Publications by authors named "Nagila M P S Ricardo"

Anacardic acid (AA) is a phenolic lipid extracted from cashew nutshell liquid that has antitumor activity. Given the high hydrophobicity of this compound and aiming to create efficient vehicle for its administration in aqueous systems, the objective of the present work was to develop a microcapsule (MCAA) by spray dryer technique, based on the polysaccharide sodium hyaluronate (SH), containing AA as its core, encapsulated from nanoemulsion. The Encapsulation Efficiency of MCAA presented a value equal to 95.

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  • * The study involved synthesizing CuO nanoparticles, which were characterized for their properties and morphology, and then coated with Agaricus blazei Murill polysaccharides to improve stability and reduce toxicity.
  • * The resulting coated nanoparticles demonstrated antifungal activity against Candida infections and lower toxicity in adult zebrafish, suggesting they could be promising candidates for topical treatments in medical applications.
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The present study aimed to associate troxerutin (TRX) with polysaccharides from Agaricus blazei Murill mushroom (PolyAb) in alginate/PVA films and evaluate their effect on wound healing. The physicochemical, mechanical, morphological, and water vapor barrier properties of the films were studied, and their biological potential was analyzed in vivo using the full-thickness wound healing model. The association between TRX and PolyAb present in the polymeric film contributed to increased thermal stability, mechanical resistance, and elasticity when compared to films without TRX, which indicated good miscibility of the excipients.

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The efficient repurposing of agro-industrial waste has significantly enhanced the utilization of food resources. This study aims to propose a methodology for extracting cell wall polysaccharides from residues of mango (Mangifera indica), passion fruit (Passiflora edulis), and cashew (Anacardium occidentale). Polysaccharide fractions were obtained through sequential extraction protocols involving water, cyclohexane-trans-1,2-diamine tetracetate (CDTA), sodium carbonate:CDTA, and potassium hydroxide.

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  • * A study investigated a polysaccharide from Delonix regia (NDr) for its antiviral potential against HSV-1, showing it has a high selectivity index and significantly inhibits viral replication.
  • * NDr demonstrated effective prophylactic and virucidal effects, particularly when applied before or during the early stages of infection, indicating it could be a promising alternative for controlling HSV infections.
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  • The Human Respiratory Syncytial Virus (RSV) causes severe respiratory infections in children and there are currently no effective treatments available.
  • Researchers studied a natural compound derived from mango peels (Mangifera indica), specifically its novel pectin (PMi) and a sulfated version (PSMi), for their antiviral properties against RSV.
  • PSMi showed no harmful effects on cells, completely inhibited RSV infectivity, and demonstrated strong potential as a safe treatment for RSV at low concentrations.
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Dual-species biofilms formed by and have high virulence and drug resistance. In this context, biosurfactants produced by have been widely studied, of which a new derivative (RLmix_Arg) stands out for possible application in formulations. The objective of this study was to evaluate the antibiofilm activity of RLmix_Arg, both alone and incorporated in a gel prepared with Pluronic F-127, against dual-species biofilms of fluconazole-resistant (FRCA) and methicillin-resistant (MRSA) in impregnated catheters.

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Gels containing juca seed galactomannan (JSG) were evaluated for their potential to prevent the progression of dentin erosive wear in an in vitro study with four experimental groups (n = 9). The treatments included distilled water (DW), 0.05% stannous fluoride (121 ppm F), and 0.

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Background: Clove volatile oil (CVO) and its major compound, eugenol (EUG), have anxiolytic effects, but their clinical use has been impaired due to their low bioavailability. Thus, their encapsulation in nanosystems can be an alternative to overcome these limitations.

Objectives: This work aims to prepare, characterize and study the anxiolytic potential of CVO loaded-nanoemulsions (CVO-NE) against anxious-like behavior in adult zebrafish (Danio rerio).

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Macromolecules with antioxidant properties such as polysaccharides from Agaricus blazei Murill mushroom (PAbs) are an excellent option for manufacturing wound dressings. Based on this, this study aimed to analyze preparation, physicochemical characterization, and assessment of the potential wound-healing activity of films based on sodium alginate and polyvinyl alcohol loaded with PAbs. PAbs did not significantly alter the cell viability of human neutrophils in a concentration range of 1-100 μg mL.

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In this study, pentacyclic triterpene-loaded emulsions were stabilized by polysaccharides from Agaricus blazei Murill mushroom (PAb). The drug-excipient compatibility results by Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC) showed the absence of physicochemical incompatibilities. The use of these biopolymers at 0.

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This work aimed the development and evaluation of the wound healing activity of films based on sodium alginate, polyvinyl alcohol (PVA) and Ca loaded with Agaricus blazei Murill hydroalcoholic extract (AbE). Firstly, AbE was prepared using a previously standardized methodology. The films were prepared by casting technique and cross-linked with Ca using CaCl as cross-linking agent.

