Search results for "Polyp"
showing 10 items of 1415 documents
Optimisation of Conditions for Extraction of Biologically Active Compounds from Common Bryophytes in Latvia / Latvijâ Augoðu Briofîtu Ekstrakcijas Ap…
2015
Abstract Bryophytes are the second largest taxonomic group in the plant kingdom. They contain a high number of biologically active compounds. Studies of their composition are important for understanding evolutionary processes in the plant kingdom. The aim of this study was to assess bryophyte secondary metabolite extraction options and to increase the yields of polyphenols and substances determining the free radical scavenging activity of bryophyte extracts. Similar studies have been conducted using higher plants as model organisms, but not using bryophytes. Comparison of five extraction methods (conventional, Soxhlet extraction, treatment with microwaves, ultrasound, and supercritical CO2 …
Kombination und Rekombination in der Renaissance
2020
Ein hervorstechendes Merkmal der Musik des 15. und 16. Jahrhunderts ist die Verwendung von praexistenter Musik als Grundlage oder Ausgangspunkt einer neuen Komposition. Solche Werke lassen sich anhand zweier grundsatzlich unterschiedlicher Herangehensweisen unterscheiden, die jeweils eigene kompositionstechnische Probleme nach sich ziehen: Einerseits finden sich Kompositionen, die auf additiven Prozessen und kontrapunktisch anspruchsvollen Strukturen wie Kanons basieren, andererseits solche, in denen eine meist mehrstimmige Vorlage fragmentiert und ihre Bestandteile zu einer neuen Komposition rekombiniert werden. Im vorliegenden Artikel wird diese Unterscheidung ausgehend von Detailanalysen…
Compliance, adherence, concordance, medical recollination - czyli jak poprawić efektywność i bezpieczeństwo leczenia stomatologicznego
2019
Bezpieczeństwo farmakoterapii jest ważne dla wszystkich specjalistów zaangażowanych w proces leczenia chorych. W związku z tym, iż znaczna część pacjentów cierpi z powodu wielu dolegliwości, musi stosować jednocześnie kilka leków. Może to prowadzić do błędów terapeutycznych, które często są przyczyną powikłań i niezamierzonych szkód. Polipragmazja wymusza więc skrupulatne prowadzenie kartoteki pacjenta oraz dokładne zbierania danych klinicznych. Kluczowa w tym procesie jest odpowiednia współpraca lekarza z pacjentem, ponieważ determinuje ona zarówno krótko-, jak i długoterminowe wyniki prowadzonej terapii. Bezpieczne i skuteczne leczenie dentystyczne również wymaga dokładnego wywiadu lekars…
Effect of foliar nutrition on olive oil characteristics in cv 'Nocellara del Belice'
2008
Impact of a Pitanga Leaf Extract to Prevent Lipid Oxidation Processes during Shelf Life of Packaged Pork Burgers: An Untargeted Metabolomic Approach
2020
In this work, the comprehensive metabolomic changes in pork burgers treated with different antioxidants, namely, (a) a control without antioxidants, (b) 200 mg/kg butylated hydroxytoluene (BHT), and (c) 250 mg/kg pitanga leaf extract (PLE, from Eugenia uniflora L.), each one packaged under modified atmosphere (80% O2 and 20% CO2) for 18 days storage at 2 ±
Chemical Composition of Green Pea (Pisum sativum L.) Pods Extracts and Their Potential Exploitation as Ingredients in Nutraceutical Formulations
2021
Agro-industrial wastes contain a large number of important active compounds which can justify their use as innovative ingredients in nutraceutical products. This study aimed to provide a complete analysis of active molecules, namely (poly)phenols in pea pods water-based extracts, through a UHPLC-Q-Orbitrap HRMS methodology. Data showed that 5-caffeoylquinic acid, epicatechin, and hesperidin were the most relevant (poly)phenols found in the assayed extracts, with a mean value of 59.87, 29.46, and 19.94 mg/100 g, respectively. Furthermore, changes in antioxidant capacity and bioaccessibility of total phenolic compounds (TPC) after the simulated gastrointestinal (GI) process were performed usi…
Modular Small Diameter Vascular Grafts with Bioactive Functionalities.
2015
We report the fabrication of a novel type of artificial small diameter blood vessels, termed biomimetic tissue-engineered blood vessels (bTEBV), with a modular composition. They are composed of a hydrogel scaffold consisting of two negatively charged natural polymers, alginate and a modified chitosan, N,O-carboxymethyl chitosan (N,O-CMC). Into this biologically inert scaffold two biofunctionally active biopolymers are embedded, inorganic polyphosphate (polyP) and silica, as well as gelatin which exposes the cell recognition signal, Arg-Gly-Asp (RGD). These materials can be hardened by exposure to Ca(2+) through formation of Ca(2+) bridges between the polyanions, alginate, N,O-CMC, and polyP…
Engineering a morphogenetically active hydrogel for bioprinting of bioartificial tissue derived from human osteoblast-like SaOS-2 cells.
2014
Abstract Sodium alginate hydrogel, stabilized with gelatin, is a suitable, biologically inert matrix that can be used for encapsulating and 3D bioprinting of bone-related SaOS-2 cells. However, the cells, embedded in this matrix, remain in a non-proliferating state. Here we show that addition of an overlay onto the bioprinted alginate/gelatine/SaOS-2 cell scaffold, consisting of agarose and the calcium salt of polyphosphate [polyP·Ca 2+ -complex], resulted in a marked increase in cell proliferation . In the presence of 100 μ m polyP·Ca2+ -complex, the cells proliferate with a generation time of approximately 47–55 h. In addition, the hardness of the alginate/gelatin hydrogel substantially i…
Identification of Abies sibirica L. Polyprenols and Characterisation of Polyprenol-Containing Liposomes
2020
The needles of conifer trees are one of the richest sources of natural polyprenols. Polyprenol homologs from Abies sibirica L. lipophilic 80% purified extract were analyzed and quantified. In total, 10 peaks (Prenol-11 to Prenol-20) were observed in the ultra-high-performance liquid chromatography&ndash
Phytochemical Evaluation of Tinctures and Essential Oil Obtained from Satureja montana Herb
2020
Winter Savory (Satureja montana L.) has been used in traditional medicine and as a spice or natural food preservative in the Mediterranean region for centuries. In this paper, some technological and analytical aspects of the S. montana tinctures development and an evaluation of the essential oil composition are provided. The total phenolic and flavonoid contents and phenolic compounds profile analyzed spectrophotometrically and by high-performance thin-layer chromatography (HPTLC), respectively, were evaluated in the developed tinctures. The results showed that the tinctures prepared from the S. montana herb by maceration or remaceration are rich in polyphenols, and there is an influence of…