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Source(s): I eat 'em. Chitterlings / chitlin's are pig intestine and cracklin (or chicarones in Spanish) is fried pig skin with the fat and a bit of the skin on it. You see, there is 100% truth in the saying: You can everything but the oink. Genius Cook Â· 6 years ago.
Chitin, a polysaccharide, is one of the most abundant natural materials in the world. Microorganisms, such as bacteria and fungi secrete chitinases, which over time can break down chitin. These microorganisms also have receptors to the simple sugars that result from this breakdown (decomposition).