The dose of
OTPP administered was determined from the OTPP
content in oolong tea extract, as shown at Table 1.
Twenty mg/head of OTPP nearly corresponded to 200
mg/head of oolong tea extract. A 6.6 mg or 13.2 mg
portion of caffeine was added to 3 ml of test emulsion
before sonication, and this corresponded to the caffeine
content (6.6%) in oolong tea extract.