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Muhammad Ridwan
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Budapest International Research in Exact Sciences (BirEx Journal)
Published by Budapest International Research and Critics University Journal
ISSN : 26557835     EISSN : 26557827     DOI : DOI: https://doi.org/10.33258/birex
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Physics Transportation
Budapest International Research in Exact Sciences (BirEx-Journal) is a peer reviewed journal published in January, April, July, October welcome research paper in Medical Science, Agriculture Science, Biological Science, Engineering Science and other related areas and it is published in both online and printed version
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October" : 6 Documents clear
Optimizing Sulfuric Acid 98% Leaching: Lithium Recovery from Madagascar Spodumene Rija, Rabearisoa Solotiana; Baholy, Robijaona Rahelivololoniaina
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i4.8114

Abstract

A comprehensive study of lithium extraction from Vakinankaratra, Madagascar spodumene through sulfuric acid digestion and subsequent aqueous leaching is presented. The process initiates with calcination, a pretreatment designed to induce the alpha-to-beta phase transformation of spodumene, resulting in decreased density, increased friability, and enhanced chemical reactivity. Characterization of the ore, employing X-ray fluorescence (XRF) and atomic absorption spectroscopy (AAS), revealed a mineralogical composition dominated by oxides of lithium, silicon, aluminum, potassium, and fluorine, confirming the presence of economically relevant lithium concentrations. The investigation explored the influence of reaction time, varying from one to three hours, at elevated digestion temperatures. Rigorous optimization of experimental parameters was conducted, yielding significant insights into the leaching process. The findings demonstrate a strong correlation between lithium extraction efficiency and the ore-to-acid ratio, temperature, and, most notably, reaction time. Under optimized conditions, specifically a reaction temperature of 250°C and a duration of three hours, a 92% lithium extraction rate was achieved for both calcined spodumene and lepidolite samples. This study provides a detailed understanding of the critical parameters governing lithium extraction from Malagasy spodumene, contributing to the development of efficient and industrially applicable extraction methodologies.
Integrated Valorization of Malagasy Micro-Crustaceans : Caridina Serratirostris, Caridina Typus and Acetes Erythraeus for the Blue Circular Economy Fifaliana, Rasolofoson Joharisoa; Baholy, Robijaona Rahelivololoniaina
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i4.8120

Abstract

Chronic malnutrition in Madagascar's Haute Matsiatra region is linked to severe deficits in animal protein and micronutrients. This study evaluates the nutritional composition and market dynamics of three indigenous micro-crustacean species (collectively known as patsa or chevaquine) for sustainable valorization within a Blue Circular Economy framework.Nutritional analysis established the Red Shrimp (Caridina serratirostris) as a superior functional food. It possesses extraordinary density of critical nutrients, including 46,174 ppm of Calcium and an unparalleled 5,360 ppm of Iron (Fe was undetectable in other varieties). Furthermore, its high 22.37 % Lipid content makes it a crucial calorie-dense resource, yielding 1,607.8 kcal/100 g. Market data from Anjoma Market indicated a high-value, high-demand profile for the Red Shrimp, but also significant supply chain fragility. In contrast, the White Shrimp (Acetes erythraeus), despite low market value, showed greater commercial stability, with up to 5.4 % of vendors selling 10 to 50 kg/day. The proposed valorization strategy is two-tiered: The limited, high-value Red Shrimp supply should be dedicated to nutritional powder fortification, while the higher-volume White Shrimp should be directed toward aquaculture feed concentrates. Overcoming pervasive constraints—especially the high > 88 % Moisture content and lack of cold storage—mandates the immediate deployment of localized solar drying technologies to transform this biomass into stable, high-value ingredients. 
Integral Valorization of the Invasive Lissachatina fulica in Madagascar : A Zero-Waste Pathway to Nutritional Security and the Green Circular Economy Odon, Fetisondraibe Zafimamonjy Louis; Daniel, Razafindrazanakolona Andriamanjato; Tahina, Rabeharitsara Andry; Tsaroana, Verofaniry Nomena; Baholy, Robijaona Rahelivololoniaina
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i4.8123

Abstract

Confronting critical imperatives of global food security and environmental sustainability, this investigation delineated the nutritional and mineral composition of the invasive African Giant Snail, Lissachatina fulica, thriving in Madagascar. Using standard biochemical assays and Total Reflection X-ray Fluorescence (TXRF) spectroscopy on a cohort of 30 individuals, the shell, flesh, and mucus were precisely evaluated. The resultant data reveal a compelling paradigm for integral bioresource valorization based on functional complementarity. The flesh exhibits a remarkable protein concentration of 63.58 % on a dry matter (DM) basis and contains substantial levels of essential micronutrients, notably Magnesium (1.57 % DM) and Iron (0.42 % DM). This profile validates the snail as a high-quality, sustainable protein resource capable of significantly fortifying regional food security initiatives. The mucus fraction is notably distinguished by its richness in protein (74.13 % DM) and Silicon (1.27 %), emphatically corroborating its high potential for therapeutic and cosmetic dermatological applications. The shell, overwhelmingly calcareous, boasts an elevated calcium concentration of 18.15 %, positioning it as a compelling source for nutritional supplements or advanced biomaterials. Crucially, the rigorous chemical analysis established the absence of detectable levels of toxic heavy metals (Pb, Cd, As, Hg) across all fractions, incontrovertibly affirming the safety and innocuousness of these derived materials. This study decisively substantiates the potential for harnessing a problematic invasive organism as a key green bioresource, validating the deployment of a holistic, "zero-waste" circular economy approach contributing synergistically to both nutritional security and sustainable economic development in Madagascar. 
Vetiver Root Extract as a Biopesticide Against Callosobruchus maculatus F., insect destructive of cowpea seeds (Vigna unguiculata L. Walp.) in stock Dyno, Nambavelo; Sambany, Manjovelo Christian; Nicole, Ravelomanantsoa Ramanambe; Koto-Te-Nyiwa, Ngbolua Jean Paul; Baholy, Robijaona Rahelivololoniaina
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i4.8129

