crocin

Crocin is a natural carotenoid chemical compound primarily found in the flowers of *Crocus sativus* (saffron) and gardenia. It is responsible for saffron’s distinctive red color and is chemically a diester formed from the disaccharide gentiobiose and the dicarboxylic acid crocetin[4][5]. The term "crocin" can refer to several closely related hydrophilic carotenoids that are mono- or diglycosyl polyene esters of crocetin[2][4]. Crocin exhibits multiple pharmacological activities including antioxidant, anti-inflammatory, anticancer, neuroprotective (notably in models of neurodegenerative diseases such as Parkinson's and Alzheimer's), antidepressant effects, memory improvement properties as well as potential benefits in cardiovascular health by acting as an anti-hypertensive and anti-atherosclerotic agent[2][5]. Mechanistically it acts mainly through radical scavenging activity against superoxide anions and by modulating oxidative stress pathways. In experimental settings it has shown protective effects on brain vasculature, renal tissues, heart tissue and retina[2][5]. Crocin also finds use as a natural food coloring due to its water solubility. Its bioavailability when taken orally is limited until hydrolyzed to trans-crocetin in the intestine[2].

Other names

crocins (for the class of related compounds)trans-crocetin di-(β-D-gentiobiosyl) ester