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Total Flavonoid and Tannin Content in Pumpkin Stem Extract (Cucurbita moschata) Vadillah Vadillah; Sutrisnawati Sutrisnawati; Manap Trianto; Fatmah Dhafir; Zulaikhah Dwi Jayanti; Masrianih Masrianih
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1113-1119

Cucurbita moschata is a medicinal plant that possesses various pharmacological properties, including antidiabetic, antifungal, antibacterial, anti-inflammatory, and antioxidant activities, which are associated with its bioactive compound content. One plant part that has been relatively underutilized is the pumpkin stem, although it has the potential to contain secondary metabolites such as flavonoids and tannins. This study aimed to identify and determine the levels of bioactive compounds in pumpkin stem extract based on stem maturity stages, namely young stems and mature stems, using both qualitative and quantitative methods. Qualitative analysis was conducted through phytochemical screening using color reaction methods with specific reagents to detect flavonoids and tannins. Quantitative analysis was performed using UV-Vis spectrophotometry based on standard calibration curves. The results showed that pumpkin stem extract tested positive for both flavonoids and tannins. Quantitative analysis indicated that the flavonoid content in young stems was 7.22, which was higher than in mature stems (3.00). In contrast, tannin content was higher in mature stems (9.03) compared to young stems (5.02). These differences indicate that flavonoids are more dominant in young tissues with active metabolic activity, whereas tannins tend to accumulate in mature tissues as part of plant defense mechanisms. Based on these findings, it can be concluded that pumpkin stem extract contains flavonoid and tannin compounds with varying levels depending on stem maturity, suggesting its potential as a natural source of antioxidants.

Phylogenetic Analysis of Schistosoma japonicum Based on 16S rRNA Gene Safani Safani; Sutrisnawati Sutrisnawati; Manap Trianto; I Nengah Kundera; Zulaikhah Dwi Jayanti; Masrianih Masrianih
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1161-1170

Schistosomiasis is a neglected tropical disease caused by trematode worms of the genus Schistosoma and remains a public health concern in several endemic areas of Central Sulawesi, Indonesia. DNA-based molecular approaches have been increasingly applied to support species identification and the analysis of genetic relationships in Schistosoma japonicum. This study aimed to investigate the phylogenetic relationships and genetic variation of S. japonicum based on the mitochondrial 16S rRNA gene. Samples of Oncomelania hupensis lindoensis were collected from endemic areas surrounding Lake Lindu, Central Sulawesi, Indonesia. Detection of S. japonicum was performed using the crushing method, followed by DNA extraction with the GS 100gSYNCTM DNA Extraction Kit. Amplification of the 16S rRNA gene was carried out using the Polymerase Chain Reaction (PCR) technique with the primers LR13107-F and LR12647-R. Sequence data were analyzed using BLAST, MEGA 11, MESQUITE, DNASTAR, GeneStudio, and DnaSP software. Phylogenetic trees were reconstructed using the Neighbor-Joining (NJ) and Maximum Likelihood (ML) methods with 10,000 bootstrap replicates. PCR amplification produced clear and high-quality DNA bands. BLAST analysis revealed query cover values ranging from 99.90% to 100% and sequence identity of 100% with Schistosoma japonicum sequences available in GenBank. Genetic variation analysis indicated low genetic diversity, characterized by two haplotypes, one variable site, haplotype diversity of 0.500 ± 0.170, and nucleotide diversity of 0.00055 ± 0.00015. Nucleotide composition analysis showed that thymine (T) was the most abundant nucleotide (43.53%), and the A+T content (72.14%) was higher than the G+C content (27.87%), a characteristic feature of mitochondrial genomes. Phylogenetic reconstruction using both NJ and ML methods consistently clustered the Central Sulawesi samples with S. japonicum populations from Shanghai and Guangdong, China, with strong bootstrap support values ranging from 99% to 100%. Genetic distance analysis based on the Kimura 2-Parameter model revealed genetic divergence values of 0.00–0.00% among Central Sulawesi samples and between the Indonesian and Chinese populations, indicating very close genetic relationships and high genetic homogeneity. These findings demonstrate that S. japonicum populations in Central Sulawesi exhibit low genetic variation and share close phylogenetic relationships with other Asian populations, providing valuable molecular information to support the development of schistosomiasis surveillance and control strategies in Indonesia.

