Yolanda Freile-Pelegrin

Yolanda Freile-Pelegrin
Center for Research and Advanced Studies of the National Polytechnic Institute | Cinvestav · Departamento de Recursos del Mar (Mérida)

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102
Publications
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Publications

Publications (102)
Article
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Herpes simplex virus 1 (HSV-1) remains a prominent health concern widespread all over the world. The increasing genital infections by HSV-1 that might facilitate acquisition and transmission of HIV-1, the cumulative evidence that HSV-1 promotes neurodegenerative disorders, and the emergence of drug resistance signify the need for new antiviral agen...
Article
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The high susceptibility to deterioration and diseases during the supply chain and/or during the storage of fresh products is a problem in the industry, and edible films are proposed as efficient methods to preserve its quality. The objective was to obtain and characterize silver nanoparticles (AgNPs) and determine their effect on optical, barrier a...
Article
Graphene and its derivates are at the center of an ever-growing research effort due to their exceptional properties; however, their applications remain limited due to high production costs. Obtaining carbonaceous bidimensional materials from biomass is now intensively studied; however, most methodologies are based on controlled atmosphere (N2) and...
Article
Since 2014, the Mexican Caribbean beaches have received massive influxes of the brown seaweed Sargassum (S. fluitans III, S. natans I and S. natans VIII), causing serious ecological and economic effects. Concentrations of arsenic (As), cadmium (Cd), copper (Cu), iron (Fe), lead (Pb), and zinc (Zn) were determined over an annual cycle in pelagic Sar...
Article
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The production of bionanocomposite films based on agar (A), melipona honey (MH), and reduced graphene oxide (RGO) by solution cast method was performed. The synthesized RGO was characterized in terms of morphology, elemental composition, structure, thermal, surface area, particle size, and resistivity properties. The RGO showed a laminar structure...
Article
In the last decade, unprecedented arrivals of pelagic Sargassum (Sargassum influx) have been reported for the Caribbean coasts causing severe ecological and economical affectations and remarking the necessity to characterize the phenomenon. In the north coast of the Mexican Caribbean, spatial characterization of Sargassum influx was performed in te...
Article
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Mass blooms and stranding of pelagic Sargassum spp. in the Atlantic, termed Sargassum events are becoming more frequent in response to several factors: nutrient enrichment, increased temperature, changes in climatological patterns, but some causes remain unknown. The magnitude of Sargassum events in the Caribbean Sea since 2011 make us aware of the...
Article
Solieria filiformis has been reported to havemolecules with various biological activities. In this studywe used environmentally friendly extraction methods, such as enzyme-assisted extraction (EAE), as a first step to obtain bioactive compounds from this species. Five combinations of protease (PRO) and carbohydrase (AMG)were utilized (1:0, 0:1, 2:1...
Article
The genus Sargassum is well represented by benthic and pelagic species, some of which forms massive aggregates that can travel large distances due to the force of the ocean currents. Although they constitute an essential habitat for fish and invertebrate species, large accumulations of Sargassum in coastal areas generates several economic, environm...
Article
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Massive accumulations of pelagic species of Sargassum have generated recent social, economic and ecological problems along Caribbean shores. In the Mexican Caribbean, these events have prompted the study of diverse biological and ecological aspects of these macroalgae. However, studies on their associated biota, including Hydrozoa, remain scarce. T...
Article
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Seaweeds can produce certain pigments under specific light, salinity, and nutrient conditions. These pigments have important biological activities, which have been cited in numerous published literature; thus, they have been considered of nutraceutical importance. Solieria filiformis and Gracilaria cornea (Rhodophyta) have been studied for their ab...
Article
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The filamentous green seaweed Chaetomorpha can grow in a wide range of salinities and temperatures, and it is often reported as nuisance in other cultures due to its proliferation capacity and ordinarily discarded. However, Chaetomorpha can represent a promising feedstock for different purposes due to their potential valuable compounds. In the pres...
Article
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During the experimental cultivation of the red alga Halymenia floresii under Integrated MultiTrophic Aquaculture (IMTA), the establishment of opportunist green algae and the colonization of sessile invertebrates, which were usually disturbing the cultivation, were not observed. The culture tanks were clean and the surface of the H. floresii was rem...
Article
Several species of Sargassum have been reported from the Yucatan peninsula coast, many of which end up as beach cast material, accumulating on the coast during colder months. The phenotypic plasticity of Sargassum makes specimen identification difficult. Two approaches were used in the current study to corroborate identification of the most abundan...
