The nacreous layer of shells and pearls is composed of aragonite crystals arranged in an organic matrix. The organic matrix contains chitin and several proteins that regulate the formation of the nacreous layer. Owing to their strong interactions in the organic matrix. the current method for extraction of insoluble proteins from the pre-powdered nacreous layer involves heating to high... https://parisnaturalfoodes.shop/product-category/assault-fruit-punch/