The loading efficiency and release profile of microcapsules
For measuring the loading efficiency of microcapsules, 20 mg of
M–F microcapsules were initially added to a 15 mL tube containing
10 g of methanol and then they were broken by an ultrasonic
homogenizer (VCX 750, Sonics and Materials, Inc., Newtown,
Conn., U.S.A.) for 20 min at 4 ◦C. The amount of thyme oil