In summary, Chlorella is a single-celled green algae that grows in fresh water.

Chlorella is a member of eukaryotic organism (true nucleus plant), which has been on earth since the pre-Cambrian period over 2 billion years ago. It is not a sexually reproducible plant but a unicellular, freshwater green alga, which divides itself rapidly by four times every 20 to 24 hours. (From the latest gene analysis of Chlorella, it was discovered that that 540 million years ago Chlorella and Chlamydomonas diverged from a common ancestor).

Chlorella is so small (3 to 8 micrometers in diameter) that it was only discovered at the end of the 19th century. At that time, chlorella was named after’chlor’ which means green in Greek and’ella’ which means a small thing in Latin.

There are many species of chlorella, but Chlorella pyrenoidosa was selected by Sun Chlorella Corporation to make the flagship product, Sun Chlorlella^® ‘A’.