This work was supported in part by the National Science Council, Taiwan, Republic of China, under Grant NSC-100-2221-E-244 -010.
 C. H. Wang, Fermentation Strategies for Biomass Hydrogen Production Using Anaerobic Bacterial Microflora, Ph.D. Dissertation, Department of Chemical Engineering, Feng Chia University, Taichung, Taiwan, 2006.
 W. H. Chen, K. L. Kuo, W. S. Huang and J. P. Wang, Development of Cellulosic Ethanol Technology, Agricultural Biotechnology Industry Quarterly 9, 62, 2007.
 R. B. Lin, Different Pretreatment of Agricultural Waste in the Hydrolsis of Cellulose Enzyms - An Example of Pinapple Leaf Cellulose, Master Dissertation, Department of Biomechatronics Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, 2008.
 S. K. Tai, Characterizations and Phylogeny of Thermostable Cellulolytic Bacterial Isolates, Ph.D. Dissertation, Department of Biological Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan, 2004.
 F. I. Ahmed and C. K. Russell, “Synergism Between Ultrasonic Waves and Hydrogen Peroxide in the Killing of Micro Organisms,” Journal of Applied Bacteriology, Vol. 39 (1), pp. 31-40, 1975.
 D. A. Dooley, S. Z. Child, E. L. Cartensen and M. W. Miller, “The Effects of Continuous Wave and Pulsed Ultrasound on Rat Thymocytes In Vitro,” Ultrasound in Med. & Biol, Vol. 9, pp. 379-384, 1983.
 D. W. Van, “The Effect of Ultraviolet Light, Cavitational Flow and Ultrasound on Protozoan Cysts and Oocysts, Bacteriophages and Clostridium,” Water SA, Vol. 28, pp. 16-22, 2002.
 D. M. Broda, “The Effect of Peroxyacetic Acid-based Sanitizer, Heat and Ultrasonic Waves on the Survival of Clostridium Estertheticum Spores in Vitro,” Letters in Applied Microbiology, Vol. 45(3), pp. 336-341, 2007.
 Wen-Kuei Chiu, Protein Variation of Paramecium in Ultrasonic Field, Master Dissertation, Department of Biomechatronics Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan, 2004.
 A. C. Chang, “Study of Ultrasonic Wave Treatments for Accelerating the Aging Process in a Rice Alcoholic Beverage,” Food Chemistry, Vol. 92, pp. 337-342, 2005.
 Y. P. Guo, S. H. Kim, S. H. Sung and P. H. Lee, “Effect of Ultrasonic Treatment of Digestion Sludge on Bio-hydrogen Production from Sucrose by Anaerobic Fermentation,” International Journal of Hydrogen Energy, Vol. 35, pp. 3450-3455, 2010.
 Shao-Yi Hsia, Ching-Hsiung Wang and Yu-Tuan Chou, -Study on Biohydrogen Production of Dark Fermentation with the Stimulation of Ultrasonic,” 2012 International Conference on Information, Communication and Engineering, Dec. 15-20, Fuzhou, Fujian, P.R. China, No. 1391,2012
 Ch. E. Wyman, Twenty Years of Trials, Tribulations and Research Progress in Bioethanol Technology, Appl. Biotech, Vol. 91-93, p. 5021, 2001.
 S. Subramaniyan and P. Prema, Biotechnology of Microbial Xylanases: Enzymology, Molecular Biology, and Application, Crit. Rev. Biotechnology, Vol. 22, pp. 33-64, 2002.
 C. S. Gong, In: Tsao, G.T.(Ed.), Recen Advancens in D-xylose Conversion by Yeasts, Annual Reports of Fermentation Processes, Academic Press, Vol. 6, pp. 253-291, 1983.
 Shao-Yi Hsia and Shiuh-Kuang Yang, “Enhancing algal growth by stimulation with LED lighting and ultrasound,” Journal of Nanomaterials, Vol. 2015, Article ID 531352,2015.
 Shao-Yi Hsia, “Optimization of Microextrusion Preforming using Taguchi method,” Mathematical Problem in Engineering, Vol. 2013, Article ID 305797, 2013.
 B. M. Cappelletti, V. Reginatto, “Fermentative Production of Hydrogen from Cassava Processing Wastewater by Clostridium Acetobutylicum,” Renewable Energy, Vol. 36(12), pp. 3367-3372, 2011.