Chapter
Historically, enzyme-assisted extraction was applied to seaweeds to find a new ecofriendly way for phycocolloid extraction. A first evolution in the use of this novel extraction method leads to active fractions from seaweeds (not only polysaccharides) for agriculture, health, food, feed, or cosmetic applications. Since 2015, a second evolution has...
Article
Rhodymenia pseudopalmata lives in the intertidal zone receiving high doses of solar radiation, including the potentially harmful UVR. Previous studies proved it ability to adapt to different artificial light intensities and salinity concentrations. The aim of this study was to describe the differences on the Mycosporine-like amino acids (MAAs), phe...
Article
High diversity of marine macroalgae is reported for Mexican coasts, including numerous endemic species. Seaweed research in Mexico has focused on the northern regions of the Pacific coast (Temperate Pacific and Gulf of California) and on the Mexican Caribbean coast, leaving aside other regions (Tropical Pacific and Gulf of Mexico). Utilization of s...
Article
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Neglected tropical diseases (NTDs) are a group of diseases that are predominant in the poorest parts of the world affecting 1.4 billion people. The development of new drugs is urgently needed in order to combat these forgotten diseases. Natural products from marine organisms have been widely explored as a source of new bioactive molecules. However,...
Chapter
Macroalgae surfaces are considered as a potentially suitable substratum present underwater for the dynamic epibiotic microbiome. They secrete various organic substances as nutrients for the multiplication of bacteria and the formation of microbial biofilms. The microbial biofilm itself acts as a biological defence mechanism to prevent the establish...
Article
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Marine macroalgae (seaweed) are an excellent source of novel bioactive metabolites. The biorefinery concept applied to seaweed facilitates the extraction of many chemical constituents from the same biomass ensuring that the resource is used fully, generating few residues through a succession of extraction steps. In the present study, the biomass of...
Article
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Superparamagnetic nanoparticles coated with natural polysaccharides are of great interest for biomedical applications due to their fast response to an external and high-frequency electromagnetic field and their biocompatibility. One of the greatest challenges in the development of these nanoparticles is related to the specific characteristics and p...
Chapter
Biodegradable polyesters obtained from renewable resources or by synthesis from fossil resources can be now blended with low-price organic fillers to produce biocomposites as an alternative to solve pollution problems and attracted attention in the development of new green materials. Biocomposites produced by blending low-cost fillers into biodegra...
Article
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Growth, biochemical composition and antioxidant capacity of Rhodymenia pseudopalmata were studied under controlled laboratory conditions. Cultures were exposed to five salinities ranging from 20, 25, 30, 35 and 40 psu under three photosynthetic active radiations (PAR) 50, 100 and 200 μmol photons m⁻²s⁻¹. Rhodymenia pseudopalmata daily growth rates...
Article
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Carrageenan yield, physicochemical properties, and antiviral activity of the carrageenan from Solieria chordalis (Rhodophyceae, Solieriaceae) harvested at the Brittany coast (France) were investigated. S. chordalis carrageenan was extracted by conventional and the microwave assisted extraction (MAE) methods. The effect of different parameters durin...
Article
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Fucoidans are sulfated polysaccharides with proven pharmacological effects localized in the cell wall of marine brown algae. The majority of studies have been performed with temperate brown algal species, but in recent years, the evaluation of species from tropical areas has been growing. The aim of this study was to determine the protective effect...
Chapter
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Many petrol-based synthetic polymers are widely used in different daily life applications; however, the waste that these generate constitutes a large ecological problem, which has increased environmental and legislative pressure to reduce it. Research on biocomposites is currently focusing on the cost reduction of biodegradable plastics. The blendi...
Article
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Crude and alkali treated carrageenan from the cultivated marine alga Solieria filiformis (Rhodophyta) were obtained, characterized and evaluated for their cytotoxic and antiprotozoal activities. Yields, molecular weights and chemical composition of carrageenans were determined. Their structures were elucidated through spectroscopic techniques inclu...
Article
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Polysaccharides extracted from Rhodymenia pseudopalmata, Solieria filiformis, Hydropuntia cornea (Rhodophyta) and Sargassum fluitans (Phaeophyceae) were evaluated for its cytotoxic and antiviral activities against Herpes simplex virus (HSV-Type 1). Chemical structures were characterized by FT-IR spectroscopy and 13C-NMR analyses. Polysaccharides fr...
