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Sensory and volatile analysis of sea urchin roe from different geographical regions in New Zealand
University of Otago, New Zealand.ORCID-id: 0000-0002-2642-283x
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2010 (Engelska)Ingår i: Lebensmittel-Wissenschaft + Technologie, ISSN 0023-6438, E-ISSN 1096-1127, Vol. 43, nr 2, s. 202-213Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Roe from the sea urchin Evechinus chloroticus collected from locations in the North (Mathesons Bay) and South (Doubtful Sound) of New Zealand was characterised according to physical characteristics, sensory properties, and volatile composition. Objective assessment of roe sensory properties (appearance, odour, taste, flavour, texture, and aftertaste) was carried out by a trained sensory panel using descriptive sensory analysis. Proton transfer reaction-mass spectrometry (PTR-MS) was used for headspace analysis of roe, and data were collected over the mass range m/z 22-180. Sea urchins from the Northern population were significantly smaller, and had a lower roe index than those from the Southern population. Roe from Northern sea urchins were rated higher for the attributes of marine, seafood and sharp odour, bitter taste, herbaceous and metallic flavour, astringent texture, and metallic, bitter, and duration of aftertaste than roe from Southern sea urchins, which were rated higher for dairy odour, sweet taste, dairy flavour, moisture content and mouth coating. E. chloroticus roe was also differentiated based on gender by 26 sensory attributes. Volatile analysis significantly discriminated between roe from Northern and Southern sea urchins by 35 mass ions, and between genders of Southern sea urchins by five mass ions.

Ort, förlag, år, upplaga, sidor
2010. Vol. 43, nr 2, s. 202-213
Nyckelord [en]
Descriptive sensory analysis, Proton transfer mass spectrometry (PTR-MS), Roe, Sea urchin, Volatile composition, Headspace analysis, Moisture contents, New zealand, Objective assessment, Physical characteristics, Proton-transfer reaction mass spectrometries, Sensory attributes, Sensory panels, Sensory properties, Sweet taste, Geographical regions, Mass spectrometers, Mass spectrometry, Proton transfer, Textures, Mammals, Echinoidea, Evechinus chloroticus
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Livsmedelsvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-56382DOI: 10.1016/j.lwt.2009.08.008Scopus ID: 2-s2.0-70350565034OAI: oai:DiVA.org:ri-56382DiVA, id: diva2:1592355
Anmärkning

Funding details: Foundation for Research, Science and Technology, FRST; Funding text 1: Funding from the New Zealand Foundation for Research, Science and Technology is gratefully acknowledged. The authors also wish to thank Rowan Keys and the skipper and crew of the San Nicolas for collecting Southern E. chloroticus for us, and Erica Zarate and Angela Little for collecting the Northern sea urchins, Stephanie Then for assistance with the preparation of the sea urchins, and the sensory panellists.

Tillgänglig från: 2021-09-08 Skapad: 2021-09-08 Senast uppdaterad: 2023-05-23Bibliografiskt granskad

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