An Experimental Study on Hydrothermal Treatment Essay

An Experimental Study on Hydrothermal Treatment Essay

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Sweet sorghum bagasse powder was used as the substrate for the treatment studies. Sweet sorghum variety CSSH-45 was obtained from the Department of Plant Science of McGill University. The plants were harvested, defoliated and stems were crushed to extract sweet juice from it. The bagasse obtained was immediately cold washed to remove the free sugars present on it (Hou-min Chang, Richard Phillips et al. 2013). It was then dried in a hot air oven at 500C for 72 hours to obtain constant dry mass. The dried bagasse was chopped using scissors to 1-2 cm long pieces and powdered to small particles using a blender-grinder (Homeland Housewares, LA, USA). The grinding time was two minutes and sample mass was ten grams for all samples in order to obtain uniform particle size distribution in all the samples used for the treatments. The powder was used as such without any further sieving in order to obtain samples containing all parts of the stem because sieving of the pulverised samples will separate the more fibrous bark portions of the stem from the springy pith portions of the stem (Billa, Koullas et al. 1997). The powder from each grinding operations were put into and stored in an air-tight container. The powder was mixed well before taking samples for each experimental treatment and analyses.

Hydrothermal treatment of sweet sorghum bagasse powder
Hydrothermal treatment of the SSB powder was carried out using tap water in an autoclave (DSE-8000, NAPCO, USA). The treatment temperature was selected as 394 K since the significant quantity of heat required to achieve this temperature can be recovered through proper process design (Teramoto, Lee et al. 2009) and will be more effective than simple boiling for the treatment of lignocellul...

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Van Soest, P. v., J. Robertson, et al. (1991). "Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition." Journal of dairy science 74(10): 3583-3597.
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