Effect of beta-cryptoxanthin on students during pharmacy practice

Effect of beta-cryptoxanthin on students during pharmacy practice - Anti-stress effect of beta-cryptoxanthin

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000017165

Enrollment

Registered

2015-04-27

Start date

2015-04-27

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Stress

Interventions

Japanese mandarin orange juice containing beta-cryptoxanthin Placebo orange juice

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Students of pharmaceutical sciences in the 5th grade, non-smoker. Obtained written informed consent from the student before participation. Possible to take a pack of Japanese mandarin orange juice (125 ml) for 20days. Possible to check salivary amylase activity two times daily for 20 days.

Exclusion criteria

Exclusion criteria: Taking tranquilizer(s) Smoker Allergy against orange Diagnosed as inadequate to participate in the study by a doctor

Design outcomes

Primary

Measure	Time frame
Alteration in salivary amylase activity in students during pharmacy practice for 10 days	—

Secondary

Measure	Time frame
Physical condition, State-trait anxiety inventory (STAI) test, Sleeping time, Replying to a questionnaire (subjective stress, achievement emotion)	—

Countries

Japan

Contacts

Public ContactKeiko Unno

University of Shizuoka School of Pharmaceutical Sciences

kendaiunno@gmail.com054-264-5731

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026