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Food Codex requires safe products and packaging is an important factor to comply with this consumer right, so developing packaging with antimicrobial properties that protect the product by eliminating or inhibiting bacteria or pathogens that cause damage to health is important in the food industry. The objective of this work was to perform a bibliographic analysis of some additives that generate antimicrobial properties in packaging by reviewing some studies that have developed antimicrobial films or also called smart films. Microbial agents have become an important factor in maintaining food quality over time. Biopolymers are an excellent alternative due to their availability, low cost, biodegradability and their origin are from renewable sources.

Municipal markets began to be built more than 90 years ago in Ecuador, some have already been remodeled and there are also new buildings with modern designs but within them, the process of selling rice in bulk remains in this XXI century. The object of study of this work is the market "Las Manuelas" located in the province of Guayas in the canton of Duran. The method of selling bulk rice exposes this product to some types of food hazards, so the aim of this research is to determine the index of the criticality of the activities related to this long-lasting process that is currently being promoted as a process that does not pollute the environment. The observation technique was applied to make the food circulation diagram and the AMEF methodology was used to obtain the criticality index (CI) and according to the decision tree of the World Health Organization, the critical control points were established. Results obtained showed that the activity of storage and dispatch of bulk rice within the municipal market presented the highest ICs, under these parameters the importance of establishing preventive actions that could give a turn to this type of business.

The market "Las Manuelas" located in the canton Duran, Guayas province is the subject of this research, this market is new in its location, has a modern infrastructure design, but there is a paradigm about the municipal markets maintain poor hygiene, lower than supermarkets and this condition affects the experience of customers and consumers. This research aims to determine the association between the cleanliness of the "Las Manuelas" market and the experience of its consumers. Survey technique was applied for data collection and the Somers coefficient was used for statistical analysis through the SPSS 22.00 program. The results indicated that there is an association between the two study variables. Through the analysis of the contingency table, 37.5 % of the consumers motivated their purchase by the observed cleanliness; they qualified the experience of their purchase as regular. The market "Las Manuelas" could take awareness measures to promote an optimal hygiene culture to improve the experience of its consumers, 48.1% of them choose to buy in the market for the convenience in prices and 19.4% for the variety of products. In view of the growth of supermarkets in the country, isolating the cleaning factor as a purchasing decision could put this supply centre identified as a cultural symbol at risk.