Abstract

SERNAQUE AUCCAHUASI, Fernando Antonio; HUAMAN MOGOLLON, Lilian del Carmen; PECHO CHIPA, Hugo  and  CHACON CHACON, Michiel Elizabeth. Biodegradability of bioplastics made from Mangifera indica and Musa paradisiaca peels. Ctro. Agr. [online]. 2020, vol.47, n.4, pp. 22-31.  Epub Oct 01, 2020. ISSN 0253-5785.

Bioplastics have been created as an eco-efficient alternative to traditional plastic. They are obtained from natural polymers extracted from cellulose or starch, and are 100 % biodegradable. The aim of this research is to analyse the biodegradability of bioplastics made from Mangifera indica and Musa paradisiaca peels for which the research was divided into two parts: preparation of the bioplastic and biodegradability test. In the first stage, a methodology based on the addition of plasticizers such as water and glycerol were used. It is here where bioplastics were elaborated with different volumes of glycerol, to obtain unequal physical characteristics. In the last stage, worm humus was used as a degradation medium, the time range used to estimate the biodegradability of the sheets was 1 to 4 weeks. Finally, it was determined that the bioplastic made from mango peel had a reduction of 93.06 % in its initial weight and the bioplastic made from banana peel had a 73.16 % reduction in its initial weight at the end of the study. Based on the different volumes in the addition of glycerol for the preparation of the bioplastic, it was determined that it has a direct relationship with the biodegradability of the film, since the greater the amount of glycerol, this will increase the biodegradability of the films.

Keywords : starch; cellulose; density; glycerol; porosity.

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