Agricultural vegetable products always seek to meet the growing demands of the population; however, today, there are great losses in supply chains and in the sales stage. Looking for a longer shelf life of fruits and vegetables, postharvest technologies have been developed that allow an adequate transfer from the field to the point of sale and a longer shelf life. One of the most attractive methods to improve quality and nutritional content and extend shelf life of fruits and vegetables is the incorporation of bioactive compounds with postharvest technologies. These compounds are substances that can prevent food spoilage and the proliferation of harmful microorganisms and, in some cases, act as a dietary supplement or provide health benefits. This review presents an updated overview of the knowledge about bioactive compounds derived from plant residues, the techniques most used for obtaining them, their incorporation in edible films and coatings, and the methods of microbial inhibition.
Los quesos artesanales son reconocidos en el mundo por sus nutrientes y características sensoriales. Son elaborados manualmente en la pequeña industria con leche no sometida a tratamiento térmico que disminuya la flora microbiana, carentes casi siempre de control de calidad. Durante la presente investigación se midió la capacidad de inhibición de dos cepas de bacterias acidolácticas (BAL) aisladas en un estudio previo, conocidas como QR y QJ sobre las bacterias patógenas Escherichia coli y Salmonella. Todos los microorganismos anteriores fueron inoculados en quesos elaborados con leche de cabra pasteurizada. Posteriormente los quesos pasaron por un periodo de maduración y al término de este se realizaron conteos de UFC/g. Se logró una disminución en el número de ambos patógenos. La cepa QJ presentó mayor inhibición contra Escherichia coli, mientras que la cepa QR contra Salmonella. Ambas cepas mostraron su mejor desempeño inhibitorio a los seis días de maduración.
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