The Effects of Whey, Rice and Potato pRotein isOlates on appeTite rEgulatIoN in Healthy Men

Comparative Effects of Dairy and Plant-based Protein Intake on Acute Glucose Homeostasis and Appetite Regulation in Healthy Men

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04876495

Acronym

PROTEIN

Enrollment

Registered

2021-05-06

Start date

2018-07-20

Completion date

2021-02-19

Last updated

2021-05-06

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

Conditions

Appetite and General Nutritional Disorders

Keywords

nutraceutical, protein, whey, potato protein, rice protein, appetite, satiety, insulin, glucose, appetite hormone, GLP-1, PYY, supplement

Brief summary

INTRODUCTION: Global protein consumption has been increasing for decades due to changes in socio-economic demographics and consumer trends towards higher protein intake, which may be related to their health benefits in performance nutrition and appetite regulation. The additional intake of protein often occurs in the form of supplements. One of the main ingredients used in sports and weight loss supplements are animal-derived proteins such as whey, which are of high quality, containing all the essential amino acids required in human nutrition with a high absorption rate. However, whey protein has a high environmental footprint, and it may contribute to insulin resistance in susceptible groups (e.g. obese, T2DM, insulin resistant, or those with sarcopenic obesity). Rice and potato protein isolates are high-quality plant proteins containing all essential amino acids comparably to whey protein. These plant-derived proteins may provide a more sustainable and accessible alternative to animal-derived proteins for appetite regulation and weight management.

Detailed description

Intervention study with three treatment groups in a randomised, single-blind, triple crossover design. Study population: Healthy male participants will receive three different isocaloric and -volumetric protein shakes prepared using whey, rice and potato protein powders on different trial days with at least a one-week washout period apart. Biological samples (blood and saliva samples) are collected at various time points during the visit. Blood samples are collected at baseline 10 min prior (T-10), then at 30 min (T30), 60 min (T60), 120 min (T120) and at 180 min (T180) after protein shake consumption. Saliva samples are collected at baseline (T-10), then at every 30 minutes following protein shake consumption (T30, T60, T90, T120, T150, T180). In addition, pertinent questionnaires Visual Analogue Scale \[VAS\] for the assessment of satiety and VAS for the assessment of protein shakes' perception will be collected at T-10, T30, T60, T90, T120, T150, T180 and at T0, respectively

Interventions

DIETARY_SUPPLEMENTWhey protein isolate

Instantized BiPRO® 50g (equiv. 45.5g of total protein) presented to participants in a form of a shake. Other ingredients in the whey protein shake: * Tropicana Trop50 Orange Juice 207mL * Water 43 mL * Sucralose 0.5g The total energy 233.47Kcal. Participants instructed to consume the entire protein shake presented to them in 5 minutes on an empty stomach when attending the study.

DIETARY_SUPPLEMENTPotato protein isolate

Solanic®100 48g (equiv. 45.3g of total protein) presented to participants in a form of a shake. Other ingredients in the potato protein shake: * Tropicana Trop50 Orange Juice 250mL * Sucralose 0.5g The total energy 233.46Kcal Participants instructed to consume the entire protein shake presented to them in 5 minutes on an empty stomach when attending the study.

DIETARY_SUPPLEMENTRice protein isolate

Oryzatein® Silk 90 50g (equiv. 45.5g of total protein) presented to participants in a form of a shake. Other ingredients in the rice protein shake: * Tropicana Trop50 Orange Juice 183mL * Water 67mL * Sucralose 0.5g The total energy 233.43Kcal Participants instructed to consume the entire protein shake presented to them in 5 minutes on an empty stomach when attending the study.