Article
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Rhodymenia pseudopalmata is a red alga that grows at the Caribbean coast of the Yucatan Peninsula and has been proven successful in cultivation. In this study we present the lipid composition of R. pseudopalmata collected from wild populations during three different seasons of 2013. Cultured material was also analyzed and compared in order to evalu...
Article
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Sulfated polysaccharides (SPs) extracted from five seaweed samples collected or cultivated in Mexico (Macrocystis pyrifera, Eisenia arborea, Pelvetia compressa, Ulva intestinalis, and Solieria filiformis) were tested in this study in order to evaluate their effect on measles virus in vitro. All polysaccharides showed antiviral activity (as measured...
Poster
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The aim of this research was to evaluate the physiological and biochemical responses of R. pseudopalmata to solar irradiation under exposed conditions of culture. Maximum Quantum Yield of PSII (Fv/Fm), antioxidant capacity and Anti‐UV compounds were evaluated.
Chapter
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Carrageenans are a class of sulfated galactans extracted from different species of red seaweed (Rhodophyta). This family of polysaccharides has a galactose backbone, which differs in the proportion and location of the ester sulfate groups and the proportion of 3,6- anhydrogalactose groups. The differences in composition and conformation produce a w...
Article
Seaweed waste (SWW) is a residue or by-product from the filtration step of the agar extraction process, and it has been explored as an inexpensive and effective filler for incorporation by melt blending into a poly(lactic acid) (PLA) matrix. PLA-SWW biocomposites were manufactured with various contents of SWW (0, 5, 10, 15, and 20 wt %) using a she...
Article
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Reactive oxygen species (ROS) are involved in initiating and promoting several hepatic diseases. This study was designed to evaluate the in vitro hepatoprotective effect and antioxidative activity of the fucoidan extract from Turbinaria tricostata (FTt) from the coast of the Yucatan Peninsula (Mexico). We compared two different mild condition extra...
Article
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Gracilariopsis tenuifrons is a red alga living in the upper intertidal zone of Playa de Carmen (Quintana Roo, Mexico), where abiotic stressors occur over the year. A high antioxidant capacity has been previously demonstrated for G. tenuifrons from the Mexican Caribbean. In this study, we evaluated the photosynthetic activity, pigment composition an...
Article
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Context: The hexane extracts of Dictyota ciliolata Sonder ex Kützing (Dictyotaceae), Padina sanctae-crucis Børgesen (Dictyotaceae), and Turbinaria tricostata E.S. Barton (Sargassaceae) were found to exhibit cytotoxic and antiproliferative activities in vitro. Bioactive compounds responsible for these activities have not been studied in detail for...
Article
Composites of magnetic particles into polymeric matrices have received increasing research interest due to their capacity to respond to external magnetic or electromagnetic fields. In this study, agar from Gelidium robustum has been chosen as natural biocompatible polymer to build the matrix of the magnetic carbonyl iron particles (CIP) for their u...
Chapter
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Phenolics, sometimes called polyphenolic compounds, are present in a variety of terrestrial and marine plants. They are utilized as important components of both human and animal diets for their antioxidant capacity. More than 8000 phenolic structures are currently known (Bravo 1998). To date, most polyphenols isolated from marine sources and refere...
Article
Full-text available
Phenolics, sometimes called polyphenolic compounds, are present in a variety of terrestrial and marine plants. They are utilized as important components of both human and animal diets for their antioxidant capacity. More than 8000 phenolic structures are currently known (Bravo 1998). To date, most polyphenols isolated from marine sources and refere...
Article
Full-text available
Alginates, agar and carrageenan are the main commercial water-extracted polysaccharides sourced from brown and red marine algae. These phycocolloids exhibit high viscosity, and stabilizing, emulsifying and unique gelling properties. Agar and carrageenan form thermoreversible gels while alginates form ionic non-thermoreversible gels; therefore they...
Article
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Seasonal variation of fatty acid composition of Halymenia floresii (Rhodophyta algae) was determined by conventional methods and gas chromatography-mass spectrometry (GC-MS). Three saturated fatty acids (SAFA) were identified (C14:0, C16:0, C18:0) and a monounsaturated (MUFA) C18:1 Δ9. Results indicated a cons-tant SAFA/MUFA proportion throughout t...
