21 CFR § 184.1698 - Rue.
---
identifier: "/us/cfr/t21/s184.1698"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 184.1698 - Rue."
title_number: 21
title_name: "Food and Drugs"
section_number: "184.1698"
section_name: "Rue."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "FOOD FOR HUMAN CONSUMPTION"
part_number: "184"
part_name: "DIRECT FOOD SUBSTANCES AFFIRMED AS GENERALLY RECOGNIZED AS SAFE"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321, 342, 348, 371."
regulatory_source: "42 FR 14653, Mar 15, 1977, unless otherwise noted."
cfr_part: "184"
---
# 184.1698 Rue.
(a) Rue is the perennial herb of several species of *Ruta* (*Ruta montana* L., *Ruta graveolens* L., *Ruta bracteosa* L., and *Ruta calepensis* L.). The leaves, buds, and stems from the top of the plant are gathered, dried, and then crushed in preparation for use, or left whole.
(b) The ingredient is used in all categories of food in accordance with § 184.1(b)(2) of this chapter at concentrations not to exceed 2 parts per million.
(c) Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[43 FR 3705, Jan. 27, 1978]