Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Objective: The objective of this study is to evaluate the sensory perspectives of chips-type snacks made from black bean dry (Phaseolus vulgaris L) and peanut (Arachis hypogaea Linn) flours in a university population. Design/methodology/approach: Two formulations were realized from peanut and black bean previously toasted and milled: 1) (PF) 50% peanut flour, 12.5% rice flour and 12.5 % cornstarch; 2) (BbF) 50% black bean flour, 12.5% wheat flour and 12.5% cornstarch. Each mixture of flours was extruded and fried until obtained chips-type snacks. A statistical-descriptive study was carried out from the observation of the eating habits of university students in the State of Mexico. On other hand, an affective test was tested to evaluate the acceptance of chips-type snacks made with PF and BbF in the categories of odor, taste, hardness, and easy to break. Findings/conclusion: According to the questionnaire, the female gender has higher snack consumption than the male population. On another hand, potato chips are in third place as the most consumed snacks for women they preferred to consume them in their houses. Peanut and chickpea flour are the most preferred by the female population. There was no significant difference (p˃0.05) between the snacks prepared with PF and BbF, but 60% of the consumer accepted both snacks. It is concluded that the chips-type snacks made with different formulations could be a healthy alternative for the students, also it kind of products have good acceptability. Finally knowing the sensory perspectives could provide important information for developing healthier and easier-to-eat snacks. Limitations on study/implications: More studies about the characterization of the chips-type snacks are required, also a mix of both legumes could be realized.

Objective: Evaluate the use of Ethylene Glycol (EG), Dimethyl Sulfoxide (DMSO), Sucrose and Fetal Bovine Serum (FBS) as cryoprotectants and their effect on the organization of chromosomes and the arrangement of microtubules, during the vitrification process in goat oocytes matured in vitro and in the development of preimplantation embryos produced in vitro. Design/methodology/approach: In vitro matured oocytes were divided into 3 groups (control group, cryoprotectant exposed group, vitrified group). A mixture of 15% EG, 15% DMSO, 0.4 M sucrose and 20% FBS was used for the vitrification using the Cryotop device. In vitro matured oocytes were warmed and afterwards each group was divided into two more groups. Both groups were subjected to immunofluorescence, the first group to observe the damage produced to the chromosomes and microtubules and the second group to observe the effect on the in vitro embryo development. Results: The combined use of 15% EG, 15% DMSO, 0.4 M Sucrose and 20% FBS during vitrification did not prevent cryoinjuries in goat oocytes and in vitro produced embryos, since embryo development was disrupted before the blastocyst stage by stopping cleavage at the morula stage. This disruption was associated with chromosome decondensation and the absence of a microtubule network, thereby hindering chromosomal segregation. Limitations on study/implications: The effect of conventional cryoprotectants on chromosomes and microtubules arrangement on vitrified goat oocytes and in vitro embryo production. Findings/conclusions: The combined use of 15% EG, 15% DMSO, 0.4 M sucrose and 20% FBS as vitrification cryoprotectants did not prevent cryoinjuries in caprine oocytes and did not improve caprine embryo development in vitro.

Objective: The encapsulation of bioactive compounds of food interest provide protection against ambiental factors and degradation reactions. Therefore, the encapsulation of these compounds, was studied and analyzed considering the applications, current advances, challenges, and opportunities on the topic. Design/methodology/approach: Wall materials, bioactive compounds of food interest, encapsulation methods, applications, current advances, challenges, and opportunities in encapsulation of bioactive compounds were explored, described, and discussed considering the principal literature on the topic, and scientific databases were used for the bibliographic research. Results: Encapsulation process is a novel technology that allows the increasing the stability of aromas, flavors, pigments, and microorganisms, beside of improve the sensory, physical chemical and functional properties, quality, and the extend the shelf-life. Limitations on study/implications: Foods contain bioactive compounds that are susceptible to oxidation and degradation, which can reduce their quality and shelf life. To preserve these compounds, is important to develop other encapsulation systems considering alternative wall materials from different sources that can be applied under different process conditions from laboratory, pilot to industrial scale.  Findings/conclusions: Encapsulation process provide protection to bioactive compounds enhancing the sensory, physical chemical and functional properties, quality, and extend the shelf-life considering the integral and sustainable use of agricultural products.

Objective: Determine which agricultural practices are currently used by corn (Zea mays L.) growers in the municipality of Jilotepec, Estado de México. Design/methodology/approach: An individual survey composed of both open and close-ended questions was applied to 93 corn producers from the municipality of Jilotepec, Estado de México, in order to obtain information about the planting practices they carry out. From there, 10 producers were selected for on-site monitoring their plots.  Results: Maize growers in Jilotepec, Estado de México, are conscious of the genetic and cultural richness of native maize. However, the agricultural practices they use for their production are centered on the conventional agricultural model using chemical compounds obtained by chemical synthesis and a part is focused on monoculture production. Study limitations/implications: The applied survey consisted of 13 questions, and the main limitation was the fact that it was not an extensive questionnaire because it is hard for people to devote a lot of time to this kind of polls; it is known that few questions generate more accurate information, while detailed polls have high levels of inaccuracy. Findings/Conclusions: The results of this study showed that most of the producers are dedicated to growing native corn with a single crop per year and do not use any agroecological practices for their production or only very limited ones; they are also convinced that it is important to preserve native corn as it is a wealth for the Mexican people.

