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Sammanta, Rahula Vijja
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Chemistry

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Determination of Total Flavonoid Content from Extract and Fractions of Mangrove Leaves (Rhizopora mucronata) Sammanta, Rahula Vijja; Permatasari, Lina; Muliasari, Handa; Rachmalia Izzatul Mukhlishah, Neneng; Fersiyana Deccati, Rizqa
Acta Chimica Asiana Vol. 7 No. 2 (2024)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v7i2.199

Abstract

Indonesia, an archipelagic country, includes Lombok Island, known for its extensive mangrove forests, where Rhizopora mucronata is the dominant species. Rhizopora mucronata, from the Rhizoporaceae family, is known for its antibacterial, antifungal, and antioxidant properties due to its secondary metabolites, including flavonoids. However, research on the flavonoid content of its leaves remains unexplored. This study aimed to determine the total flavonoid content in extracts and fractions of R. mucronata leaves using the UV-Vis spectrophotometric method. Leaves were extracted with 96% ethanol using sonication and fractionated with n-hexane, ethyl acetate, and water. The extract and fractions yielded 42.33%, 43.15%, 40.49%, 9.74%, and 32.49%, respectively. TLC tests indicated the presence of flavonoids marked by blue spots. The flavonoid contents in the extract and fractions were 12,980; 14,160; 23,880; and 25,350 mg Quercetin equivalent/gram sample (mg QE/g). The total flavonoid content was analyzed using One-way ANOVA, showing higher levels in the n-hexane and ethyl acetate fractions than in the ethanol extract and water fraction. The high flavonoid content contributes to the biological activities of R. mucronata leaves.
Exploration of secondary metabolite profile in the n-hexane fraction of Rhizophora mucronata, Avicennia marina, and Sonneratia alba Maziya, Raehanul; Permatasari, Lina; Deccati, Rizqa Fersiyana; Muliasari, Handa; Rahman, Fania; Annas, Zulfiana Fatianingrum; Sammanta, Rahula Vijja
Acta Chimica Asiana Vol. 8 No. 1 (2025)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v8i1.231

Abstract

Indonesia is a maritime and archipelagic country with an ocean area of almost two-thirds of its total area, with a coastline stretching 99.123 km from Sabang to Merauke. According to Indonesian Law Number 1 of 2014, it is mentioned that one of the most important biological resources of the coast is mangroves. Some mangrove species commonly found on Lombok Island are Rhizophora mucronata, Sonneratia alba, and Avicennia marina. However, there has not been much exploration of the compound content in these mangroves. Therefore, this study aimed to identify the secondary metabolites of the n-hexane fraction of the three mangrove species using Gas Chromatography-Mass Spectrometry (GC-MS). The leaves of each mangrove species were extracted by sonication method using 96% ethanol solvent, followed by multistage fractionation using n-hexane and water. GC-MS analyzed the n-hexane fraction of each mangrove species. The GC-MS analysis revealed that in the n-hexane fraction of mangrove leaves Rhizophora mucronata and Avicennia marina there were 10 compounds, while Sonneratia alba obtained five compounds. The compounds with the highest intensity in the n-hexane fraction of mangrove leaves of Rhizophora mucronata, Sonneratia alba, and Avicennia marina were squalene (41.71%), ethyl oleate (87.53%), and ethyl oleate (44.02%), respectively. Squalene was reported to have antioxidant and anticancer activities. The ethyl oleate was reported to have bactericidal activity on gram-positive and negative bacteria. The three types of mangrove leaves can be an alternative source of medicine
Co-Authors Annas, Zulfiana Fatianingrum Deccati, Rizqa Fersiyana Fersiyana Deccati, Rizqa Maziya, Raehanul Muliasari, Handa Permatasari, Lina Rachmalia Izzatul Mukhlishah, Neneng Rahman, Fania