The lost food caused by the contamination with microorganisms is an important problem to solve human survival. The contamination by fungus is a topic of great interest. because the fungus biosynthesized mycotoxins associated with several diseases. In this sense to give solutions to the problem mentioned before, in this thesis,...
En las últimas dos décadas se ha intensificado la investigación en el campo de los componentes bioactivos que se encuentran en los alimentos, uno de estos componentes son los péptidos bioactivos. Estos péptidos bioactivos se encuentran encriptados en la estructura de las proteínas alimentarias y una de las fuentes principales...
El presente trabajo, tuvo como objetivo determinar el efecto de un galactooligosacárido comercial (Oligomate 55) y una proteína (lactoferrina) sobre el crecimiento de Lactobacillus casei Shirota y Escherichia coli buscando estimular el crecimiento del primero y disminuir el del segundo cuando ambos se encontraban en un sistema que simulaba durante...
Ochratoxin A (OTA) is a threat to health due to its toxicity. OTA is produced by fungi of the genera Aspergillus and Penicillium in different stages of coffee processing. The degree of contamination depends on the weather, humidity, geographical location and the kind of post-harvest processing. Chiapas is the primary...
Las leches fermentadas han sido ampliamente estudiadas y se ha encontrado que su consumo aporta diversos beneficios a la salud. Estos beneficios están asociados principalmente a las bacterias lácticas que se utilizan en su fermentación. El sistema proteolítico de las bacterias lácticas ha sido ampliamente estudiado y es sabido que...
Meat aroma is composed of a wide variety of chemical compounds. It has been reported to be made of more than 700 chemicals. Among the most important reactions responsible of meat aroma are Maillard reaction and lipid autoxidation or oxidative rancidity. However, aroma perception is modified by the physical system...
Las atmósferas controladas (AC) consisten en proporcionar a los productos hortofrutícolas una mezcla específica y precisamente controlada de gases en su ambiente de almacenamiento, el cual difiere de la composición de aire de la atmósfera normal. Las atmósferas modificadas difieren de las primeras en que el ambiente de almacenamiento no...
In this thesis peptides with biological activity have been separated and identified, mainly peptides with antihypertensive activity in commercial fermented milk with Streptococcus thermophilus and Lactobacillus acidophilus, during refrigerated storage. This thesis is structured in three parts. In the first part analysis of soluble peptides determination by Lowry technique was...
The whey is the main byproduct in the dairy industry and it can cause environmental problems if it is not treated suitable. Between several biotechnological alternatives, the yeasts belonging to the genus Kluyveromyces can metabolize lactose as carbon source and energy for the production of biomass and enzymes of industrial...
In this study hydroxycinnamic acids were biotransformed. These acids are present in mexican agricultural by-products such as coffee pulp. In order to fulfill this study, moulds from the Universidad Autónoma Metropolitana Iztapalapa (UAMI) and from the Institut de Recherche pour le Développement (IRD) were used. These strains were isolated from...