ClinicalTrials.gg
RecruitingNCT06421194Updated May 20, 2024

Functional and Nutritional Plant-based Mixed Protein Study (FuN Protein Study)

An interventional study of Investigational meal 1 - Commercial animal-based protein foods [Siew mai (6 pieces) and Ngoh hiang (2 pieces)] and Investigational meal 2- Commercial animal-based protein foods [Gyoza (11 pieces) and Luncheon meat (5 pieces)] in Nutrition, Healthy, sponsored by Singapore Institute of Food and Biotechnology Innovation. Recruiting at 1 site in Singapore. Open to male participants aged 21 Years to 45 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-05-20.

Sponsored by Singapore Institute of Food and Biotechnology Innovation · Not applicable, Interventional, and Other

From the registry’s dates

  • Primary completion was expected by Jan 2025, 1 year 10 months ago, but the record still lists the study as recruiting.
  • Started Feb 2024; still recruiting 2 years 8 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
28
Allocation
Randomized
Ages
21 Years to 45 Years
Sex
Male
01

Study summary

The study aims to investigate the effects of optimized plant protein mixtures versus their animal protein equivalents on satiety, protein metabolism, and overall metabolic health

Read the detailed description

The research described in this application is crucial as it addresses a fundamental issue - the nutrition quality of plant-based diets. Plant-based diets are widely acknowledged for their health benefits as they are known to reduce disease risks and all-cause mortality. However, concerns about plant protein quality arise due to disparities in amino acid profiles, particularly their essential amino acid adequacy, which remains a challenge in adopting a plant-based protein diet as part of a healthy diet. Other challenges include low palatability, poor texture, flavor, and mouthfeel. To address this, the Singapore Institute of Food and Biotechnology Innovation (SIFBI) has developed Asian-centric plant-based food products by combining multiple plant-protein sources to emulate the amino acid profile of animal proteins. This approach aims to optimize plant-based diets by ensuring enhanced protein quantity and quality in a mixed meal, not only to encourage adaptation of plant based protein into daily meals for environmental sustainability but also with the long-term objectives to use diet as a means to improve metabolic health in the Asian demographics. This human study is designed to explore the effects of consuming optimized plant-protein-based products compared to conventional animal protein- based products on postprandial metabolism and overall metabolic health. The study is structured around several specific objectives:

  1. Evaluate Nutritional Impact: The study aims to assess the nutritional efficacy of the investigational food products. This will involve measuring circulating amino acids and protein metabolism markers, such as blood urea and amino acid metabolites. Additionally, the study will examine the effects of these foods on overall metabolic health, including their impact on glycaemic response and inflammatory markers.
  2. Investigate Postprandial Satiety: Another key aim is to explore the effects of investigational food items on postprandial appetite and satiety. This will help determine how these foods influence hunger and fullness sensations following consumption, which is crucial for understanding their potential role in weight management and metabolic regulation.
  3. Investigate Consumer Acceptance: The study will also assess consumer acceptance of the investigational food products to identify the potential barriers. This includes evaluating the palatability of these products, as their taste, texture, and overall appeal are vital factors in determining their potential integration into regular diets.
  4. Gain Mechanistic Insight: The study seeks to gain deeper mechanistic insights by systematically investigating changes in the postprandial circulating proteome. This analysis will enhance our understanding of the biological processes and pathways involved in the body's response to these food products post-consumption.
02

Conditions studied

  • Nutrition, Healthy

Keywords

  • plant-based protein
  • Asian
  • diet
  • health outcomes
  • animal-based protein
03

In context

Lead sponsor

Singapore Institute of Food and Biotechnology Innovation is the lead sponsor of 69 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years to 45 Years
Sexes eligible
Male
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male
  • Chinese ethnicity
  • Age between 21 to 45 years
  • (BMI) between 18.5 to 27.5 kg/m2
  • English-literate

Exclusion criteria

Exclusion criteria:

  • Smoking
  • Having allergies or intolerances to any common food ingredients including eggs, fish, milk, peanuts, and tree nuts, shellfish, soya, wheat, pea, gluten, cereal, fruits, dairy products, meat, vegetable, sugar and sweetener, natural food colourings or flavourings, etc.
  • Following special diets or having intentional dietary restrictions (e.g., vegetarians/vegans)
  • Having a dislike towards plant-based or chicken-based foods
  • Not willing to adhere to diet modification as in the study's instructions
  • Not willing to stop any strenuous activity during or within 24 hours of test days
  • Having glucose-6-phosphate dehydrogenase deficiency (G6PD deficiency)
  • Having alcohol consumption on > 4 days per week with ≥ 6 alcoholic drinks per week
  • Having sustained elevation of blood pressure (>160/95 mm Hg)
  • reading ≥ 6.5% (raised non-fasted/random HbA1c as defined by WHO/ IDF)
  • Having previously undergone any gastrointestinal surgery or having history of gastrointestinal disorders
  • Having a history of heart, liver, kidney, blood disorders (e.g., thalassemia) or thyroid dysfunctions
  • Diabetic
  • Having history of tuberculosis, , or infections
  • Having any prescription medication or any other alternative medicines or supplements (amino acids supplements, e.g. L-carnitine, glutamine and arginine) which may interfere with study measurements in the opinion of the study investigators
  • Having antibiotics or suffering from diarrhoea within the last 4 weeks
  • Having donated blood within 4 weeks of study participation
  • Having poor veins or having history of severe vasovagal syncope (blackouts or fainting) from blood draws
  • Employees of the SIFBI (Singapore Institute of Food and Biotechnology Innovation).
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

HbA1c

A blood test of average blood sugar over the past two to three months, given as a percentage or in mmol/mol. 6.5% (48 mmol/mol) or more is the usual threshold for diabetes, normally confirmed by a second test.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
28 participants (estimated)

