title: Combinations of High Intensity Light Pulses and Thermosonication for the inactivation of Escherichia coli in orange juice.
abstract: The non-thermal technologies High Intensity Light Pulses (HILP) and Thermosonication (TS) were applied alone and in combination to study their effect on Escherichia coli inactivation in orange juice. Two different energy settings were chosen in the current study, 'Low' (L) and 'High' (H), being the combinations applied: HILP(L) (4.03 J/cm(2)), HILP(H) (5.1 J/cm(2)), TS(L) (2.8 min residence time at 40 °C) and TS(H) (5 min residence time at 50 °C). Both the individual technologies and their combinations (HILP&TS and TS&HILP) were studied. Results showed inactivation ranging from 1.10 (TS(H)) to 2.42 (HILP(H)) log cfu/ml for the hurdles when applied individually and from 2.5 (HILP(L)&TS(H)) to 3.93 (HILP(H)&TS(L)) log cfu/ml for the combined treatments. Similar reductions in E. coli populations were achieved in orange juice by all treatment combinations irrespective of the sequence in which they were applied.
authors.affiliation: Agriculture and Food Science Centre, School of Agriculture, Food Science and Veterinary Medicine, College of Life Sciences, UCD Dublin, Belfield, Dublin 4, Ireland. arantxa.munoz@hotmail.es
authors.forename: A
authors.initials: A
authors.lastname: Muñoz
authors.forename: I
authors.initials: I
authors.lastname: Palgan
authors.forename: F
authors.initials: F
authors.lastname: Noci
authors.forename: D J
authors.initials: DJ
authors.lastname: Morgan
authors.forename: D A
authors.initials: DA
authors.lastname: Cronin
authors.forename: P
authors.initials: P
authors.lastname: Whyte
authors.forename: J G
authors.initials: JG
authors.lastname: Lyng
mesh_terms: D001628:Beverages / Q000382:microbiology*; D002957:Citrus / Q000382:microbiology*; D004926:Escherichia coli / Q000254:growth & development / Q000528:radiation effects*; D005519:Food Preservation / Q000379:methods*; D006358:Hot Temperature; D008027:Light; D050296:Microbial Viability / Q000528:radiation effects*; D013010:Sonication / Q000379:methods*