Antioksidativni kapacitet i udio polifenola kestenovog meda (CROSBI ID 355501)
Ocjenski rad | diplomski rad
Podaci o odgovornosti
Berlančić, Tanja
Primorac, Ljiljana
Flanjak, Ivana
hrvatski
Antioksidativni kapacitet i udio polifenola kestenovog meda
Zadatak ovog rada bio je odrediti antioksidativni kapacitet i udio ukupnih polifenola kestenovog meda (Castanea sativa Miller). Analizirano je 15 uzoraka, sakupljenih od pčelara s područja Hrvatske. Udio ukupnih polifenola određen je modificiranom Folin-Ciocalteu metodom, a antioksidativni kapacitet s dvije metode: FRAP (Ferric Reducing Antioxidant Power) i DPPH (1, 1-difenil-2-pikril-hidrazil) metodom. Sadržaj ukupnih polifenola kretao se od 129, 1 do 212, 6 mg galne kiseline/kg meda, antioksidativni kapacitet, određen FRAP metodom, od 216, 7 do 354, 3 µ M Fe(II), te DPPH metodom, izražen kao IC50, od 11, 34 do 21, 36 mg/ml. Između ukupnih polifenola i antioksidativnog kapaciteta određenog FRAP metodom nađena je visoka pozitivna korelacija (r=0, 954, p<0, 05), kao i sa DPPH vrijednostima izraženim kao 1/IC50 (r=0, 899, p<0, 05).
kestenov med; antioksidativni kapacitet; udio ukupnih polifenola
nije evidentirano
engleski
Antioxidant capacity and total polyphenolic content in chestnut honey
The aim of this work was to determine antioxidant capacity and total polyphenolic content in chestnut honey (Castanea sativa Miller). 15 samples, originating from Croatia, were collected from beekeepers. The total polyphenolic content was determined by modifed Folin-Ciocalteu method, while for determination of the antioxidant capacity two methods were used: FRAP (Ferric Reducing Antioxidant Power) and DPPH (1,1-diphenyl-2-picrylhydrazyl) method. The total polyphenolic content ranged from 129,1 to 212,6 mg gallic acid/kg honey, the antioxidant capacity, determined by FRAP method, from 216,7 do 354,3 μM Fe(II), and by DPPH method, expressed as IC50, from 11,34 to 21,36 mg/ml. Between total polyphenolic content and antioxidant capacity determined by FRAP method high positive correlation was found (r = 0,954, p < 0,05), as well as with DPPH values expressed as IC50 (r = 0,899, p < 0,05).
chestnut honey; antioxidant capacity; total polyphenolic content
nije evidentirano
Podaci o izdanju
45
17.07.2009.
obranjeno
109:070647
Podaci o ustanovi koja je dodijelila akademski stupanj
Prehrambeno-tehnološki fakultet Osijek
Osijek
