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Chávez, Alicia Hernández

doi:10.2307/j.ctv5137rb.3

Cited by 3 publications

(4 citation statements)

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“…Previously, Chavez and Chavez reported that the PER of tortillas containing 6% of defatted soybean flour was 80% higher in comparison to the casein-based diet. In this study, the PER value of SMTD equaled 66% of PER value of casein ( 24 ). Moreover, weanling rats fed with soybean-fortified wheat flour tortillas had twice as high PER values when compared with rats fed with the unfortified tortillas ( 23 ).…”

Section: Discussionmentioning

confidence: 82%

“…Animals fed the casein- and soybean-fortified products consumed higher amounts of food compared with animals fed regular products due to the better EAA scores. Previous studies clearly indicated lower food intakes in animals consuming low-protein quality diets ( 6 , 22 , 24 , 27 , 28 ). The higher food intake plus the better EAA score of the soybean-fortified products improved caloric intake and greatly upgraded weight gains and PER ( Table 4 ).…”

Section: Discussionmentioning

confidence: 92%

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In vivoprotein quality of selected cereal-based staple foods enriched with soybean proteins

Acevedo-Pacheco¹,

Serna‐Saldívar

2016

Food & Nutrition Research

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BackgroundOne way to diminish protein malnutrition in children is by enriching cereal-based flours for the manufacturing of maize tortillas, wheat flour tortillas, and yeast-leavened breads, which are widely consumed among low socio-economic groups.ObjectiveThe aim was to determine and compare the essential amino acid (EAA) scores, protein digestibility corrected amino acid scores (PDCAAS), and in vivo protein quality (protein digestibility, protein efficiency ratio (PER), biological values (BV), and net protein utilization (NPU) values) of regular versus soybean-fortified maize tortillas, yeast-leavened bread, and wheat flour tortillas.DesignTo comparatively assess differences in protein quality among maize tortillas, wheat flour tortillas, and yeast-leavened breads, EAA compositions and in vivo studies with weanling rats were performed. The experimental diets based on regular or soybean-fortified food products were compared with a casein-based diet. Food intake, weight gains, PER, dry matter and protein digestibility, BV, NPU, and PDCAAS were assessed. The soybean-fortified tortillas contained 6% of defatted soybean flour, whereas the yeast-leavened bread flour contained 4.5% of soybean concentrate.ResultsThe soybean-fortified tortillas and bread contained higher amounts of lysine and tryptophan, which improved their EAA scores and PDCAAS. Rats fed diets based on soybean-fortified maize or wheat tortillas gained considerably more weight and had better BV and NPU values compared with counterparts fed with respective regular products. As a result, fortified maize tortillas and wheat flour tortillas improved PER from 0.73 to 1.64 and 0.69 to 1.77, respectively. The PER improvement was not as evident in rats fed the enriched yeast-leavened bread because the formulation contained sugar that decreased lysine availability possibly to Maillard reactions.ConclusionsThe proposed enrichment of cereal-based foods with soybean proteins greatly improved PDCAAS, animal growth, nitrogen retention, and PER primarily in both maize and wheat flour tortillas. Therefore, these foods can help to diminish protein malnutrition among children who greatly depend on cereals as the main protein dietary source.

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Section: Discussionmentioning

confidence: 82%

Section: Discussionmentioning

confidence: 92%

In vivoprotein quality of selected cereal-based staple foods enriched with soybean proteins

Acevedo-Pacheco¹,

Serna‐Saldívar

2016

Food & Nutrition Research

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“…This analytical model does not agree with dialectic philosophy that promotes human effort as the dominant element in nature and human society, and does not consider subjective rationality for judging actions and human modes of living (Chávez, 2004). Thus, we accept as valid the criteria of the investigator in generating abstractions of reality and explaining the phenomenon observed during an investigation.…”

Section: Introductionmentioning

confidence: 79%

Theoretical Conceptual Assembly for the Analysis of Sugarcane Agroecosystems in the Central Gulf of Mexico: An Eclectic Model

Galaviz-Villa¹,

Landeros-Sánchez²,

Castañeda-Chávez³

et al. 2012

JAS

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Our analytical model for agroecosystems having sugarcane production (SAEs) in the central Gulf of Mexico is based on several philosophical currents for a realistic analysis of a specific time and location, according to the context and focus of the currents. Given the premise that the search for complex knowledge is a product of continuous learning, the model is partially founded on the theory of complexity. Traditionally, when adequate procedures are used to undertake any problem of investigation in its totality, it is called a dialectical method; in contrast, another starting point is systemic thought. With the use of these theoretical-philosophical tools, it is possible to construct a model that promotes communication among actors, between sugarcane producers and institutions, so they may jointly design technological products and services according to the level of production and the needs of each grower.

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“…Contamination is defined as the addition of an external factor, be it a chemical product, a form of energy, a biological entity, or a pictorial entity, to an environment suitable for man or chosen by man, altering it, and diminishing its qualities (Chávez and Icaza 1992). Carbon dioxide (CO 2 ) is not commonly considered an atmospheric pollutant since it is a natural part of the air.…”

Section: Theoretical and Empirical Review Of The Literaturementioning

confidence: 99%

Tourism, Economic Growth, and Environmental Pollution in APEC Economies, 1995–2020: An Econometric Analysis of the Kuznets Hypothesis

Navarro-Chávez,

Ayvar-Campos,

Camacho-Cortez

2023

Economies

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Tourism plays an important role in fostering economic growth within the Asia-Pacific Economic Cooperation (APEC) forum member countries. Nevertheless, the development of this sector has resulted in significant depletion of natural resources and pollution. This research aims to determine the relationship between tourism, economic growth, and environmental pollution in both developing and developed APEC economies from 1995 to 2020. By adopting the Environmental Kuznets Curve (EKC) framework, two dynamic panel data models are estimated employing Dynamic Ordinary Least Squares (DOLS), and causal relationships are established using the Dumitrescu–Hurlin test. The results indicate that tourism and economic growth have had a positive influence on the rise of environmental pollution in both groups of economies during the specified period. This research offers new insights by analyzing twelve developing and nine developed APEC economies over a span of 25 years, estimating two DOLS models, conducting Dumitrescu–Hurlin causality tests, and presenting evidence of EKC for both types of economies. Consequently, the implementation of policies that foster the preservation of natural areas, the utilization of renewable energies, and the promotion of sustainable tourism practices is recommended.

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Presentación

Cited by 3 publications

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In vivoprotein quality of selected cereal-based staple foods enriched with soybean proteins

In vivoprotein quality of selected cereal-based staple foods enriched with soybean proteins

Theoretical Conceptual Assembly for the Analysis of Sugarcane Agroecosystems in the Central Gulf of Mexico: An Eclectic Model

Tourism, Economic Growth, and Environmental Pollution in APEC Economies, 1995–2020: An Econometric Analysis of the Kuznets Hypothesis

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