Naslov
Seasonal variations in chemical composition and fatty acid profile of European abalone (Haliotis tuberculata) from Northern Adriatic

Autori
Krbavčić Jambrošić, Martina ; Tomljanović, Tea ; Obradović, Željana ; Janči, Tibor ; Topić Popović, Natalija

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Conference of the West European Fish Technologists' Association (WEFTA) : Book of Abstracts / - , 2022, 130-130

Skup
Conference of the West European Fish Technologists' Association (WEFTA)

Mjesto i datum
Rotterdam, Nizozemska, 17.10.2022. - 21.10.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Haliotis tuberculata ; Seasonal variations

Sažetak
European abalone is herbivorous gastropod mollusc from Haliotidae family, native to the the north east Atlantic and Mediterranean, but also abundant in the Adriatic. Traditionally, abalone is highly valued as a gastronomic delicacy on Asian market, with a growing appeal on the European market. Despite a high market interest and expansion of farms in Europe, scientific data on production technology and nutritional value of European abalone is limited. The aim of this work was to determine chemical composition and fatty acid (FA) profile of European abalone harvested in Northern Adriatic during four seasons. Results showed minor variations in crude protein and fat content in range of 17.25 – 18.52 g/100 g and 1.48 – 1.65 g/100 g respectively, during fall, winter and spring, while in summer values were significantly lower, i.e. 13.23 g/100 g of protein and 1.15 g/100 g of fat. Most abundant FA was palmitic acid with content in range 18.05 – 24.71 % of total FA. Other major FA include eicosapentaenoic acid (9.50 – 16.56 %), docosapentaenoic acid (8.16 – 9.75 %) and oleic acid (4.25 – 9.06 %). The proportions of total SFA and MUFA showed large seasonal variations with similar content in spring (36.93 % SFA, 19.52 % MUFA) and fall (36.89 % SFA, 18.18 % MUFA), the highest in summer (40.87 % SFA, 21.77 % MUFA) and the lowest in winter (33.10 % SFA, 16.15 % MUFA). The proportions of total PUFA were the highest in winter (46.13%) and the lowest in summer (33.61%). The minimal protein and fat content in summer is correlated with the reproductive status, i.e. end of the spawning period, while accumulation of PUFA during the winter period is due to adaptation of membrane lipids to low temperatures, in accordance with previous studies. Observed variations significantly influence nutritive value of European abalone during different seasons.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Biotehnologija u biomedicini (prirodno područje, biomedicina i zdravstvo, biotehničko područje)

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