Oils, orris

Orris butter, or orris concrete, is obtained by steam distillation of dried ground rhizomes with yields ranging between 0.2 and 0.3%. Special techniques and prolonged distillation are required. The physical–chemical constants vary, depending on the origin of the rhizomes. The concrete has a violet-like fragrance. Orris Absolute: Orris absolute is obtained by alcoholic extraction of the concrete to separate the fatty acids and their esters. It may contain from 55 to 85% ketones (irone). Orris Re

The roots of Iris pallida and Iris pallida (Iris pallida) and I. Forentina (Iris pallida) are removed from soil and small young roots, dried and fermented at 400°C for six months. After crushing, they are steam distilled And gotta. The yield is 0.16%～0.27% (based on dry roots). Solvent extraction can also be used, with a yield of 0.5% to 0.8%. It is mainly produced in northern Italy, France, Germany and Morocco, and a small amount is produced in Yunnan, my country.

GB 2760-96 stipulates the allowable food flavors. It is used to prepare strawberry, peach, raspberry and other flavors. Mainly used for soft drinks, candy and gelatin sweets.