title: Effect of elicitors on the evolution of grape phenolic compounds during the ripening period.
abstract: BACKGROUND
  The effect of the application of benzothiadiazole (BTH) and methyl jasmonate (MeJ) at veraison on the phenolic composition of grapes from three varieties (Monastrell, Syrah and Merlot) was studied during the ripening period, using HPLC techniques to measure flavonols, anthocyanins and tannins.
  
  
  RESULTS
  The effects of the treatments differed in the three varieties, and the maximum concentration of phenolic compounds was not always reached at the end of the ripening period but some days before harvest. At the end of ripening both treated Syrah grapes only differed from control grapes in the flavonol concentration, whereas MeJ-treated Merlot grapes presented higher anthocyanin and skin tannin contents than the control and BTH-treated grapes. Only the anthocyanin content was significantly higher in treated Monastrell grapes at the moment of harvest.
  
  
  CONCLUSIONS
  The results indicate that the moment of elicitor treatment should be more studied since differences between treated and control grapes were, in general greater several days before harvest in all three varieties. © 2016 Society of Chemical Industry.
authors.affiliation: Food Science and Technology Department, Faculty of Veterinary Science, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain.
authors.forename: Encarna
authors.initials: E
authors.lastname: Gómez-Plaza
authors.affiliation: Food Science and Technology Department, Faculty of Veterinary Science, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain.
authors.forename: Ana B
authors.initials: AB
authors.lastname: Bautista-Ortín
authors.affiliation: Food Science and Technology Department, Faculty of Veterinary Science, University of Murcia, Campus de Espinardo, 30071, Murcia, Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Ruiz-García
authors.affiliation: Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario, Ctra. La Alberca s/n, 30150, Murcia, Spain.
authors.forename: José I
authors.initials: JI
authors.lastname: Fernández-Fernández
authors.affiliation: Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario, Ctra. La Alberca s/n, 30150, Murcia, Spain.
authors.forename: Rocío
authors.initials: R
authors.lastname: Gil-Muñoz
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D000336:Aerosols; D016573:Agrochemicals / Q000494:pharmacology*; D000872:Anthocyanins / Q000032:analysis / Q000096:biosynthesis; D000975:Antioxidants / Q000032:analysis / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D000069599:Crop Production; D018556:Crops, Agricultural / Q000737:chemistry / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D003517:Cyclopentanes / Q000494:pharmacology*; D044948:Flavonols / Q000032:analysis / Q000096:biosynthesis; D005638:Fruit / Q000737:chemistry / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D006801:Humans; D009753:Nutritive Value; D054883:Oxylipins / Q000494:pharmacology*; D010636:Phenols / Q000032:analysis / Q000378:metabolism; D010860:Pigments, Biological / Q000032:analysis / Q000096:biosynthesis; D019441:Plant Epidermis / Q000737:chemistry / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D013030:Spain; D013045:Species Specificity; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet; D013634:Tannins / Q000032:analysis / Q000096:biosynthesis; D013830:Thiadiazoles / Q000494:pharmacology*; D027843:Vitis / Q000737:chemistry / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism
chemical_list: D000085:Acetates; D000336:Aerosols; D016573:Agrochemicals; D000872:Anthocyanins; D000975:Antioxidants; D003517:Cyclopentanes; D044948:Flavonols; D054883:Oxylipins; D010636:Phenols; D010860:Pigments, Biological; D013634:Tannins; D013830:Thiadiazoles; C015700:benzo-1,2,3-thiadiazole; C072239:methyl jasmonate
keywords: Merlot; Monastrell; Syrah; benzothiadiazole; methyl jasmonate; phenolic compounds