Antioxidant capacity and hydrophilic phytochemicals in commercially grown native Australian fruits
Antioxidant capacity and hydrophilic phytochemicals in commercially grown native Australian fruits Journal Article
Food Chemistry
- Author(s): Konczak, I., Zabaras, D., Dunstan, M., Aguas, P.
- Published: 2010
- Volume: 123
- ISBN: 0308-8146
Abstract: Hydrophilic phytochemicals and antioxidant capacities of eight commercially grown native Australian fruits were determined. Kakadu plum (Terminalia ferdinandiana) contained a 6-fold higher level of total phenolic compounds and quandong (Santalum acuminatum) a 1.9-fold higher level of total phenolic compounds (TP, Folin–Ciocalteu assay) than blueberry (Vaccinum sp., cv. Biloxi). Both fruits displayed superior oxygen radical-scavenging capacity (ORAC-H assay) that was, respectively 4.1-fold and 6.5-fold of that of blueberry. The total reducing capacity (TRC; ferric reducing antioxidant power (FRAP) assay) of Kakadu plum and quandong exceeded the TRC of blueberry, respectively, 13.1- and 2.3-times. The primary sources of antioxidant capacities in the evaluated fruits were phenolic acids (benzoic and cinnamic) and flavonoids (flavonols, flavanones and anthocyanins) tentatively detected by liquid chromatography–mass spectrometry (LC–PDA–MS/MS). A high level of vitamin C was recorded for Kakadu plum and Australian citrus fruits. The major organic acids detected were citric and malic acid.
- Urls: http://www.sciencedirect.com/science/article/pii/S0308814610006345
- Work Type: doi: 10.1016/j.foodchem.2010.05.060
- Keywords: Davidsonia pruriens, Syzygium luehmannii, Acronychia acidula, Citrus glauca, Citrus australasica, nutrition, bush food