A5031210163- Bee Products Chemical Analysis
- Phytochemicals and Antioxidant Activities
- Essential Oils and Antimicrobial Activity
- Insect and Pesticide Research
- Postharvest Quality and Shelf Life Management
- Healthcare Regulation
- Nanocomposite Films for Food Packaging
- Natural product bioactivities and synthesis
- Antibiotic Use and Resistance
- Plant biochemistry and biosynthesis
- Pregnancy and preeclampsia studies
- Pneumonia and Respiratory Infections
- Botanical Research and Applications
- Oral microbiology and periodontitis research
- Plant and animal studies
- Phytochemistry Medicinal Plant Applications
- Plant Toxicity and Pharmacological Properties
- Ionic liquids properties and applications
- Material Properties and Processing
- Fern and Epiphyte Biology
- Cardiovascular Issues in Pregnancy
- Lichen and fungal ecology
- Oral and gingival health research
- Nosocomial Infections in ICU
- Polymer Surface Interaction Studies
Universidad Andrés Bello
2023-2024
Pontificia Universidad Católica de Chile
2015-2021
Institute of Inorganic Chemistry of the Slovak Academy of Sciences
2021
Central University of Venezuela
2020
Universidade Paranaense
2015-2017
Universidad de Santiago de Chile
2011
Universidade Estadual de Maringá
2009
Extracts rich in bioactive compounds added to edible films have allowed the development of active packaging that increases shelf life food. However, it is necessary search for solvents are nontoxic and not harmful environment, with natural deep eutectic (NADES) being an attractive easily synthesized alternative. This research aimed design NADES by lyophilization be used extraction anthocyanins from Chilean Luma chequen (Molina) A. Gray berry, subsequently adding them matrix ƙ-carrageenan...
Monofloral Ulmo honey is a very appreciated product in the international market but more information needed order to support their health properties. Total phenolic and flavonoid contents, antioxidant capacity antibacterial activity of monofloral (Eucryphia cordifolia) samples were determined. The contained between 176 208 mg gallic acid eq (GAE)/100 g for total content (TPC) 43–90 Quercetin eq/100 (TFC). ranged 91 152 mM Trolox/g 28–49 DPPH ABTS assays, respectively. All extracts from...
Harvested bee pollen is valuable for its nutritional value and healthy properties. This work relates the botanical origin of sixteen pollens from Chile with their phenolic, protein carotenoid content, antioxidant/antibacterial activities. Our results showed that chemical properties different are associated plant’ species which each one was derived from. Some correlations between were observed. Bee 20.0- 30.4% protein, 2.8-50.2 mg/kg carotenoids, 22.8-918.4 phenolics, 4.51-91.19 mmol Fe+2/kg...
Chilean beekeeping is characterized by a variety of honey types, some unique due to high participation native plant species where nectar collected bees. For the first time flavonoids, phenolic compounds, and antioxidant capacity in honeys Azara integrifolia petiolaris, commonly known as corcolén honeys, have been determined. The results showed content total phenol (between 48.79 153.30 mg GAE/100 g honey), while flavonoid ranged between 8.80 12.33 QE/100 honey. ORAC-FL assay values varied...
It is known that polyphenolic extracts have antibacterial activity, but usually with not very broad spectrum of action. To enhance its individual effect, to combine different has been proposed. In this work, the combined effect 3 and their mixtures (Ulmo Quillay honeys, multifloral pollen) was evaluated. Their polyphenol content quantified by HPLC-DAD analysis. E. coli, S. aureus, Salmonella spp, Pseudomonas L. acidophilus, B. thermosphacta were used as foodborne pathogenic-spoilage strains...
In this work, the individual and combined antioxidant capacities of three polyphenolic extracts from Chilean bee industry (multifloral pollen, Quillay honey, Ulmo honey) were evaluated using a mixture design method. The content, flavonoid content capacity singular, binary, ternary extract mixtures determined. results indicate that there is correlation between contents phenols total flavonoids radical scavenging capacity. When combining extracts, both synergistic, additive antagonistic...
