This paper is dedicated to gathering information about utilization of Vitis vinifera L. extracts, mainly grape seed extract (GSE), production of GSE in two variants (aqueous or methanol GSE) and description of its characteristics. Extract was rich in polyphenols (13462 mg/l GAE), measured by Folin-Ciocaltel method. Also 3615 mg/l GAE of flavonols was present in GSE. Antioxidant activity measured by DPPH method was high, 7978 mg/l GAE. Disc diffusion method was used for antimicrobial activity analysis. GSE's effect was tested on five common microorganisms. Results of the experiment show that GSE strongly inhibits growth of Bacillus cereus, Candida tropicalis and Enterococcus faecalis. However, it was not effective against Escherichia coli and Pseudomonas aeruginosa.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:424759 |
| Date | January 2017 |
| Creators | Koláčková, Ivana |
| Source Sets | Czech ETDs |
| Language | Slovak |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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