Publications by authors named "Elizabeth Contreras-Lopez"

The cake, a protein-rich by-product of biofuel production, was the subject of our study. We identified and quantified the ACE inhibitory, antioxidant, and antidiabetic activities of bioactive peptides from a L. var Sevangel protein isolate.

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Arabinoxylans (AX) have become a focal point in the pharmaceutical sector owing to their physicochemical, biological, and functional properties. The purpose of this paper was to present a summary of the utilization of AX as drug release matrices through a bibliometric analysis (BA) and a literature review to spotlight the AX functional characteristics and their technological applications to promote this line of research. The BA was carried out using data from a Web of Science database research, specifically emphasizing the analysis of authors' keywords.

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Article Synopsis
  • The study explored the benefits of probiotics and ACE inhibitors through whey fermentation using specific bacteria (GG, SY-102) and their co-culture.
  • Researchers used various methods to analyze the proteolytic profile and ACE inhibition during fermentation, noting how differently the bacteria grew.
  • Co-culture fermentation resulted in higher protein hydrolysis and ACE inhibition activity, reaching 53.42%, emphasizing the importance of developing effective co-culture products.
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This study evaluated the possible use of a fraction of brewers' spent grain rich in arabinoxylans (BSG-AX) as an excipient that modifies the release of class III drugs (Biopharmaceutics Classification System), by determining the release profile of metformin hydrochloride (MH), in a water medium. The cumulative percentage of MH release showed the best linear fit when modeled with the cumulative distribution function (CDF) of the Weibull distribution ( = 0.993 ± 0.

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Gut microbiota is a group of microorganisms that are deposited throughout the entire gastrointestinal tract. Currently, thanks to genomic tools, studies of gut microbiota have pointed towards the understanding of the metabolism of important bacteria that are not cultivable and their relationship with human homeostasis. Alterations in the composition of gut microbiota could explain, at least in part, some epidemics, such as diabetes and obesity.

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The objective of this paper is to compare conventional, ultrasound, microwave, and French press methods for the extraction of antioxidant compounds from in an aqueous medium. This plant is widely used in Mexican traditional medicine for breast cancer treatment. Despite that, there are few studies on .

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The health benefits attributed to probiotics generate interest in the search of competent strains adapted to several ecological niches, especially those related to traditional beverages and foods of each country. Pineapple tepache, a traditional Mexican fermented beverage, was used for the isolation of lactic acid bacteria with probiotic potential, one of which withstood the in vitro tests. The isolated strain AB-05, which exhibited the tested probiotic functional properties, was designated as Lactobacillus pentosus ABHEAU-05.

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Article Synopsis
  • Amaranth seeds are a nutritious cereal in Latin America, and this study aimed to identify bioactive peptides through enzymatic hydrolysis using alcalase and flavourzyme.
  • The combined use of both enzymes in a continuous process produced hydrolysates with higher bioactive potential compared to single-enzyme processes.
  • Two peptide fractions exhibited significant biological activity, acting as ACE and thrombin inhibitors, along with antioxidant properties, while sequence analysis revealed previously unreported bioactive amino acid chains.
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The brewers' spent grain is a by-product generated during brewery process and is a potential source for arabinoxylans (AX) extraction. In the present work, the extraction and characterization of an arabinoxylan-rich fraction from brewers' spent grain (BSG-AX) were performed, and BSG-AX was evaluated as release matrix for caffeine. The BSG-AX showed an AX content of 72% (w/w), a ferulic acid content of 3.

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Since ancient times, ginger (Zingiber officinale) has been widely used for culinary and medicinal purposes. This rhizome possesses several chemical constituents; most of them present antioxidant capacity due mainly to the presence of phenolic compounds. Thus, the physical conditions for the optimal extraction of antioxidant components of ginger were investigated by applying a Box-Behnken experimental design.

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In the bacterial processes involved in the mitigation of nitrogen pollution, an adequately high carbon-to-nitrogen (C : N) ratio is key to sustain denitrification. We evaluated three natural materials (woodchips, barley grains, and peanut shells) as carbon sources for low C : N wastewater. The amount of organic matter released from these materials to aqueous media was evaluated, as well as their pollution swapping potential by measuring the release of total Kjeldahl nitrogen, N-NH4 (+), NO2 (-), and NO3 (-), and total phosphorous.

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The aim of this research was to develop a method for microextraction and quantification of long and medium chain fatty acids from milk. The proposed method was carried out on three steps: (1) lipids extraction from 10 μL of whole or skimmed milk containing omega-3 fatty acids (FAs) during 12, 24, 48, 72 and 96 h, in 2 mL chloroform: methanol mixture (2:1); (2) acid methylation of FAs; and (3) quantification of FAs methyl esters by gas chromatography. Using this method, the percentage recovery of FAs was higher (67% for whole and 85% for skimmed milk) compared with AOAC method 905.

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Atole is a Mexican pre-hispanic drink prepared traditionally with corn; however, cereals as wheat, rice and amaranth have also been used. The aim of this study was to determine the physicochemical and sensory properties of an amaranth flour to prepare a drink (atole) mentioned above, in order to determine its nutritive value. Proximate analysis of the amaranth, corn and rice drink flours was determined by means of official techniques of AOAC.

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