Carrier proteins delivering nutrients have all the size to penetrate through the stomach lining. These days majority of the drugs are delivered directly to the receptor sites with the aid of carrier proteins. If the protein had to break down in the stomach then these drug companies would have increased their production cost without any benefit. Another simple explanation of the stability of the proteins is related to the food poisoning. Food poisoning is due to existence of a protein with wrong code. These proteins cause the poisoning. If the protein had to break down in the stomach then there should have been no food poisoning. The reason for effectiveness of Food State nutrients is their capability to deliver the nutrient to the active receptor site. This transportation is only available in presence of a carrier food factor or food proteins.

Amino acid chelates are loosely bounded amino acids and minerals. All the amino acid chelates are sensitive towards acidic medium and they immediately breakdown. There is no single amino acid chelate that can tolerate acidic condition. To the best of my knowledge there is no single amino acid chelate in our natural food, vegetable, or plant. If the amino acid chelates are not present in any natural food, then, how they can be labeled as natural. Nature does not create amino acid chelates and no food contains it. Therefore, there is no natural amino acid chelate.