[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR439.21] [Page 402] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 439_PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY --Table of Contents Subpart B_Extraction Products Sec. 439.21 Special definitions. For the purpose of this subpart: (a) Extraction means process operations that derive pharmaceutically active ingredients from natural sources such as plant roots and leaves, animal glands, and parasitic fungi by chemical and physical extraction. (b) Product means any substance manufactured by an extraction process, including blood fractions, vaccines, serums, animal bile derivatives, endocrine products and medicinal products such as alkaloids that are isolated from botanical drugs and herbs. [68 FR 12272, Mar. 13, 2003]