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All Journal Jurnal Pelita Pendidikan Jurnal Pengajaran MIPA Jurnal Pengajaran Matematika dan Ilmu Pengetahuan Alam Jurnal Pembelajaran Biologi : Kajian Biologi dan Pembelajarannya Best Journal (Biology Education, Sains and Technology) Journal Of Millennial Community Jurnal Pengabdian Masyarakat Nusantara FORTE JOURNAL Mitra Abdimas: Jurnal Pengabdian kepada Masyarakat Herbal Medicine Journal Jurnal ABDIMAS MUTIARA Biodik: Jurnal Ilmiah Pendidikan Biologi Toga Jurnal Keguruan dan Ilmu Pendidikan
Retnita Ernayani Lubis
Universitas Islam Sumatera Utara
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Health Professions Immunology & microbiology Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Buah Pisang barangan (Musa acuminata linn) Sebagai Media Alternatif Perkembangbiakan Bakteri Lubis, Retnita Ernayani; Sapitri, Alfi; Arisetya, Dian; Marbun, Eva Diansari
Herbal Medicine Journal Vol 8 No 1 (2025): Herbal Medicine Journal
Publisher : Program Studi S1 Farmasi, STIKES Senior, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58996/hmj.v8i1.155

Abstract

Barangan banana (Musa acuminata linn) has an energy content of 89 calories, 22.84 grams of carbohydrates, 1.09 grams of protein and 0.33 grams of fat. The nutritional content and bioactive substances of barangan bananas have phenolics, anthocyanins and phenols. The purpose of this study was to determine whether barangan bananas can potentially be an alternative medium for bacterial growth. The growth method used in this study was the scratch method, with the calculation of the number of colonies using the TPC (Total Plate Count) method. The results of the study on the scratch method at various concentrations were able to grow optimally on barangan banana-based media at a concentration of 36%. The shorter exponential phase (log) period in the 36% concentration media with a higher cell density than in the 12% concentration media. Conclusion: Barangan banana (Musa acuminata linn) can potentially be an alternative medium for bacterial growth.
Edukasi Pemanfaatan Pisang Kepok sebagai Media Tumbuh Bakteri dan Aplikasi Fisika dalam Proses Pengolahan Tepung Pisang di SMA Negeri 7 Medan Lubis, Retnita Ernayani; Sapitri, Alfi; Diansari Marbun, Eva; Arisetya, Dian
Jurnal Pengabdian Masyarakat Nusantara (JPMN) Vol. 5 No. 1 (2025): Februari - Juli 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jpmn.v5i1.4746

Abstract

This community service activity aims to improve students' scientific literacy through education on the use of kepok bananas as an alternative medium for bacterial growth and the application of physics concepts in the process of processing banana flour. The program was implemented at SMA Negeri 7 Medan, which has limited science laboratory facilities, so that learning is still predominantly theoretical. The activity was designed through four main stages: initial survey, socialization, training, and mentoring. Students were guided to recognize the starch content in bananas as an energy source for microorganisms and to understand the principle of heat transfer in drying bananas. Implementation was carried out through direct practice of making banana flour and bacterial culture media based on local materials. Evaluation of the results showed a significant increase in student understanding, with more than 80% of students successfully making effective growth media marked by the formation of even bacterial colonies. In addition, 92% of students stated that this activity increased their understanding of science in an applicable and enjoyable way. This activity also opens up opportunities for cross-disciplinary integration (biology and physics) and the potential for entrepreneurship based on banana processing. The entire program proves that science learning based on local materials and direct practice can be an effective strategy to improve students' scientific skills and learning independence in high schools.
Aktivitas Antibakteri Ekstrak Etanol Bulbil Porang (Amophophallus muelleri Blume.) Terhadap Bakteri Staphylococcus aureus dan Streptococcus mutans Sapitri, Alfi; Marbun, Eva Diansari; Arisetya, Dian; Lubis, Retnita Ernayani
Herbal Medicine Journal Vol 8 No 2 (2025): Herbal Medicine Journal
Publisher : Program Studi S1 Farmasi, STIKES Senior, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58996/hmj.v8i2.161

