A paste is a food of English origin adopted in Hidalgo, Mexico, over a hundred years ago. It is consumed as a convenience food and is very popular among students. The aim of this research was to determine the physicochemical, nutritional, and microbial quality of pastes as well as to obtain data on their consumption in a population of Mexican university students. The proximal composition, calories, sodium content, pH, water activity, and microbiological quality of 15 types of pastes were analyzed. Five hundred students from the largest public university in the State of Hidalgo in Mexico were surveyed to determine paste consumption. Pastes varied in their content of fat (12-25.7 g/100 g), protein (2.29-12.6 g/100 g) and carbohydrates (23.5-52.7 g/100 g). The caloric content varied from 356 to 545 kcal/paste. The salty samples contained more sodium (216-693 mg Na/100 g) compared to the sweet ones (54.9-74.1 mg Na/100 g). Samples presented large variability in microbial quality and only one sample had coliform growth. Almost all respondents (96.2%) reported consuming pastes, 49.7% consumed 1 to 2 pieces per week, while 32% consumed 3 to 4. Participants considered that pastes were fast, convenient, and cheap and mentioned consuming them for their taste and practicality. Pastes represent an important source of calories and sodium in the diet. Labeling these types of foods will provide nutritional information and could prevent excessive consumption.
Actualmente, la exigencia hacia las instituciones de educación superior en incorporar al curriculum propuestas que hagan frente a la crisis ecológica es mayor; en el caso de la química como disciplina se le acusa de ser causante de diversos problemas ambientales, cuando lo cierto es que ésta podría constituirse como un cúmulo de alternativas a la devastación planetaria. Por esta razón, el objetivo de esta investigación es proponer la inclusión de la educación ambiental por medio de la ambientalización curricular de la asignatura “Química inorgánica”, la cual es cursada por estudiantes de primer semestre de la Licenciatura en Ingeniería en Nanotecnología (LIN) de la Escuela Superior de Apan (ESAp) en la Universidad Autónoma del Estado de Hidalgo (UAEH), México. Se trata de un estudio exploratorio de corte cualitativo, cuyas principales técnicas de investigación fueron un cuestionario y la interpretación de una técnica expresiva aplicadas a estudiantes de reciente inscripción, las cuales permitieron conocer que las percepciones con relación a las implicaciones de la química en la preservación ambiental, así como la ambientalización de las temáticas de dicha asignatura, son diversas.
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