Plant derived active ingredient comprising plant extracts

A plant derived active ingredient comprising:

• an extract from at least one plant of the gender Olea, and
• an extract from at least one plant of the gender Tilia and/or an extract from at least one plant of the gender Cydonia,
• wherein the mass ratio between the extract from at least one plant of the gender Tilia and/or the extract from at least one plant of the gender Cydonia and the extract from at least one plant of the gender Olea is from 1:2 to 1:10, and
• wherein the plant derived active ingredient is obtained by an extraction method comprising:
• a) mixing and impregnating the extract from at least one plant of the gender Tilia and/or the extract from at least one plant of the gender Cydonia in a powder form with the extract from at least one plant of the gender Olea in an oily form and polyglyceryl-4-oleate at a temperature greater than a melting point of the extract from at least one plant of the gender Olea and under an atmosphere which is depleted or essentially depleted in oxygen to obtain an oily impregnation,
• b) heating the oily impregnation to a temperature between 80 to 200° C. for less than 10 minutes by means of microwaves and under an atmosphere which is depleted or essentially depleted in oxygen, and
• c) forming a microdispersion from the heated oily impregnation at a temperature greater than the melting point of the extract from at least one plant of the gender Olea and under an atmosphere which is depleted or essentially depleted in oxygen, by means of ultrasonic cavitation treatment,
• step c) being conducted before, during or after step b), and
• d) separating oil from the microdispersion to obtain the plant derived active ingredient.