Expressed bitter orange essential oil from Brazil.  Bitter orange is also know as sour orange and Seville orange.

Species:  Citrus aurantium L.,  Sub-species:  amara Engl., (C. bigaradia Risso).  Family:  Rutaceae.

Aromatherapy uses bitter orange to provide an aroma that stimulates and awakens.  The aroma is reminisent of orange juice.

Here are articles:  Bitter Orange Herb Benefits, and, Health Benefits of Orange Essential Oil.