Article
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Hypnea musciformis (Wulfen in Jacqu.) J. V. Lamour. (Rhodophyta) was investigated for its carrageenan production. Traditionally, the desulfation process for carra-geenans has been promoted by an alkaline treatment of up to 3 h by conventional heating during carrageenan extraction. New extraction techniques based on microwave irradiation may acceler...
Article
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In the Yucatan Peninsula coast, a large diversity of seaweed species are found, and recent studies have reported the presence of metabolites with pharmaceutical importance. In this study, a biological screening of brown seaweed extracts from Dictyota ciliolata, Padina sanctae-crucis, Sargassum fluitans, and Turbinaria tricostata was carried out. Th...
Article
Full-text available
Composites of magnetic particles in a polymeric matrix have received increasing interest due to their capacity to respond to external magnetic or electromagnetic fields. Algal polysaccharides such as agar are used extensively as gel-forming agents, thickeners, and stabilizers due to their low cost and high degree of biocompatibility and biodegradab...
Article
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Polysaccharides composition of the tropical brown seaweeds Turbinaria turbinata, Sargassum filipendula, Dictyota caribaea and Padina perindusiata collected at Yucatan Peninsula (Mexico) was determined in this study. Crude fucoidan extracted with HCl and alginate extracted with a hot alkali solution were characterized in terms of their molecular wei...
Article
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In this study, we have tested the effect of seaweed stocking density in an experimental seaweed bio-filter using the economically important red sea-weed Hydropuntia cornea integrated with the cultivation of the pink shrimp Farfantepenaeus bra-siliensis. Nutrient removal efficiency was evaluated in relation to seaweed stocking density (2.5, 4, 6 and...
Article
Full-text available
Seasonal variation of fatty acid composition of Halymenia floresii (Rhodophyta algae) was determined by conventional methods and gas chromatography-mass spectrometry (GC-MS). Three saturated fatty acids (SAFA) were identified (C14:0, C16:0, C18:0) and a monounsaturated (MUFA) C18:1 Δ9. Results indicated a constant SAFA/MUFA proportion throughout th...
Article
Full-text available
Carpospore output and development in the marine red alga Hydropuntia cornea J. Agardh. were increased by adding polyamines (PAs) (putrescine, spermidine and spermine) singly or in combinations at 10(-9), 10(-6) and 10(-3) M. Cell divisions after spore release and development of apical axis between 17 and 21 days characterized carpospore development...
Article
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Agar obtained from the red alga Hydropuntia cornea was blended with polyvinyl alcohol (PVOH) in order to produce biodegradable films. In this study, we compare the properties of biopolymeric films formulated with agars extracted from H. cornea collected at different seasons (rainy and dry) in the Gulf of Mexico coast and PVOH as synthetic matrix. T...
Article
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Very few studies have been performed to evaluate the effect of culture conditions on the production or activity of active metabolites in algae. Previous studies suggest that the synthesis of bioactive compounds is strongly influenced by irradiance level. To investigate whether the antiproliferative activity of Udotea flabellum extracts is modified...
Article
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Carrageenan, a hydrocolloid used in the food and pharmaceutical industry mainly as a thickener and stabilizer, has an annual global market of US $450 million. In Mexico, carrageenan imports doubled during the last years, reaching 4,400t in 2008. Any carrageenan industrial project demands a regular supply of raw material from reliable sources capabl...
Article
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Purpose: Extracts of the green alga, Penicillus dumetosus, have shown antiproliferative activity against several cancer cell lines. The aim of this study was to evaluate if this activity is modified after cultivation. Methods: P. dumetosus was cultured under different light treatments. After 10, 20 and 30 days, alga samples were collected and their...
Article
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Increasing worldwide demand and development of new applications of carrageenan have added urgency to the search for new or additional raw material sources. Native and alkali-treated carrageenan from Halymenia floresii from Yucatán was extracted and preliminarily characterized. Results showed that this species contains a highly sulfated carrageenan,...
Chapter
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China has long been known for manure-based integrated multiple species fish farming technology. Commonly known as “polyculture,” this traditional Chinese system is practiced in pond aquaculture where several fish species are reared together, creating a multi-output production structure. For example, polyculture of carps with animal and plant husban...
Article
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Lobophora variegata, a brown alga collected from the coast of the Yucatan peninsula, Mexico, was studied for antiprotozoal activity against Giardia intestinalis, Entamoeba histolytica and Trichomonas vaginalis. The whole extract showed the highest activity against T. vaginalis, with an IC(50) value of 3.2 microg/mL. For the fractions, the best anti...