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undergraduate thesis
Antioksidansi i njihov doprinos zdravlju i ljepoti kože
2017. urn:nbn:hr:182:147121
Bošnjaković, Anja
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Bošnjaković, A. (2017). Antioksidansi i njihov doprinos zdravlju i ljepoti kože (Undergraduate thesis). Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry. Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:147121

Bošnjaković, Anja. "Antioksidansi i njihov doprinos zdravlju i ljepoti kože." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2017. https://urn.nsk.hr/urn:nbn:hr:182:147121

Bošnjaković, Anja. "Antioksidansi i njihov doprinos zdravlju i ljepoti kože." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2017. https://urn.nsk.hr/urn:nbn:hr:182:147121

Bošnjaković, A. (2017). 'Antioksidansi i njihov doprinos zdravlju i ljepoti kože', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 10 December 2024, https://urn.nsk.hr/urn:nbn:hr:182:147121

Bošnjaković A. Antioksidansi i njihov doprinos zdravlju i ljepoti kože [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2017 [cited 2024 December 10] Available at: https://urn.nsk.hr/urn:nbn:hr:182:147121

A. Bošnjaković, "Antioksidansi i njihov doprinos zdravlju i ljepoti kože", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:182:147121

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Metadata
TitleAntioksidansi i njihov doprinos zdravlju i ljepoti kože
Title (english)Antioxidants and their contribution to the health and beauty of the skin
AuthorAnja Bošnjaković
MentorKatarina Mišković Špoljarić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2017-09-21, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Abstract
Slobodni radikal je svaki atom ili skupina koja ima jedan nespareni elektron ili više njih u vanjskoj ljusci. Reaktivne kisikove vrste su vrlo male molekule ili ioni u koje ubrajamo ione kisika, slobodne radikale anorganske ili organske perokside (ROS). Kako bi izbjegli navedene izvore ROS-a pravilo je da uravnotežimo svoju prehranu koja vodi k zdravijem životu te da povećamo svoju tjelesnu aktivnost. Oksidacijski stres posljedica je prevelikog stvaranja reaktivnih spojeva kisika (oksidansi, radikali) uslijed poremećaja u ravnoteži oksidacijsko – redukcijskih procesa u biološkim organizmima. Odnosno, oksidansi u biološkim organizmima sposobni su otpuštati elektrone, dok su antioksidansi sposobni primati elektrone. Budući da je naš organizam izložen raznovrsnim izvorima oksidacijskog stresa, natjeran je da se zaštiti. Evolucijski su se razvili zaštitni mehanizmi antioksidativne obrane. Antioksidansi su prirodne ili sintetske tvari koje uspješno blokiraju slobodne radikale u njihovom štetnom djelovanju na organizam. Antioksidansi se moraju stalno regenerirati u tijelu, kako bi se uspostavila ravnoteža između njih i slobodnih radikala u tijelu. Čovječji antioksidativni obrambeni sustav sastavljen je od antioksidativnih enzima i neenzimskih antioksidansa. Ključni enzimski antioksidansi koji sudjeluju pri neutralizaciji ROS-a su: superoksid dismutaza, katalaza, glutation peroksidaza, glutation reduktaza.U neenzimske antioksidanse ubrajamo metaboličke antioksidanse i antioksidanse iz hrane. Metabolički antioksidansi (glutation, koenzim Q, lipoična kiselina) su produkti metaboličkih reakcija u tijelu. S druge strane, antioksidansi iz hrane su spojevi koje se ne proizvode u organizmu pa ih stoga moramo unositi putem raznovrsne prehrane. Tu ubrajamo vitamin A, vitamin C, vitamin E, minerali selen i cink, te resveratrol. Svi antioksidansi iz hrane su se pokazali vrlo uspješnim u detoksifikaciji organizma od ROS-a. Uloga antioksidansa u kozmetičkim proizvodima je dvostruka. Sprječavaju nastanak oksidativnog stresa kože koji uzrokuje oštećenje stanica i prijevremeno starenje kože te čuvaju stabilnost kozmetičkih preparata.
Abstract (english)
Free radical is any atom or group having one unpaired electron or more of the outer shell. Reactive oxygen types are very small molecules or ions containing oxygen ions, free radicals of inorganic or organic peroxides (ROS). To avoid these sources of ROS rule is to balance your diet that leads to a healthier life and to increase their physical activity. Oxidation stress is the consequence of the excessive formation of reactive oxygen compounds (oxidants, radicals) due to disorders in the balance of oxidation - reduction processes in biological organisms. In other words, oxidants in biological organisms capable of releasing electrons, while antioxidants are able to receive electrons. Since our organism is exposed to various sources of oxidative stress, it has been made to protect it. Antioxidant defence mechanisms have evolved evolutionally. Antioxidants are natural or synthetic substances which successfully block free radicals in their harmful effects to the organism. Antioxidants must be constantly regenerated in the body to balance the free radicals in the body. The human antioxidant defense system is made up of antioxidant enzymes and non-enzymatic antioxidants. The key enzyme antioxidants involved in ROS neutralization are: superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase. Non-enzymatic antioxidants include metabolic antioxidants and antioxidants from food. Metabolic antioxidants (glutathione, coenzyme Q, lipoic acid ) are products of metabolic reaction in our body. On the other hand, antioxidants from food are compounds that are not produced in the body, so we have to enter them through a variety of diets. These include vitamin A, vitamin C, vitamin E, selenium and zinc minerals, and resveratrol. All antioxidants from food proved to be very successful in the detoxification of the body of ROS. The role of antioxidants in cosmetic products is twofold. Prevent the formation of skin oxidative stress that causes cell damage and premature aging of the skin and keep the stability of preparations.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:147121
Study programmeTitle: 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 on2018-01-10 12:07:39