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ANTIOXIDANT ACTIVITY TEST AND ANALYSIS OF COMPOUNDS CONTAINED IN ANGELS’S TRUMPET FLOWER EXTRACT (Brugmansia suaveolens) Wuwungan, Axel; Manampiring, Nonny; Gedoan, Sukmarayu; Mokosuli, Yermia Semuel; Roring, Verawati Ida Yani
Indonesian Biodiversity Journal Vol. 6 No. 1 (2025): April 2025
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v6i1.12553

Indonesia is a highly biodiverse country, second only to Brazil. This gives Indonesia enormous potential in ethnopharmacology. Previous studies have shown that the leaves of the Brugmansia suaveolens plant, also known as Angel trumpet, have high antioxidant activity. The aim of this study is to test the antioxidant activity of B. suaveolens flowers and conduct quantitative screening to determine which compounds play the greatest role in their antioxidant activity. This research used the DPPH test and Gas Chromatography-Mass Spectrometry (GC-MS) screening. Ascorbic acid was used as the comparator in this study. Before the DPPH and GC-MS testing, the samples were extracted using the cold maceration technique with a 95% ethanol solvent. Then, the samples were concentrated using a rotary evaporator. The IC₅₀ value of the ethanol extract of B. suaveolens flowers is 196.16 µg/mL, while the IC₅₀ value of ascorbic acid, the comparator, is 3,814 µg/mL. This result shows that the ethanol extract of B. suaveolens flowers has moderate antioxidant activity. Screening bioactive compounds with GC-MS showed that Hexadecenoic acid and Octadecanoic acid play the biggest role in antioxidant activity. However, the compound with the highest content in the ethanol extract of B. suaveolens flowers is scopolamine.

The Influence of the Mind Mapping Model on Students’ Learning Outcomes in Biology Learning at Class XI in Tumou Tou Christian High School, Bitung City Lolaro, Egrina; Roring, Verawati Ida Yani; Nanlohy, Fanny Nella
Jurnal Ilmiah Mandala Education (JIME) Vol 10, No 2 (2024): Jurnal Ilmiah Mandala Educartion (April)
Publisher : Lembaga Penelitian dan Pendidikan Mandala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58258/jime.v10i2.6853

Based on the results of observations and interviews with class This research aims to find out whether the mind mapping model can improve student learning outcomes in plant tissue material in class XI Tumou Tou Christian High School. This research uses a quasi-experimental method (quasi-experiment). The subjects of this research were class XI-A as the experimental class and class XI-C as the control class. Both classes will be given learning outcomes tests in the form of pretest and posttest. Based on the results of data analysis, the results showed that there was an influence of the mind mapping model on student learning outcomes in plant tissue material in class XI Tumou Tou Christian High School. This is based on the results of the t test using IBM SPSS for Windows if the Sig. (2-tailed) < Research Alpha (0.05), namely 0.00 <0.05, then H0 is rejected and H1 is accepted. This shows that there is an influence of applying the mind mapping model on improving student learning outcomes in plant tissue material in class XI Tumou Tou Christian High School.

Identifikasi Teripang Laut (Holothuroidea) dari Perairan Laut Pulau Kabaruan Berdasarkan Identifikasi Morfologi dan DNA Barcoding Rattu, Ferencia Esananda; Mege, Revolson; Manampiring, Nonny; Roring, Verawati Ida Yani; Gedoan, Sukmarayu; Mokosuli, Yermia
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
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.v12i1.9649

Indonesia is known with its high biodiversity. One of them is sea cucumber. Various species of sea cucumbers are found in Indonesian sea in Talaud Regency at Kabaruan Island. Identification of sea cucumbers to reveal the biodiversity of sea cucumbers in Kabaruan Island, which is almost unknown. This research was to identify six samples of sea cucumber (Holothuroidea) in Kabaruan Island based on morphology and DNA barcoding using the COI gene. The differences between each species can be seen from the morphological characteristics, the length and width of sea cucumbers, papillae, pattern and color. The results showed that there were 4 species from 6 samples, which is Holothuria leucospilota, Holothuria whitmaei, Eleutherozoa sp., and Holothuria atra. That six samples with the code A1, A2, B1, C1, and C2 have a homology level of 99%-100% with the target nucleotide sequence from GenBank. Meanwhile, the sampleâ€™s code A3 has a homology level of 90% with the Eleutheroza sp. so there is a possibility that sample A3 is a new taxa that has the highest similarity to the Eleutheroza sp. From the six samples, it was found that samples A2 and B1 had the highest level of similarity which is 100%. Meanwhile, the samples with the lowest percentage values are samples A3 and B1 and samples A2 and A3, with a percentage value of 82.75%. There were 4 species from six samples found in Kabaruan Island. There is a possibility that Sample A3 is a new species that is similar to Eleutheroza sp.

