Comparison of Important Quality Characteristics of Some Fungal Disease Resistance/Tolerance Grapes Dried with Energy-Saving Heat Pump Dryer

Raisins have been widely consumed for many years all around the world, and different grape cultivars drying techniques are used in their production. Recently, mechanical systems to overcome any undesirable effects that arise from sun-drying with require fewer pesticides minimize risk of residues. Both seeded seedless were preferred past; however, increasingly purposes addition use as table grapes. For first time, an alternative processing method (using energy-saving heat pump dryer) important quality characteristics (total phenolics, antioxidant activity, brix, colour analyses sensory evaluation) disease resistant/tolerant species can be grown humid regions investigated this study. First, fresh fruits nine (Vitis spp.) a ecology analysed, then so too phytochemical raisins dried dryer. The water activity ranged 0.71 (Özer Beyaz?) 0.42 (Kay Gray). total phenolic contents Muscat Bleu (65.96), Philipp (64.88) Campbell Early (64.53 g GAE/100 db) berries highest (p < 0.05). Kishmish Vatkana cultivar had lowest determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay (525.81 mmol TE/100 g) 12.76 13.58 fw. value on dry weight basis was 19.30 Özer Beyaz? found (991.01 using DPPH assay. 7893.51 db, ferric reducing potential (FRAP) assay, which significantly higher than those other cultivars, exception range values provided cupric capacity (CUPRAC) high, (4505.21 mg Trolox/100 fw) results indicated Rhea appreciated more both terms bioactive content scores, these regions, hold great deal growers.