Effect of UV-C Irradiation on Phenolic Composition of ‘Rishbaba’ Table Grape (Vitis vinifera cv. Rishbaba)

authors

  • Mahdi Mohseniazar Urmia University, Urmia, Iran
  • Mohammd Reza Dilmaghani Urmia Branch, Urmia University, Urmia, Iran
  • Ramin Tagiloo Urmia University, Urmia, Iran
  • Reza Hosseinzadeh Urmia Branch, Urmia University, Urmia, Iran
  • Syavash Hemmaty Urmia Branch, Urmia University, Urmia, Iran
abstract

The effect of postharvest UV-C irradiation on phenolic compounds accumulation was investigated in berries of ‘Rishbaba’ table grape (Vitis vinifera cv. Rishbaba). Grape clusters were harvested at mature stage and irradiated with UV-C using fluorescent germicidal lamp (30 W, 90 cm) with a peak emission at 254 nm for 0 (control), 5 and 10 min. UV-C treatment had significant effect on individual phenolic compounds. Catechin, epicatechin, procyanidin B2, quercetin 3-galactoside, quercetin 3-rhamnoside, chlorogenic acid and total polyphenols increased with UV-C dosage, but procyanidin B1 and cyanidin 3-galactoside decreased. Positive correlation was observed between UV-C treatment and individual phenolics except procyanidin B1 and cyanidin 3-galactoside. In conclusion, UV-C irradiation increased phenolic compounds of ‘Rishbaba’ table grape and its nutritional value.  

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Journal title:

volume 1  issue 2

pages  29- 38

publication date 2632-03-21

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