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Orbanus Naharia
Program Studi S2 Manajemen Pendidikan UNIMA
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Isolation and Identification of Lactic Acid Bacteria from Red Dragon Fruit (Hylocereus polyrhicus) as Exopolysaccharide Producers Tatebale, Rivaldo; Naharia, Orbanus; Lawalata, Helen J
Indonesian Biodiversity Journal Vol. 5 No. 1 (2024): April 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i1.7730

Abstract

Cherry tomatoes are a type of Red Dragon Fruit that has various benefits, including lowering cholesterol levels, preventing colon cancer, and strengthening the working power of muscles. Isolation of LAB isolated from Dragon Fruit as a production material for EPS. This study aims to isolate and identify LAB as a producer of EPS from red dragon fruit (Hylocereus polyrhiruz), which can produce exopolysaccharides. This research uses a descriptive research method. Data from experimental research in the laboratory obtained 10 LAB isolates, namely isolates NG1, NG2, NG3, NG4, NG5, NG6, NG7, NG8, NG9 and NG10. Based on the identification results, isolate NG1 has similarities with the genus Lactococcus (spherical, gram-positive, nonmotile, non-spore). While isolates NG2, NG3, NG4, NG5, NG6, NG7, NG8, NG9 and NG10 have similarities with the genus Lactobacillus (rod form, nonmotile, gram-positive). Based on the morphological characteristics, which are gram-positive, catalase-negative and non-spore. The ten isolates of lactic acid bacteria are capable of producing EPS. these are the results of EPS acquisition, namely: NG1(152.1 mg/L), NG2(127.9 mg/L), NG3(134.6 mg/L), NG4(130.9 mg/L), NG5(137 mg/L), NG6(139.2 mg/L), NG7(204.9 mg/L), NG8(156.2 mg/L), NG9(136.4 mg/L), and NG10 (157, 3 mg/L). The highest amount of EPS was isolated NG7 at 204.9 mg/L. Meanwhile, the lowest EPS was isolated NG4 at 130.9 mg/L.
THE EFFECT OF RICE HUSK CHARCOAL ON THE GROWTH AND PRODUCTION OF WHITE CHILI CAYEY (Capsicum frutescens L) Makalew, Evaristus; Naharia, Orbanus; Nanlohy, Fanny
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.v5i2.10751

Abstract

The aim of this research is: to determine and analyze the effect of giving rice husk charcoal on the growth and production of white cayenne pepper plants (Capsicum frutescens L). The method used in this research is the experimental method with a completely randomized design (RAL) approach. This shows that rice husk charcoal and planting media have different average values for plant height, number of leaves, number of branches, number of fruit and weight of white cayenne pepper. At the 12th week of observation, the M2ASP2 treatment had the highest value compared to other treatments, namely124.65 ± 31.73cm. Meanwhile treatment M1 ASP 0has the lowest value, namely79.23 ± 21.9cm.
Analysis of Weed Vegetation on Paddy Rice (Oryza sativa) Plant in Koya Village, South Tondano District Lazar, Noviana; Naharia, Orbanus; Taulu, Marthy
Indonesian Biodiversity Journal Vol. 5 No. 3 (2024): December 2024
Publisher : Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/ibj.v5i3.10759

Abstract

Paddy Rice (Oryza sativa) is the main food commodity in Indonesia, because most of the Indonesian population's staple food is Paddy Rice. Demand for Paddy Rice continues to increase from time to time along with population growth. The aim of this research is to determine the types and control of weeds in lowland Paddy Rice plants (Oryza sativa). This research is a qualitative descriptive study using a survey method directly observing weeds in the Paddy Rice planting area in Koya village, South Tondano subdistrict. The results of research on the density, dominance, and frequency of weed types in lowland Paddy Rice plants in Koya Village, South Tondano District show that there are 4 types of weeds in lowland Paddy Rice plants in Koya Village, namely Panicum repens, Fimbristylis litotoralis, Cyperus rotundus, and Pistia stratiotes. P.repens is a grass weed, F.litoralis and C.rotundus are a weed, and P.stratiotes is a broadleaf weed. The type that has the highest relative density (KR) is P. repens, namely 3.33%, followed by F. litoratlis, namely 26.67%, and the lowest is C. rotundus and P. stratiotes, namely 20.0%. Relative Dominance Value The highest (DR) was found in the weed type P. stratiotes, namely 51.56%, then followed by C. rotundus, namely 19.27%, F. litoralis, namely 15.10%, and the lowest, P. repens, namely 14.06%. The highest relative frequency (FR) was in P. repens and C. rotundus, namely 33.33%, followed by F. litoralis, namely 22.22% and the lowest was P. stratiotes, namely 11.11%. Based on the research results, it can be concluded that there are 4 types of weeds in lowland Paddy Rice plants in Koya Village, South Tondano District with the highest weed dominance index value, namely P. stratiotes, namely 27.55787; Weed control can be done chemically, biologically, mechanically and physically.
MODEL PROBLEM-BASED LEARNING PADA MATERI SISTEM PENCERNAAN PADA MANUSIA: SUATU STUDI PADA SISWA SMA NEGERI 2 TONDANO Willem, Alfiani; Naharia, Orbanus; Tengker, Anita C.C.
Jurnal Inovasi dan Teknologi Pendidikan Vol. 4 No. 1 (2025): Jurnal Inovasi dan Teknologi Pendidikan
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jurinotep.v4i1.114

