PQQ (pyrroloquinoline quinone) has rich functions and industry development opportunities and challenges.

PQQ, pyrroloquinoline quinone, is an oxidoreductase prosthetic group with the molecular formula C14H6N2O8. It is the third prosthetic group found in membrane-bound bacterial dehydrogenases after flavin nucleotides and nicotinamide nucleotides. . PQQ is widely found in soil, microorganisms, plants and animal tissues, including breast milk, green peppers, kiwi fruit, tea, papaya, spinach, celery, soybeans, broccoli,…