ANFACO-CECOPESCA, Campus Univ. 16, 36310, Vigo, PO, Spain.
IRTA, Programa d'Aigües Marines i Continentals, Ctra. De Poble Nou km 5,5, 43540, Sant Carles de la Rápita, Tarragona, Spain.
Food Chem Toxicol. 2020 Jul;141:111386. doi: 10.1016/j.fct.2020.111386. Epub 2020 May 4.
Paralytic shellfish poisoning (PSP) episodes cause important economic impacts due to closure of shellfish production areas in order to protect human health. These closures, if are frequent and persistent, can seriously affect shellfish producers and the seafood industry, among others. In this study, we have developed an alternative processing method for bivalves with PSP content above the legal limit, which allows reducing toxicity to acceptable levels. A modification of the PSP detoxifying procedure stablished by Decision 96/77/EC of the European Union in Acanthocardia tuberculata, was developed and implemented for PSP elimination in other bivalves species. The procedure was applied to 6 batches of mussels, 2 batches of clams and 2 batches of scallops, achieving detoxification rates of around 85%. A viable industrial protocol which allows the transformation of a product at risk into a safe product was developed. Although a significant reduction was obtained, in a sample circa 9000 μg STX diHCl equiv/kg, the final toxin level in these highly toxic mussels did not fall below the European limit. The processing protocol described may be applied efficiently to mussels, clams and scallops and it may be a major solution to counteract the closure of shellfish harvesting areas, especially if persistent.
麻痹性贝类毒素中毒 (PSP) 事件会对经济造成重大影响，因为需要关闭贝类生产区以保护人类健康。如果这些关闭频繁且持续，可能会严重影响贝类生产者和海鲜行业等。在这项研究中，我们开发了一种处理贝类的替代方法，可将贝类中的 PSP 含量降低到法定限量以下，从而降低毒性至可接受水平。对欧盟第 96/77/EC 号决定中规定的 Acanthocardia tuberculata 的 PSP 解毒程序进行了修改，并应用于其他贝类物种的 PSP 消除。该程序应用于 6 批贻贝、2 批蛤和 2 批扇贝，脱毒率约为 85%。开发了一种可行的工业协议，可以将有风险的产品转化为安全产品。尽管在大约 9000μg STX diHCl equiv/kg 的样本中获得了显著降低，但这些高毒性贻贝的最终毒素水平仍未低于欧盟限量。所描述的处理方案可有效地应用于贻贝、蛤和扇贝，并且可能是应对贝类捕捞区关闭的主要解决方案，特别是如果这种情况持续的话。
