Situable condition for hydrolysate preparation from Jatropha curcas Linnaeus. branch using steam explosion technique for xylitol production
2010
Panu Somkliang(Kasetsart University, Bangkok (Thailand). Faculty of Agro-Industry. Department of Biotechnology) E-mail:sk_panu@hotmail.com | Sawitri Chuntranuluck(Kasetsart University, Bangkok (Thailand). Faculty of Agro-Industry. Department of Biotechnology) | Vittaya Punsuvon(Kasetsart University, Bangkok (Thailand). Faculty of Science. Department of Chemistry) | Pilanee Vaithanomsat(Kasetsart University, Bangkok (Thailand). Kasetsart Agricultural and Agro-Industrial Product Improvement Institute)
This research is comparing efficiency of xylose fractionation from Jathopha curcas Linnaeus. branch between pre-hydrolysis+steam explosion processes and steam explosion + post-hydrolysis processes. Jathopha curcas Linnaeus. branch consist of cellulose 41.25 percent pentosan 30.59 percent lignin 26.98 percent and ethanol/benzene extractive 1.68 percent based on 100 g. dry weight. The result of prehydrolysis (soaking with sulfuric acid 1 percent w/v) in 1 day and steam explosion at 200 deg C in 1 minute had the maximum xylose 6.82 percent and had the efficiency's xylose fractional 29.23 percent of the total xylose in Jathopha curcas Linnaeus. branch. For the steam explosion at 200 deg C in 3 minute and posthydrolysis (3 percent sulfuric acid w/v) at 121 deg C in 45 minute gave the maximum xylose at 6.33 percent and had the efficiencys xylose fractional 27.13 percent of the total xylose in Jathopha curcas Linnaeus. branch. The results of this study are the best of efficiency of xylose fractionation from Jathopha curcas Linnaeus. branch between two process are not different. (27.13-29.23 percent of the total xylose in Jathopha curcas Linnaeus. branch.) But pre-hydrolysis+steam explosion processes are none complicated and faster than steam explosion + post-hydrolysis processes. Therefore pre-hydrolysis+steam explosion processes condition for preparing xylose to produce xylitol.
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