Evaluation of biochemical components and antioxidant capacity of different kiwifruit (Actinidia spp.) genotypes grown in China
2018
ABSTRACTKiwifruit from eight Actinidia genotypes were evaluated for soluble sugar content (SSC), titratable acidity content (TAC), sugar–acid ratio (SAR), vitamin C (Vc) content, superoxide dismutase (SOD) activity, total phenolic content (TPC), total flavonoid content (TFC) and antioxidant capacity using four assays: 2,2ʹ-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical-scavenging assay; 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay; oxygen radical absorbance capacity (ORAC) and ferric reducing antioxidant power (FRAP) assay. These analyses demonstrated that ‘AnminR1’ and ‘AnminR2’ of Actinidia arguta have significantly higher SSC, TAC and SAR than other Actinidia genotypes, indicating better flavour. The analyses also demonstrated that the antioxidant capacity of Actinidia kolomikta and A. arguta fruits was significantly higher than that of other genotypes (Actinidia chinenesis and Actinidia deliciosa), which was approximately 2.37–5.51 fold higher than A. deliciosa cv. ...
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