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Characterization of formate dehydrogenase from Trametes versicor for formate production from CO2 gas

XV World Forestry Congress, 2-6 May 2022










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    Characteristic analysis of the mucilage from Abelmoschus manihot
    XV World Forestry Congress, 2-6 May 2022
    2022
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    The mucilage obtained from the roots of Abelmoschus manihot is an important material in the manufacture of Hanji (Korean traditional paper) for dispersity of Broussonetia kazinoki bast fibers and separation of each paper from a pile of wet papers. A. manihot called 'Dakpul' in Korea is an annual herbaceous flowering plant belonging to the Malvaceae family. To understand the role of A. manihot mucilage in the manufacture of Hanji, it is necessary to study its chemical properties. In this study, chemical characterization of mucilage obtained from A. manihot root was carried out using Thermogravimetry analysis (TGA), Pyrolysis-Gas Chromatography/Mass Spectrometry (Py-GC/MS), Fourier Transform-Infrared Spectroscopy (FT-IR). The constituent of monomeric sugar (Rhamnose, Arabinose, Xylose, Mannose, Galactose, Glucose) and uronic acid (Galactronic acid, Glucuronic acid) components were also analyzed after sulfuric acid hydrolysis. Keywords: Research ID: 3623114
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    Comparative study on the efficacy of biobased wood preservative over conventional wood preservatives against fungi and termites
    XV World Forestry Congress, 2-6 May 2022
    2022
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    The current focus of wood preservation research is on developing wood preservatives from natural and environmentally compatible compounds for industrial application. Liquefaction of wood is one of the promising approaches to utilize woody waste where the wood meal is converted into a chemically active liquid with the help of a liquefying agent like polyhydric alcohols, phenol, cresol, and plant-based solvent as CNSL and Cardanol. Conventional wood preservatives like CCA, ASCU, Creosote, Chlorpyriphos based temic and termisel as synthetic chemicals were in use for a long time, has also been used in prescribed proportion. The efficacy and economic suitability of liquefied wood as a wood preservative along with conventional wood preservative against termite and fungi have been studied. Wood samples were impregnated with both conventional and liquefied wood diluted with methanol and were subjected and evaluated as per Bureau of Indian Standards (BIS) in terms of its antifungal (IS4873, Part I:2008) and termiticidal activities (IS4833:1993) accelerated termite graveyard test and fungal resistance test. The level of impregnation of liquefied wood in wood was estimated by determining the weight percent gain. In the graveyard test, samples were periodically observed for 24 months. The results indicated that Samples treated with phenol-assisted liquefied wood, CNSL based wood polyols, Cardanol based polyols exhibited better results as compare to conventional synthetic wood preservatives both in visual observation and percentage weight loss as compare to initial condition and untreated control samples. The percentage weight loss of liquefied wood polyols (phenol, CNSL, and cardanol individually) treated wood sample was ranging from only 5-20% of its initial weight; wood treated with preservatives (CCA, ASCU, Creosote and chlorpyriphos) shows % weight loss varied from 40- 60% and did not exhibit better resistance against termite and fungi as compared to the untreated samples. The treated samples were also exposed to fungus for 16 weeks. The fungicidal traits of liquefied wood polyols (phenolated, CNSL, and cardanol individually) treated wood showed higher antifungal efficacy against both white rot and brown rot of wood, conventionally wood treated preservatives (CCA, ASCU, Creosote and chlorpyriphos) shows low efficacy against termite and fungus. Since wood residue is a byproduct of primary and secondary wood processing industry whereas CNSL and Cardanol are by-products of Cashewnut processing unit, so its utilization as wood preservatives will be a value-added product to the wood-based Industry... Keywords: Preservatives, Impregnation, Liquefied wood, antifungal ID: 3625875
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    Precipitation of lignins from organosolv and kraft black liquor of bamboo: Influence of functionality using Fourier Transform Infrared Spectroscopy (FTIR)
    XV World Forestry Congress, 2-6 May 2022
    2022
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    In Nigeria, bamboo is underutilized, and Lignin can be extracted from these bamboos for high value-added use. In this research, the influence of Functionality on the properties of black liquor and isolated Lignin from kraft and organosolv processes using Bambusa vulgaris as biomass source were evaluated. FTIR (Fourier Transform Infrared Spectroscopy) was used to determine the Functionality of Lignin at different volume ratios. The characteristic bands located between 3500-3000 indicate the existence of alcohol and carboxylic groups in Lignin isolated from Ethanol, Peroxyformic, and Kraft black liquor, which resonates at almost the same wavelength. It implies that the Lignin isolated from Aceticformic black liquor does not provide any information about the secondary structure of this functional group. The Functionality of Organosolv and Kraft lignin showed that Alcohol and Carboxylic Acids, Alkanes and Alkyls, Carbonyls, Alkenes, Amide, and Alkyl halides are functional groups present with a similar structure for all the Lignin isolated from Organosolv and Kraft black liquor. These results confirmed that the underutilization of bamboo could be plunged into making value- added products such as natural polymer in transparent wood, fertilizers, drugs, resins, and adhesive formulation. Exploring these new research areas could provide potential benefits for consumers, the manufacturing industry, the environment, and the green pathway to growth and sustainability. Keywords: Lignin; Bamboo; FTIR; Organosolv Lignin; Kraft Lignin ID: 3486307

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