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Plant Pigments for Human Health: Impact of Lycopene and Anthocyanins on Bioefficacy of Provitamin A Carotenoids From Carrots

NCT05319548 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2025-12-18

No results posted yet for this study

Summary

The proposed research will help characterize the impact that simultaneous consumption of anthocyanins and carotenoids has on the bioavailability of the provitamin A carotenoids a-carotene and b-carotene and the non-provitamin A carotenoid lycopene, and on their respective antidiabetic activity in humans. The central hypothesis is that provitamin A carotenoids will be bioavailable from purple-red multicolored carrots in humans, and the co-ingestion of carotenoids and anthocyanins from these carrots will have synergistic impacts on their respective antioxidant and antidiabetic effects. This hypothesis will be assessed through a 53 day randomized crossover time course study that consists of three arms in which healthy males and females ages 18-40 (n = 12) will consume carrot juice prepared from red, purple-red, or purple carrots. During each arm, participants will switch the type of juice they consume and by the end of the third arm, all participants will have ingested juice made from all three carrot varieties. Blood will be collected at multiple time points over 72 hours following consumption.

Conditions

  • Healthy

Interventions

OTHER

Purple-Red Carrot Juice

Purple-Red carrot juice contains provitamin A carotenoids (beta-carotene, alpha-carotene), the non-provitamin A carotenoid, lycopene, as well as anthocyanins

OTHER

Red Carrot Juice

Red carrot juice contains provitamin A carotenoids (beta-carotene, alpha-carotene), and the non-provitamin A carotenoid, lycopene, but does NOT contain anthocyanins..

OTHER

Purple Carrot Juice

Purple carrot juice does NOT contain provitamin A carotenoids (beta-carotene, alpha-carotene), nor the non-provitamin A carotenoid, lycopene, but contains anthocyanins.

Sponsors & Collaborators

  • University of Wisconsin, Madison

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2022-10-31
Primary Completion
2023-05-11
Completion
2023-05-11

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05319548 on ClinicalTrials.gov