Aprilia, Dini and Cahyani, Rizka (2016) KARAKTERISTIK EDIBLE FILM PATI KULIT SINGKONG DIPERKAYA EKSTRAK JAHE MERAH DAN PENAMBAHAN PLASTICIZER GLISEROL. S1 thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.

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Abstract

Edible film (edible coating) is a thin layer made of edible ingredients. One ingredient that is commonly used as an edible film is starch. Starch is a homopolymer of glucose by α-glycosidic bond. To obtain edible film optimal cassava starch and resistant to bacteria, in this study using red ginger. Red Ginger contains anti-bacterial substances that can inhibit the growth of bacteria and to obtain optimal properties of edible film made with the addition of glycerol plastizer. Research procedure includes extraction of red ginger, peel cassava starch solution preparation terplastisasi glycerol, and the manufacture of edible film cassava starch leather with red ginger extract. Analysis performed tested are bacterial analysis, analysis of swelling and tensile strength test. The addition of glycerol increase the water content and lower the tensile strength. The film with the biggest water content contained in the addition of 0.5% w / v solution of red ginger and 2% v / v solution of glycerol that is 18.31%. The highest tensile strength contained in the film with the addition of 0.5% w / v solution of red ginger and 1% v / v solution of glycerol in the amount of 2.85 N / mm². Antimicrobia test results showed that the addition of red ginger extract can inhibit the growth of Bacillus sp. Keyword : Edible film, Swelling, Bacillus sp, Tensile strength.

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