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The main goal was the development of a polysaccharide microcapsule for anticancer application based on guar gum and sodium alginate for the controlled release of hesperidin and betulinic acid by spray drying technique. The microcapsule showed an Encapsulation Efficiency of 98.15 ± 0.

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This work aimed to evaluate the anthelmintic effect of carvone nanoemulsions on . Three R-carvone nanoemulsions were prepared: uncoated R-carvone nanoemulsions homogenized in a sonicator (UNAlg-son) and homogenized in an ultrahomogenizer (UNAlg-ultra) and sodium alginate-coated R-carvone (CNAlg-ultra). The physicochemical characterizations of the nanoemulsions were carried out.

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The skin is the largest organ in the human body and its physical integrity must be maintained for body homeostasis and to prevent the entry of pathogenic microorganisms. Sodium alginate (SA) and polyvinyl alcohol (PVA) are two polymers widely used in films for wound dressing applications. Furthermore, blends between SA and PVA improve physical, mechanical and biological properties of the final wound healing material when compared to the individual polymers.

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Ethnopharmacological Relevance: The use of mushrooms in medicine is quite old and the first report about the use of genus Agaricus in treatment of ulcers occurred in Byzantine period. This mushroom is widely consumed as food, tea, food supplements, as well as nutraceutical and cosmeceutical applications, being cultivated and appreciated in several countries such as Brazil, Korea, Japan and China.

Aim Of The Study: This study aimed to characterize the chemical profile and the potential gastroprotective effect of hydroalcoholic extract from Agaricus blazei Murill (HEAb).

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  • The study focused on creating active films using pectin and polyphenol-rich extracts from Tommy Atkins mango peels, which contained various phenolic compounds and showed high antioxidant properties.
  • The methanolic extract was found to be more effective at preventing bacterial growth and demonstrated better antioxidant performance compared to the aqueous extract.
  • These films exhibited improved water vapor barrier properties and showed potential for use in food packaging due to their changes in mechanical properties and antioxidant activity.
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Edible mushrooms have been increasingly introduced into the human diet, which has driven research into their functional properties. Thus, Agaricus brasiliensis Murill or Agaricus blazei Murill (ABM) is a species native to the Brazilian biome, whose fruiting body has been used not only for dietary purposes, but also in the development of functional foods or as source of molecules of pharmacological interest. The bioactivity of ABM has been related to the presence of polysaccharides, although the contribution of other metabolites cannot be discharged.

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Magnetic nanocomposites were synthesized for the targeted delivery of hydrophilic bioactives through guidance generated by a magnetic field. Superparamagnetic iron oxide nanoparticles (SPIONs) were used to generate hydroxyethyl starch magnetic nanocapsules (HES MNCs). This synthesis allowed the co-encapsulation of oncocalyxone A (onco A) and surface-modified magnetite nanoparticles (FeO@citrate) into the same nanostructure.

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The objective of this study was to prepare, for the first time, active films and coatings from fruit starch (SPFS) and phenolic stem bark extract (SBPE) from Spondias purpurea L. Starch film formulations were prepared with different SBPE contents (5-20 wt% on starch), then cast and dried into films. SBPE showed higher antioxidant activity and antimicrobial activity against both Gram-negative and Gram-positive bacteria.

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The herpes simplex virus, also known as HSV, is an important human pathogen. Acyclovir (ACV) is the first-line antiviral for the treatment of HSV infections; nevertheless HSV resistance to ACV has been increasingly reported and, therefore, search for alternative drugs have been encouraged. Herein, the effect of Cucumis melo sulfated pectin (SPCm) was evaluated in the HSV-1 infection.

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  • * Three polysaccharide fractions were identified, containing various carbohydrates and polyphenols, and displayed unique chemical characteristics revealed through several analytical techniques.
  • * In both lab tests and animal models, the polysaccharides showed the ability to inhibit blood coagulation and platelet aggregation with minimal risk of causing bleeding, suggesting their potential use in treating thromboembolic conditions.
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Natural polymer-based hybrid nanocomposites have been proposed as one of the most promising tools for biomedical applications, including disease treatment and diagnosis procedures. Xyloglucan nanocapsules can simultaneously load magnetic iron oxide nanoparticles and bioactive for a specific tissue, reducing the processes of degradation and metabolic inactivation of molecules with biological activity. In this work, magnetic nanocapsules of xyloglucan loaded with hydrophilic sulfated quercetin (MNXQ_SO) were successfully synthesized by inverse miniemulsion process through interfacial polymerization.

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The emergence of multidrug-resistant (MDR) bacteria is a global problem, by reducing the effectiveness of traditional antibiotics and decreasing the therapeutic arsenal to treat bacterial infections. This has led to an increase in researches about how to overcome this resistance to antibiotics. One strategy is the repositioning (or repurposing) of existing drugs not previously used to combat microorganisms, rather than the development of new drugs.

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