Patent · US Expired

Process for obtaining a pepper extract with insecticidal activity

US4820517A · kind A · utility

6Cited by

3References

16Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Hans Pfeiffer · Haan, DE
Manfred Biermann · Wiesloch, DE
Peter Schroeder · Mengham, GB
Gerd Goebel · Erkrath, DE
Annemarie Mueller · Monheim, DE

Key dates

Filing date	Jul 24, 1986
Grant date	Apr 11, 1989
Priority date	—
Expiry date	Jul 24, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02A50/30
WIPO fieldFood chemistry
WIPO sectorChemistry

Abstract

An insecticidally active fraction is obtained from black pepper by a process comprising the following steps: PA0 (a) extraction of black pepper in ground form with CO.sub.2 at 30 to 70.degree. C. and 150 to 500 bar; PA0 (b) removal of sharp tasting fractions therein in a first expansion step at 25 to 35.degree. C. and 70 to 150 bar; PA0 (c) removal of an oily fraction containing the insecticidally active components as well as most of the essential oils in a second expansion step at 15 to 30.degree. C. and 40 to 70 bar; PA0 (d) removal of essential oils by steam distillation, and if desired; PA0 (e) hydrogenation of the insecticidally active components.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.