Key takeaways
- Cordyceps militaris contains nucleosides, including cordycepin and adenosine.
- It also contains polysaccharides, sterols and orange carotenoid pigments.
- Its chemistry differs from O. sinensis and fermented mycelium.
- A dual extract captures both water- and alcohol-soluble compounds.
Cordyceps militaris has a distinctive chemistry that sets it apart from other functional mushrooms, and from the Himalayan caterpillar fungus it is often confused with. This article introduces its main compounds, explains why species matters so much, and shows how each group behaves during extraction.
A quick overview
- Nucleosides, especially cordycepin and adenosine: water-soluble.
- Polysaccharides, including beta-glucans: water-soluble when heated.
- Sterols, mainly ergosterol: alcohol-soluble.
- Carotenoids, which give the orange colour: alcohol- and fat-soluble.
- D-mannitol, amino acids and minerals.
Nucleosides
Nucleosides are the building blocks of DNA and RNA. C. militaris contains several, most notably cordycepin and adenosine. Cordycepin is its signature compound, first isolated from C. militaris in 1950. The fungus also makes pentostatin, which protects cordycepin from being broken down. See Cordycepin Explained.
Polysaccharides
Like other fungi, Cordyceps contains cell-wall polysaccharides, including beta-glucans, extracted mainly by hot water. See What Are Beta-Glucans?
Sterols
Cordyceps contains sterols, including ergosterol, which dissolve better in alcohol. See Fungal Sterols Explained.
Carotenoids
The bright orange colour of C. militaris fruiting bodies comes from carotenoid pigments, the same broad family that colours carrots, tomatoes and autumn leaves. Growers know that light affects colour: fruiting bodies grown with adequate light develop a deeper orange. The pigments are oily in character and dissolve in alcohol rather than water.
D-mannitol
Cordyceps contains D-mannitol, a sugar alcohol also found in many plants and seaweeds. In older literature it was sometimes called “cordycepic acid”, a name that stuck in marketing long after chemists showed it was simply mannitol. If you see cordycepic acid on a label, that is what it means.
Amino acids and minerals
Cordyceps also contains protein, free amino acids and minerals, as most mushrooms do.
Species matters
The chemistry of C. militaris differs from that of Ophiocordyceps sinensis, which is generally reported to contain little or no cordycepin, and from fermented mycelium products such as Cs-4, which have their own distinct profiles. Research on one can’t be applied to another. See Cordyceps militaris vs Ophiocordyceps sinensis.
Fruiting body versus substrate
Cultivated C. militaris is grown on a grain-based substrate. Some products use only the harvested fruiting bodies; others include the spent substrate or mycelium grown on grain, which changes the chemistry and adds starch. Products should state which they use. See How Cultivated Cordyceps Is Grown.
In an extract
Nucleosides, polysaccharides and mannitol are water-soluble; sterols and carotenoids dissolve better in alcohol. A dual extract captures both groups. See How Cordyceps Extracts Are Made.