Abstract

This study aims to evaluate the effectiveness of applying the Problem-Based Learning (PBL) model in improving student learning outcomes on the ecosystem material at SMA Negeri 2 Tondano. This study uses a Classroom Action Research (CAR) design with two cycles, involving 30 students in the experimental class using the PBL model and 30 students in the control class applying a conventional learning model based on discussions and question-and-answer sessions. Data were collected through affective observations and cognitive evaluations using posttests at the end of each cycle. The results of the study show that the PBL model can improve student learning outcomes in both cognitive and affective domains. In the cognitive domain, the classical completeness percentage increased from 80% in Cycle I to 100% in Cycle II, with the average class score increasing from 80.15 to 90.35. In the affective domain, all students showed significant improvement, with observation scores in the high category in both cycles. The application of the PBL model motivated students to be more actively engaged in learning and improved their positive attitudes, such as discipline, responsibility, and self-confidence. This study shows that the PBL model is effective in improving both cognitive understanding and affective development in students. These findings suggest that applying PBL in Biology learning can improve the quality of teaching and student learning outcomes, with important implications for the development of problem-based teaching methods in schools
DEVELOPMENT OF ANTI MOSQUITO LOTION MADE FROM CLOVE (SYSYGIUM AROMATICUM), LANGUSEI (FICUS MINAHASSAE), AND APIS DORSATA BINGHAMI HONEYCOMB PLANTS Hermanus, Britney Putri; Naharia, Orbanus; Mokosuli, Yermia Semuel
Jurnal Review Pendidikan dan Pengajaran Vol. 7 No. 1 (2024): Volume 7 No 1 Tahun 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jrpp.v7i1.24061

Abstract

Mosquitoes are the main insect vectors that cause various tropical diseases, including malaria, filariasis, and various viral diseases, such as dengue fever. Indonesia is a country with a tropical climate whose environmental characteristics are very supportive of mosquito breeding. Mosquitoes are infectious vectors that must be controlled. Efforts to control mosquito vectors include using repellents. Repellent is a chemical that can keep insects away so that insect bites can be avoided. This research aims to determine the formula for anti-mosquito lotion made from cloves, langusei, and beehives and to determine the results of organoleptic, physical tests, and the strength of repellent anti-mosquito lotion made from cloves, langusei, and beehives. The method used in this type of research is the laboratory experimental method. The samples used in this research were clove leaves, langusei, and honeycomb. The analyses carried out were organoleptic tests, pH tests, homogeneity tests, and protection power tests. The lotion, with the addition of clove, langusei, and honey bee hive plant extracts, meets the organoleptic test, test requirements for physical quality and repellent lotion strength, namely having a smooth and soft lotion mass, the color and aroma of the lotion is typical of a mixture of clove, langusei, and honey bee hive plants. The results of the study showed that from variations in the concentration of cloveleaf extract, langusei, and honey bee nest (0%, 0.25%, 5%, 10%), the best results were formula IV, namely with a concentration of 10% which had the best physical properties, safe to use and the most effective protective power to repel mosquitoes.
Co-Authors Anita Costanci Christine Tengker Aser Yalindua Daud, Putri Emma M Moko Eurika, Uwuh Jessie Fanny Nella Nanlohy Helen Joan Lawalata Hermanus, Britney Putri Herry Maurits Sumampouw Hiskia Kamang Manggopa IRIANI SETYAWATI Jantje Ngangi Lazar, Noviana Leu, Paulus L. Makalalag, Armita Makalew, Evaristus Manuahe, Carolin Marthy L S Taulu Mokosuli Yermia Samuel Nangoy, Wiesye M. S> Nova L.I.M Ogi parabelem tinno dolf rompas Peggy Veronica Togas Rolly R. Oroh Sukmarayu P. Gedoan Tahulending, Atika Tatebale, Rivaldo Tumanduk, Yahya Y.R. Turambi, James S. Utari Satiman Willem, Alfiani