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1.
Food Chem ; 402: 134299, 2023 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-36152557

RESUMO

This study aimed to characterize mixtures of goat milk proteins and Agaricus blazei Murrill (ABM) extracts (aqueous, AE and polysaccharides, PE). The mixtures showed stable particles with ζ-potential more negative than -41.1 mV. The addition of AMB extracts to goat milk did not result in a significant particle size change, whereas their addition to heated goat milk significantly increased mean particle diameter (from 194 nm to 225 nm). Fourier Transform Infrared Spectroscopy (FTIR) showed that ABM extracts provoked changes in the secondary structure of goat milk proteins and interactions between polysaccharides and milk proteins predominantly via hydrogen and/or glycoside bonds and hydrophobic interactions. The milk protein profiles revealed proteolytic activity in mixtures with AE resulting in the formation of five new polypeptides. The different microstructures of mixtures with AE and PE were found by Scanning Electron Microscopy (SEM). A schematic representation of possible milk proteins-ABM extracts interactions has been given.


Assuntos
Agaricus , Proteínas do Leite , Animais , Espectroscopia de Infravermelho com Transformada de Fourier , Cabras , Agaricus/química , Polissacarídeos/química , Hidrogênio , Glicosídeos
2.
Molecules ; 27(23)2022 Nov 22.
Artigo em Inglês | MEDLINE | ID: mdl-36500205

RESUMO

Alchemilla vulgaris L. (lady's mantle) was used for centuries in Europe and Balkan countries for treatments of numerous conditions and diseases of the reproductive system, yet some of the biological activities of lady's mantle have been poorly studied and neglected. The present study aimed to estimate the potential of A. vulgaris ethanolic extract from Southeast Serbia to prevent and suppress tumor development in vitro, validated by antioxidant, genoprotective, and cytotoxic properties. A total of 45 compounds were detected by UHPLC-HRMS analysis in A. vulgaris ethanolic extract. Measurement of antioxidant activity revealed the significant potential of the tested extract to scavenge free radicals. In addition, the analysis of micronuclei showed an in vitro protective effect on chromosome aberrations in peripheral human lymphocytes. A. vulgaris extract strongly suppressed the growth of human cell lines derived from different types of tumors (MCF-7, A375, A549, and HCT116). The observed antitumor effect is realized through the blockade of cell division, caspase-dependent apoptosis, and autophagic cell death. Our study has shown that Alchemilla vulgaris L. is a valuable source of bioactive compounds able to protect the subcellular structure from damage, thus preventing tumorigenesis as well as suppressing tumor cell growth.


Assuntos
Alchemilla , Humanos , Alchemilla/química , Antioxidantes/farmacologia , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Etanol , Sérvia
3.
Chem Biodivers ; 17(6): e2000097, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32243062

RESUMO

Herbal drugs are a useful source of different bioactive compounds. Asteraceae species, as the most widespread vascular plants, can be used both as food and as medicine due to the great diversity of recorded chemical components - different phenolic compounds, terpenes, carotenoids, vitamins, alkaloids, etc. The Balkan Peninsula is characterized by great diversity of plants from Asteraceae family, including presence of rare and endemic species. In this review, results of the survey of chemical composition and biological activity, mainly focusing on antioxidant, antimicrobial and anticancer effects of selected Balkans' Asteraceae species were provided. In addition, information on edible plants from Asteraceae family is presented, due to growing interest for the so-called 'healthy diet' and possible application of Balkans' Asteraceae species as food of high nutritional value or as a source of functional food ingredients.


Assuntos
Asteraceae/química , Extratos Vegetais/química , Chás de Ervas , Anti-Infecciosos/química , Anti-Infecciosos/farmacologia , Antioxidantes/química , Antioxidantes/farmacologia , Asteraceae/metabolismo , Bactérias/efeitos dos fármacos , Península Balcânica , Peroxidação de Lipídeos/efeitos dos fármacos , Fenóis/química , Fenóis/farmacologia , Componentes Aéreos da Planta/química , Componentes Aéreos da Planta/metabolismo
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