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All Journal Jurnal Biologi Tropis Bioscientist : Jurnal Ilmiah Biologi
Putri, Mellanie Alia
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences

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Literature Review: The Potential of Phenolic Compounds as Allelopathic Agents in Mangifera indica Noli, Zozy Aneloi; Nurhafitri, Amanda; Puspita, Ayumi Rizci; Putri, Mellanie Alia; Santoso, Putra
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i1.8271

Abstract

Phenolic compounds are a group of secondary metabolites identified as having significant roles in various ecophysiological processes, including allelopathic activity. In Mangifera indica (mango), phenolic compounds contribute to chemical interactions between plants by releasing allelopathic substances that influence the growth and development of surrounding plant species. This study aims to review the potential of phenolic compounds in M. indica as allelopathic agents, focusing on identifying dominant types of phenolic compounds, allelopathic mechanisms, and their ecological impacts on plant communities. The research method employed is a literature review involving a search for relevant sources on Google Scholar covering the period from 2010 to 2024. Based on a review of various studies, it has been demonstrated that phenolic compounds in M. indica possess significant potential to inhibit the growth of competitors and can be utilized in environmentally friendly agricultural management.
Isolation and Characterization of Protease-Producing Thermophilic Bacteria from Padang Dama Hot Spring, Solok, Indonesia Putri, Mellanie Alia; Agustien, Anthoni; Marlida, Yetti; Alamsjah, Feskaharny
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): 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.v14i2.20118

Abstract

This study aimed to isolate, screen, and partially characterize protease-producing thermophilic bacteria from the Padang Dama hot spring, Solok, Indonesia. The main issue addressed in this study is the limited information regarding thermophilic bacteria capable of producing protease enzymes from this geothermal environment, despite their potential use in industrial processes requiring stable enzymes. Isolation was carried out using Nutrient Agar followed by incubation at 50 °C for 24 hours. Screening of protease activity was performed using Skim Milk Agar based on clear zone formation, and the proteolytic index (PI) was calculated to evaluate enzyme activity. Selected isolates were further characterized through macroscopic, microscopic, and biochemical analyses. The results showed that three isolates exhibited proteolytic activity, with isolate TUA-109 showing the highest proteolytic index, indicating superior enzymatic potential compared to other isolates. Partial characterization revealed that isolate TUA-109 is a Gram-negative, rod-shaped bacterium with positive catalase activity and motility, which are important traits supporting its adaptability and potential for enzyme production under extreme conditions. These findings highlight the potential of thermophilic bacteria from the Padang Dama hot spring as sources of protease enzymes, with isolate TUA-109 identified as a promising candidate for further investigation, particularly for industrial enzyme production. Future studies are recommended to optimize enzyme production and evaluate its application in industrial processes.
Co-Authors Anthoni Agustien Feskaharny Alamsjah Nurhafitri, Amanda Puspita, Ayumi Rizci Putra Santoso Yetti Marlida Zozy Aneloi Noli