Physicochemical properties of sugar palm starch film: Effect of concentration and plasticizer type

Innovation in Polymer Science and Technology 2016

材料科学;化学

Prasetyo, D.J.^1 ; Apriyana, W.^1 ; Jatmiko, T.H.^1 ; Hernawan^1 ; Hayati, S.N.^1 ; Rosyida, V.T.^1 ; Pranoto, Y.^2 ; Poeloengasih, C.D.^1

Research Unit for Natural Product Technology, Indonesian Institute of Sciences, Yogyakarta

55861, Indonesia^1

Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta

55281, Indonesia^2

关键词: Casting method;    Different formulae;    Physicochemical property;    Polyethylene glycol 400;    Solubility in waters;    Starch films;    Swelling behavior;    Swelling degree;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/223/1/012049/pdf
DOI  :  10.1088/1757-899X/223/1/012049

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to find the best formula for capsule shell production, this present work dealt with exploring physicochemical properties of sugar palm (Arenga pinnata) starch film as a function of different kinds and various concentrations of plasticizers. The films were prepared by casting method at different formula: starch 9-11%, glycerol or sorbitol 35-45% and polyethylene-glycol 400 (PEG 400) 5-9%. Appearance, thickness, retraction ratio, moisture content, swelling behavior and solubility of the film in water were analyzed. Both glycerol and sorbitol are compatible with starch matrix. On the contrary, PEG 400 did not form a film with suitable characteristics. The result reveals that glycerol-$$$ and sorbitol-plasticized films appeared translucent, homogenous, smooth and slightly brown in all formulas. Different type and concentration of plasticizers altered the physicochemical of film in different ways. The sorbitol-plasticized film had lower moisture content (≤ 10%) than that of glycerol-plasticized film (≥ 18%). In contrast, film plasticized with sorbitol showed higher solubility in water (28-35%) than glycerol-plasticized film (22-28%). As the concentration of both plasticizers increased, there was an increasing tendency on thickness and solubility in water. Conversely, retraction ratio and swelling degree decreased when both plasticizers concentration increased. In conclusion, the sorbitol-plasticized film showed a potency to be developed as hard capsule material.