Alkaloids

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2.2.2.3.2.5 Anthocyanidins
Anthocyanidins are plant pigments which give reddish pigmentation of fruits and vegetables. They have a general structure as shown in the right side. Their antioxidant activity helps the body to oxidize of harmful compounds and provide immunity to body. Some of the Anthocyanidins are Cyanidin, Delphidin, Malvidin etc. In Cyanidin R1 and R2 are substituted by OH and H, Delphidin by OH and OH, Malvidin both by OCH3.
Delphidin has shown to be apoptois inducer in cancer cell lines through JNK signaling pathway, which explains their cancer prevention activity by their anti-proliferative action [54. Hou DX et .al 2003 and 55. Yeh CT and Yen GC, 2005]. Delphidin and Cyanidin have accounted to inhibit cyclooxygenase-2 (COX-2) pathway, an important target in inflammation, that stresses the anti-inflammatory effect of these compounds [56. Hou DX et .al 2005]. Refer Table 3 for list of Anthocyanidins present in different plants.
Table 3: List of Different Plenolic acids along with their sub class and spices they are present in.
2.2.2.3.2.6 Isoflavones
Isofla...

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