Optimum Parameters for Fining Extract of Garlic Soluble Solids with Acidic Silica and Bentonite

摘要

To produce dried garlic soluble solids extract (GSSE), the method of the economical and rapid method of fining fructan extracts solution was investigated. The acidic silica sol and the bentonite as fining reagents at different concentrations were added into the garlic juice at soluble solids (SS) 6%,12% and 15% (WAV) and at pH 4, 5,6,7. The results showed that pH values affected fining firstly, and silcan sol did secondly at SS = 12% but bentonited did secondly at SS = 15%. When silica sol and bentonite were added at 0.2% and 0.1% (V/V), respectively, and at pH 4, the clarifying operation not only reached an acceptable yield of protein precipitate and other impurities, but it was also economically viable. It is concluded that acceptable fining parameters waries based on the GSSE and could be obtained according to the test for the producing dried GSSE as the source of fructan.