Abstract

The porang is a fruit produced by the porang plant which is brownish black in color, oval in shape like a stone and the size is approximately the size of small marbles to large marbles, growing between the stems of the porang plant. This study aimed to determine the activity of the ethanol extract of the porang frog (Amorphophallus muelleri Blume) as an antibacterial against Staphylococcus aureus and Streptococcus mutans bacteria and to determine the chemical compounds contained in the porang frog (Amorphophallus muelleri Blume). Porang frog simplicia powder was extracted in 96% ethanol by maceration. Simplicia powder is screened to determine its phytochemical content. The antibacterial activity test was carried out using the Kirby Bauer method using paper discs against Staphylococcus aureus and Streptococcus mutans bacteria to determine the zone of inhibition. The simplicia results showed that the simplicia frog porang had 6.08% water content, 29.11% water soluble extract, 9.70% ethanol soluble extract, 93.51% total ash content, insoluble ash content in ethanol. acid 91.96%. Simplicia said porang contains alkaloids, flavonoids, and tannins.The ethanol extract of the porang frog (Amorphophallus muelleri Blume) has antibacterial activity against Staphylococcus aureus and Streptococcus mutans bacteria.
Aktivitas Antibakteri Ekstrak Etanol Daun Jengkol (Archidendron pauciflorum Benth.) Terhadap Bakteri Staphylococcus epidermidis dan Pseudomonas aeruginosa Arisetya, Dian; Sapitri, Alfi; Asfianti, Vivi; Lubis, Retnita Ernayani
Herbal Medicine Journal Vol 8 No 2 (2025): Herbal Medicine Journal
Publisher : Program Studi S1 Farmasi, STIKES Senior, Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58996/hmj.v8i2.162

Abstract

Archidendron pociflorum benth is a nutritious plant that is used as a traditional medicine that is often used by society. Secondary metabolic compounds contained in archidendron pociflorum leaves are alkaloids, flavonoids, tannins and saponin. The purpose of this research is to know the antibacterial activity of the extract of archidendron pociflorum leaf ethanol from the Staphylococcus epidermidis and Pseudomonas areuginosa bacteria. Research conducted experimentally including the collection and processing of archidendron pociflorum leaves. The powder simplisia leaves archidendron pociflorum then be done characteristic and macerated using ethanol 96%. Further extracts of archidendron pociflorum leaf ethanol in the phytochemical screening and carried out test antibacterial activity against Staphylococcus epidermidis and pseudomonas areuginosa bacteria use the diffusion method to make it with disc paper. Results characteristic simplisia of archidendron pociflorum leaves obtained water content of 8.1%, water soluble sari content of 9.49%, soluble pollen content of 7.61%, total ash content 3.80%, ash content of insoluble acid 14.67%. Scining extracts of archidendron pociflorum leaves and simplisia indicate the presence of alkaloid, tannins, saponin, flavonoids. The test results of antibacterial activity indicate that the leaf ethanol extract of the staphylococcus epidermidis bacteria with a concentration of 80%, 60%, 40%, 20% respectively had an obstacle zone of 13.6 mm, 12.3 mm, 11, 4mm and 9.7 mm. While in bacteria pseudomonas areuginosa with a concentration of 80%, 60%, 40%, 20% respectively has a inhibitory zone of 14.3 mm, 13.1 mm, 11.2 mm and 10.3 mm. Archidendron pociflorum leaf ethanol extract has been effective against antibacterial activity with a concentration of 80% against bacteria staphylococcus epidermidis and pseudomonas aureginosa.
Penerapan Pembelajaran Berbasis Proyek dalam Kurikulum Merdeka: Tantangan dan Solusi di Era Pendidikan 4.0 Lubis, Retnita Ernayani; Kinanti , Anggi Anastasia
Toga Jurnal Keguruan dan Ilmu Pendidikan Vol. 2 No. 1 (2025): April 2025
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/toga.v2i1.1052

