US National Library of Medicine National Institutes of Health

Anticancer Activities of Citrus Peel Polymethoxyflavones Related to Angiogenesis and Others: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4163462/
 
Effect of the peels of two Citrus fruits on endothelium function in adolescents with excess weight: A triple-masked randomized trial: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4652303/
 
Flavonoid composition of orange peel and its association with antioxidant and anti-inflammatory activities: https://www.ncbi.nlm.nih.gov/pubmed/27719891
 
Antimicrobial effects of Citrus sinensis peel extracts against dental caries bacteria: An in vitro study: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4739372/
 

Science Direct

Anti-inflammatory effects of characterized orange peel extracts enriched with bioactive polymethoxyflavones: https://www.sciencedirect.com/science/article/pii/S2213453014000056