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All Journal Budapest International Research in Exact Sciences (BirEx Journal)
Ruphin, Fatiany Pierre
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Physics Transportation

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Enhancing Environmental Preservation through Biomethanation of Solid Waste from the Sisal Industries of South Amboasary Marie, Tolojanahary Jean; Tsirombahy, Soja Lahara; Boni, Randrianjaka; Razafimahatratra, Razafimahatratra; Antoine, Herisoa; Christian, Manjovelo Sambany; Daniel, Razafindrazanakolona; Ngbolua, Koto-te-Nyiwa; Baholy, Robijaona Rahelivololoniaina; Ruphin, Fatiany Pierre
Budapest International Research in Exact Sciences (BirEx) Journal Vol 6, No 3 (2024): Budapest International Research in Exact Sciences, July
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v6i3.7884

Abstract

The primary objective of this study is to explore sustainable alternatives to address the accumulation of waste resulting from the sisal exploitation in South Amboasary. Laboratory tests involving 8,000 g of defibration residues mixed with 1,600 g of inoculum over 69 days produced 355 liters of biogas, equating to 335 L/kg of dry matter with a methane content of 58% and a lower calorific value of 20,807 kJ/Nm³. These results suggest that biomethanation can valorize the 212,630 tons of sisal waste available annually, potentially replacing the 2,030 m³ of diesel consumed each year and meeting the domestic fuel needs of 16,575 households with eight members each. Additionally, a production of 137,800 tons of compost is projected to prevent the emission of approximately 7,000 tons of CO₂-equivalent toxic gases into the atmosphere. The technical feasibility studies for infrastructure implementation and project organization address several issues: local treatment of organic waste, creation of local jobs, energy independence, agricultural sustainability, and economic development.
Phytochemical analysis of Flacourtia ramontchi (Salicaceae) Mamy, Andrianarijaona; Fabri, Ralaivaon-dratsitonta Jumaël Edith; Ruphin, Fatiany Pierre; Baholy, Robijaona Rahelivololoniaina
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 3 (2025): Budapest International Research in Exact Sciences, July
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i3.8112

Abstract

Flacourtia ramontchi is a medicinal plant deeply rooted in the traditional practices of Madagascar, where a decoction from its leaves and bark is commonly used to treat respiratory ailments such as asthma and dry coughs. The present study was conducted to provide a scientific foundation for these traditional uses by performing a comprehensive phytochemical analysis. The investigation involved the successive maceration of powdered bark and leaf samples using a series of solvents of increasing polarity, namely n-hexane, dichloromethane (DCM), and methanol. This extraction process yielded a variety of crude extracts, with the highest yields for both plant parts obtained from the non-polar hexane solvent, suggesting a rich presence of non-polar constituents. Phytochemical screening of the extracts identified a significant abundance of secondary metabolites with recognized therapeutic value. The bark and leaves were particularly rich in polyphenols, tannins, and flavonoids, compounds known for their antioxidant, anti-inflammatory, and antimicrobial properties, which scientifically validate the plant's traditional medicinal applications. Following the preliminary screening, the DCM bark extract was selected for further separation and purification. Thin-layer chromatography (TLC) was optimized to an ideal hexane/DCM (30:70) mobile phase, revealing four dominant constituents. This strategic approach led to the subsequent isolation of a pure compound via column chromatography. The fraction with the highest yield was chosen for structural elucidation. The structure of the isolated compound was determined using mass spectrometry (MS) and nuclear magnetic resonance (NMR) spectroscopy, including ¹H NMR and ¹³C NMR. Spectral data analysis, specifically the molecular ion peak in the mass spectrum at m/z 300 and the carbon and proton signals from the NMR data, confirmed the compound to be spruceanol, a diterpenoid. This finding is a significant contribution to the understanding of the plant’s chemical composition.
Co-Authors Antoine, Herisoa Baholy, Robijaona Rahelivololoniaina Boni, Randrianjaka Christian, Manjovelo Sambany Daniel, Razafindrazanakolona Fabri, Ralaivaon-dratsitonta Jumaël Edith Mamy, Andrianarijaona Marie, Tolojanahary Jean Ngbolua, Koto-te-Nyiwa Razafimahatratra, Razafimahatratra Tsirombahy, Soja Lahara