Changes of the collagen in sea cucumber (Stichopus japonicas) during cooking were investigated. Crude collagen fibers (CCF) is more sensitive to heat than pepsin-solubilized collagen (PSC), absorbance at 226-232 nm increased from 60 to 100°C. PSC nearly completely degraded after cooking for 8-10 h, 4-6 h, 1-1.5 h, 40-50 min, and 10-20 min at 60, 70, 80, 90, and 100°C, respectively. Collagen fiber shrinkage, disappearance of periodic cross striation, complete denaturation, and dispersion of denatured fibers at 40, 60, 80 and 100°C, respectively, were demonstrated by transmission electron microscope (TEM). Above results might be instructional for sea cucumber processing and collagen usage.
- sea cucumber (Stichopus japonicus)
ASJC Scopus subject areas
- Food Science
- Applied Microbiology and Biotechnology