Norwegian University of Science and Technology (NTNU), Department of Biology, NO-7491 Trondheim, Norway.
SINTEF Fisheries and Aquaculture, Department of Marine Resources Technology, NO-7465 Trondheim, Norway.
Food Chem. 2012 May 1;132(1):209-15. doi: 10.1016/j.foodchem.2011.10.058. Epub 2011 Oct 28.
Calanus finmarchicus is a marine zooplankton of interest for the aquaculture industry, as well as for nutraceuticals and the cosmetic industry. The chemical composition of C. finmarchicus rapidly changes postmortem due to autolytic processes; in particular phospholipids rapidly degrade to give free fatty acids. The aim of this study was to inactivate autolytic enzymes in C. finmarchicus by applying heat (72°C, 5-30min) through mixing with boiling, fresh water, and further to explore the effects of heat (70°C, 15min) combined with long time storage (-20°C, 12months) of treated and untreated material. Heat treatment (5min) inactivated all tested enzymes and maintained the initial amount of phospholipids, total lipids and crude protein. Storage of untreated material led to complete degradation of all phospholipids, whereas heat treatment resulted in a stable product containing the initial amount of phospholipids and astaxanthin.
长额拟糠虾是一种海洋浮游动物，不仅对水产养殖业有重要意义，对营养保健品和化妆品行业也同样有重要意义。由于自溶过程，长额拟糠虾死后其化学成分会迅速发生变化；特别是磷脂迅速降解为游离脂肪酸。本研究的目的是通过与沸水混合的方式对长额拟糠虾中的自溶酶进行热处理（72°C，5-30min），以使其失活，然后进一步探讨热处理（70°C，15min）结合处理和未处理材料的长时间储存（-20°C，12 个月）的效果。5min 的热处理可以使所有测试的酶失活，并保持初始磷脂、总脂和粗蛋白的含量。未处理材料的储存会导致所有磷脂完全降解，而热处理则会生成一种含有初始磷脂和虾青素的稳定产品。
