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All Journal Biosfer: Jurnal Tadris Biologi Jurnal Penelitian Sains Bioscientist : Jurnal Ilmiah Biologi Sriwijaya Bioscientia BIOVALENTIA: Biological Research Journal
Singgih Tri Wardana
Jurusan Biologi, FMIPA Universitas Sriwijaya, Sumatera Selatan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Journal : BIOVALENTIA: Biological Research Journal

 1 
MORPHOLOGICAL CHARACTERISTICS OF NEPENTHES IN PEAT SWAMP AREA OF TULUNG SELAPAN, SOUTH SUMATERA Wardana, Singgih Tri; Ilmawati, Ika; Tanzerina, Nina; Juswardi, Juswardi; Aminasih, Nita; Harmida, Harmida
BIOVALENTIA: Biological Research Journal Vol. 5 No. 2 (2019)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (640.485 KB) | DOI: 10.24233/BIOV.5.2.2019.152

Abstract

This study is aimed to recognise the morphological characteristics of Nepenthes mirabilis and Nepenthes gracilis in peat swamp area including stem, leaf, tendril, pitcher, flower, fruit, and seed.  This study has been conducted in January  until April 2018, located in Petaling Village Tulung Selapan Sub-District, Ogan Komering Ilir, South Sumatera. This study uses an exploratory method and the the observation sample using the method of random plot is chosen by purposive sampling. Parameters observed morphological characteristics of Nepenthes include stems, leaves, tendrils, pitcher, flower, adn fruit, as well as measurement of environmental factors. Based on the study, the researcher obtained two types of Nepenthes which are Nepenthes mirabilis and Nepenthes gracilis in  peat swamp area of Petaling Village Tulung Selapan Sub-District, Ogan Komering Ilir. Nepenthes mirabilis has a teres stem, leaves that in the form of oblong to lanceolate, has a petiolate, the edge of the leaves is flat covered by smoothy hair, thick peristome in size of 0,4-0,5 cm. Meanwhile stem Nepenthes gracilis has triangular stem, leaves in formed of lanceolate, sessile, flat edge of leaves, thin peristome in size of 0,1-0,2 cm. The pitcher shape of Nepenthes mirabilis and Nepenthes gracilis are cylindrical, infundibulate, and waist. The flower of Nepenthes mirabilis and Nepenthes gracilis are compound in type of  raceme inflorescences. The fruit is formed as capsula, has four lobed, and contains numerous seeds. The seed is spindle-like and white colored.
A Testing of Mahogany Leaf Extract (Swietenia mahagoni) as Antidiabetic Potential In Mice (Mus musculus) Induced by Alloxan Miracles, Hadasa; Setiawan, Arum; Marisa, Hanifa; Tri Wardana, Singgih; Kamila , Alawiyah
BIOVALENTIA: Biological Research Journal Vol. 11 No. 2 (2025)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24233/biov.11.2.2025.515

Abstract

Diabetes mellitus is a chronic metabolic disease characterized by hyperglycemia due to impaired secretion or insulin function. Treatment with synthetic drugs often causes side effects so that safer alternatives are needed such as the use of medicinal plants. This study aims to test the potential of mahogany leaf extract (Swietenia mahagoni) as an antidiabetic and determine its optimal dose in mice (Mus musculus) induced by alloxan. The study was conducted in January–March 2025 at the Laboratory of Genetics and Biotechnology and the Laboratory of Animal Biosystematics, Department of Biology, Faculty of Mathematics and Natural Sciences, Sriwijaya University using the Completely Randomized Design (CRD) method. Mahogany leaf extract was obtained through the maceration method using 96% ethanol solvent. Mice were divided into 5 treatment groups, including negative control (aquadest), positive control (glibenclamide 5 mg), and three groups of mahogany leaf extract doses (70, 140, and 280 mg/kgBW). The results showed that mahogany leaf extract had an effect on reducing blood glucose levels in mice. A dose of 70 mg/kgBW gave the highest effect on reducing blood glucose levels (68%), greater than doses of 140 mg/kgBW (60%) and 280 mg/kgBW (65%). The results of the ANOVA test and further Post-hoc test showed significant differences between treatment groups, where the mahogany leaf extract treatment and positive control treatment were significantly different from the negative control. It can be stated that mahogany leaf extract has the potential as an antidiabetic, and the recommended optimal dose is 70 mg/kgBW.
Co-Authors Arum Setiawan Doni Setiawan Hanifa Marisa Harmida Harmida Ilmawati, Ika Juswardi Juswardi Juswardi, Juswardi Kamila , Alawiyah Laila Hanum Mangandi, Wulan Fransisca Miracles, Hadasa Nina Tanzerina Nita Aminasih Nursela, Dewi Nurwijayanti Rina Sri Kasiamdari