![]() Films with 5% protein isolates have a smaller water absorption of 0.56%, than films with 0% of 0.66%. For water vapor transmission rate (WVTR), film comparisons were made with 5% variation of protein isolates and 0% protein isolates. The results showed that the highest mechanical properties were obtained in the variation of 5% protein isolates with a value of 52.16 MPa and elongation of 38.4%. The protein extraction process was carried out by centrifugation, while the water vapor transmission test was by the saucer method, while the identification of functional groups was through FTIR analysis. Samples were analyzed to determine the tensile strength and elongation of the resulting film by varying the amount of protein isolates, 0%, 3%, 5%, 7% and 9%. ![]() This study aims to analyze the character of edible films of corn starch with protein isolates from the extraction of tofu processing industry wastewater. During this time, the waste collection is done by dumping it into a ditch and flowing it into the river, thus worsening environmental sanitation. ![]() One factor contributing to the environment's waste is industrial activity both large and small scale.
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