Advantages of oleoresins over conventional spices are Free from physical impurities and extraneous matter - clean product. Free from pathogens and microbiological contaminants - sterile product. Versatility and ease of use The concentrated extract can be diluted to varying strengths to meet required end-use flavour, colour, taste, etc. Flexibility to develop multiple spice blends if required. Uniform dispersion of spice extract provides instant flavour release.
Concentrated form reduces storage space and bulk handling and transport requirements.
Concentrated and virtually moisture-free form of oleos ensures longer shelf life due to minimal oxidative degradation or loss of flavour and eliminates deterioration due to pests, mold, etc. Oleoresins are extracted by a process of solvent extraction, followed by removal of the solvent to extremely low levels typically less than 25-30 parts per million. The quality of an oleoresin is typically evaluated on the basis of presence of the active ingredients in desired levels.