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Delphanin, also known as Nasunin, is an anthocyanin isolated as purple colored crystals from eggplant peels.

Nasunin, an antioxidant anthocyanin, possesses antiangiogenic activity[1].

[1] Kiminori Matsubara, et al. Antiangiogenic activity of nasunin, an antioxidant anthocyanin, in eggplant peels. J Agric Food Chem. 2005 Aug 10;53(16):6272-5. DOI:10.1021/jf050796r
[2] Wataru Komatsu, et al. Nasunin inhibits the lipopolysaccharide-induced pro-inflammatory mediator production in RAW264 mouse macrophages by suppressing ROS-mediated activation of PI3 K/Akt/NF-κB and p38 signaling pathways. Biosci Biotechnol Biochem. 2017 O DOI:10.1080/09168451.2017.1362973