Tag: By products

The protein content of duck feet can vary dramatically, ranging from approximately 12-15 grams per 100 grams for cooked feet to over 50% for dehydrated versions, making preparation a critical factor. This disparity highlights the importance of understanding the composition of duck feet beyond just total protein, focusing especially on its high collagen content.

Over the past decade, the use of fish gelatin has grown significantly as a sustainable, ethical, and dietary-friendly alternative to traditional gelatin sourced from mammals. Derived primarily from fish processing by-products, fish gelatin is an important ingredient in food, pharmaceuticals, and cosmetics.

Globally, over 70% of fish can be used for collagen production from its by-products, such as the skin, scales, and bones, making it a sustainable alternative to mammalian collagen. Fish collagen is gaining popularity in supplements and cosmetics due to its high bioavailability and eco-conscious sourcing. This guide explores where fish collagen comes from, the types of fish used, and the benefits of using these often-discarded materials.

Globally, over 3.2 million tonnes of tuna processing waste are generated annually, and much of this is repurposed to produce valuable by-products like tuna oil. This means that the omega-3 rich tuna oil found in supplements and enriched foods typically does not come from prime tuna fillets, but rather from the parts of the fish discarded during canning and processing.

While commonly discarded in Western countries, research shows that chicken intestines contain a high percentage of protein, with some studies finding percentages as high as 68% on a dry-weight basis. This leads many to wonder: is chicken intestine a good source of protein for human consumption, and what are the important health considerations?

Approximately 75% of a fish is considered a byproduct during processing, creating a significant waste stream. However, this waste, including skin, scales, and bones, is a rich source of collagen that can be extracted using various scientific methods. This process not only adds value to industrial byproducts but also addresses the growing demand for marine collagen in the cosmetic, food, and biomedical industries.