Worraphol NANSU และ Passarawan CHAIWUT;Sukunya ROSS;Gareth ROSS;Nungruthai SUPHROM;Sararat MAHASARANON. (2021) Developments of biodegradable polymer based on polylactic acid (PLA) with natural color extracts for packaging film applications. <i>Journal of Metals, Materials and Minerals</i>, <i>31</i>(3), 127-133.Worraphol NANSU และ Passarawan CHAIWUT;Sukunya ROSS;Gareth ROSS;Nungruthai SUPHROM;Sararat MAHASARANON. "Developments of biodegradable polymer based on polylactic acid (PLA) with natural color extracts for packaging film applications". Journal of Metals, Materials and Minerals 31 (2021):127-133.Worraphol NANSU และ Passarawan CHAIWUT;Sukunya ROSS;Gareth ROSS;Nungruthai SUPHROM;Sararat MAHASARANON. Developments of biodegradable polymer based on polylactic acid (PLA) with natural color extracts for packaging film applications. Metallurgy and Materials Science Research Institute Chulalongkorn University:ม.ป.ท. 2021.