Extraction of biological zinc and taurine from the head and leftover of the prawn
Using the head and leftover of the prawn as raw material, biological active zinc was extracted with ultrasonic and taurine was prepared by cation ion exchange resin as well as elution of distilled water. The technology of extraction of biological zinc and taurine was studied. The extraction amount of biological zinc was determined by atomic absorption spectrophotometry. The structure of taurine product was characterized with infrared spectrum (IR). The experiment results showed that the optimum extraction condition of biological zinc was as follows: ultrasonic wave treatment for 20 min, the ratio of material to water at 1:4, the optimum extraction technology of taurine was: extracting temperature at 100 ℃ for 60 min, and the ratio of material to water at 1:5, and extracting twice.