title: Citrus extract or natamycin treatments on "Tzatziki" - a traditional Greek salad.
abstract: The effect of packaging (aerobic and vacuum) either with citrus extract, natamycin individually added, or the combination of two, was studied on the shelf-life of a Greek traditional deli salad "Tzatziki" during storage under refrigeration (4°C). Irrespective of the packaging conditions and treatments, yeasts populations of approximately 4.0-6.5logcfu/g were recorded in the microflora of the salad, whereas the Pseudomonas spp. populations were lower (2-3logcfu/g). Tzatziki's overall flavour was better under vacuum, and of all the treatments examined, the addition of citrus extract, and to a letter extent the combination with natamycin, improved the taste and odour (fruity, pleasant, refreshing with reduced garlic typical flavour) of Tzatziki salad. The shelf-life of Tzatziki was extended by ca. >10days (citrus extract, citrus-natamycin) and 5-6days (natamycin, citrus and citrus-natamycin) under aerobic or vacuum, respectively, as compared to the control sample.
authors.affiliation: Laboratory of Food Chemistry and Food Microbiology, Department of Chemistry, University of Ioannina, GR-45110 Ioannina, Greece.
authors.forename: Maria I
authors.initials: MI
authors.lastname: Tsiraki
authors.forename: Ioannis N
authors.initials: IN
authors.lastname: Savvaidis
mesh_terms: D000890:Anti-Infective Agents / Q000494:pharmacology*; D002957:Citrus / Q000737:chemistry*; D057140:Fast Foods / Q000032:analysis / Q000382:microbiology; D005503:Food Additives / Q000494:pharmacology*; D005506:Food Contamination / Q000032:analysis / Q000517:prevention & control; D018857:Food Packaging; D005519:Food Preservation / Q000379:methods*; D061353:Food Storage; D006801:Humans; D010866:Natamycin / Q000494:pharmacology*; D010936:Plant Extracts / Q000494:pharmacology*; D011549:Pseudomonas / Q000187:drug effects / Q000254:growth & development; D013649:Taste; D014675:Vegetables / Q000737:chemistry* / Q000187:drug effects / Q000382:microbiology; D015003:Yeasts / Q000187:drug effects / Q000254:growth & development
chemical_list: D000890:Anti-Infective Agents; D005503:Food Additives; D010936:Plant Extracts; D010866:Natamycin
keywords: Citrox; Deli salads; Natamycin; Packaging; Shelf-life; Tzatziki