title: Effects of gamma irradiation on the distribution of calcium ions in grass shrimp (Phenaeus monodon F.) muscle.
abstract: Effects of medium-dose (5 kGy) irradiation on the calcium ion distribution in shrimp muscle were studied using an electron microprobe (EDX) and an electron microscope. In irradiated shrimp muscle cells, the calcium ions in the sarcoplasmic reticulum and nuclei were not released to the myofibrils, and remained in situ during 8 days storage at 4°C after irradiation. However, without irradiation the concentration of calcium ions in the myofibrils of muscle cells increased after the same storage period. The distribution of calcium ions could play a role in the softening of shrimp meat, induced by proteinase.
authors: Food Industry Research and Development Institute, PO Box 246, Hsinchu, Taiwan.
authors: J S
authors: JS
authors: Yang
authors: F S
authors: FS
authors: Perng