Pyrroloquinoline quinone (PQQ) is an antioxidant and redox cofactor that is widely distributed in nature. It is found in plants, fruits, and vegetables. In addition to its antioxidant properties, it has also been identified as a component of several quinoproteins in the human body. These enzymes help protect cells against oxidative stress and support growth.
Pyrroloquinoline quinone is an essential nutrient in many animal species. In animals, it supports the immune system, aids growth, and is associated with mitochondriogenesis. Animals that are deficient in PQQ exhibit abnormal reproductive performance, reduced growth rates, and altered immune function.
The chemical properties of pyrroloquinoline quinone are very similar to riboflavin, hydrazine, and ascorbic acid. This chemical compound is produced by bacteria and is found in soil and in foods. However, it is not classified as a vitamin, as it does not self-oxidize.
Pyrroloquinoline quinone has been associated with aging and neuroprotection. Studies show that it may be able to halt the loss of memory in older people, and it is believed that it may also stimulate the development of nerve growth factor in the brain. As a result, people often take PQQ supplements to maintain healthy cognitive function.
Pyrroloquinoline quinone can be found in various dietary sources, including green peppers, kiwifruit, and parsley. Although it is not classified as a vitamin, it has been evaluated by the European Food Safety Authority’s Panel on Dietetic Products.
PQQ is a highly effective redox cofactor that can catalyze a wide range of continuous redox reactions. It is a remarkably effective antioxidant and has been shown to inhibit the synthesis of amyloid proteins, which are associated with Alzheimer’s disease.