US 7,473,434 B2
	Maca extract and cosmetic composition containing such an extract
Nathalie Piccardi, Arceau (France); Antoine Piccirilli, Versailles (France); Philippe Msika, Versailles (France); and François Paul, Toulouse (France)
Assigned to Laboratoires Expanscience, Courbevoie (France)
Appl. No. 10/561,271 PCT Filed Jun. 17, 2004, PCT No. PCT/FR2004/001505 § 371(c)(1), (2), (4) Date Dec. 19, 2005, PCT Pub. No. WO2004/112742, PCT Pub. Date Dec. 29, 2004.
Claims priority of application No. 03 07388 (FR), filed on Jun. 19, 2003.
Prior Publication US 2007/0098823 A1, May 03, 2007
Int. Cl. A01N 65/00 (2006.01)

U.S. Cl. 424—725

20 Claims

1. Method for preparing an aqueous peptide extract of maca, comprising hydrolyzing proteins of a powder of ground maca tubers in the presence of water, protease and amylase to form an aqueous peptide extract, and purifying the aqueous peptide extract by ultrafiltration.