Status : Verified
| Personal Name | Ribuca, Khareena D. |
|---|---|
| Resource Title | Physical and mechanical properties of banana flour/Kappa-Carrageenan biodegradable plastic film packaging |
| Date Issued | 10 June 2015 |
| Abstract | 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. |
| Degree Course | Bachelor of Science in Food Technology |
| Language | English |
| Keyword | Plastics in packaging--Philippines; Plastic films--Permeability |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access