Typha capensis
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Typha capensis






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    Typha capensis Typha capensis Document Transcript

    • Typha for biorefinery Yakindra Prasad Timilsena Food Research Officer, Department of Food Technology and Quality Control, Kathmandu Email: yakendra.timilsena@gmail.com Abstract Objective Typha grass is an invasive and obnoxious wetland herbaceous plant with The overall objective is to explore the potentiality of the annual productivity of more than 50 ton dry matter per hectare. It Typha capensis as feedstock for biorefinery. Specifically- has been used in the treatment of various diseases since ancient times. Compositional analysis demonstrated approximately 80% sugars and • To determine the EOL yield and Klason lignin content of very low lignin content (<20%) in dry biomass basis underpinning its the pulp after two step pretreatment potential use as food and for conversion processes. It has also been marked for its good anti microbial properties. Strong capacity of typha • To compare the enzymatic hydrolysis yield of sugars for removing contaminants such as heavy metals and inorganic nutrients • To characterize typha lignin from waste waters established it as a promising aquatic macrophyte for phytoremediation. 13C NMR analysis of typha lignin revealed significantly higher S/G ratio (55:15) suggesting its easier delignification and better Results and discussion pulp yield during pretreatment process. Enzymatic hydrolysis, in addition, demonstrated efficient cellulose to glucose conversion alleviating downstream processing to food, chemical or fuel. In addition to its plenteous availability, high biomass productivity, easier delignification and enzymatic hydrolysability Typha deserves a promising biomass feedstock for tropical food, environment, medicine or biorefining sector. Methodology Layout of 2-step pretreatment and enzymatic hydrolysis • One step pretreatment process is sufficient • Easier delignification and better enzymatic digestibility • NMR shows higher S/G ratio (3.7) • FTIR shows its similarity with other herbaceous lignin • SEC analysis of lignin revealed its high molecular weight and polydispersity index. Enzymatic hydrolysability of typhaGel permeation Chromatographic characterization of typha lignin Carbon NMR of typha lignin (CEL) Conclusion Almost 50% of the plant is comprised of a• High productivity (>50 ton dm/ha/year underground rhizome system which possess 40%• Simple and low severity pretreatment is sufficient starch and sugar (Andrew and Pratt, 1981).• Good enzymatic hydrolysability• High S/G ratio and easier delignification