| abstract |
Principal components of herb or spice plant materials are simultaneously extracted and concentrated in at least one high temperature and pressure mechanical pressing step. The extract may be hydrated and then centrifuged to remove fine particulate solids and gums. A solution having several times the concentration of the pigments and flavor and aroma components of the starting raw material is obtained. The residual press solids and extract have significantly reduced bacterial counts as a result of the temperatures, high pressure, and high shear utilized, as well as the low moisture levels employed, thus producing not only a food grade extract but also a food grade residual solid having low bacterial counts and predictable, standardized levels of the principal components of interest. Additionally, edible antioxidants can be included in the process to enhance the stability of both the extract and the residual solids. The residual solids are ruptured in the process, giving rise to a quick-release and enhanced effect, and thus greater use effectiveness, when the herb or spice solids are used in foods or beverages. |