%0 Journal Article
	%A Orose Rugchati and  Khumthong Mahawongwiriya and  Kanita Thanacharoenchanaphas
	%D 2013
	%J International Journal of Agricultural and Biosystems Engineering
	%B World Academy of Science, Engineering and Technology
	%I Open Science Index 81, 2013
	%T Some Characteristics of Biodegradable Film Substituted by Yam (Dioscorea alata) Starch from Thailand
	%U https://publications.waset.org/pdf/16592
	%V 81
	%X Yam starch obtained from the water yam (munlued)
by the wet milling process was studied for some physicochemical
properties. Yam starch film was prepared by casting using glycerol as
a plasticizer. The effect of different glycerol (1.30, 1.65 and
2.00g/100g of filmogenic solution) and starch concentrations (3.30,
3.65 and 4.00g /100g of filmogenic solution) were evaluated on some
characteristics of the film. The temperature for obtaining the
gelatinized starch solution was 70-80°C and then dried at 45°C for 4
hours. The resulting starch from munlued granular morphology was
triangular and the average size of the granule was 26.68 μm. The
amylose content by colorimetric method was 26 % and the gelatinize
temperature was 70-80°C. The appearance of the film was smooth,
transparent, and glossy with average moisture content of 25.96% and
thickness of 0.01mm. Puncture deformation and flexibility increased
with glycerol content. The starch and glycerol concentration were a
significant factor of the yam starch film characteristics. Yam starch
film can be described as a biofilm providing many applications and
developments with the advantage of biodegradability.

	%P 834 - 837