1 / 28

GENERAL VIEW ON THE ANTIOXIDANT ACTIVITY OF NATURAL EXTRACTES ADDED IN POLYMER MATERIALS

ECOMAT 2008, Bucharest September 25-26. GENERAL VIEW ON THE ANTIOXIDANT ACTIVITY OF NATURAL EXTRACTES ADDED IN POLYMER MATERIALS. Silviu Jipa 1,2 , Traian Zaharescu 1 1 INCDIE ICPE CA, Bucharest 2 “Valahia” University, Targoviste. ECOMAT 2008, Bucharest September 25-26.

borna
Download Presentation

GENERAL VIEW ON THE ANTIOXIDANT ACTIVITY OF NATURAL EXTRACTES ADDED IN POLYMER MATERIALS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ECOMAT 2008, Bucharest September 25-26 GENERAL VIEWON THE ANTIOXIDANT ACTIVITY OF NATURAL EXTRACTES ADDED IN POLYMER MATERIALS Silviu Jipa1,2, Traian Zaharescu1 1 INCDIE ICPE CA, Bucharest 2 “Valahia” University, Targoviste

  2. ECOMAT 2008, Bucharest September 25-26 Antioxidants are the compounds that delay the degradation of substrate in which they are added. The benefit brought about by the antioxidants is the retardation in the chemical modification of the environment where they act as radical protection. There are two main classes of antioxidants: natural antioxidants synthesis compounds The main difference between these materials consists of the level of compatibility with alive systems. The toxic compounds that appear as intermediates from synthetic compounds have pushed the researchers on the way of natural products.

  3. ECOMAT 2008, Bucharest September 25-26 NATURE OFFERS TO MANKIND A LARGE VARIETY OF NATURAL ANTIOXIDANTS FOR SELF – PROTECTION AND FOR PRODUCTION OF FRIENDLY MATERIALS The main antioxidants are represented by phenolic acids (e.g. vanillic, caffeic, chlorogenic, rosmarinic acids), phenolic diterpenes (e.g. carnosol, rosmanol, isorosmanol, carnosic acid) and flavonoids (e.g. naringernin, apigenin, luteolin, diosmin, hispidulin, genkwanin, cirsimaritin).

  4. ECOMAT 2008, Bucharest September 25-26 Polymers that become in the direct contact with people are the package materials that must be full compatible with customers. The areas that may be used the ecological stabilized polymers are medical wear, food industry, pharmaceutics, cosmetics, solar protection of skin

  5. ECOMAT 2008, Bucharest September 25-26 The extraction of antioxidant content from plants represents the main source for ecological protection of polymers with the best consequences on the people life. The diversity of herbs that contain antioxidants in a large extent offers different options for every specific applications, especially in the food industry, where the odor of products plays an important role in the extension of market.

  6. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily

  7. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily

  8. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily Flavonoids belong to the group of natural compounds that contain 15 carbon atoms in their basic nucleus that are arranged in a C6-C3-C6 configuration. It means that the structure consists of two aromatic rings linked by a three-carbon unit, which may or may not be a part of a third ring.

  9. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily • blank; (2) naringenin; (3) hesperitin; (4) epicatechin; • (5) epigallocatechin; (6) morin; (7) quercetin

  10. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily

  11. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily *Antioxidant activity (A) is expressed by the relation

  12. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily

  13. ECOMAT 2008, Bucharest September 25-26 APIACEAEfamily

  14. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  15. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  16. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  17. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  18. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  19. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  20. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  21. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  22. ECOMAT 2008, Bucharest September 25-26 LABIATAEfamily

  23. ECOMAT 2008, Bucharest September 25-26 LEGUMINOSAEfamily

  24. ECOMAT 2008, Bucharest September 25-26 LEGUMINOSAEfamily

  25. ECOMAT 2008, Bucharest September 25-26 ROSACEAEfamily

  26. ECOMAT 2008, Bucharest September 25-26 ROSACEAEfamily

  27. ECOMAT 2008, Bucharest September 25-26 Natural extracts are the most important source for the prevention and the delay of oxidative degradation of organic substrates, especially polymers, which occupy a significant part of our life. The industrial application of natural extracts from plants will generate not only ecological products, but also it is a white check for the preservation of people health. CONCLUSION

  28. ECOMAT 2008, Bucharest September 25-26 Thank you!

More Related