Abstract
Edible films are one of packaging products that environmental friendly. Edible films can produce from the by-products of the slaughtering of livestock locally. Edible films used as materials packaging of foodstuff to protect food products of contamination of air, light, lipid, dissolved substances and microorganisms. One of the main advantages of edible film packaging is a natural character, so it can consume together with such food products. The purpose of this study was to evaluate the properties of edible film that produced from a combination of collagen extracts from glycerol as a plasticizer. The study was using collagen extract produced from materials of goatskin, Bligon types and ages 2-2.5 years as the main material and glycerol as ingredients plasticizer. Methods of this study were using experiment design with completely randomized pattern unidirectional the design. Three concentrations of glycerol applied, namely: 80%; 90% and 100% (of the total extract collagen in the mix) combined with 10% (w/v) extract collagen. The results showed that the difference concentration of glycerol that used in the mix effect in the thickness, tensile strength and elongation, but no significant on the solubility, water vapor transmission rate (WVTR) as well as aw values of edible films. The study implication was the application F1 formula (10 g (10%) of extract collagen solid + 8 g of glycerol (80%) + 100 mL of distilled water) generating properties of edible films better.
Highlights
Bligon goat is one of the local livestock resources in Indonesia
This study was using the main ingredient of goatskin, male, type of Bligon, age of 1.5-2 years, glycerol as a plasticizer, distilled water, aluminum foil, clip plastic, solution of NaCl 40% (w/v) and silica gel
The number increased glycerol concentration in the mixture shows the real effect in increasing the thickness of the edible film
Summary
Bligon goat is one of the local livestock resources in Indonesia. One by-product of slaughtering the goat is the skin. Information sources related to the utilization of goatskin as a raw material for food packaging are still lacking. One of type of food packaging that environmental friendly was edible film. One of the advantages of edible film as the packaging material is can be consumed along with the product, so that no waste. Edible films need to be developing as an effort to create an environment zero waste
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