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Bioscientist : Jurnal Ilmiah Biologi
Published by Universitas Pendidikan Mandalika
ISSN : 23385006     EISSN : 26544571     DOI : https://doi.org/10.33394
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences
Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of biology research and teaching. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Special emphasize are as follow: 1. Research on Learning Biology (Biology Learning Materials at All Education Levels). 2. Pure Research of Biology Developed or Studied to the Sources, Materials, or Instructional Media Biology (Biology Learning Materials at All Education Levels and Application in Society). 3. Curriculum of Biology Education at all Education Levels. 4. Class Action Research (CAR) and Lesson Study in Biology. 5. Other Qualitative Research of Biology Education. 6. The School Management and Biology/Science Laboratory Management. 7. Biology Learning Evaluation. 8. Teacher Professional Issues/Trends in Biology Education. 9. Another Study for the Scope of Biology Education. 10. Research on Environmental Education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 1,511 Documents
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Antifungal Activity of Noni (Morinda citrifolia) Leaf Extract against Cercospora capsici on Red Curly Chili Pepper (Capsicum annuum) In Vitro Adriano Gunawan; Farah Arhusy Nurbayani; Zian Arikah; Fitra Ari Aditya; Susiana Purwantisari
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 3 (2026): September
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.v14i3.22101

Abstract

This study aimed to evaluate the antifungal potential of noni leaf (Morinda citrifolia) extract at different concentrations in inhibiting the growth of Cercospora capsici, the causal agent of leaf spot disease in red curly chili pepper (Capsicum annuum). The study was conducted using a Completely Randomized Design (CRD) consisting of seven treatments, including noni leaf extract at concentrations of 20%, 40%, 60%, 80%, and 100%, a negative control (sterile distilled water), and a positive control (0.1% propineb). The research procedures included purification of the Cercospora capsici isolate, preparation of methanolic noni leaf extract, qualitative screening of secondary metabolites, and an in vitro growth inhibition assay using the poisoned food technique. The inhibition data were analyzed using one-way analysis of variance (ANOVA), followed by Duncan’s Multiple Range Test (DMRT) at a 5% significance level. Qualitative phytochemical screening revealed that noni leaf extract contained alkaloids, phenols, flavonoids, saponins, tannins, and steroids. The inhibition assay showed that the antifungal activity increased with increasing extract concentration. The highest Percentage Inhibition of Radial Growth (PIRG) was observed in the 100% noni leaf extract treatment, with a value of 93.82 ± 0.56%, categorized as very strong inhibition. This value was higher than that of the positive control (0.1% propineb), which exhibited a PIRG value of 47.19 ± 2.52%. These findings indicate that noni leaf extract has strong antifungal activity against Cercospora capsici under in vitro conditions and has potential as a plant-derived antifungal agent. Further studies under in vivo and field conditions are required to confirm its effectiveness in controlling leaf spot disease of red curly chili pepper.

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