Abstract

Penerapan Pembelajaran Berbasis Proyek (PjBL) dalam Kurikulum Merdeka bertujuan untuk mengembangkan keterampilan berpikir kritis dan pemecahan masalah pada siswa. Penelitian ini meninjau berbagai artikel yang mengkaji penerapan PjBL dalam konteks pendidikan, khususnya di jenjang pendidikan anak usia dini (PAUD) hingga perguruan tinggi. PjBL terbukti efektif dalam meningkatkan keterampilan kolaborasi, pemahaman konsep, dan motivasi siswa melalui proyek-proyek bermakna yang relevan dengan kehidupan nyata. Selain itu, penelitian ini menyoroti pentingnya integrasi teknologi dalam PjBL, serta tantangan yang dihadapi dalam implementasinya, seperti perencanaan yang kompleks, keterbatasan sumber daya, dan penilaian yang komprehensif. Dengan strategi yang tepat, tantangan ini dapat diatasi, sehingga PjBL dapat diimplementasikan secara optimal untuk mendukung profil pelajar Pancasila dan kebutuhan abad 21
Integrasi Budaya dan Keanekaragaman Hayati Kawasan Danau Toba dalam Pembelajaran Biologi untuk Penguatan Profil Pelajar Pancasila Lubis, Retnita Ernayani; Sapitri, Alfi
Toga Jurnal Keguruan dan Ilmu Pendidikan Vol. 2 No. 1 (2025): April 2025
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/toga.v2i1.1054

Abstract

Penelitian ini bertujuan untuk mengintegrasikan kekayaan budaya dan keanekaragaman hayati kawasan Danau Toba ke dalam pembelajaran biologi, guna memperkuat Profil Pelajar Pancasila. Melalui pendekatan kualitatif, data dikumpulkan dari observasi lapangan, wawancara dengan guru dan siswa, serta studi literatur. Hasil penelitian menunjukkan bahwa integrasi ini meningkatkan pemahaman siswa terhadap materi biologi dan nilai-nilai budaya lokal, serta memperkuat karakter sesuai dengan dimensi Profil Pelajar Pancasila
Pemanfaatan Potensi Ekosistem Danau Toba sebagai Sumber Belajar Biologi yang Kontekstual dan Berkelanjutan Lubis, Retnita Ernayani; Nababan, Surya Aymanda
Toga Jurnal Keguruan dan Ilmu Pendidikan Vol. 2 No. 1 (2025): April 2025
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/toga.v2i1.1055

Abstract

Penelitian ini bertujuan untuk menggali dan memanfaatkan potensi ekosistem Danau Toba sebagai sumber belajar biologi yang kontekstual dan berkelanjutan. Ekosistem Danau Toba memiliki kekayaan hayati dan budaya yang tinggi sehingga relevan digunakan dalam pembelajaran biologi berbasis lingkungan. Metode penelitian menggunakan pendekatan kualitatif deskriptif melalui observasi lapangan, wawancara dengan masyarakat lokal, dan studi literatur. Hasil penelitian menunjukkan bahwa ekosistem Danau Toba dapat dimanfaatkan untuk pembelajaran biologi pada materi ekosistem, keanekaragaman hayati, dan pelestarian lingkungan. Implikasi dari penelitian ini adalah perlunya integrasi sumber belajar lokal dalam kurikulum pendidikan biologi untuk menumbuhkan kepedulian lingkungan dan penguatan profil pelajar Pancasila.
Pembelajaran Berbasis Proyek dengan Sumber Belajar Potensi Lokal: Upaya Meningkatkan Kemandirian dan Kreativitas Siswa Lubis, Retnita Ernayani; Mardiana, Tri Astuti
Toga Jurnal Keguruan dan Ilmu Pendidikan Vol. 2 No. 1 (2025): April 2025
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/toga.v2i1.1056

Abstract

Penelitian ini bertujuan untuk mendeskripsikan penerapan pembelajaran berbasis proyek (Project-Based Learning/PjBL) dengan memanfaatkan potensi lokal sebagai sumber belajar kontekstual di tingkat sekolah menengah pertama. Potensi lokal, seperti pertanian, kerajinan, dan budaya tradisional, menjadi sarana pembelajaran yang autentik dan relevan dalam mendukung implementasi Kurikulum Merdeka. Penelitian ini menggunakan pendekatan kualitatif deskriptif dengan teknik pengumpulan data berupa observasi, wawancara mendalam dengan guru dan siswa, serta dokumentasi hasil proyek. Hasil penelitian menunjukkan bahwa PjBL berbasis potensi lokal mampu meningkatkan kemandirian, kreativitas, dan keterlibatan siswa secara aktif dalam proses pembelajaran. Selain itu, pendekatan ini memperkuat hubungan antara materi pelajaran dengan kehidupan nyata serta menumbuhkan rasa cinta terhadap budaya dan lingkungan sekitar. Temuan ini menggarisbawahi pentingnya integrasi potensi lokal ke dalam kurikulum sebagai upaya membentuk profil pelajar Pancasila dan menghadirkan pembelajaran yang bermakna dan transformatif.
Pembelajaran Kultur Jaringan Tanaman Obat Berbasis Project Base Learning (PjBL) Terintegrasi Lesson Study: Plant Tissue Culture Learning Based on Project Based Learning (PjBL) Integrated Lesson Study Sapitri, Alfi; Tambunan, Muhammad Iqbal H.; Lubis, Retnita Ernayani; Arisetya, Dian
BIODIK Vol. 10 No. 4 (2024): Desember 2024
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biodik.v10i4.38756

