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Tytuł:
Health-promoting properties of bioactive compounds of tea and the influence of method of infusion preparation and time on their contenth®
Właściwości prozdrowotne związków bioaktywnych występujących w herbacie oraz wpływ sposobu i czasu parzenia na ich zawartość®
Autorzy:
Skolmowska, Dominika
Kołota, Aleksandra
Stachoń, Małgorzata
Lachowicz, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1536055.pdf
Data publikacji:
2020
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
tea
bioactive compounds
antioxidant activities
herbata
związki bioaktywne
działanie antyoksydacyjne
Opis:
Tea is one of the most consumed non-alcoholic beverages in the world, not only because of its unique taste and aroma, but also health-promoting properties resulting from the presence of bioactive compounds. The main ingredients of tea which are attributed to have beneficial health effects are polyphenols. The content of bioactive compounds in tea depends on the particular type of tea, way of leaves processing, as well as method and time of infusion preparation. The aim of the article is to characterize the health-promoting properties of bioactive compounds found in tea, as well as to determine the influence of the method and time of infusion preparation on their content in tea infusion.
Herbata jest jednym z najczęściej spożywanych napojów bezalkoholowych na świecie, nie tylko ze względu na swój unikatowy smak i zapach, lecz także właściwości prozdrowotne wynikające z obecności związków bioaktywnych. Głównymi składnikami herbaty, którym przypisuje się korzystne działanie zdrowotne są polifenole. Zawartość związków bioaktywnych w herbacie jest zależna od konkretnego rodzaju herbaty, sposobu jej produkcji oraz metody i czasu parzenia. Celem artykułu jest scharakteryzowanie właściwości prozdrowotnych związków bioaktywnych występujących w herbacie, jak również określenie wpływu sposobu i czasu parzenia na ich zawartość w naparze herbaty.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2020, 2; 131-141
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production stages, microbiological risk and benefits on health of herbal teas
Autorzy:
Akduman, G.
Korkmaz, I.O.
Powiązania:
https://bibliotekanauki.pl/articles/2049211.pdf
Data publikacji:
2020
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
herbal tea
production stage
health
contamination
antioxidant activity
microbiological risk
benefit
herbata ziołowa
zdrowie
zanieczyszczenie
działanie antyoksydacyjne
Opis:
Plants have been used to prepare herbal infusions for centuries. Production of herbal tea consists of several steps, beginning with harvesting, cleaning form residues, drying, storage of herb in a suitable material, grinding, and blending. Te plants grow in different regions and climatic conditions, varying by their physical properties. They are consumed for different purposes and due to their chemical constituents. Many of them have therapeutic effects. Besides their various benefits and even antimicrobial effects, they also carry some microorganisms. Thus, the botanical characteristics and effects on the health of frequently consumed herbal teas and recommendations on their consumption with considered microbial risks are reviewed in this article.
Źródło:
Herba Polonica; 2020, 66, 4; 68-78
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Olejki eteryczne jako substancje aktywne lub konserwanty w kosmetykach
Essential oils as an active ingredients or preservativies in cosmetics
Autorzy:
Adaszyńska, M.
Swarcewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/172463.pdf
Data publikacji:
2012
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
olejki eteryczne
konserwacja alternatywna
konserwacja naturalna
działanie przeciwdrobnoustrojowe
działanie antyoksydacyjne
biopestycydy
essential oils
alternative and natural preservation
antimicrobial activity
antioxidant activity
biopesticides
Opis:
An important trend in current cosmetic industry is increasing demand for new, biologically active compounds and preservatives of natural origin. These products constitute a major ingredients of natural (organic) cosmetics and usually may also be used in typical cosmetics as functional additives. This work summarizes the perspectives of the use of essential oils as active ingredients and preservatives in cosmetic products and as biopesticides. Brief characteristics of essentials oils, their preparation and biological activity is provided. Literature data suggests that essential oils exhibit broad therapeutic effects including antibacterial, antiseptic, antifungal and antioxidant activity, they can be also used as transdermal enhancers. On the other hand, in essential oil have been found compounds which can be use as a biopesticides. The use of essential oils in cosmetic products is possible, but requires a detailed knowledge regarding their compatibility, active concentration as well as toxicological and skin irritant characteristics. The literature review, presented in this paper, shows the great potential of essential oils as a biologically active preservatives and antioxidants, repellents and transepidermal enhancers.
