Glycemic Index of Sweet Corn

March 25, 2026 updated by: University of Florida

Determination of the Glycemic Index of Differently Processed Sweet Corn

Processing sweet corn may impact digestibility and, therefore, glycemic response following consumption. The primary aim of this study is to assess the glycemic index of various sweet corn products and varieties. An exploratory aim is to assess hunger/satiety scores following sweet corn intake.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

45

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Florida
      • Gainesville, Florida, United States, 32611
        • University of Florida
      • Gainesville, Florida, United States, 32611
        • Food Science and Human Nutrition Building

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Able to provide written consent in English
  • Willing to consume 50 g of glucose in less than 15 minutes (2 mornings)
  • Willing to consume around 250 to 350 g of sweet corn in 10 to 15 minutes (3 mornings)
  • Willing to provide 7 capillary blood samples by fingerstick (by fine lancet) during each 2-hour session

Exclusion Criteria:

  • Metabolic disease or condition affecting blood glucose, such as diabetes type 1 and 2, metabolic syndrome, or polycystic ovary syndrome
  • Baseline fasting blood glucose > 100 mg/dL
  • Currently pregnant

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Glucose Tolerance Drink
50 g glucose beverage
Other: Glucose Tolerance Drink
Beverage providing 50 g of glucose
Experimental: Sweet corn
Sweet corn providing 50 g of available carbohydrate
Other: Sweet corn
Fresh and processed sweet corn

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
iAUC
Time Frame: From enrollment to the end of 5 weeks.
Incremental area under the glycemic response curve (iAUC)
From enrollment to the end of 5 weeks.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Hunger and Satiety Score
Time Frame: From enrollment to the end of 5 weeks.
Hunger and Satiety Visual Analogue Scale from 0 to 100 mm (higher number indicates increased hunger, satisfaction, fullness, and eating perception)
From enrollment to the end of 5 weeks.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Florida

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 5, 2025

Primary Completion (Actual)

June 17, 2025

Study Completion (Estimated)

June 30, 2026

Study Registration Dates

First Submitted

February 21, 2025

First Submitted That Met QC Criteria

February 21, 2025

First Posted (Actual)

February 26, 2025

Study Record Updates

Last Update Posted (Actual)

March 31, 2026

Last Update Submitted That Met QC Criteria

March 25, 2026

Last Verified

August 1, 2025

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • IRB202500171
  • 2022-51181-38333 (Other Grant/Funding Number: US DEPT OF AG NATL INST OF FOOD AND AG)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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