APPLICATION OF Eco-Enzyme CONVERSION RESULTS INTO DISHWASHER SOAP Tedang, Bybyani; Roring, Verawati Ida Yani; Moko, Emma Mauren; Posumah, Danny Christian; Lawalata, Helen J
Indonesian Biodiversity Journal Vol. 5 No. 2 (2024): August 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i2.10752

The application of the conversion results from Eco-Enzyme into dishwashing soap, the fermentation process lasts for one months, where the resulting liquid is dark brown in color and has a very strong sweet and sour fermented aroma. There is a lack of public knowledge about the very profitable benefits of Eco-Enzyme, such as as a multi-purpose cleaner as a multi-functional liquid which can be converted, one of the ways, into dishwashing soap. This research aims to determine the application of the results of converting Eco-Enzyme into dishwashing soap. This research used experimental methods and a research period of 3 months. This Eco-Enzyme is made with a ratio of organic ingredients: sugar: water 3:1:10. The Eco-Enzyme harvest is converted into dishwashing soap by adding lerak and Methyl Ester Sulfonate (MES). Eco-Enzyme conversion soap was then applied to several treatment groups: plastic plates, cans and glass. The results of the application show that the dishes washed with Eco-Enzyme using lerak have not completely removed dirt, oil and odors in each treatment, whereas Eco-Enzyme using Methyl Ester Sulfonate (MES) when compared with Sunlight brand liquid soap sold on the market shows that there are similarities both in terms of cleanliness, tapestry and smell. The research conclusion is that the application of the Eco-Enzyme conversion results has significant potential to be developed into an active ingredient for environmentally friendly dishwashing soap.

ANTIOXIDANT ACTIVITY TEST AND ANALYSIS OF COMPOUNDS CONTAINED IN ANGELS’S TRUMPET FLOWER EXTRACT (Brugmansia suaveolens) Wuwungan, Axel; Manampiring, Nonny; Gedoan, Sukmarayu; Mokosuli, Yermia Semuel; Roring, Verawati Ida Yani
Indonesian Biodiversity Journal Vol. 6 No. 1 (2025): April 2025
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v6i1.12553

Indonesia is a highly biodiverse country, second only to Brazil. This gives Indonesia enormous potential in ethnopharmacology. Previous studies have shown that the leaves of the Brugmansia suaveolens plant, also known as Angel trumpet, have high antioxidant activity. The aim of this study is to test the antioxidant activity of B. suaveolens flowers and conduct quantitative screening to determine which compounds play the greatest role in their antioxidant activity. This research used the DPPH test and Gas Chromatography-Mass Spectrometry (GC-MS) screening. Ascorbic acid was used as the comparator in this study. Before the DPPH and GC-MS testing, the samples were extracted using the cold maceration technique with a 95% ethanol solvent. Then, the samples were concentrated using a rotary evaporator. The IC₅₀ value of the ethanol extract of B. suaveolens flowers is 196.16 µg/mL, while the IC₅₀ value of ascorbic acid, the comparator, is 3,814 µg/mL. This result shows that the ethanol extract of B. suaveolens flowers has moderate antioxidant activity. Screening bioactive compounds with GC-MS showed that Hexadecenoic acid and Octadecanoic acid play the biggest role in antioxidant activity. However, the compound with the highest content in the ethanol extract of B. suaveolens flowers is scopolamine.

APPLICATION OF Eco-Enzyme CONVERSION RESULTS INTO DISHWASHER SOAP Tedang, Bybyani; Roring, Verawati Ida Yani; Moko, Emma Mauren; Posumah, Danny Christian; Lawalata, Helen J
Indonesian Biodiversity Journal Vol. 5 No. 2 (2024): August 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i2.10752

The application of the conversion results from Eco-Enzyme into dishwashing soap, the fermentation process lasts for one months, where the resulting liquid is dark brown in color and has a very strong sweet and sour fermented aroma. There is a lack of public knowledge about the very profitable benefits of Eco-Enzyme, such as as a multi-purpose cleaner as a multi-functional liquid which can be converted, one of the ways, into dishwashing soap. This research aims to determine the application of the results of converting Eco-Enzyme into dishwashing soap. This research used experimental methods and a research period of 3 months. This Eco-Enzyme is made with a ratio of organic ingredients: sugar: water 3:1:10. The Eco-Enzyme harvest is converted into dishwashing soap by adding lerak and Methyl Ester Sulfonate (MES). Eco-Enzyme conversion soap was then applied to several treatment groups: plastic plates, cans and glass. The results of the application show that the dishes washed with Eco-Enzyme using lerak have not completely removed dirt, oil and odors in each treatment, whereas Eco-Enzyme using Methyl Ester Sulfonate (MES) when compared with Sunlight brand liquid soap sold on the market shows that there are similarities both in terms of cleanliness, tapestry and smell. The research conclusion is that the application of the Eco-Enzyme conversion results has significant potential to be developed into an active ingredient for environmentally friendly dishwashing soap.

