Extraction of edible superhydrophobic membrane using tomato peels and beeswax

Abstract

This thesis is about making an edible superhydrophobic film using tomato peels and beeswax. The extraction process was done twice, first by following the article and second by changing the process according to the requirement. The films were made by cooking tomato peels with 3 wt% NaOH solution at 93°C. Then 6 mol/L HCl was used to acidify the mixture until it reaches pH level around 5-6 and cutin was extracted by gravity separation method. Then the obtained cutin was mixed with pectin to create the film and then it was treated with beeswax, to make the film superhydrophobic. Then the contact angle test and biodegradability test were done on the film (by colleagues). Also, the FTIR test was done to ensure the hydrogen binding bond in the film and to compare the result with the previous results.