[Code of Federal Regulations] [Title 21, Volume 3] [Revised as of April 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR172.540] [Page 59-60] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 172--FOOD ADDITIVES PERMITTED FOR DIRECT ADDITION TO FOOD FOR HUMAN CONSUMPTION--Table of Contents Subpart F--Flavoring Agents and Related Substances Sec. 172.540 DL-Alanine. DL-Alanine (a racemic mixture of D- and L-alanine; CAS Reg. No. 302- 72-7) may be safely used as a flavor enhancer for sweeteners in pickling mixtures at a level not to exceed 1 percent of the [[Page 60]] pickling spice that is added to the pickling brine. [56 FR 6968, Feb. 21, 1991]