Mechanical and Light Transmittance Properties of Locust Bean Gum Based Edible Films

Authors : Meltem AYDINLI, Mehmet TUTAŞ, Ö Altan BOZDEMİR

Pages : 163-172

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The behavior of locust bean gum insert ignore into journalissuearticles values(LBG); under heat was investigated by thermogravimetric insert ignore into journalissuearticles values(TG);, differential thermogravimetric insert ignore into journalissuearticles values(DTG); and differential scanning calorimetric insert ignore into journalissuearticles values(DSC); methods. It was observed from the TG, DTG and DSC curves that LBG does not melt and is stable up to 300 °C, although exothermic degradation occurs at higher temperatures. The effect of the amount and molecular weight of polyethylene glycol insert ignore into journalissuearticles values(PEG); on the light transmittance and mechanical properties of these edible films was also examined. Haze increased and the luminous transmittance and total light transmittance values decreased with both the quantity and molecular weight of PEG. On the other hand, tensile strength and elongation decreased, but there was no regular relationship between the molecular weight of the PEG and the tensile strength of the films. It was concluded from the results of the mechanical and optical measurements that the most suitable plasticizer among the PEG plasticizers with different molecular weights is PEG 200 and that the maximum level for its use is 0.6 mL/0.7 g LBG in edible film formulations.
Keywords : Locust bean gum, Edible film, Plasticizer, Light transmittance, Mechanical properties