Antioxidant capacity in June-bearing and day-neutral strawberry

Abstract

Khanizadeh, S., Ehsani-Moghaddam, B. and Levasseur, A. 2006. Antioxidant capacity in June-bearing and day-neutral strawberry. Can. J. Plant Sci. 86: 1387-1390. The present study was carried out to estimate the crude, hydrophilic and lipophilic antioxidant content of known and new advanced selections among June-bearing and day-neutral genotypes using Trolox equivalent antioxidant capacity method. Crude, hydrophilic and lipophilic extractions were prepared using 25 g of frozen fruits from each sample. In June-bearing strawberries, significant differences were observed among crude, hydrophilic and lipophilic antioxidant values of different selected genotypes. Mean of crude, hydrophilic and lipophilic antioxidants in June-bearings were estimated to be 20.4, 13.4 and 0.5 µmol TE g -1 FW, respectively, which were higher than those of the day-neutral genotypes (i.e., 13.2, 9.4 and 0.3 µmol TE g -1 FW). The present study revealed the importance of genetic background for determining the antioxidant potential in selected June-bearing genotypes and the possibility of production of new strawberry cultivars with higher levels of antioxidant capacity through breeding programs.

Postharvest Changes in the Total Phenolic Content, Antioxidant Capacity and L-Phenylalanine Ammonia-Lyase Activity of Strawberries Inoculated with Botrytis cinerea

“…The changing trends in the TPC and AC were slightly similar in fruits with or without fungus inoculation during the five-day storage period, indicating that there was a certain correlation between them. These results are in agreement with the work of other researchers (Wang, Cao, & Prior, 1996;Wang & Jiao 2000;Wang & Lin 2000;Kalt et al 2003;Rekika et al 2005;Khanizadeh, Ehsani-Moghaddam, & Levasseur, 2006b). Although PAL is considered to be the key enzyme in phenolic biosynthesis (Hao et al, 1996), we did not find any significant correlation between the PAL activity and the TPC of strawberries with or without fungus inoculation.…”

Agronomic Characteristics and Chemical Composition of Newly Developed Day-Neutral Strawberry Lines by Agriculture and Agri-Food Canada

“…The results obtained were in agreement with work of other researchers. [7,[39][40][41][42][43][44]50] A high and significant correlation was observed between total anthocyanins and total phenolics (r = 0.88, p < 0.0001), while no significant correlation was found between total anthocyanins and TPC, similar to previous reports. [11,45] These results may be due to other un-quantified phenolics or vitamins, synergism among these compounds, major phenolics affecting the expected correlation between phenolics, and antioxidant activities.…”

Horticultural characteristics and chemical composition of advanced raspberry lines from Quebec and Ontario

“…but also to pay particular attention to chemical composition, such as SS, acidity and polyphenol content, which affects fruit quality. Polyphenols and other chemical compositions like superoxide dismutase have a direct effect on plant disease resistance and shelf life and these groups of compounds, especially ellagic acid, could also be used as markers to select for fruit quality, not only due to their potential health-related activity but also to their possible effect on postharvest quality of the fruits , 2008Khanizadeh, Ehsani-Moghaddam, & Levasseur, 2006;Khanizadeh, Tsao, Rekika, Yang, & DeEll, 2007;Wang, Khanizadeh, & Vigneault, 2007). Fruit phenolic compounds have been studied extensively and in addition to their important functions in plant defense mechanisms and external stresses (Di Venere et al, 1998;Feucht, Treutter, & Christ, 1992;Mayr, Treutter, Santos-Buelga, Bauer, & Feucht, 1995;Wang, Cao, & Prior, 1996), they also affect the quality, color and taste of fruit along with SS and acidity (Bushway, Hu, & Shupp, 2002;Robards, Prenzler, Tucker, Swatsitang, & Glover, 1999;Van der Sluis, Dekker, Skrede, & Jongen, 2002).…”