Composition and Diversity of Forestry Plant Species in Forest Areas Manado State University, North Sulawesi Nanlohy, Fanny Nella; Moko, Emma Mauren; Ngangi, Jantje; Ngangi, Crescentia M.J; Roring, Verawati Ida Yani
Jurnal Penelitian Pendidikan IPA Vol 10 No 1 (2024): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i1.4794

Indonesia is an archipelagic country with a tropical climate so it has a large forest area. High rainfall and sufficient solar irradiation make the diversity of living things both flora and fauna very high. This study aims to identify and determine the level of diversity of forestry plants in the forest area of Manado State University, North Sulawesi. This research will be carried out in April - May 2023 in the forest area of Manado State University, North Sulawesi. Sampling in this study was carried out using the Purposive Sampling (Judgmental Sampling) technique with 9 plots in 3 observation stations. The results of the study found that in all sampling plots, there were 17 individuals of forestry plants with 9 species. The highest Important Value Index (IVI) belongs to the species Petrocarpus indicus with an IVI of 61%. The Shannon Winner diversity index H = 2.07 was found to be in the medium category.

PENGEMBANGAN MEDIA PEMBELAJARAN AUGMENTED REALITY DENGAN MODEL PROBLEM BASED LEARNING PADA MATA PELAJARAN BIOLOGI DI SMA NEGERI 1 TONDANO Peasu, Firja; Paat, Meike; Roring, Verawati Ida Yani
BIOCHEPHY: Journal of Science Education Vol. 5 No. 2 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penelitian ini bertujuan untuk mengembangkan media pembelajaran augmented reality menggunakan model problem based learning guna meningkatkan hasil belajar siswa pada materi virus. Penelitian ini menggunakan model pengembangan ADDIE (analysis, design, development, implementation, evaluate). Subjek penelitian adalah siswa kelas X SMA Negeri 1 Tondano. Hasil penelitian menunjukkan media yang dikembangkan sangat layak digunakan, dengan validitas ahli media sebesar 94,64% dan validitas materi sebesar 85%. Kepraktisan media dinilai sangat baik oleh guru dengan presentase sebesar 93%, uji coba kelompok kecil dengan presentase 90% dan uji coba kelompok besar dengan presentase 91%. Efektivitas media dibuktikan dengan peningkatan hasil belajar siswa yang signifikan, dimana 86,37% siswa yang masuk kategori “tinggi” (N-Gain > 0,7). Sementara itu 65,12% yang masuk dalam kategori “sedang” (0,3<g? 0.7) dan tidak ada siswa yang termasuk dalam kategori “kurang” (g?0,3). Berdasarkan pengembangan dan hasil penelitian dapat disimpulkan bahwa media pembelajaran augmented reality menggunakan model problem based learning terbukti valid, praktis, dan efektif dalam meningkatkan pemahaman siswa pada materi virus.

PENGARUH MODEL PEMBELAJARAN READ, ANSWER, DISSCUS, EXPLAIN, CREATE (RADEC) TERHADAP HASIL BELAJAR SISWA KELAS X SMA NEGERI 1 AMURANG Winokan, Silvana Airiana Magdalena; Naharia, Orbanus; Roring, Verawati Ida Yani
BIOCHEPHY: Journal of Science Education Vol. 5 No. 2 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar

Hasil observasi di SMA Negeri 1 Amurang peneliti menemukan bahwa kurangnya inisiatif siswa untuk mencari sumber-sumber belajar secara mandiri, bergantung pada guru untuk memberikan materi ajar, dan kurangnya minat membaca yang berpengaruh pada hasil belajar dan kemampuan berpikir kritis mereka. Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Read, Answer, Disscus, Explain, Create (RADEC) terhadap hasil belajar siswa kelas X SMA Negeri 1 Amurang. Metode penelitian yang digunakan adalah eksperimen semu dengan pretest-posttest control group design. Populasi pada penelitian ini adalah seluruh peserta didik kelas X, sedangkan sampel penelitian terdiri dari dua kelas yaitu kelas X.E sebagai kelas eksperimen dan kelas X.K sebagai kelas kontrol. Teknik pengumpulan data berupa tes dan instrumen penelitian yang digunakan adalah tes hasil belajar bentuk pilihan ganda pada materi keanekaragaman hayati. Teknik analisis data berupa uji normalitas, homogenitas, dan hipotesis. Uji normalitas pada penelitian ini menggunakan uji Liliefors, uji homogenitas dilakukan dengan uji F, dan uji hipotesis menggunakan uji t. Hasil pengujian hipotesis menggunakan uji t menunjukkan bahwa thitung > ttabel atau 8,36 > 1,67 maka H1 diterima atau terdapat perbedaan yang signifikan. Dengan demikian peneliti menyimpulkan bahwa terdapat pengaruh strategi pembelajaran RADEC terhadap hasil belajar siswa kelas X SMA Negeri 1 Amurang berpengaruh signifikan terhadap hasil belajar siswa.

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