Antioxidant activity of rosemary extracts in solution and embedded in polymeric systems

被引：5

作者：

Ionita, Petre ^{[1
,2
]}

Dinoiu, Vasile ^{[3
]}

Munteanu, Cornel ^{[1
]}

Turcu, Ioana Maria ^{[1
]}

Tecuceanu, Victorita ^{[3
]}

Zaharescu, Traian ^{[4
]}

Oprea, Eliza ^{[2
]}

Ilie, Cornelia ^{[1
]}

Anghel, Dan ^{[1
]}

Ionita, Gabriela ^{[1
]}

机构：

[1] Romanian Acad, Ilie Murgulescu Inst Phys Chem, Bucharest 060021, Romania

[2] Univ Bucharest, Dept Organ Chem Biochem & Catalysis, Bucharest 050663, Romania

[3] Romanian Acad, Organ Chem Ctr, Bucharest 78100, Romania

[4] INCDIE ICPE CA, Bucharest 030138, Romania

来源：

CHEMICAL PAPERS | 2015年 / 69卷 / 06期

关键词：

plant extract; DPPH; polyethylene; polymeric gels; ROSMARINUS-OFFICINALIS L; PLANT-EXTRACTS; DPPH ASSAY; 2,2-DIPHENYL-1-PICRYLHYDRAZYL; IDENTIFICATION; STABILITY; OXIDATION; PRODUCTS;

D O I：

10.1515/chempap-2015-0024

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rosemary extract was encapsulated in polyethylene or in covalently-based network gels. The covalent gels were obtained by the reaction of isocyanate end-capped polyethylene glycol (PEG) with beta-cyclodextrin or glycerol. The 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay was used to evaluate the antioxidant activity (AA) of rosemary extract entrapped in polymeric structures and in ethanol or water solutions. The AA of the rosemary extract was determined using a DPPH radical for samples prepared in ethanol, and a water-soluble derivative, the sulphonated DPPH radical (DPPH-SO3Na), for the rosemary extract in water. Formulation of the rosemary extract in polymeric gels ensures a rapid release which determines the AA values similar to those in solution. (C) 2014 Institute of Chemistry, Slovak Academy of Sciences

引用

页码：872 / 880

页数：9

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