Effect of Sago Starch Concentrations, Stirring Speeds, and Lemongrass Oil Concentration for Edible Film Production Using Solvent Casting Method

Abstract

Foods such as meat, fillet, fruit and vegetable tend to have short shelf life when it is stored outside without packaging. Recently, edible film and coating become a potential alternative for food packaging. Edible film brings a lot of advantages from environmental aspect because it is easier to be decomposed rather than the synthetic film. Furthermore, edible film might be produced from both natural raw material and waste materials. Edible film from natural raw material gives a rigid structure. Another additive agent must be used to make a better quality product, such as glycerol and lemon grass oil as plasticizer and antimicrobial agent, respectively. These materials are commonly used in edible film production due to its capability for extending the food shelf-life by inhibiting bacterial growth. The objectives of this study are to investigate the effect of starch concentration (3% to 10% w/v), stirring speed (350, 700, 1100 rpm) and lemon grass oil concentration (1%, 5% v/v) on tensile strength, water vapor permeability, and antimicrobial activity. Results show that 4% (w/v) sago starch gives the best edible film mechanical properties and least water transfer. Edible film with 4% (w/v) sago starch, 8 rpm constant stirring, and 5% (v/v) lemongrass oil gives the best result in tensile strength, water vapor permeability and bacterial growth. In addition, variables of starch concentration, stirring speed and lemon grass oil concentration are interrelated to produce the best edible film.

Identifikasi Fisikokimia Dan Gugus Fungsional Menggunakan FTIR Campuran Iota caragenan-FPM kulit ikan patin-Tepung buah Mangrove Sebagai Bahan Edible Film

“…Film karagenan telah menunjukkan sifat penghalang gas yang baik; namun, film yang dihasilkan memiliki permeabilitas air yang tinggi karena sifat hidrofiliknya, yang membatasi aplikasinya dalam kemasan makanan [5] Buah mangrove jenis Bruguiera gymnorrhiza yang digunakan dalam bentuk tepung merupakan Starch yang bersifat larut air. Penggunaan starch dalam composite biopolimer film dapat meningkatkan sifat fisik dan mekanik film.. Sedangkan menurut [6] bahwa edible film yang terbuat dari starch bersifat kompak akan tetapi rapuh atau mudah retak.…”

Variations of Washing Agent on The Physicochemical And Microbiology Properties of Sago Starch

“…), the beverage industry (liquid sugar), the packaging industry (biodegradable packaging), the pharmaceutical industry, cosmetics, paper, ethanol, and textiles, also animal feed. High organic content makes it sago pulp can be used for plant media [5], biomass as biogas because it contains lignin and hemicellulose [6] [7], sago starch as a natural raw material edible film [8], starch as a raw material for analog rice [9]. Sago starch is a raw material for bamboo microfibril cellulose [10].…”