The results showed that shrimp chitosan (K1) caused a low reduction in weight loss, namely (0.96%) and could maintain the texture of chili (8.74). Crab chitosan (K2) can maintain the chili aroma value (8.70). Fish scale chitosan (K3) can maintain water content (1.66%) and maintain chili color. Storage at a temperature of 10°C (T1) has an effect on weight loss (0.15%), maintaining water content (2.00), maintaining chili color (L=87.37; a=155.70; b=124.95) and can maintain texture value (12.26) and aroma (11.99). The best treatment combination for weight loss (0.04%), water content (0.74%) and chili color (L=30.00; a=53.00; b=43.13) is fish scale chitosan and temperature 10 °C (K3T1). Meanwhile, the best treatment combination for texture was shrimp chitosan and a temperature of 10°C (K1T1) 4.28 and aroma was crab chitosan and a temperature of 10°C (K2T1) 4.16.

Key words: Chili, Chitosan, Temperature.

Pengaruh Game Based Learning Berbasis Dimensi Kolaborasi 21CLD Terhadap Kompetensi Kolaborasi Siswa SMA

2024-08-15T14:47:32+00:00

This research aims to see the influence of game-based learning on the 21CLD dimension on high school students' collaboration competence on the concept of movement systems. The study employed a quasi-experimental method, utilizing a Pretest-Posttest Nonequivalent Control Group Design. The sample for this research was 70 students from SMAN 1 Cikembar class XI. The instruments used were collaboration competency questionnaires, student collaboration activity observation sheets, and student response questionnaires. The research results showed that the N-Gain value of collaboration competence in the experimental class was better than the control class with a value of 0.62 in the medium category and 0.29 in the low category. Judging from the hypothesis test, it is significantly different with a sig (2-tailed) value of <0.001 so that the hypothesis H₀ is not accepted while H₁ is accepted. The conclusion of this research states that the game-based learning model based on the 21CLD collaboration dimension has an effect on students' collaboration competence.

Keywords: Game Based Learning, Collaboration Competencies, 21CLD

Efektivitas Variasi Ukuran Botol Media Tanam Terhadap Pertumbuhan Planlet Anggrek Phalaenopsis amabilis L.

2024-08-21T23:20:15+00:00

This study aims to determine the effect of variations in media bottle size on the growth of Phalaenopsis amabilis L. orchid plantlets. This study used a Completely Randomized Design (CRD) with variations in one factor, namely the size of the media bottle (P1: 250 ml, P2: 500 ml, and P3: 750 ml). Each treatment variation was repeated four times. The results of data analysis in this study used the SPSS 27 program. The data was tested for normality and homogeneity, then continued with the ANOVA (Analysis of Variance) test at the 5% level. If there is a significant influence then proceed with the Least Significant Difference (BNT) test. The results of the research showed that there was an effect of using variations in the size of the 750 ml bottle on the parameters of root length and number of roots. In conclusion, variations in the size of the planting medium bottle can influence the growth of Phalaenopsis amabilis L. orchid plantlets including root length and number of roots.

Keywords: Tissue Culture, Phalaenopsis amabilis L., Bottle Size

Aktivitas Antibakteri Ekstrak Etanol Daun Sungkai (Peronema canescens Jack) Terhadap 2 Jenis Bakteri Penyebab Jerawat dengan KLT-Bioautografi

2024-09-17T06:12:54+00:00

This research aims to examine the antibacterial activity of an ethanol extract of old sungkai leaves (DST) (Peronema canescens Jack) against the test bacteria Staphylococcus aureus and Staphylococcus epidermidis using the TLC-bioautography method. The concentration of the test extract was 15%, with the amount of extract spotting being 25 μL, and the eluent used was chloroform p.a. The results showed that the TLC chromatogram of DST ethanol extract showed 10 dense spots/spots, 6 spots of which could inhibit the growth of S. aureus (spots no. 2-7), and 7 of them (spots no. 1-7) could inhibit the growth of S. epidermidis. Spots with Rf = 0.06; 0.12; 0.27; 0.35 (spots no. 2-5) showed a larger clear zone than spots with Rf = 0.47 and 0.64 (spots no. 6-7) in inhibiting S. aureus. Meanwhile, spot number 1 (Rf = 0) showed the clearest zone among the other 6 spots in inhibiting S. epidermidis. In conclusion, the ethanol extract of old sungkai leaves (DST) has strong antibacterial properties against S. aureus and S. epidermidis. The results of this research have the potential to be developed to obtain potential candidate compounds as antibacterials from sungkai leaves.

Keywords: Antibacterial, TLC-bioautography, Peronema canescens Jack, Staphylococcus aureus, Staphylococcus epidermidis

Pengembangan Media Pembelajaran dengan Pemanfaatan Aplikasi Wondershare Quizcreator

2024-09-25T15:14:04+00:00

The purpose of this research is to develop assessment media for learning using the Wondershare QuizCreator application in the Biology subject for Class XI Science at SMA Negeri 1 Cempaka OKU Timur. The research method used is the procedural engineering method employing survey-type data collection techniques. The research results show that media experts rated this product 85.3 in the "good" category. Design experts gave it a score of 82, also in the "good" category, while material experts rated it 82.1, again in the "good" category. Personal trials of the product by three respondents from the XI IPA class in the second semester yielded a score of 81.5 points, categorized as "good." A small group experiment with six respondents resulted in a score of 83.5, also categorized as "good." Subsequently, a large-scale test was conducted, and 26 respondents received a score of 81.7 points, categorized as "good." In conclusion, this media product for learning assessment is valid and suitable for use in the real world.

