Abstract
Although the roe of sea urchins inhabiting the Far Eastern seas possesses many healing properties and may be used as a dietary product, a reduction and deterioration in its nutritional quality during storage occurs. Therefore, in order to make sea urchin products widely accessible to the world population, it is very important to have appropriate technology to keep the roe from spoiling. To store sea urchin roe for a long time, methods of pre-processing sea urchin gonads before freezing were tested. In terms of preserving organoleptic properties and nutritional quality, the most adequate procedure consists of a short period (20 or 30 s) of heat (boiling water) treatment of sea urchin roe after removal from the shell. This procedure results in an inactivation of enzymes that catalyze the hydrolytic processes of lipids and proteins during storage. After blanching and cooling, the roe was packed, frozen and kept at a temperature of −18 °C and −25 °C. The quality of sea urchin roe did not change during storage at the temperature of −18 °C for 6 months, and at the temperature of −25 °C for 10 months.
Highlights
IntroductionPublisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations
To keep sea urchin roe for a long time, three methods of sea urchin gonad pre-processing were tried before freezing
Technology was developed for the long-term storage of frozen sea urchin roe for healthy and dietary meals
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Sea urchins of the Strongylocentrotidae family are widespread seabed animals with a specific round shape of the outer skeleton, which is covered with numerous needles [1]. Stocks of sea urchins in the Far Eastern seas cause intensive fishing, with the recommended capture level being about 8500 tons annually. Measures have been developed in the region to maintain the stability of sea urchin stocks by establishing farms for their breeding
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