Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Mais filtros










Intervalo de ano de publicação
1.
Int J Biol Macromol ; 265(Pt 1): 130949, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38508545

RESUMO

This study addresses the growing interest in bio-based active food packaging by infusing Lepidium sativum (Garden cress) seeds extract (GRCE) into sodium alginate (SALG) films at varying concentrations (1, 3, and 5 %). The GRCE extract revealed six phenolic compounds, with gallic and chlorogenic acids being prominent, showcasing substantial total phenolic content (TPC) of 139.36 µg GAE/mg and total flavonoid content (TFC) of 26.46 µg RE/mg. The integration into SALG films significantly increased TPC, reaching 30.73 mg GAE/g in the film with 5 % GRCE. This enhancement extended to DPPH and ABTS activities, with notable rises to 66.47 and 70.12 %, respectively. Physical properties, including tensile strength, thickness, solubility, and moisture content, were positively affected. A reduction in water vapor permeability (WVP) was reported in the film enriched with 5 % GRCE (1.389 × 10-10 g H2O/m s p.a.). FT-IR analysis revealed bands indicating GRCE's physical interaction with the SALG matrix, with thermal stability of the films decreasing upon GRCE integration. SALG/GRCE5 effectively lowered the peroxide value (PV) of sunflower oil after four weeks at 50 °C compared to the control, with direct film-oil contact enhancing this reduction. Similar trends were observed in the K232 and K270 values.


Assuntos
Alginatos , Lepidium sativum , Alginatos/química , Espectroscopia de Infravermelho com Transformada de Fourier , Embalagem de Alimentos/métodos , Fenóis , Extratos Vegetais/química , Estresse Oxidativo
2.
Int J Biol Macromol ; 255: 128346, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37995780

RESUMO

This study investigated the development of biodegradable films made from a combination of carboxymethyl cellulose (CMC), Polyvinyl alcohol (PVA), and purified extract of broccoli sprout seed (BSSE). The films were characterized for their color, physical properties, surface morphology, crystallinity, mechanical properties, and thermal properties. The addition of BSSE up to 1.4 % to the film matrix imparted opaque color and increased opacity up to 3.652. The films also became less moisture-absorbent 8.21 %, soluble 19.16 %, and permeable to water vapor 1.531 (× 10-10 g.m-1 s-1 pa-1). By utilizing 0.7 % from BSSE inside films, the surface of the films became smoother but became rough with higher concentrations 2.1 % of BSSE. Fourier transform infrared (FT-IR) analysis showed that there was physical interaction between the BSSE extract and the PV/CM matrix. The films showed good thermal stability, and the incorporation of BSSE improved their ability to preserve the acidity, TBARS, peroxide value, and total color differences of butter during cold storage.


Assuntos
Antioxidantes , Brassica , Antioxidantes/farmacologia , Antioxidantes/análise , Carboximetilcelulose Sódica , Álcool de Polivinil , Espectroscopia de Infravermelho com Transformada de Fourier , Permeabilidade , Antibacterianos/análise , Extratos Vegetais , Embalagem de Alimentos , Sementes/química
3.
An Bras Dermatol ; 92(5 Suppl 1): 154-158, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29267478

RESUMO

Inherited Palmoplantar Keratodermas are rare disorders of genodermatosis that are conventionally regarded as autosomal dominant in inheritance with extensive clinical and genetic heterogeneity. This is the first report of a unique autosomal recessive Inherited Palmoplantar keratoderma -sensorineural hearing loss syndrome which has not been reported before in 3 siblings of a large consanguineous family. The patients presented unique clinical features that were different from other known Inherited Palmoplantar Keratodermas -hearing loss syndromes. Mutations in GJB2 or GJB6 and the mitochondrial A7445G mutation, known to be the major causes of diverse Inherited Palmoplantar Keratodermas -hearing loss syndromes were not detected by Sanger sequencing. Moreover, the pathogenic mutation could not be identified using whole exome sequencing. Other known Inherited Palmoplantar keratoderma syndromes were excluded based on both clinical criteria and genetic analysis.


Assuntos
Perda Auditiva Neurossensorial/genética , Perda Auditiva Neurossensorial/patologia , Ceratodermia Palmar e Plantar/genética , Ceratodermia Palmar e Plantar/patologia , Mutação/genética , Adolescente , Biópsia , Criança , Feminino , Humanos , Masculino , Irmãos , Síndrome , Sequenciamento do Exoma
4.
An. bras. dermatol ; 92(5,supl.1): 154-158, 2017. tab, graf
Artigo em Inglês | LILACS | ID: biblio-887085

RESUMO

Abstract Inherited Palmoplantar Keratodermas are rare disorders of genodermatosis that are conventionally regarded as autosomal dominant in inheritance with extensive clinical and genetic heterogeneity. This is the first report of a unique autosomal recessive Inherited Palmoplantar keratoderma -sensorineural hearing loss syndrome which has not been reported before in 3 siblings of a large consanguineous family. The patients presented unique clinical features that were different from other known Inherited Palmoplantar Keratodermas -hearing loss syndromes. Mutations in GJB2 or GJB6 and the mitochondrial A7445G mutation, known to be the major causes of diverse Inherited Palmoplantar Keratodermas -hearing loss syndromes were not detected by Sanger sequencing. Moreover, the pathogenic mutation could not be identified using whole exome sequencing. Other known Inherited Palmoplantar keratoderma syndromes were excluded based on both clinical criteria and genetic analysis.


Assuntos
Humanos , Masculino , Criança , Adolescente , Ceratodermia Palmar e Plantar/genética , Ceratodermia Palmar e Plantar/patologia , Perda Auditiva Neurossensorial/genética , Perda Auditiva Neurossensorial/patologia , Mutação/genética , Síndrome , Biópsia , Irmãos , Sequenciamento do Exoma
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...