Źródło:
Wiadomości Chemiczne; 2012, 66, 1-2; 139-158
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of different drying processes on an antioxidant potential of three species of the Lamiaceae family
Autorzy:
Kwaśniewska-Karolak, I.
Mostowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/2049315.pdf
Data publikacji:
2021
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
drying process
herb
thyme
Thymus vulgaris
sage
Salvia officinalis
rosemary
Rosmarinus officinalis
antioxidant potential
Lamiaceae
spice plant
ascorbic acid
suszenie
zioła
działanie antyoksydacyjne
kwas askorbinowy
chlorofil
Opis:
Introduction: Spice plants are a rich source of biologically active compounds. Processes of drying, limits the development of microorganisms and biochemical reactions in raw herbs, at the same time modifies their chemical composition. Objective: The aim of this work was to evaluate the effect of drying process of selected plants on their antioxidant potential and the content of biologically active compounds. Methods: The herbal materials thyme herb (Thymus vulgaris L.), sage leaves (Salvia officinalis L.) and rosemary leaves (Rosmarinus officinalis) were dried using two methods: convective (at 30° C), and freeze-drying. In both, fresh and subjected to drying processes herbs, changes in total polyphenol and antioxidant potential (with the DPPH radical), vitamin C (in the form of ascorbic acid) and chlorophyll pigments contents, were studied. Results: The highest content of polyphenols and vitamin C was recorded in rosemary, while sage was characterized by the highest content of chlorophylls. It was found that the drying processes caused large losses of vitamin C (ascorbic acid) and dyes in comparison to the fresh material. The highest losses of vitamin C occurred in convection dried sage (95%), while most was preserved in lyophilised thyme (losses 74%). Drying had also influenced the reduction of the content of chlorophylls with the largest loss of these compounds, at 94% observed in the freeze-dried rosemary. However, the content of polyphenols increased, underscoring a large impact on the antioxidant activity of herbs. Conclusions: Drying processes resulted in the release of phenolic compounds, so their content increased three to four times in the case of rosemary and sage. The largest increase was observed in the case of lyophilised thyme. Simultaneously, the antioxidant potential was significantly increased. Herbal droughts proved to be a rich source of antioxidant compounds with promising applications as a food additive.
Źródło:
Herba Polonica; 2021, 67, 1; 8-17
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Composition, antioxidant and antimicrobial activities of cold-pressed and distilled essential oils of Origanum onites L. and Lavandula officinalis L. relationships evaluated by SEM microscopy
Autorzy:
Erturk, O.
Aydin, G.
Ayvaz, M.C.
Baskan, C.
Powiązania:
https://bibliotekanauki.pl/articles/2049191.pdf
Data publikacji:
2020
Wydawca:
Instytut Włókien Naturalnych i Roślin Zielarskich
Tematy:
Origanum onites
Lavandula angustifolia
essential oil
antioxidant activity
antimicrobial activity
morphological change
scanning electron microscopy
chemical component
gas chromatography-mass spectrometry
oregano
lawenda
olejek eteryczny
działanie antyoksydacyjne
analiza GC-MS
działanie przeciwdrobnoustrojowe
Opis:
Introduction: In order to prevent increased bacterial resistance, it is important to use herbal medicines with less side effects. Objective: In this study, the chemical composition, antimicrobial, antioxidant activities and SEM images of Lavandula officinalis and Origanum onites oils obtained in two different ways were determined. Methods: The antimicrobial activity of the oils was determined against reference and multiple strains of foodborne and pathogenic bacteria. The each essential oil sample were analyzed by GC–MS. Antioxidant activities of the samples were examined through DPPH• and ABTS•+ radical scavenging and FRAP assays. Results: The results indicate that the oils of obtained from Origanum onites and Lavandula officinalis exhibited relatively strong antibacterial and antifungal activity. In addition, the antioxidant activities detected were remarkable. Morphological changes in bacterial cells treated with essential oil samples were demonstrated with SEM images. In addition, the chemical components of the oil samples obtained by both water steam and cold press were revealed by GC-MS analysis and compared. Conclusion: When all the obtained results are evaluated together; these plants could be suitable for using as antimicrobial and antioxidative agents in several industries such as food, cosmetic, etc.
Źródło:
Herba Polonica; 2020, 66, 4; 43-54
0018-0599
Pojawia się w:
Herba Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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