Use of Labiatae herb preparations for extending the flavor shelf life of malt beverages
申请人:Mennett H. Randall
公开号:US20050058745A1
公开(公告)日:2005-03-17
The present invention is concerned with a method for enhancing the flavor shelf life of beverages, including beer and other malt beverages, by incorporating Labiatae herb extracts either to the finished beverage or into a step in the manufacture of the beverage.
Structure of Rosmanol, A New Antioxidant from Rosemary (<i>Rosmarinus officinalis</i>L.)
作者:Nobuji Nakatani、Reiko Inatani
DOI:10.1080/00021369.1981.10864897
日期:1981.10
Recovery of Antioxidant Activity from Carnosol Quinone: Antioxidants Obtained from a Water-Promoted Conversion of Carnosol Quinone
作者:Toshiya Masuda、Takuya Kirikihira、Yoshio Takeda
DOI:10.1021/jf050685s
日期:2005.8.1
Carnosol is one of the main antioxidants in sage and rosemary. Although carnosol quinone is the antioxidation product of carnosol and has a very weak antioxidant activity, its treatment in water-containing solvent restored its strong antioxidant activity. HPLC analysis of the water-stimulated recovery reaction of the antioxidant activity revealed that the strong activity was due to the reproduced camosol. The analysis also showed that an almost equal amount of quinone derivatives of rosmanol (rosmanol quinone) was produced in the reaction along with the camosol. The rosmanol was formed by the addition of 1 equiv of water and the following isomerization from camosol quinone in the water-containing solvent. The formed rosmanol was also found to be oxidized by the remaining camosol quinone to produce rosmanol quinone. At the same time, camosol quinone was reduced to afford camosol. This redox phenomenon is an important part of the mechanism for the recovery of the antioxidant activity from camosol quinone under the water-containing conditions.
THE USE OF LABIATAE HERB PREPARATIONS FOR EXTENDING THE FLAVOR SHELF LIFE OF MALT BEVERAGES