Multi-radical (ORACMR5) antioxidant capacity of selected berries and effects of food processing
| Autor: | Ronald L. Prior, T. Chang, M. Sintara |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Antioxidant medicine.medical_treatment Radical Soil Science Plant Science Berry Horticulture Biochemistry 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology medicine Organic chemistry Food science 030109 nutrition & dietetics Singlet oxygen business.industry Superoxide 04 agricultural and veterinary sciences 040401 food science Antioxidant capacity chemistry Food processing Hydroxyl radical business Agronomy and Crop Science Food Science |
| Zdroj: | Journal of Berry Research. 6:159-173 |
| ISSN: | 1878-5123 1878-5093 |
| DOI: | 10.3233/jbr-160127 |
| Popis: | BACKGROUND: Fruits and berries are known to contain relatively high amounts of antioxidant/bioactive compounds. Several methods have been used for measurement of antioxidant capacity (AC), but not all methods have direct relevance to in vivo antioxidant status. OBJECTIVE: Determine AC in berry/fruit samples, processed berry products, and purified compounds by utilizing 5 different biologically relevant free radical/oxidant sources. METHODS: Samples were assayed for AC capacity using 5 different free radical/oxidant sources: peroxyl radical (ORAC), hydroxyl radical (HORAC), peroxynitrite (NORAC), superoxide anion (SORAC) and singlet oxygen (SOAC)]. Total AC (sum of AC with 5 individual radicals) was expressed as Oxygen Radical Absorption Capacity using Multiple Radicals (ORACMR5). RESULTS: SOAC contributed more than 60% of ORACMR5 in blackberries, sweet and tart cherries; and no detectable levels of SOAC were found in strawberries, black currants and raspberries. Whole fruit purees of mango, wild blueberry and cherry contained 95, 85 and 67% respectively of total ORACMR5 from SOAC. However, freeze dried wild blueberry powder from same production season had only 28% as SOAC and 42 and 22% as ORAC and HORAC. Blueberry/Pomegranate and Mango/Pineapple smoothies had 67% and 77% of ORACMR5 as SOAC. CONCLUSIONS: The antioxidant quenching potential using 5 different radical/oxidant sources of different berries and fruits varied widely and understanding this variation may be helpful in understanding health benefits of different berries and foods. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|