Study arms

  • Experimental
    Treatment 1 Animal-based protein meal

    Animal-based protein meal; Isoproteic at \~30g of total protein per meal. Siew mai (6 pieces) - steamed Ngoh Hiang (2 pieces) - oven baked

    Other: Investigational meal 1 - Commercial animal-based protein foods [Siew mai (6 pieces) and Ngoh hiang (2 pieces)]

  • Experimental
    Treatment 2 Animal-based protein meal

    Animal-based protein meal; Isoproteic at \~30g of total protein per meal. Gyoza (11 pieces) - steamed Luncheon meat (5 pieces) - oven baked

    Other: Investigational meal 2- Commercial animal-based protein foods [Gyoza (11 pieces) and Luncheon meat (5 pieces)]

  • Experimental
    Treatment 3 Plant-based protein meal

    Plant-based protein meal; Isoproteic at \~30g of total protein per meal. Siew mai (6 pieces) - steamed Ngoh Hiang (1 piece cut into 2) - oven baked

    Other: Investigational meal 3- Formulated plant-based protein foods [Siew mai (6 pieces) and Ngoh hiang (1 piece cut into 2)]

  • Experimental
    Treatment 4 Plant-based protein meal

    Plant-based protein meal; Isoproteic at \~30g of total protein per meal. Gyoza (11 pieces) - steamed Luncheon meat (5 pieces) - oven baked

    Other: Investigational meal 4- Formulated plant-based protein foods [Gyoza (11 pieces) and Luncheon meat (5 pieces)]

Interventions

  • OtherInvestigational meal 1 - Commercial animal-based protein foods [Siew mai (6 pieces) and Ngoh hiang (2 pieces)]

    Participants consume a meal consisting of commercial animal-based protein foods (steamed Siew mai and oven-baked Ngoh hiang) in a fasted state.

  • OtherInvestigational meal 2- Commercial animal-based protein foods [Gyoza (11 pieces) and Luncheon meat (5 pieces)]

    Participants consume a meal consisting of commercial animal-based protein foods (steamed Gyoza and oven-baked Luncheon meat) in a fasted state.

  • OtherInvestigational meal 3- Formulated plant-based protein foods [Siew mai (6 pieces) and Ngoh hiang (1 piece cut into 2)]

    Participants consume a meal consisting of formulated plant-based protein foods (steamed Siew mai and oven-baked Ngoh hiang) in a fasted state.

  • OtherInvestigational meal 4- Formulated plant-based protein foods [Gyoza (11 pieces) and Luncheon meat (5 pieces)]

    Participants consume a meal consisting of formulated plant-based protein foods (Gyoza and Luncheon meat) in a fasted state.

06

What researchers measure

Primary outcomes

  1. Free amino acids

    Blood samples collected at 0, 15, 30, 45, 60, 90, 120, 150 and 180 minutes (plasma and serum)

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

  2. Protein utilization

    Blood samples collected at 0, 15, 30, 45, 60, 90, 120, 150 and 180 minutes (plasma and serum)

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

  3. Glucose homeostasis

    Blood samples collected at 0, 15, 30, 45, 60, 90, 120, 150 and 180 minutes (serum)

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

  4. Gut hormones

    Blood samples collected at 0, 15, 30, 45, 60, 90, 120, 150 and 180 minutes (plasma and serum)

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

  5. Markers related to general metabolic health

    Blood samples collected at 0, 15, 30, 45, 60, 90, 120, 150 and 180 minutes (plasma and serum)

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

Secondary outcomes

  1. Untargeted proteomics

    To study molecular mechanism underlying the observed outcomes (plasma and serum).

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

  2. Visual Analogue Scale Questionnaire

    To assess participant's postprandial appetite and satiety, participants complete, C a Visual Analogue Scale (VAS) questionnaire pertaining to their appetite. At baseline time 0 minute, one question will be asked and participants will mark on a scale to indicate how they feel at that moment. A. Questions on appetite and desire for specific food type (how hungry you feel, how satisfied you feel, how full you feel, how much do you think you can eat) Time 15 minute to time 180 minute (8 time points, post meal), following two questions will be asked and participants will mark on a scale to indicate how they feel at that moment. A. Questions on appetite and desire for specific food type (how hungry you feel, how satisfied you feel, how full you feel, how much do you think you can eat) B. Questions on palatability of test meal (to complete immediately after meal intake) (visual appeal, smell, taste, aftertaste, palatibility)

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

  3. Gastrointestinal Symptoms Questionnaire

    Participants complete a questionnaire pertaining to their gastrointestinal (GI) symptoms before investigational meal (0 minute) and at the end of the session (180 minute). Gastrointestinal symptoms pertaining to flatulence, rumbling, bloating, abdominal pain, abdominal cramps, nausea.

    Time frame: The initial baseline (before investigational meal) at 0 minute, and eight intervals post-meal at 15, 30, 45, 60, 90, 120, 150, and 180 minutes.

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 20, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06421194
Lead sponsor
Singapore Institute of Food and Biotechnology Innovation
Responsible party
Melvin Leow (Principal Investigator, Singapore Institute of Food and Biotechnology Innovation) — Principal investigator
First posted
May 20, 2024
Start date
Feb 23, 2024
Primary completion
Jan 1, 2025 (estimated)
Completion
Jan 1, 2025 (estimated)
Last update
May 20, 2024

Study contacts

Melvin Leow, Professor
Contact
melvin_leow@sifbi.a-star.edu.sg
Wu Jia Yee, PhD
Contact
wu_jia_yee@sifbi.a-star.edu.sg
6407 0778
Melvin Leow, Professor
principal investigator · Singapore Institute of Food and Biotechnology Innovation (SIFBI), A*STAR

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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