The conversion of filamentous fungus-based feedstock into Biodiesel holds potential as a sustainable and eco-conscious method for producing alternative liquid fuels. This study examined the comparison of individual Fatty Acid Methyl Esters (FAME) of Aspergillus niger and Curvularia lunata with the consortium of both filamentous fungal cocktail Fatty acid methyl esters (cFAME), following a transesterification process that turned the fungal lipids into myco-based biodiesel productions. cFAME weighs 23.89 g and accumulates to 20.43 g of lipid yield, with 86% of cellular lipids; in contrast, A. niger weighs 12.65 g and pile up 9.5 g of lipid yield, with 75% of cellular lipid, also C. lunata exhibits 8.35 g of dry weight with 4.89 g of lipid concentration, with 59% of cellular lipids. A. niger was known to contain C16-C18 saturated and unsaturated fatty acids possess LAME (C18:2), OAFA (C18:1), and PAME (C16:0) were shown in high percentages accounted for 86.6% in A. niger. The results showed that PUFA was predominant over MUFA and SFA. C. lunata chiefly produces C16 and C18 fatty acids, which are considered favorable for combustion properties with oleic acid (C18:1), linoleic acid (C18:2), palmitic acid (C16:0), and stearic acid (C18:0), on the comparison. However, the FAME profile of C. lunata occupies only 39.07% of the biodiesel quality. Pentadecanoic acid, palmitic acid, palmitoleic acid, Oleic acid, Linolenic acid, Linoleic acis, and Hexanoic acid with the carbon range of C6:0 - C18:3 were observed in cFAME. Based on the biodiesel yield, cFAME scored 20.55%, whereas A. niger with 11.05 and C.lunata 2.45%, respectively. The presence of methyl esters containing various long-chain fatty acids indicates very effective biodiesel assets, as confirmed by GC-MS analysis, which evidenced ignition efficiency, among others. cFAMEs were impacted by high ignition efficiency with > 4 min. Consortium strategies seize attention in different dimensions and have been confirmed by their upregulation in their fatty acid profiles; in the future, the combination of high lipid holders among the fungal kingdom can be an alternative in myco-based biodiesel production.

27 Mar 2025·Asian Journal of Biological and Life sciences

Investigation of Physicochemical Characteristics, Elemental Composition and GCMS Studies on Steel Plant Effluent Treated with Indigenous Bacteria

Author: Dharmackan, Jayasheela ; Durairaj, Aarthi

Steel plant effluents pose significant environmental challenges due to the high concentrations of contaminants such as heavy metals and organic compoundsThis study aimed to evaluate the potential of indigenous bacteria, specifically Shewanella sp. strain DADJ and Bacillus licheniformis, as bioremediation agents for the treatment of steel plant effluent.Two indigenous bacterial strains, Shewanella sp. strain DADJ and Bacillus licheniformis, were isolated and exposed to steel plant effluent for a 15-day period.The physicochem. properties of untreated and treated effluent, including pH, Total Dissolved Solids (TDS), COD (COD), and BOD (BOD), were analyzed.Addnl., the reduction of iron and other heavy metals (cadmium, arsenic, chromium, lead, and mercury) in the effluent was assessed using ICP-OES spectroscopy.Organic compounds in the effluent were analyzed both before and after treatment using Gas Chromatog.-Mass Spectrometry (GC-MS).The results showed that the untreated effluent had high concentrations of iron and heavy metals.After treatment with the bacterial strains, the iron content was drastically reduced to 18.12 ± 3.15μg/mL and 23.08 ± 0.61μg/mL in the effluents treated with Shewanella sp. strain DADJ and Bacillus licheniformis, resp.The ICP-OES anal. revealed significant reductions in cadmium, arsenic, chromium, lead, and mercury.GC-MS anal. indicated that the organic compounds, including 1,2-Benzenedicarboxylic acid, mono(2-ethylhexyl) ester, and Silane, dimethyl(2-naphthoxy) heptyloxy, were present only in the treated effluent, suggesting the transformation of existing chem. compounds into novel ones.The Indigenous bacterial strains Shewanella sp. strain DADJ and Bacillus licheniformis demonstrated effective bioremediation potential for treating steel plant effluent by significantly reducing iron, heavy metals, and organic contaminants.

01 Mar 2025·INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH

DETERMINANTS OF EMPLOYEE ENGAGEMENT IN IT INDUSTRY – AN EXPLORATORY STUDY

Author: Manimalathi, P.

Employee engagement deals with the commitment of the employees towards their work and how they get motivated to contribute to organisations success with an enhanced sense of their own well-being. It is an approach that increases the chances of business success, contributing to organisational and individual performance, productivity and well-being. The main aim of the study is to identify the factors which affect employee engagement in IT industry in Coimbatore. The study was based on the primary data, which was collected with a help of well-structured and pretested interview schedule, administered to 161 employees in various IT industries in Coimbatore. Exploratory Factor Analysis is used to identify the underlying factors. The results found that ve factors were identied as the important determinants of employee engagement, which contributed to 64 per cent of the total variance.

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