Keywords: Biology, Evaluation, Media, Development

Dari Nilai Budaya Lokal ke Ruang Kelas: Tinjauan Sistematis tentang Nilai Budaya Lokal yang Dimanfaatkan dalam Pembelajaran Berbasis Etnosains

2024-10-01T01:57:01+00:00

This research aims to provide a comprehensive picture of the current state of ethnoscience integration in science learning and analyze the impact of this integration on students' understanding and appreciation of science, and explore the challenges and opportunities presented by this approach. This article was prepared based on the results of a systematic review of 16 articles published in 6 SCOPUS indexed journals and 10 SINTA accredited journals from 2020-2023. The results of the research show, 4 articles highlight Sasak cultural values, Dayak cultural values, local values of ulos weaving, local wisdom of the Sorong West Papua community, Badui traditional cultural values, Laot customary law, Congklak traditional games, Bebentangan traditional games, Banjar traditional language, local wisdom of syafaral anam, and cultural values of the Bugis tribe.

Keywords: Ethnoscience Integration, Local Cultural Values

Masker Gel Ekstrak Bunga Telang (Clitoria ternate L.) sebagai Antibakteri Staphylococcus aureus dan Staphylococcus epidermidis

2024-10-20T02:22:49+00:00

The aim of this research was to determine the effect of the antibacterial activity of butterfly pea flower extract and butterfly pea flower extract gel mask on Staphylococcus aureus bacteria and Staphylococcus epidermidis bacteria, as well as to determine the effective concentration of butterfly pea flower extract in inhibiting the growth of Staphylococcus aureus bacteria and Staphylococcus epidermidis bacteria. This research method is the disc method by measuring the inhibition zone of butterfly pea flower extract at several concentrations. The results of the research show that butterfly pea flower extract has activity in inhibiting the growth of Staphylococcus aureus and Staphylococcus epidermidis bacteria. The telang flower extract gel mask has antibacterial activity against Staphylococcus aureus and Staphylococcus epidermidis bacteria, and the concentrations that are effective in inhibiting bacterial growth are 17% and 19%. In conclusion, butterfly pea flower extract has been proven to have potential as an effective antibacterial agent against Staphylococcus aureus and Staphylococcus epidermidis, especially at certain concentrations.

Keywords: Butterfly flower gel mask, Staphylococcus aureus, Staphylococcus epidermidi

Pengaruh Pemberian Ekstrak Etanol Daun Sambiloto Andrographis paniculata (Burm. fil) Ness Terhadap Histologi dan Faal Ginjal Tikus Putih (Rattus novergicus L.) yang Diinduksi Timbal Asetat (Pb(C2H3O2)2)

2024-10-31T00:48:43+00:00

This study aims to examine the impact of ethanol extract from bitter leaf (Andrographis paniculata) on the morphology, histology, and physiology of the kidneys of white rats (Rattus novergicus) induced by lead acetate. The method used was a completely randomized experimental design, consisting of five treatment groups with five repetitions. The control group was only given food and drink, while the experimental group received lead acetate for 28 days at a dose of 40 mg, followed by administration of bitter extract at varying doses (250, 500, and 750 mg/kg body weight) for 14 days. The results showed that administration of lead acetate caused histological damage to the kidneys, such as necrosis, tubular degeneration, and tubular dilatation, and increased blood urea and creatinine levels, which are indicators of kidney function. These findings indicate that an ethanol extract of bitter leaf at a dose of 750 mg/kg body weight can mitigate this histological damage and has the potential to reduce urea and creatinine levels. Thus, bitter leaf extract shows potential as a kidney protective agent against damage induced by lead acetate.

Keywords: Kidney, Creatinine, Lead Acetate, Ureum

Pengaruh Interval Lama Penyungkupan dengan Kombinasi Media Tanam (Tanah, Arang Sekam, Kascing) Terhadap Pertumbuhan dan Hasil Tanaman Selada (Lactuca Sativa L.)

2024-11-12T23:07:12+00:00

This research aims to determine the effect of long exposure intervals and the combination of planting media on the growth and yield of lettuce (Lactuca sativa L.). The research method used was a Randomized Group Design (RAK) with two factors. The first factor is the exposure interval (S0 = control, S1 = 10 days, S2 = 20 days, S3 = 30 days), and the second factor is the planting medium (P0 = control, P1 = soil + vermicompost 1:1, P2 = soil + husk charcoal 1:1, P3 = soil + husk charcoal + vermicompost 1:1:2, P4 = soil + husk charcoal + vermicompost 1:2:1). Parameters observed included plant height, number of leaves, wet weight, and dry weight. Data analysis used Multivariate ANOVA and the Duncan Multiple Range Test (DMRT) at the 5% level. The results showed that a 30 days cover interval (S3) gave the best results on plant height, while a 10 days cover interval (S1) produced the highest number of leaves, wet weight, and dry weight. The planting medium influences plant height and number of leaves, with the best treatment being P3 for plant height and P1 for number of leaves. The best combination was found in S3P3 for plant height and S3P4 for number of leaves, while for wet and dry weight, S1P1 gave optimal results. The conclusion of this research is that a cover interval of 10–30 days and a combination of planting media have a significant effect on the growth and yield of lettuce plants.

Keywords: Covering Interval, Combination of Planting Media (Soil, Charcoal Husk, Vermicompost), Lettuce