Abstract

NINO OTALORA, Lina Johanna; GARCIA TORRES, Angélica María; MEDINA VARGAS, Oscar Julio  and  ROJAS MORALES, Carlos Iván. PHOTOACTIVE BIOFILMS: PACKAGING MATERIALS IN OXIDATION SENSITIVE FOODS. rev.udcaactual.divulg.cient. [online]. 2018, vol.21, n.2, pp.457-466. ISSN 0123-4226.  https://doi.org/10.31910/rudca.v21.n2.2018.1080.

Pollution caused by plastic waste is one of the main emerging environmental problems of the 20th century. Particularly the use of plastic containers for food and beverages that occupies almost 50% of its total production. The elaboration of bioplastics from renewable raw materials emerges as an alternative of low environmental impact in the food industry sensitive to oxidation, conserving its organoleptic and nutritional quality. The aim of this research was to prepare biofilms from residual esterified potato starch, anchored to photoactive substances with different ranges of electromagnetic absorption: Betalaine, Rutin and Riboflavin, able to reduce oxidative processes induced by light in bovine meat samples. The physicochemical, mechanical and photoactive efficiency properties were evaluated. The results showed that the anchoring of the photoactive substances to the esterified starch optimizes the values of water solubility, transparency, acid-base stability and resistance to rupture of the biofilms. The greater photoactive protection was obtained with the biofilm of Rutin, reducing in 66.6% and 57.3% the oxidative degradation of proteins and lipids respectively. It is concluded that the esterification of residual potato starch and its subsequent anchoring of photoactive substances confers a potential use in the production of biodegradable food packaging.

Keywords : biofilms; food packaging; photoactive substances; starch; oxidative degradation.

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