UJI KARAKTERISTIK EDIBLE FILM PATI JAGUNG DENGAN PENAMBAHAN PEKTIN KULIT APEL MANALAGI (Malus sylvestris Mill) DAN EKSTRAK JAHE EMPRIT (Zingiber Officinale) SEBAGAI SUMBER ANTIOKSIDAN

Edible film is a thin layer that is used by food as a packaging made from natural ingredients. One of the basic ingredients for making edible film is pectin. Pectin is a complex polysaccharide compound with the main component of D-galacturonic acid. Pectin has good gel properties so it can be used as a component in the manufacture of edible film. The addition of ginger extract to edible film has the ability to preserve the product, the content of phenolic compounds that function as antioxidants. The purpose of this study was to determine the interaction and influence of concentration differences between apple peel pectin and ginger extract on edible film characteristics. This study used a Factorial Randomized Group Design (RAK) with the first factor of adding apple skin pectin, namely (0.5%, 0.7%, 0.9%) and the second factor of adding ginger extract, namely ( 0.5%, 0.75%, 1%). The parameters tested were thickness, elongation, tensile strength, water vapor transmission rate, solubility, antioxidant activity. The results showed that the addition of apple peel pectin and ginger extract, if separated by the results, had a noticeable effect on thickness, elongation, tensile strength, water vapor transmission rate, solubility. The best results from this study were A2B3 with an apple skin pectin concentration of 0.7% and ginger extract of 1% with a thickness value of 0.17mm, tensile strength of 0.33 MPa, elongation of 16.06% water vapor transmission rate of 0.61g/m^2/day, solubility of 43.08% and antioxidant activity of 75.83%. According to JIS (Japanese industrial standard) edible produced by the thickness parameters have met the standard with a max value of 0.25mm, tensile strength values that do not meet the standard with a min of 0.39 MPa, the elongation value of edible film can be said to be bad if the value is less than 10% and is categorized as very good if the value is above 50%, the value obtained in this study is categorized as good, the value of the water vapor transmission rate indicates that it complies with the standard with a max of 7 g/m^2/day