Fish gelatin: properties, challenges, and prospects as an alternative to mammalian gelatins

Food and pharmaceutical industries all over the world are witnessing an increasing demand for collagen and gelatin. Mammalian gelatins (porcine and bovine), being the most popular and widely used, are subject to major constraints and skepticism among consumers due to socio-cultural and health-related concerns. Fish gelatin (especially from warm-water fish) reportedly possesses similar characteristics to porcine gelatin and may thus be considered as an alternative to mammalian gelatin for use in food products. Production and utilization of fish gelatin not only satisfies the needs of consumers, but also serves as a means to utilize some of the byproducts of the fishing industry. This review focuses on the unique features, advantages, constraints, and challenges involved in the production and utilization of fish gelatin in order to provide a comprehensive look and deeper insight on this important food ingredient, as well as prospects for its future commercial exploitation and directions for future studies.

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