Diversity of Freshwater Shrimp in Toaya Village, Sindue District, Donggala Regency Based on Phenotypic Data Risnawati Risnawati; I Made Budiarsa; Manap Trianto; I Nengah Kundera; Yulia Windarsih; Zulaikhah Dwi Jayanti
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1087-1094

Freshwater shrimp are aquatic resources that play important ecological and economic roles and exhibit considerable species diversity, characterized by variations in phenotypic traits. Information regarding the diversity of freshwater shrimp species and phenotypic variation in Toaya Village remains limited; consequently, data on the level of phenotypic diversity among species are still largely unavailable. This study aimed to identify the diversity of freshwater shrimp species and analyze their phenotypic characteristics, including morphometric and meristic traits, using a multivariate analytical approach. This research employed a descriptive-exploratory design with random sampling conducted across three observation stations. The collected freshwater shrimp specimens were identified based on morphological characteristics using established scientific literature as references and were subsequently measured using 40 phenotypic characters. The resulting data were analyzed using Principal Component Analysis (PCA) and the Unweighted Pair Group Method with Arithmetic Average (UPGMA). The results revealed the presence of four freshwater shrimp species, namely Macrobrachium mammilodactylus, Macrobrachium empulipke, Macrobrachium equidens, and Macrobrachium rosenbergii. These four species exhibited a phylogenetic relationship with a similarity coefficient of approximately 0.78. At the species level, individuals showed high phenotypic similarity (0.97–0.98), reflecting the consistency of phenotypic traits within each species. Principal Component Analysis demonstrated that the first two principal components accounted for the majority of phenotypic variation, with the greatest contributions originating from specific morphometric and meristic characters. This study concludes that the multivariate analytical approach applied was both effective and efficient in revealing diversity patterns based on phenotypic characteristics.

Phylogenetic Relationships of Grasshoppers (Orthoptera) in Rice Field Ecosystems of Parigi Moutong Regency Based on Morphological Characters Mia Pinasti Azizah; I Made Budiarsa; Manap Trianto; I Nengah Kundera; Abdul Ashari; Zulaikhah Dwi Jayanti
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1045-1053

Grasshoppers are insects belonging to the order Orthoptera, which comprises a highly diverse group of species distributed across various ecosystems, including agricultural habitats such as rice fields. This study aimed to analyze the phylogenetic relationships among Orthopteran grasshoppers inhabiting rice field ecosystems in Parigi Moutong Regency based on morphological characters and to describe the clustering patterns of the species identified in the area. Sampling was conducted in rice fields using an exploratory survey method with free collection techniques. Species identification was carried out through the examination of morphological characteristics using biodiversity references and taxonomic identification keys. Phylogenetic relationships were analyzed using the Unweighted Pair-Group Method with Arithmetic Average (UPGMA) implemented in the PAleontological STatistics software (PAST 4.03), while Principal Component Analysis (PCA) was performed and visualized in a biplot to support the clustering results. A total of nine grasshopper species were identified: Phaneroptera falcata, Oxytauchira brachyptera, Scudderia texensis, Atractomorpha crenulata, Tettigonia viridissima, Conocephalus fuscus, Phlaeoba infumata, Oxya serville, and Phlaeoba fumosa. The phylogenetic analysis grouped the species into two major clusters with three levels of relationship. A very close relationship was observed between Phlaeoba infumata and Phlaeoba fumosa (similarity index [SI] = 91%). A close relationship was found between the subclusters consisting of Atractomorpha crenulata, Phlaeoba infumata, and Phlaeoba fumosa, and those consisting of Oxytauchira brachyptera and Oxya serville (SI = 62%). In contrast, a more distant relationship was observed between Conocephalus fuscus and the group comprising Scudderia texensis, Phaneroptera falcata, and Tettigonia viridissima (SI = 47%). These phylogenetic patterns were supported by the PCA biplot, in which P. fumosa, P. infumata, O. serville, and O. brachyptera were positioned within the same component, whereas S. texensis, P. falcata, and T. viridissima occupied different regions, and C. fuscus was clearly separated from the other species. This study provides scientific information on morphology-based phylogenetic relationships among grasshopper species in rice field ecosystems, which may serve as a foundation for taxonomic studies and as a reference for biology education concerning grasshopper phylogeny.

Analysis of Flavonoid and Tannin Contents in Pumpkin Seed (Cucurbita moschata) Extract Adi Fahri; Sutrisnawati Sutrisnawati; Manap Trianto; Zulaikhah Dwi Jayanti; Fatmah Dhafir; Masrianih Masrianih
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1003-1009

Pumpkin is one of the herbal plants that possesses various medicinal properties, including antidiabetic, antifungal, antibacterial, anti-inflammatory, and antioxidant activities, due to the presence of bioactive compounds in its seeds. This study aimed to identify the bioactive compounds present in pumpkin seed extract using qualitative and quantitative descriptive methods. Qualitative analysis was conducted through color reaction tests using several specific reagents to identify the presence of flavonoid and tannin compounds. Quantitative analysis was performed using the UV-Vis spectrophotometric method based on standard solution calibration curves to determine the concentration of each compound. The qualitative test results indicated that the pumpkin seed extract positively contained flavonoids and tannins, as evidenced by the formation of specific color changes in each test. The quantitative analysis showed that the average flavonoid content was 9.34 mg/g, while the average tannin content was 9.42 mg/g. Based on the results of this study, it can be concluded that pumpkin seed extract contains high levels of flavonoid and tannin compounds, indicating its potential as a natural source of antioxidants. This study is expected to serve as a basis for further development regarding the potential utilization of pumpkin seeds with pharmacological effects.

