Chlorella (genus)

**Chlorella** is a genus of single-celled green algae, classified under division Chlorophyta and family Chlorellaceae[1][4][7]. Cells are typically spherical, 2–10 μm in diameter, and reproduce asexually by autosporulation. Chlorella contains chlorophyll a and b, supporting its photosynthetic capability. It is found primarily in freshwater but also in marine and terrestrial habitats[5][7]. Chlorella has drawn scientific interest for its rapid growth, nutritional content (proteins, B-complex vitamins, minerals, antioxidants), and potential health benefits such as immune support, toxin clearance, lipid modulation, and possible anti-inflammatory effects[3][6]. Species identification within Chlorella relies on molecular barcoding due to morphological similarity and phylogenetic diversity[2][8]. Some strains used in supplements may be misidentified, highlighting taxonomic complexity[7]. Chlorella is primarily consumed as a dietary supplement rather than used therapeutically as a molecular or receptor target, and its risks include allergy, gastrointestinal upset, possible interactions with medications, and uneven regulatory oversight[6]. In summary, Chlorella is not a therapeutic molecular target but rather a genus of green algae used as a nutritional supplement and studied in physiology and health research[1][4][7].

Other names

Green algaeChlorophyta (used generically to indicate the division)sometimes incorrectly as “Chlorella vulgaris” or species names to refer to supplements[2][7]