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undergraduate thesis
Galna kiselina i njeni kompleksi
2023. urn:nbn:hr:182:514126
Lešina, Filip
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry

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Lešina, F. (2023). Galna kiselina i njeni kompleksi (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:514126

Lešina, Filip. "Galna kiselina i njeni kompleksi." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:182:514126

Lešina, Filip. "Galna kiselina i njeni kompleksi." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2023. https://urn.nsk.hr/urn:nbn:hr:182:514126

Lešina, F. (2023). 'Galna kiselina i njeni kompleksi', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 17 April 2024, https://urn.nsk.hr/urn:nbn:hr:182:514126

Lešina F. Galna kiselina i njeni kompleksi [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2023 [cited 2024 April 17] Available at: https://urn.nsk.hr/urn:nbn:hr:182:514126

F. Lešina, "Galna kiselina i njeni kompleksi", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2023. Available at: https://urn.nsk.hr/urn:nbn:hr:182:514126

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Metadata
TitleGalna kiselina i njeni kompleksi
Title (english)Gallic acid and its complexes
AuthorFilip Lešina
MentorMartina Medvidović-Kosanović (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of General, Inorganic and Physical Chemistry and Methodology of Chemistry)
Osijek
Defense date and country2023-09-20, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Physical Chemistry
Abstract
Galna kiselina pripada fenolima, skupini spojeva koji sadrže hidroksilnu skupinu (-OH) direktno vezanu na aromatski benzenski prsten. Galna kiselina u svojoj strukturi sadrži tri hidroksilne skupine, stoga pripada polifenolima. Uz hidroksilne skupine, galna kiselina sadrži i jednu karboksilnu (-COOH) skupinu koja ju dalje svrstava u fenolne kiseline. Antioksidansi su tvari koje imaju sposobnost odgađanja ili inhibiranja oksidacije neke tvari. Galna kiselina ima snažnu antioksidacijsku aktivnost, kao i protuupalno, antimikrobno te potencijalno i antikancerogeno djelovanje. Nalazi se u slobodnom obliku u raznim prehrambenim proizvodima, posebno voću i povrću, a biosintetizira se iz biljaka i gljiva iz šikiminske kiseline. Najznačajnije reakcije galne kiseline su reakcije esterifikacije, oksidacije i dekarboksilacije. Galna kiselina i njeni derivati tvore komplekse s nizom metala u različitim omjerima koristeći kelirajući potencijal hidroksilnih skupina. Galna kiselina sastavna je komponenta željezno-galne tinte, glavne tinte za pisanje i slikanje do 19. stoljeća.
Abstract (english)
Gallic acid belongs to phenols, a group of compounds that contain a hydroxyl group (-OH) directly attached to an aromatic benzene ring. Gallic acid contains three hydroxyl groups in its structure, therefore it belongs to polyphenols. In addition to hydroxyl groups, gallic acid also contains one carboxyl (-COOH) group, which further classifies it as a phenolic acid. Antioxidants are substances that have the ability to delay or inhibit the oxidation of a substance. Gallic acid has strong antioxidant activity, as well as anti-inflammatory, antimicrobial and potentially anti-cancer activity. It is found in free form in various food products, especially fruits and vegetables, and is biosynthesized from plants and fungi from shikimic acid. The most important reactions of gallic acid are reactions of esterification, oxidation and decarboxylation. Gallic acid and its derivatives form complexes with a number of metals in different proportions using the chelation potential of hydroxyl groups. Gallic acid is an integral component of iron-gal ink, the main ink for writing and painting until the 19th century.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:514126
Study programmeTitle: University Undergraduate Study program Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2023-11-09 10:13:58