2

3

4

5

1

2

6

gelatin solution

gelatin in H2O

at 70◦ Cgum arabic in H2O

at 70◦ Cpeppermint oil

emulsify mix

HCl

cool 10◦ C

crosslinked

microcapsules

separation of

water

isolation of

microcapsules

freeze drying

homogenizer

7

CNRL + H2O

stirrer 5 min

20% ammonium

laurate

essential oil

stirrer 15 min

dried at 50◦ C

8

9

10

11

12

•

•

13

14