Abstract

The learning process that occurs still focuses on the lecturer as the main source of knowledge. So, to develop superior graduate competencies, learning development is needed by implementing project based learning (PjBL) integrated lesson study in learning medicinal plant tissue culture. In project learning (PjBL) students are required to be able to master theoretical concepts in the field of knowledge in depth, procedurally, analyze data, be able to solve problems, make decisions based on information and data analysis, and provide and choose alternative solutions. The aim of this research is to increase the learning effectiveness of pharmacy students. The research method used is Development or Research and Development (R&D). Lesson Study activities are carried out in 3 stages, namely planning, implementing (do) accompanied by project-based learning, and reflection (see). The research subjects were 50 pharmacy students from Sari Mutiara University, Indonesia. The research results show that: the application of PjBL to medicinal plant tissue culture which is integrated in lesson study can improve student learning outcomes as seen from the pre-test results of 37.4% and post-test results of 83.9%. The project carried out by students on medicinal plant tissue culture in all 10 groups resulted in the production of 100% sterile media, the results of explant initiation were 94% sterile and the explants grew 99.3%.
Karakteristik Biologi dan Ekologi Chelonia mydas Di Pulau Berhala Kab. Serdang Bedagai Pane, Cut Indah Anggraini; Fefiani, Yusri; Manurung, Nurhasnah; Sularno, Sularno; Azwar, Edi; Warsodirejo, Pandu Prabowo; Lubis, Retnita Ernayani
BEST Journal (Biology Education, Sains and Technology) Vol 6, No 2 (2023): September 2023
Publisher : Program Studi Pendidikan Biologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/best.v6i2.7873

Abstract

Penelitian ini bertujuan untuk mengetahui karakteristik biologi dan ekologi Chelonia mydas di Pulau Berhala untuk pembuatan media pembelajaran bio marine yang berupa video pembelajaran. Sampel penelitian ini adalah famili Chelonidae ditemukan di Pulau Berhala.Penelitian ini dilakukan melalui observasi langsung. Pengambilan data dilakukan dengan Metode Deskriptif Eksploratif. Dari hasil penelitian yang dilakukan di Pulau Berhala menunjukkan bahwa data dari spesies famili Chelonidae yang ditemukan hanya spesies Chelonia mydas. Indentifikasi dari spesies Chelonia mydas yang ditemukan dengan cara mengamati karakteristik biologi dan ekologi dan mendeskripsikan secara akurat. Pembuatan media pembelajaran Bio Marine yang berupa Video Pembelajaran merupakan bagian integral dari proses pembelajaran. Dengan penggunan Video Pembelajaran sangat berperan aktif dalam pembelajaran secara media
Co-Authors Adlina, Zuraidah Alfi Sapitri Ali Ali Asfianti, Vivi Azwar, Edi Budi, Rahmad Setia Dewi, Mila Ariska Dian Arisetya Dian Arisetya, Dian Ely Djualia Ely Djulia Eva Diansari Marbun Eva Diansari Marbun Hasruddin Lubis Ibrohim Kinanti , Anggi Anastasia Laila, Yusra Mahfuzi Irwan Marbun, Eva Diansari Mimien Henie Irawaty Nurhasnah Manurung, Nurhasnah Pane, Cut Indah Anggraini Paramuji, Muji Rosdiana Sapitri*, Alfi Sapitri, Alfi Sri Endah Indrawati Sularno Sularno, Sularno SURYA AYMANDA NABABAN Syukur Berkat Waruwu Tambunan, Muhammad Iqbal H. Tri Astuti Mardiana Vivi Asfianti Warsodirejo, Pandu Prabowo Yusri Fefiani