title: Influence of thermal treatment on black currant (Ribes nigrum L.) juice aroma.
abstract: The influence of thermal treatment on black currant juice aroma was investigated in temperature and time ranges relevant for black currant juice concentration processes, namely, 45, 60, 75, and 90 degrees C. Forty-nine aroma compounds were quantified, and the thermal treatment resulted in concentration increases of most terpenes, aldehydes, furans, and phenols, whereas the concentration of esters slightly decreased. Higher temperatures and longer exposure times had larger effects on the aroma compounds. Odor triangle tests showed no sensory difference between pasteurized juice and juice heated at 60 degrees C, whereas juice heated at 90 degrees C differed significantly from pasteurized juice. It is concluded that a 90 degrees C thermal treatment of black currant juice, which is in the temperature range used for conventional evaporation of black currant juice, has an effect on the aroma and sensory properties.
authors.affiliation: Department of Food Science, Royal Veterinary and Agricultural University, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark.
authors.forename: Camilla
authors.initials: C
authors.lastname: Varming
authors.forename: Mogens L
authors.initials: ML
authors.lastname: Andersen
authors.forename: Leif
authors.initials: L
authors.lastname: Poll
mesh_terms: D001628:Beverages / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D009812:Odorants / Q000032:analysis*; D031965:Ribes / Q000737:chemistry*