00000ctm a22000003a 4500 UP-99796217611678092 Buklod 20150710161252.0 a r |||| u| ta 150710s2015 xx d r |||| u| (iLib)UPD-00246509450 DCHE rda eng LG 993.5 2015 F66 R53 Ribuca, Khareena Dacillo author Physical and mechanical properties of banana flour/Kappa-Carrageenan biodegradable plastic film packaging Khareena D. Ribuca ; Ma. Leonora dL. Francisco, adviser. Quezon City College of Home Economics, University of the Philippines Diliman 2015. xiii, 70 leaves color illustration, + 1 CD ROM (4 ¾ in.) 28 cm. text rdacontent unmediated rdamedia volume rdacarrier Thesis Classification: F Thesis (B.S. in Food Technology)--University of the Philippines Diliman 10 June 2015. Includes bibliographical references and appendices. The physical and mechanical properties of saba banana/kappa-carrageenan bioplastic was investigated in this study. Water activity (Aw) , moisture content, and density of the films decreased as the amount of k-carrageenan increased. Pure banana flour bioplastic had the highest Aw (0.535), moisture content (42.4975%) and density (1.5579 g/cm3). K-carrageenan, when incorporated in solutions, can aggregate thus lowering interactions with water resulting in lower amount of water present in the film. This also resulted in an increase in tensile strength value and decrease percentage elongation at break as the k-carrageenan content is increased. Treatment D (with 50% k-carrageenan) exhibited the highest tensile strength at 6.7046 MPa and lowest percentage elongation at break among the films treated with k-carrageenan at 14.7%. The rigidity caused by the aggregation strengthened the film, at the same time made it less flexible. On the other hand, water solubility of the film increased as the amount of k-carrageenan was increased, due to the greater amount of solids that could be easily hydrated by water due to the presence of a negative charge in the said compound. No significant differences were observed between the water vapor permeance values of the films due to the hygroscopicity and hydrophilicity of the components, leading to interference in the mechanism. The values observed were around 10^-7 g ·Pa^-1·s^-1·m^-2 making the films unsuitable for packaging of fresh goods due to its high permeability. Plastic films Permeability. Plastics in packaging Philippines. Francisco, Ma. Leonora dL. adviser. FI UPIANA UPD DCHE LG 993.5 2015 F66 R53 Thesis