Phylogenetic Analysis of Sulawesi Endemic Butterfly Cethosia myrina Using the COI (Cytochrome Oxidase I) Gene Iin B Mantulangi; Masrianih Masrianih; Manap Trianto; Fatmah Dhafir; Zulaikhah Dwi Jayanti; Amalia Buntu
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1055-1063

Cethosia myrina is a butterfly species belonging to the family Nymphalidae and is endemic to Sulawesi, Indonesia. The phylogenetic relationships of this species were investigated through molecular phylogenetic analysis. Phylogenetics is a method used to examine the evolutionary relationships among living organisms. This study aimed to describe the phylogenetic relationships of C. myrina based on the mitochondrial Cytochrome Oxidase Subunit I (COI) gene. Samples were collected using an exploratory survey method. Genomic DNA was isolated using the GS 100gSYNC™ DNA Extraction Kit. DNA amplification was performed using COI primers (LCO1490 forward and HCO2198 reverse) through the Polymerase Chain Reaction (PCR) technique. Amplified DNA fragments were visualized using 1% agarose gel electrophoresis, a UV transilluminator, and a gel documentation system. Subsequent bioinformatics analyses were conducted using Gene Studio, DnaSP, BLAST, DNASTAR, and MESQUITE software. Phylogenetic reconstruction was performed using the Neighbor-Joining (NJ) and Maximum Likelihood (ML) methods in MEGA version 11, applying the Kimura 2-parameter model with 10,000 bootstrap replicates. The results demonstrated that both the Neighbor-Joining and Maximum Likelihood methods produced phylogenetic trees that clearly illustrated the evolutionary relationships among the analyzed samples. Genetic variation analysis revealed the presence of two haplotypes, with a haplotype diversity (Hd) of 0.603 ± 0.165 and a nucleotide diversity (?) of 0.00053 ± 0.00013. Phylogenetic reconstruction formed a single monophyletic clade of C. myrina supported by a 99% bootstrap value. A genetic distance of 0.00% was observed among populations from Central Sulawesi (CMST1.1, CMST1.2, and CMST1.3), Central Sulawesi (EU275514.1), and South Sulawesi (HM998338.1), indicating an extremely close genetic relationship among these populations.

A Study of the NGF Gene Intron in the Philippine Scrubfowl (Megapodius cumingii) from Kabetan Island, Central Sulawesi Wayan Windyawati; I Made Budiarsa; Zulaikhah Dwi Jayanti; Manap Trianto; Abdul Ashari; I Nengah Kundera
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.1353-1361

The Philippine scrubfowl (Megapodius cumingii) is a bird species that utilizes environmental heat to incubate its eggs and has a wide geographic distribution across various habitats, including coastal forests, coastal areas, and small islands. This study aimed to describe and analyze the genetic diversity and phylogenetic relationships of Megapodius cumingii based on the Nerve Growth Factor (NGF) gene. Genomic DNA was isolated from blood samples of M. cumingii using the gSYNC™ DNA Extraction Kit (Geneaid) protocol and subsequently amplified using the Polymerase Chain Reaction (PCR) method with the forward primer AllNGF5' and reverse primer AllNGF3'. Sequence data were analyzed using BLAST to determine their similarity to reference sequences available in GenBank. Genetic diversity was assessed using DnaSP v6.12.03, while phylogenetic reconstruction was performed using MEGA 11 based on the Neighbor-Joining (NJ) method with the Kimura 2-Parameter model. The results showed that the nucleotide composition consisted of Adenine (A) 29.3%, Thymine (T) 19.8%, Cytosine (C) 26.9%, and Guanine (G) 24.1%, with a G+C content (51.0%) slightly higher than the A+T content (49.0%). Genetic diversity analysis revealed a haplotype diversity value of 0.533 ± 0.172 and a nucleotide diversity value of 0.00145 ± 0.00047. Phylogenetic reconstruction produced a consistent tree topology across two outgroup models, with all M. cumingii samples forming a single clade supported by high bootstrap values (99–100%). The phylogenetic relationships among M. cumingii samples from Kabetan Island, Tolitoli, were very close, as indicated by genetic distance values ranging from 0.000 to 0.003.

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