Abstract: A shark fin analog utilized as a food is produced by heating to dissolve a mixture of gelatin, alginic acid or an alginate or a mannan, and water to form a gelatin sol, spinning the sol through a spinning header onto a rotating roller which has a surface wetted with a coagulation solution of divalent or trivalent metal salt and functions to elongate and tear off pieces of the sol, each piece having the shape of a shark fin with a thin streamlined profile in cross section and washing the pieces with water.

Abstract: A shark fin analog utilized as a food is produced by heating to dissolve a mixture of gelatin, alginic acid or na alginate or a mannan, and water to form a gelatin sol, extruding the sol through a spinneret onto a rotating roller which has a surface wetted with a coagulating solution of divalent or trivalent metal salt and functions to elongate and tear off pieces of the sol, each piece having the shape of a shark fin with a thin streamlined profile in cross section, and washing the pieces with water.

Abstract: A process for processing and treating raw materials such as marine products comprising of fishes, shellfishes, such as Crustacea and mollusks, and seaweeds or mixtures of said material and an optional mixing additive such as soyprotein, wheat flour and starch by means of a twin-screw extruder. The extrudates obtained by the process have qualities and mouthfeel characteristics different from those of the raw material.

Abstract: A fibrous food product is produced by the steps of: adding salt to fish and/or animal meat; kneading the resulting mixture to prepare a paste; and extruding the paste into an aqueous solution of a protein modifier through a nozzle having fine orifices to produce filaments. By varying the conditions of this process, the food filaments of various textures or mouth feeling can be produced. Further, the filaments can be aggregated in a variety of ways to further increase the variety of textures or mouth feeling and to produce various muscle-like fibrous food products.