Radiation Preservation of Fishery Products. II. Application of Radiation Preservation to Cure Shrimp, Common Squid and Little Squid

  • Sang Choe (Marine Products Lab., Korea Institute of Science and Technology) ;
  • Chung, Tai-Wha (Marine Products Lab., Korea Institute of Science and Technology) ;
  • Kwak, Hi-Sang (Marine Products Lab., Korea Institute of Science and Technology)
  • Published : 1969.09.01

Abstract

Whole cure shrimp, eviscerated common squid and little squid meats were irradiated with gamma radiation from 60Co using varying dose up to one Mrad. Changes in quality were assessed by organoleptic, chemical (VRS and TMA-N), biochemical (hypoxanthine) and microbiological tests; and the effect of radiation on prolonging of the storage life at 2-4 C was studied. With the cure shrimp, 0.12-0.20 Mrad appears to be optimal with 8 days of storage life, whereas the unirradiated control samples had a storage life of 3 days. With the common squid meat, 0.20-0.30 Mrad appears to be optimal with 14-21 days of storage life, where-as the unirradiated control samples had a storage life of 8 days. And for the little squid meat, 0.12-0.20 Mrad appears to be optimal with 10 days of storage, where-as the unirradiated control samples had a storage life of 5 to 6 days.

젓새우(Acetes chinensis), 피둥어꼴뚜기 (Todarodes Pacifcus, 속칭 동해안산의 오징어), 젓꼴뚜기 (Loligo beka)를 1 Mrad까지의 각 성량의 ${\gamma}$선을 조사하여 이것들을 2~4$^{\circ}C$에서 저장하여 방사선에 의한 저장효과를 시험하였다. 원료와 저장중의 어체선도는 관능검사, 화학적 검사 (VRS, TMA-N량), 생화학적검사 (Hypo-xanthine 량) 및 세균학적검사 (생균수)에 의거하여 판정하였다. VRS 값은 3어종에 있어서 모두 관능검사치와 잘 부합되지는 않으나 TMA-N, Hypoxanthine 식 및 생균수는 관능검사치와 잘 부합되며, 각 어종의 선도판정치로서 이용할수 있다. 비조사 젓새우는 3일간의 저장이 가능하나 최적선량 0.12-0.20 Mrad에서 8일간까지 저장할 수 있고, 피둥어꼴뚜기는 8일간의 저장을 최적선량 0.20-0.30 Mrad 에서 14-21일간의 저장이 가능하였으며, 젓꼴뚜기는 5-6일의 저장기간이 최적선량 0.12-0.20 Mrad에서 약 10일간의 저장이 가능하였다.

Keywords