Method for manufacturing proteoglycan-containing composition, and proteoglycan-containing composition

A method for manufacturing a proteoglycan-containing composition, characterized in comprising:

• a freezing step for freezing a starting material, where raw cartilage that has not had a history of reaching temperature of 30° C. or higher and has not undergone freezing derived from fish is used as the starting material;
• a freeze-drying step for freeze-drying frozen articles obtained in the freezing step;
• and an extraction step for adding an aqueous solvent to freeze-dried articles obtained in the freeze-drying step to carry out extraction.

A method for manufacturing a proteoglycan-containing composition, characterized in comprising:

• a mincing step for forming a starting material into surimi, where raw cartilage that has not had a history of reaching temperature of 30° C. or higher and has not undergone freezing derived from fish is used as the starting material;
• and an extraction step for adding an aqueous solvent to the surimi obtained in the mincing step to carry out extraction.