title: Preharvest ultraviolet-C irradiation: Influence on physicochemical parameters associated with strawberry fruit quality.
abstract: Postharvest ultraviolet-C (UV-C) hormesis has been shown effective for the treatment of the edible part of several horticultural crops such as strawberry fruit; however, there is a lack of information on its potential preharvest impact. In the present study three strawberry cultivars (Fragaria × ananassa Duch. 'Albion', 'Charlotte' and 'Seascape') were exposed to UV-C during two growth seasons for a period of three weeks. Treatment begins when the first flowers were wide open and fruits at commercial maturity were harvested within one week after UV treatment. The physicochemical quality parameters of the fruits harvested from the treated plants were compared to those of the fruits of the untreated control plants. Preharvest UV-C treatment tended to increase fruit firmness in all cultivars with significant differences declared only for 'Albion' and 'Seascape' in season 2. Fruits from treated plants were generally redder but a significant difference was observed only for cultivar 'Charlotte' in the second growing season. Other color attributes were not affected by UV-C, neither were organic acids, simple sugars, soluble solids content (SSC), titratable acidity (TA) and pH, although in most cases slight decreases were noticed. Cultivar and growing season were the factors that mostly influenced on the parameters under study. The present study show that cumulative preharvest UV-C treatment of 3.6 kJ m-2did not adversely affected important strawberry quality parameters.
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China; Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, 430 Boulevard Gouin, QC J3B 3E6, Canada.
authors: Zhichun
authors: Z
authors: Xie
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China. Electronic address: fanjinshuan@163.com.
authors: Jinshuan
authors: J
authors: Fan
authors: Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, 430 Boulevard Gouin, QC J3B 3E6, Canada. Electronic address: marietherese.charles@agr.gc.ca.
authors: Marie Thérèse
authors: MT
authors: Charles
authors: Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, 430 Boulevard Gouin, QC J3B 3E6, Canada.
authors: Denis
authors: D
authors: Charlebois
authors: Eastern Cereal and Oilseed Research Centre, Agriculture and Agri-Food Canada, Ottawa, 960 Carling Avenue, ON K1A 0C6, Canada.
authors: Shahrokh
authors: S
authors: Khanizadeh
authors: Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, 430 Boulevard Gouin, QC J3B 3E6, Canada.
authors: Daniel
authors: D
authors: Rolland
authors: Horticulture Research and Development Centre, Agriculture and Agri-Food Canada, Saint-Jean-sur-Richelieu, 430 Boulevard Gouin, QC J3B 3E6, Canada.
authors: Dominique
authors: D
authors: Roussel
authors: College of Biology & Agro-forestry Engineering, Tongren University, Tongren, Guizhou 554300, China.
authors: Zhimin
authors: Z
authors: Zhang
mesh_terms: D001205:Ascorbic Acid / Q000032:analysis; D019343:Citric Acid / Q000032:analysis; D003116:Color; D063427:Food Quality; D031985:Fragaria / Q000737:chemistry* / Q000528:radiation effects*; D005638:Fruit / Q000737:chemistry* / Q000528:radiation effects*; D008293:Malates / Q000032:analysis; D009005:Monosaccharides / Q000032:analysis; D014466:Ultraviolet Rays
chemical_list: D008293:Malates; D009005:Monosaccharides; D019343:Citric Acid; C030298:malic acid; D001205:Ascorbic Acid
keywords: Acid; Color; Firmness; Fragaria × ananassa Duch.; Sugar; UV-C hormesis