Biofouling causes major economic losses in the maritime industry. In our site study, Bay of La Paz (Gulf California), biofouling on immersed structures is a problem and treated mostly with copper-based antifouling paints. Due to known environmental effect such treatments, search for environmentally friendly alternatives this zone high biodiversity priority ensure conservation protection species. The aim work was link chemical ecology marine biotechnology: indeed, natural defense macroalgae...

The current investigation sought to explore the nature of secondary metabolites in algae, Laurencia pacifica.This report details first isolation sesquiterpenes isoaplysin (1), isolaurenisol (2), debromoisolaurinterol (3), debromoaplysinol (4), laur-11-en-10-ol (5), 10α-hydroxyldebromoepiaplysin (6), and previously unknown 10-bromo-3,7,11,11-tetramethylspiro[5.5]undeca-1,7-dien-3-ol (7) from pacifica. Isoaplysin (1) (4) showed promising levels growth inhibition against a panel cancer-derived...

The fucosterol has been reported numerous biological activities. In this study, the activity

Los alginatos son polisacaridos que se extraen de las algas cafes. Estos tienen  propiedades para formar geles y soluciones altamente viscosas, por lo emplean en la industria alimenticia, farmaceutica textil, entre otras. Este trabajo revision describe etapas optimizadas a nivel planta piloto produccion alginatos. El proceso consiste tratar con solucion HCl pH 4, extraer el alginato una Na 2 CO 3 10 calentando 80 o C diluir pasta separar particulas insolubles un filtro rotatorio al vacio....

Summary Yield and physico‐chemical properties of agar from G racilaria veleroae E . Y D awson vermiculophylla ( O hmi) P apenfuss were studied the chemical composition two seaweeds was determined. Samples collected seasonally summer 2003 to spring 2005. The yield did not vary significantly between seasons for both species. lowest gel strength obtained (207.5 g cm –2 ) in highest (793.1 winter 2004. Melting temperatures hysteresis higher , whereas gelling 3,6‐anhydrogalactose content...

The number of patients diagnosed with Alzheimer's disease (AD) increases each year, and there are currently few treatment strategies to decrease the symptoms AD; furthermore, these not sufficient reduce memory loss in AD patients. In this work, vitro silico studies were performed evaluate effects fucosterol, which was extracted from an algal source characterized by liquid chromatography-mass spectra (LC-MS), as inhibitor Aβ1-42 aggregation. Experimental studies, including protein gel...

Allelopathy between phytoplankton species can promote cellular stress and programmed cell death (PCD). The raphidophyte Chattonella marina var. marina, the dinoflagellates Margalefidinium polykrikoides Gymnodinium impudicum have allelopathic effects on catenatum; however, physiological mechanisms are unknown. We evaluated whether effect promotes activates PCD in G. catenatum. Cultures of catenatum were exposed to cell-free media C. M. impudicum. mortality, superoxide radical (O2●−)...

Abstract The proximate chemical composition of Sargassum horridum was determined monthly, including extract yields alginate, crude fucoidan, and ethanolic extract. In addition, the biological activity (antioxidant antibacterial) anticoagulant fucoidan were examined. Significant monthly variation found in (moisture, protein, ash, lipids, fiber, carbohydrates, gross energy), as well yields. maximum yield (13.5% dry weight) alginate (21.4% occurred May. Crude increased clotting time at all...

Background and Objective: Marine environment represents countless diverse resource for new drugs to combat major diseases.Extracts from four Laurencia species (L.johnstonii, L. pacifica, gardneri papillosa) Baja California Sur, México were evaluated their antioxidant, antibacterial cytotoxic activity.Methodology: The antioxidants activity of sp. using the radical scavenging in three vitro radicals: 1,1-Diphenyl-2-picrylhydrazyl (DPPH), 2,2'-Azino-bis (3-ethylbenzthiazoline-6-sulfonic acid)...

The in vitro anticoagulant activity of 41 water extracts various seaweeds from Baja CaliforniaSur, Mexico was evaluated. In this study, nine exhibited the prothrombin time assay and 29 were positive activated partial thromboplastin assay. extract obtained at 25 °C brown seaweed Eisenia arborea most active both assays, increasing normal blood clotting-time over 300 s 100 mg mL-1. fractionation by anion exchangechromatography yielded 3 fractions. Fraction 2 eluted with 1.0 M sodium chloride...

Acanthophora spicifera is an invasive red alga that was recently detected in La Paz Bay, Baja California Sur, Mexico, where it has developed into a large biomass. Because new species the region, characteristics and properties of soluble polysaccharides (SPs) contains are unknown. To determine content, chemical composition, SPs A. spicifera, monthly samplings were carried out 2013 at Point Roca Caimancito native alkali-treated extracted characterized. The alkaline treatment produced lower...

<title>Abstract</title> A biofilm is a complex microbial community, representing the initial stage in biofouling formation. Consequently, it responsible for significant economic losses several industrial sectors worldwide. Therefore, there constant need safer and environmentally friendly coatings, particularly those derived from new marine sources such as seaweeds with antifouling properties. Red algae produce metabolites that prevent bacterial attachment formation by disrupting membranes,...

Rays and skates are fish with flattened, pancake-shaped bodies that frequent shallow water, where they often lie hidden under the sand. Some of batoid species characterized by a stinger serrated edges, which is covered tegument made up specialized cells secrete toxins enzymes proteolytic activity. Stingray injuries to humans common in warm coastal regions. In this report, we present case an injury due insertion barb from Pacific cownose ray, Rhinoptera steindachneri. We assess tissue...

Background and Objective: Invertebrates comprises more than fifty percent of marine animals.Among them, sponges are the most prolific source bioactive compounds.Suberites aurantiacus (S. aurantiacus) is an abundant sponge in Mexican Pacific, which has been scarcely studied, for this reason authors screened it its bioactivities.The current study proposed to determine enzymatic inhibition scavenger, toxic antibacterial activities from Suberites aurantiacus.Materials Methods: S. samples were...