Velázquez-Contreras, Friné

Preferred name

Official Name

Velázquez Contreras, Friné

Alternative Name

fvelzqu

Main Affiliation

ORCID

0000-0002-0731-0787

Scopus Author ID

57199218367

Researcher ID

GGH-5617-2022

Now showing 1 - 5 of 5

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Labor harmonization perception: case of a private higher education institution in Mexico
(Informa UK Limited, 2025-07-18)
Villarreal-García, Mónica Adriana
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Hernández Godoy, Zara
This research addresses the perception of labor harmonization in a private Higher Education Institution in Mexico. Through the social representations method, 9 focus groups were conducted with the participation of 42 members of management committees, whose main findings deal with the meaning of labor harmonization, how it is theoretically understood and advocated, and how difficult it is to conduct it. Some factors involved in achieving this were discovered: children and caregivers, marital status and workloads. Some elements that promote it within the institution are: flexible schedules, support networks made up of the family, the boss and the work team, as well as the presence of a woman president. Drawbacks to its implementation have also emerged. Some strategies, strengths, challenges and areas of opportunity were identified in the interviewees. Undoubtedly, progress has been made, but there is still a long way to go, thus glimpsing that labor harmonization continues to be a challenge that requires co-responsibility between women and men, where they converge in a machinery that leads them to live in harmony in all the dimensions of their lives, since the way to approach it must be done with no confrontation or guilt, but in synergy with all those involved. ©The authors ©International Review of Sociology © Informa UK Limited.
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Amaranth Pasta in Mexico: A Celiac Overview
(2017)
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Scopus© Citations 6 10 1
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Cyclodextrins in Polymer-Based Active Food Packaging: A Fresh Look at Nontoxic, Biodegradable, and Sustainable Technology Trends
(2021)
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Camilo Zamora-Ledezma
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Iván López-González
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Luis Meseguer-Olmo
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Estrella Núñez-Delicado
<jats:p>Using cyclodextrins (CDs) in packaging technologies helps volatile or bioactive molecules improve their solubility, to guarantee the homogeneous distribution of the complexed molecules, protecting them from volatilization, oxidation, and temperature fluctuations when they are associated with polymeric matrices. This technology is also suitable for the controlled release of active substances and allows the exploration of their association with biodegradable polymer targeting to reduce the negative environmental impacts of food packaging. Here, we present a fresh look at the current status of and future prospects regarding the different strategies used to associate cyclodextrins and their derivatives with polymeric matrices to fabricate sustainable and biodegradable active food packaging (AFP). Particular attention is paid to the materials and the fabrication technologies available to date. In addition, the use of cutting-edge strategies, including the trend of nanotechnologies in active food packaging, is emphasized. Furthermore, a critical view on the risks to human health and the associated updated legislation is provided. Some of the more representative patents and commercial products that currently use AFP are also listed. Finally, the current and future research challenges which must be addressed are discussed.</jats:p>
Scopus© Citations 19 9 2
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Effect of PLA Active Packaging Containing Monoterpene-Cyclodextrin Complexes on Berries Preservation
(2021)
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José Daniel Padilla de la Rosa
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Domingo Martínez-Romero
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Mayo Maldonado, Jonathan
<jats:p>Blackberries and raspberries are highly perishable and fragile products, which limits their shelf life. The effect of biodegradable active packaging of blackberries and raspberries containing 2.5% and 5.0% weight (wt%) of thymol or carvacrol complexed in β-cyclodextrins (β-CDs), successively added to poly (lactic acid) (PLA), and melt-processed by injection molding was evaluated under stored conditions at 4 °C for 21 days, using as reference commercial clamshell and PLA package control samples. Thus, physicochemical, headspace, microbiological, and sensory quality studies were carried out in order to compare the efficacy of the different packages. Concerning weight loss, color, and total phenolic and soluble solids content, significant differences were detected when compared with commercial clamshell packaging. The results show that the PLA packages containing thymol and carvacrol complexes maintained the color, weight, and phenolic content of berries until day 21, with a score up to 45% better compared to commercial clamshell. The headspace analysis detected 101 mg L−1 (ppm) of thymol and 35 ppm of carvacrol on the first day of refrigeration; these concentrations decreased with time. This release mechanism of carvacrol and thymol into the PLA package modified the initial atmosphere composition. After 21 days of storage, the berries had 4.25 degrees of acceptance, without adverse perception of aroma or flavor for both carvacrol and thymol compounds. A general microbial inhibition was observed for yeast and molds, which increased with the concentration of monoterpene in PLA packages, and showed an inhibition of 3.5 log units for PLA packages containing thymol, and of 3 log units for those containing carvacrol. Overall results show that PLA/β-CD-thymol 5.0% packages prolonged raspberries’ and blackberries’ shelf life by one more week at 4 °C, compared with commercial clamshell packaging.</jats:p>
Scopus© Citations 26 22 1
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Development and Characterization of a Biodegradable PLA Food Packaging Hold Monoterpene–Cyclodextrin Complexes against Alternaria alternata
(2019)
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Nuño-Donlucas Sergio Manuel
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Núñez-Delicado Estrella
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Gabaldón José Antonio
<jats:p>The fungi of the genus Alternaria are among the main pathogens causing post-harvest diseases and significant economic losses. The consumption of Alternaria contaminated foods may be a major risk to human health, as many Alternaria species produce several toxic mycotoxins and secondary metabolites. To protect consumer health and extend the shelf life of food products, the development of new ways of packaging is of outmost importance. The aim of this work was to investigate the antifungal capacity of a biodegradable poly(lactic acid) (PLA) package filled with thymol or carvacrol complexed in β-cyclodextrins (β-CDs) by the solubility method. Once solid complexes were obtained by spray drying, varying proportions (0.0%, 1.5%, 2.5%, and 5.0 wt%) of β-CD–thymol or β-CD–carvacrol were mixed with PLA for packaging development by injection process. The formation of stable complexes between β-CDs and carvacrol or thymol molecules was assessed by Fourier-transform infrared spectroscopy (FTIR). Mechanical, structural, and thermal characterization of the developed packaging was also carried out. The polymer surface showed a decrease in the number of cuts and folds as the amount of encapsulation increased, thereby reducing the stiffness of the packaging. In addition, thermogravimetric analysis (TGA) revealed a slight decrease in the temperature of degradation of PLA package as the concentration of the complexes increased, with β-CD–carvacrol or β-CDs–thymol complexes acting as plasticisers that lowered the intermolecular forces of the polymer chains, thereby improving the breaking point. Packages containing 2.5% and 5% β-CD–carvacrol, or 5% β-CD–thymol showed Alternaria alternata inhibition after 10 days of incubation revealing their potential uses in agrofood industry.</jats:p>
Scopus© Citations 48 53 1

Velázquez-Contreras, Friné

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