南极磷虾冻藏过程中氟的迁移变化规律

Migration Variation of Fluoride during the Storage of Euphausia superba

为阐明南极磷虾冻藏过程中氟的迁移机制,研究了南极磷虾在-20,-80℃冻藏过程中氟的迁移变化规律。结果表明,冻藏时间和冻藏温度对整虾中的总氟含量影响不显著,冻藏时间对虾壳和虾肉中几种赋存形态氟的含量影响显著,冻藏温度对虾壳和虾肉中几种赋存形态氟的含量影响不显著。在磷虾捕捞后3-10个月的冻藏期间,虾壳和虾肉中氟含量变化差异不显著;在11-15个月的冻藏期间,虾壳中氟含量逐渐降低,虾肉中氟含量逐渐增加,各贮藏时段的氟含量的测定值差异显著。虾壳、虾肉中几种赋存形态氟含量的变化研究表明,随着贮藏时间的延长,虾壳中的可交换态氟含量降低,虾肉中的可交换态氟和水溶态氟含量增加。

Antarctic krill is known as ＂food bank for the world＇s future＂ for its huge resources reserves and rich nutrition. But high fluoride content limits the development and utilization of Antarctic krill. Migration and variation of fluoride content during frozen at-20 ℃ and-80 ℃ was studied. The results showed that temperature and storage time had no effect on various combined forms of fluorine in whole krill. Storage time had a significant effect on various combined forms of fluorine in krill carapace and muscle, while temperature had not. During the period of storage from 3 to 10,difference in fluorine content in krill carapace and muscle was not significant. During the period of storage from 11 to 15 months, fluorine content in krill carapace was gradually reduced, while fluorine content in krill muscle was gradually increased and fluorine content had significant change in krill carapace and muscle during each storage time. According to a research on various combined forms of fluorine, exchangeable fluorine content in krill carapace was reduced, while exchangeable and water soluble fluorine content increased in krill muscle as the extension of time.