TIL In the United States over 24 billion eggs are broken per year at egg breaking facilities. Additionally egg membranes are high in collagen and used in dietary supplements.

Read more: https://en.wikipedia.org/wiki/Eggshell_membrane

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  1. The link to one of the sources is out of date so here is an archive, https://web.archive.org/web/20160306101912/http://www.esmingredients.com/about-esm/our-history/

    >“egg-breaking” facilities which is used by food companies to produce many different products like mayonnaise, ice cream, and cakes. One of the major challenges facing egg-breaking facilities is the disposal of the eggshells left over from their process. In the United States alone, more than 2 billion dozen eggs are broken in these plants every year. Before ESM Technologies began working with eggshells, there was not a good solution for their disposal. The only options were to spread it on land as a fertilizer or to dispose of the shells in a dump as waste. Mr. Osborne was a firm believer in making the most of our limited resources which drove him to find a use for the eggshells that his company was producing.

    >From 1993 to 2003, Mr. Osborne worked to find a solution for what to do with all of those eggshells. In his research, he learned that there was a significant amount of collagen in the membrane found just inside the eggshell. (This membrane is that pesky film that gives you so much trouble when you try to peel a hardboiled egg!) Collagen is the main structural protein of the various connective tissues in the human body. As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Mr. Osborne discovered a wide variety of applications for collagen; one of those as an ingredient in the nutrition industry for joint health products, bone health products, and beauty products. He continued his research looking further into collagen as the primary source of the value in eggshells.

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