Patent ID: 7718199

Claim:
A Syringa vulgaris plant cell line extract comprising between 30% and 90% by weight phenylpropanoids and between 70% and 10% by weight of a chromophore-free fraction consisting essentially of oligo- and polysaccharide, protein and lipid molecules obtained by: a) subjecting a biomass obtained following culture of said plant cell line to a thermal enzyme deactivating treatment at a temperature between 50° C. and 150° C.; b) homogenizing the product obtained by step a) to provide an aqueous phase containing cell residue; c) separating the aqueous phase from the cell residue by means of gravity filtration, pressure filtration or centrifugation; d) performing an extraction of the aqueous phase obtained following step c) with hydrophobic interaction resin; and e) recovering the extract from the resin by means of elution with a mixture of alcohols having up to 5 carbon atoms, in water in percentages varying from 30% up to just under 100% by volume, wherein the plant cell line is a stabilized cell line of Syringa vulgaris cell line IRB-SV25/B (DSM:16857).