ABSTRACT Objective: The aim of this study was to use bibliometric analysis to provide an overview of the empirical and theoretical research that has been carried out with regard to COVID-19 focusing on scientific publications on the topic of farmers. Design/methodology/approach: The global literature on COVID-19 and agricultural producers (farmers) published between 2019 and 2022 (August 8), was obtained from the SCOPUS database, comprising a total of 665 documents. VOSviewer was used to perform a bibliometric analysis of these papers. Results: The two countries that published the most research related to the terms studied were the United States and India. Research conducted in these countries was found in the most cited studies. The studies focused on five major topics: agriculture, epidemiology, psychology, economic impact, as well as rural areas and risk determination. The evolution of the topics over time showed that the research originally began with health-oriented studies, and that once the protocols for the return to normal were generated, studies were carried out to visibilize the producers and their challenges during the pandemic in addition to the support strategies that were generated and the impact that the pandemic had on them, as well as on the local, regional, national, and global economy. Limitations on study/implications: The documents analyzed are exclusive to the SCOPUS database, so literature was excluded from other sources such as Google Scholar or Web of Science, which could contain important information on the subject in relation to other disciplines. Findings/conclusions: This type of study makes it possible to better understand the current state of the art regarding the effect of COVID-19 on the agri-food sector, thus allowing researchers to visualize the relevance of, and guide, their research on the topic. Keywords: bibliometric analysis; resilience; farming; SARS-CoV-2; pandemic; farm workers.

Objective: To perform a literature review of the presence of pesticides in edible insects, main pesticides used in Mexico and to discuss the potential risk of contaminated edible insects for human consumption. Design/methodology/approach: Concise analysis of the main research topics related with the impact of pesticides on insects, through a wide review of specialized journals on insects’ field. Results: The majority of edible insects are considered as a common plague in some crop varieties, causing a decrease in their production yield. As a result, farmers use mainly chemical insecticides to control this plague. Besides, farmers use also chemical herbicides and fungicides to control weeds and fungi. However, those pesticides have a negative impact on edible insects because they can be contaminated. These contaminated edible insects can be collected from different crop varieties for their use as food.   Limitations on study/implications: To conduct further research to identify and determine the pesticide levels in edible insects consumed in Mexico. Findings/conclusions: Edible insects may represent a potential risk to human health, especially when insects are wild harvested because can be contaminated with pesticides, particularly insecticides, herbicides, and fungicides.

Objective: The objective was to evaluate the growth and proximal analysis of twelve accessions of Moringa oleifera Lam. grown in Mexico. Design/ Methodology/ Approach: The seeds were collected in Veracruz, Oaxaca, Guerrero, Chiapas, and Yucatan. The seeds were sown in a nursery and transplanted in the field in a completely randomized block experimental design. Height, basal diameter, and the number of branches were recorded, and leaves were collected for proximal analysis determination. Results: Significant statistical differences (P< 0.05) were identified among the accessions based on tree height, basal diameter, number of branches, moisture content, ash, protein, and fat contents.   Study limitations/implications: Accessions with high growth rates and nutritional characteristics can be selected to establish low-cost food banks. Result / Finding / Conclusion: The accessions from Chiapas (C1 and C2) were superior to the others in tree height, basal diameter and number of branches, protein, and fat contents.  

Objective: Analyze the effect of the sugar substitution by dehydrated aguamiel on the physicochemical quality of pear jam pear (Pyrus communis L.)   Design/methodology/approach: Different levels of sugar substitution by dehydrated aguamiel were analyzed (0, 25 and 50%). Physicochemical parameters on pear jam as color, pH, acidity, density, consistency and soluble solids were evaluated. Results:  Results showed that the physicochemical and color characteristics of the pear jam was changed by the substitution of sugar by dehydrated aguamiel   Study limitations/implications: More studies related to sensorial analysis of the pear jam and technological functions of dehydrated aguamiel are required. Findings/Conclusions: Pear in advanced stage of maturity could be considered as a good ingredient in jam formulation. Dehydrated aguamiel was used as an alternative a sweetener in jam

Objective: Analyze the production of polyhydroxyalkanoates (PHA) by Bacillus subtilis sp., subtilis in submerged culture using pear residues as a carbon source. Design/methodology/approach: The culture consisted of pear residue flour concentrations of 5 and 15 % for 72 h. Reducing sugars, biomass, pH, protein, and pHA extraction and quantification were analyzed during submerging cultivation of Bacillus subtilis sp., subtilis Results: The results showed that Bacillus subtilis sp., subtilis can grow and generate PHA, having its maximum proportion in PHA extract of 0.094 g/L at 72h of culture, at a substrate concentration of 5%. Study limitations/implications: More studies related to the optimization of culture conditions for PHA production are required and prior treatment of pear waste flour will be considered. Findings/Conclusions: The synthesis of these biopolymers is important to promote their large-scale production using agro-industrial waste, thus contributing to reduce the environmental impact.

In the last decades, catastrophes and complexities of history appear in Rafael Spregelburd´s theater not only in its thematizations, but also in intermedial, serial and long-lasting explorations that seek to mobilize, to our understanding, a thought and a practice about the place of artistic (and political) imagination today. It also operates with the recycling of multiple materials and a critical rework about fiction, reality and time that connect it with a way of understanding history as “preposterous history” (Bal). The present work seeks to analyze his most recent project, The End of Europe, written between 2012 and 2017, under the following premise: a theater in times of crisis, calamities and endings seeks to dismantle the stories of the end making it seem that the point that marks the hatching is not so much a closure, but a possibility to understand and inhabit the world in another way, even if we still do not know how to do it.