[Code of Federal Regulations]
[Title 21, Volume 3]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 21CFR189.165]
[Page 595-596]
TITLE 21--FOOD AND DRUGS
CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN
SERVICES (CONTINUED)
PART 189_SUBSTANCES PROHIBITED FROM USE IN HUMAN FOOD--Table of Contents
Subpart C_Substances Generally Prohibited From Direct Addition or Use as
Human Food
Sec. 189.165 Nordihydroguaiaretic acid (NDGA).
(a) Nordihydroguaiaretic acid is the chemical 4,4'-(2,3-
dimethyltetrame thylene) dipyrocatechol,
C18H22O4. It occurs naturally in the
resinous exudates of certain plants. The commercial product, which is
synthesized, has been used as an antioxidant in foods.
(b) Food containing any added NDGA is deemed to be adulterated in
violation of the act based upon an order published in the Federal
Register of April 11, 1968 (33 FR 5619).
(c) The analytical method used for detecting NDGA in food is in
section
[[Page 596]]
20.008(b) of the ``Official Methods of Analysis of the AOAC
INTERNATIONAL,'' 13th Ed. (1980), which is incorporated by reference.
Copies may be obtained from the AOAC INTERNATIONAL, 481 North Frederick
Ave., suite 500, Gaithersburg, MD 20877, or may be examined at the
National Archives and Records Administration (NARA). For information on
the availability of this material at NARA, call 202-741-6030, or go to:
http://www.archives.gov/federal--register/code--of--federal--
regulations/ibr--locations.html.
[42 FR 14659, Mar. 15, 1977, as amended at 49 FR 10114, Mar. 19, 1984;
54 FR 24900, June 12, 1989]
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