Abstract

This investigation rigorously assessed the bioinsecticidal potential of methanolic root and leaf extracts derived from Vetiveria zizanioides sourced from three distinct Malagasy chemotypes (Sambava, Fianarantsoa, and Tsiroamandidy). The primary goal was to validate a sustainable, botanical alternative for preserving stored cowpea (Vigna unguiculata) against the destructive pest, Callosobruchus maculatus. The vetiver root extracts demonstrated potent, dose-dependent efficacy across all bioassays. Specifically, at concentrations of 60 μl/l of air or higher, the extracts induced complete adult mortality within 72 hours via contact, and nearly total mortality within 48 hours via fumigation. The Tsiroamandidy chemotype proved particularly efficacious, achieving total mortality by the second day at the maximum dose. Critically, the extracts exhibited profound ovicidal activity, resulting in zero egg hatchability even at the minimum concentration of 10 μl/l, completely suppressing reproduction. This decisive biological action translated into significant commodity protection: seed weight loss, which was 25% in untreated controls, was virtually eliminated at the 60 μl/l threshold, consequently preserving seed quality and germination viability. In sharp contrast, the leaf extracts showed severely limited efficacy, achieving a maximum mortality of only 40% even at the highest tested dose. These findings conclusively validate the vetiver root extract as a highly promising, natural biopesticide for the sustainable management of C. maculatus.
Terroir-Driven Efficacy : Harnessing the Chemogeographical Variation in Vetiveria zizanioides Essential Oils for Stage-Specific Management of the Cowpea Weevil (Callosobruchus maculatus F.) Dyno, Nambavelo; Sambany, Manjovelo Christian; Nicole, Ravelomanantsoa Ramanambe; Koto-Te-Nyiwa, Ngbolua Jean Paul; Baholy, Robijaona Rahelivololoniaina
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i4.8125

Abstract

The global reliance on synthetic pesticides for preserving stored cowpea (Vigna unguiculata) seeds is jeopardized by rising insect resistance and food contamination, necessitating urgent exploration of safe, botanical alternatives. This study evaluates the biocidal and repellent potential of essential oils extracted from three geographically distinct Malagasy chemotypes of vetiver (Vetiveria zizanioides) Sambava, Fianarantsoa, and Tsiroamandidy against the devastating stored-product pest, Callosobruchus maculatus F. Chemical profiling revealed distinct compositions, with the Tsiroamandidy essential oil notably enriched in the sesquiterpenoids Khusimol (19.1%) and Zizanoic acid (15.1%). Bioassays demonstrated profound insecticidal effects proportional to concentration (10 to 80μl/l). The oils exhibited rapid fumigant toxicity, with all three chemotypes achieving 100% adult mortality at 60μl/l by 48 hours of exposure. Furthermore, the oils proved to be powerful reproductive inhibitors. Female fertility was completely suppressed at a concentration of 30μl/l, drastically reducing oviposition from the control average of 122 eggs. Most critically, the ovicidal activity was exceptional: the egg hatching rate and subsequent adult emergence (viability) were both completely inhibited (0%) even at the lowest tested dose of 10μl/l (control hatching rate : 82%). Beyond direct lethality, the essential oils demonstrated significant protection through repellency, classifying in the Highly Repellent (Class V) category at concentrations ≥60μl/l. These findings establish regional V. zizanioides essential oils as exceptionally potent, multi-action biopesticides, offering a sustainable and highly effective solution for cowpea preservation. 
Integrated Phytomineral Synergy: The Essential Role of Oligoelements (Mg, Fe, K) in the Antioxidant and Anti-infective Activities of Myrothamnus moschatus Hanitriniaina, Natafita Carène; Razafimahatratra, Jean Hugues; Soavina, Silvère Augustin; Manjovelo, Christian Sambany; Ngbolua, Koto-Te-Nyiwa Jean Paul; Fatiany, Pierre Ruphin; Rahelivololoniaina, Baholy Robijaona
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 4 (2025): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i4.8126

Abstract

Myrothamnus moschatus, commonly known as the "resurrection plant," stands as an emblematic species of Southern Madagascar, traditionally valued as a tonic and an anti-infective remedy. While prior investigations primarily focused on the volatile fraction (essential oils), the present study pioneers the exploration of the non-volatile mineral fraction in relation to the plant's significant biological activities. Elemental analysis of the aerial part's powder revealed a high content of magnesium (1.17%), iron (0.60%), and potassium (0.50%), with no detectable traces of heavy metals (Pb, Cd, Hg, As). Simultaneously, extracts exhibited high antioxidant activity (IC50 =12.99μg/mL), a moderate yet significant antiplasmodial inhibition (Plasmodium berghei, 34.44% at 500mg/kg ; p=0.01395), and marked antibacterial activity against Staphylococcus aureus (16.25mm). The confluence of a protective mineral profile and measured bioactivities confirms that the plant's efficacy stems not only from its secondary metabolites but also from functional inorganic cofactors, thereby establishing it as a true regenerating tradiphytoremedy. These findings reposition M. moschatus as an integrative pharmacognostic resource, paving the way for standardized phyto-mineral formulations for anti-infective and prophylactic purposes. 

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