Honeybee pollen (HBP) is a mixture of floral collected by honeybees near the hive. It characterized composition rich in phenolic compounds, carotenoids and vitamins that act as free radicals scavengers, conferring antioxidant antibacterial capacity to matrix. These bioactive properties are related botanical origin honeybee pollen. samples were from different geographical locations central Chile, their total carotenoid content, polyphenols profile HPLC/MS/MS, DPPH radical scavenging capacity,...
O uso de óleos essenciais para o tratamento patologias pele vem crescendo a cada dia, são facilmente comercializados diferentes fins. Este trabalho visou comparação e comprovação do efeito antimicrobiano óleo essencial comercial Melaleuca alternifolia extraído direto da planta frente cepa Staphylococcus aureus (ATCC-25923). Para os testes foram escolhidos dois comerciais tratados neste estudo como A B extração nas sazonalidades. técnica utilizada foi poço por Pour Plate. cultura bacteriana...
Sticherus squamulosus, Hymenophyllum dentatum, Blechnum microphyllum, Polypodium Feuillei, chilense, Lophosoria quadripinnata, and Lissopimpla excelsa are native fern species found in southern Chile often used traditional medicine. However, their bioactive properties have not been confirmed. In this study, ethanolic extracts of ferns exhibited significant antibacterial capacity against human pathogens. H. dentatum S. squamulosus were selected for further analysis owing to antimicrobial...
Background: Despite the association between cryptogenic stroke and patent foramen ovale (PFO), data on efficacy of PFO closure for secondary prevention remains limited. Guidelines recommend only patients with a prior stroke. As recent studies indicate correlation elevated Lipoprotein(a) levels stroke, its measure could be relevant in evaluating need closure. Aims/Hypothesis: This study aims to determine if Lipoprotein (a) increase likelihood or transient ischemic attack (TIA). We hypothesize...
Tristerix corymbosus flower is used in traditional medicine for its antioxidant and antibacterial properties, which are attributed to phenolic compounds. These compounds present different grades of associations with the plant matrix (free, esterified, insoluble). This study aimed determine fraction contributes most total flavonoid contents bioactive properties. The content was higher free fraction. In contrast, esterified exhibited highest greatest number characterised (chlorogenic,...
OBJETIVOS: Investigar a prevalência de Streptococcus pneumoniae (pneumococos) na nasofaringe crianças sadias atendidas em creches municipais da cidade Umuarama (PR). Avaliar susceptibilidade aos antimicrobianos dos pneumococos isolados. MÉTODOS: Secreção 212 foi coletada no período abril outubro 2008. Após semeadura espécimes ágar sangue e incubação 37 °C por 24-48 horas, as colônias suspeitas pertencerem S. foram identificadas pela α-hemólise, sensibilidade à optoquina bile solubilidade. A...
Cien.Inv.Agr.44(1): 64-74.Peumus boldus is an endemic Chilean tree whose edible fruit lack a history of scientific research.The aim this study was to determine its nutritional composition (moisture, ash, crude fiber, proteins, carbohydrates and lipids) polyphenolic content (total phenolic content, HPLC-DAD, HPLC-MS/MS analysis) at different stages development.The results show that the decreased in fiber total throughout development, while carbohydrate protein increased.An increase molecules...
The adoption of health risk behaviors (low level habitual physical activity and inadequate food nutrient intake) has increased the prevalence overweight/obesity, particularly among adolescents. Thus, disorders metabolic diseases in this population. aim study was to identify syndrome (MS) analyze its association with sport participation overweight adolescents aged 11 17 years. A total 683 (301 boys 382 girls) were randomly selected compose sample. MS established based on fasting glucose,...
Nalca is an edible rhubarb-type plant from the southern of Chile; with studies focussing on petiole chemical and biological properties. This work evaluated for first time antibacterial capacities three organs nalca against Escherichia coli, Staphylococcus aureus Pseudomonas aeruginosa. Petiole (P), root (R) flower (F) ethanolic extracts at different concentrations (25, 50, 100 mg/mL) were by means agar diffusion assay MIC. The result showed that activities are bacteria concentration...