Generally, in these studies the chitosan is considered to be a bacteriocidal (kills the live bacteria or some fraction therein) or bacteriostatic (hinders the growth of bacteria but does not imply whether or not bacteria are killed), often with no distinction be- tween activities. Similarly to bacteria, the chitosan is also found to posses antifungal activity and the activity is assumed to be fungi static rather than fungicidal with a potential to communicate reg ulatory changes in both the host and fungus. Generally, chitosan has been reported as being very effective in inhibiting spore germination, germ tube elongation and radial growth of fungi (Goy Britto de Assis, 2009) Chitin (CH) reinforced SPI bioplastics were prepared by Zheng Tan, Zhan, and Huang (2003), and it was found that the added CH ntas a filler cannot strongly interact with SPl molecules, which results in phase separation in blends. However, the incorporation of chitin, similar to cellulose, decreased the breaking elongation, but ncreased the tensile strength and rigidity of the materials, result ing from the rigid nature of the CH molecules. When the CH content was higher than 10 wt%, the water absorption of the blends were obviously lower than that of the sheets without CH, resulting from the formation of a CH framework in the blends Soy proteins and chitosan are not completely miscible, possibly due to a weak inter-molecular interaction reflected from the shift in the NH and C-a o bands in FTIR spectra of the blends compared to pure chitosan (Silva et al., 2007). Due to their opposite charges nteracted with anionic SPI to form a chitosan cation