Papers by María Sumaya-martínez
Ciencia e investigación agraria, 2015
Rheology is fundamentally important in food production to understand the way in which a substance... more Rheology is fundamentally important in food production to understand the way in which a substance moves and behaves to be able to transport it and mix it during processing. The objective was to quantify the extraction and rheologically characterize starch and pectin of ‘Pera’ (MusaABB) banana fruits. Per every 100 g of dried flour of ‘Pera’ (MusaABB) banana fruits extraction yields of 56.53% of starch and 9.73% of pectin were obtained. The rheological profile of the polysaccharides had a consistency index (Pa sn) of 0.0325 (starch) and 0.0140 (pectin) and flow indexes (n, dimensionless) of 0.7225 (starch) and 0.7800 (pectin). Both polysaccharides showed a non-Newtonian flow and pseudoplastic behavior. The ‘Pera’ (MusaABB) banana fruits may represent an unconventional alternative source for extracting starch and pectin, and could be potentially used in the food industry as an ingredient or to produce edible coatings.
International Journal of Molecular Sciences, 2011
Recent studies have shown that handcrafted glass-clay containers are a health risk because they c... more Recent studies have shown that handcrafted glass-clay containers are a health risk because they can be contaminated by heavy metals, which can be transferred to food, thus reaching the human body to potentially cause illness. Therefore, in the present work, we evaluate the leaching of lead, cadmium, and cobalt from glass-clay containers into two types of food: tomato sauce (salsa), and chickpea puree. The containers were obtained from four regions in the Mexican state of Hidalgo. Repetitive extractions from the containers were carried out to quantify the leaching of the heavy metals into the salsa, the chickpea puree, and acetic acid using the technique proposed by the USFDA. The results show that greater use of the containers leads to more leaching of heavy metals into both types of food and into the acetic acid, with the greatest metal extraction recorded for the Ixmiquilpan vessels. These results indicate that the metals present in the glass-clay containers leach into OPEN ACCESS the food and that increased reuse increases the risk to the people who use them in food preparation.
World Journal of Gastroenterology, 2014
The liver is one of the most important organs in the body, performing a fundamental role in the r... more The liver is one of the most important organs in the body, performing a fundamental role in the regulation of diverse processes, among which the metabolism, secretion, storage, and detoxification of endogenous and exogenous substances are prominent. Due to these functions, hepatic diseases continue to be among the main threats to public health, and they remain problems throughout the world. Despite enormous advances in modern medicine, there are no completely effective drugs that stimulate hepatic function, that offer complete protection of the organ, or that help to regenerate hepatic cells. Thus, it is necessary to identify pharmaceutical alternatives for the treatment of liver diseases, with the aim of these alternatives being more effective and less toxic. The use of some plants and the consumption of different fruits have played basic roles in human health care, and diverse scientiic investigations have indicated that, in those plants and fruits so identified, their beneficial effects can be attributed to the presence of chemical compounds that are called phytochemicals. The present review had as its objective the collecting of data based on research conducted into some fruits (grapefruit, cranberries, and grapes) and plants [cactus pear (nopal ) and cactus pear fruit, chamomile, silymarin, and spirulina], which are consumed frequently by humans and which have demonstrated hepatoprotective capacity, as well as an analysis of a resin (propolis) and some phytochemicals extracted from fruits, plants, yeasts, and algae, which have been evaluated in different models of hepatotoxicity.
Molecules, 2014
For many years, several studies have been employing lectin from vegetables in order to prove its ... more For many years, several studies have been employing lectin from vegetables in order to prove its toxic effect on various cell lines. In this work, we analyzed the cytotoxic, antiproliferative, and post-incubatory effect of pure tepary bean lectins on four lines of malignant cells: C33-A; MCF-7; SKNSH, and SW480. The tests were carried out employing MTT and 3 [H]-thymidine assays. The results showed that after 24 h of lectin exposure, the cells lines showed a dose-dependent cytotoxic effect, the effect being higher on MCF-7, while C33-A showed the highest resistance. Cell proliferation studies showed that the toxic effect induced by lectins is higher even when lectins are removed, and in fact, the inhibition of proliferation continues after 48 h. Due to the use of two techniques to analyze the cytotoxic and antiproliferative effect, differences were observed in the results, which OPEN ACCESS Molecules 2014, 19 9611
International Journal of Molecular Sciences, 2011
Commercialization of cactus pears based on their antioxidant properties can generate competitive ... more Commercialization of cactus pears based on their antioxidant properties can generate competitive advantages, and these can turn into business opportunities and the development of new products and a high-value ingredient for the food industry. This work evaluated the antioxidant activities (1,1-diphenyl-2-picrylhydrazyl radical-scavenging, protection against oxidation of a β-carotene-linoleic acid emulsion, and iron (II) chelation), the content of total phenolic compounds, ascorbic acid, betacyanin, betaxanthin and the stability of betacyanin pigments in presence of Cu (II)-dependent hydroxyl radicals (OH•), in 18 cultivars of purple, red, yellow and white cactus pear from six Mexican states. Our results indicated that the antiradical activities from yellow and white cactus pear cultivars were not significantly different (p < 0.05) and were lower than the average antiradical activities in red and purple cultivars. The red cactus pear from the state of Zacatecas showed the highest antioxidant activity. The free radical scavenging activity for red cactus pears was significantly correlated (p < 0.05) to the concentration of total phenolic OPEN ACCESS Int. J. Mol. Sci. 2011, 12 6453 compounds (R 2 = 0.90) and ascorbic acid (R 2 = 0.86). All 18 cultivars of cactus pears studied showed significant chelating activity of ferrous ions. The red and purple cactus pears showed a great stability when exposed to OH•.
Molecules, 2010
In vitro antioxidant activity for 12 stannoxanes derived from Ph 3 SnCl (compounds 1-3), Ph 2 SnC... more In vitro antioxidant activity for 12 stannoxanes derived from Ph 3 SnCl (compounds 1-3), Ph 2 SnCl 2 (compounds 4-6), Bu 3 SnCl (compounds 7-9), and Bu 2 SnCl 2 (compounds 10-12), was assayed qualitatively by the chromatographic profile with 1,1diphenyl-2-picrylhydrazil (DPPH) method and by two quantitative methods: the DPPH radical scavenging activity and Ferric-Reducing Antioxidant Power (FRAP) assays. The results were compared with those obtained with the starting materials 2-pyridinecarboxylic acid (I), 3-pyridinecarboxylic acid (II) and 4-pyridinecarboxylic acid (III), as well as with standard compounds, such as vitamin C and vitamin E, respectively. The in vitro antiradical activity with DPPH of diphenyltin derivative 5 showed a very similar behavior to vitamin C at a 20 g/mL concentration, whereas according to the FRAP method, compound 8 was better. This difference is due to the mechanism of the antioxidant process. The Structure-Activity Relationships (SAR) for both methods is also reported.
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Papers by María Sumaya-martínez