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

BASIC_SCIENCE

Masking

SINGLE (Subject)

Intervention model description

single-blind, randomised, triple crossover

Eligibility

Sex/Gender

MALE

Age

18 Years to 65 Years

Healthy volunteers

Yes

Inclusion criteria

* Males (18-65 years of age) * Healthy subjects

Exclusion criteria

* \<18 years or \>65 years * Consumption of \>21 units of alcohol/week * Dieters * Any allergies/health issues related to items being ingested * Any serious illnesses or those on medication * Any illness affecting taste or appetite * Any gastrointestinal disorders * Any eating disorders * Any depression/mental disorders * Smoking

Design outcomes

Primary

Measure	Time frame	Description
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T180)	Visual Analogue Scale for Appetite (VAS-A) collected 180 minutes after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucose levels (T-10)	Glucose measured 10 minutes prior to protein shake consumption	Marker: glucose (mmol/L)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucose levels (T30)	Glucose measured 30 minutes post protein shake consumption	Marker: glucose (mmol/L)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucose levels (T60)	Glucose measured 60 minutes post protein shake consumption	Marker: glucose (mmol/L)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucose levels (T120)	Glucose measured 120 minutes post protein shake consumption	Marker: glucose (mmol/L)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucose levels (T180)	Glucose measured 180 minutes post protein shake consumption	Marker: glucose (mmol/L)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on insulin levels (T-10)	Insulin measured 10 minutes prior to protein shake consumption	Marker: insulin (ng/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on insulin levels (T30)	Insulin measured 30 minutes post protein shake consumption	Marker: insulin (ng/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on insulin levels (T60)	Insulin measured 60 minutes post protein shake consumption	Marker: insulin (ng/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on insulin levels (T120)	Insulin measured 120 minutes post protein shake consumption	Marker: insulin (ng/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on insulin levels (T180)	Insulin measured 180 minutes post protein shake consumption	Marker: insulin (ng/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucagon-like peptide 1 levels (T-10)	Glucagon-like peptide 1 measured 10 minutes prior to protein shake consumption	Markers: glucagon-like peptide 1 (pM)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucagon-like peptide 1 levels (T30)	Glucagon-like peptide 1 measured 30 minutes post protein shake consumption	Markers: glucagon-like peptide 1 (pM)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucagon-like peptide 1 levels (T60)	Glucagon-like peptide 1 measured 60 minutes post protein shake consumption	Markers: glucagon-like peptide 1 (pM)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucagon-like peptide 1 levels (T120)	Glucagon-like peptide 1 measured 120 minutes post protein shake consumption	Markers: glucagon-like peptide 1 (pM)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on glucagon-like peptide 1 levels (T180)	Glucagon-like peptide 1 measured 180 minutes post protein shake consumption	Markers: glucagon-like peptide 1 (pM)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on peptide tyrosine tyrosine levels (T-10)	Peptide tyrosine tyrosine measured 10 minutes prior to protein shake consumption	Markers: peptide tyrosine tyrosine (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on peptide tyrosine tyrosine levels (T30)	Peptide tyrosine tyrosine measured 30 minutes post protein shake consumption	Markers: peptide tyrosine tyrosine (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on peptide tyrosine tyrosine levels (T60)	Peptide tyrosine tyrosine measured 60 minutes post protein shake consumption	Markers: peptide tyrosine tyrosine (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on peptide tyrosine tyrosine levels (T120)	Peptide tyrosine tyrosine measured 120 minutes post protein shake consumption	Markers: peptide tyrosine tyrosine (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on peptide tyrosine tyrosine levels (T180)	Peptide tyrosine tyrosine measured 180 minutes post protein shake consumption	Markers: peptide tyrosine tyrosine (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on ghrelin levels (T-10)	Ghrelin (pg/mL) measured 10 minutes prior to protein shake consumption	Markers: ghrelin (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on ghrelin levels (T30)	Ghrelin (pg/mL) measured 30 minutes post protein shake consumption	Markers: ghrelin (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on ghrelin levels (T60)	Ghrelin (pg/mL) measured 60 minutes post protein shake consumption	Markers: ghrelin (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on ghrelin levels (T120)	Ghrelin (pg/mL) measured 120 minutes post protein shake consumption	Markers: ghrelin (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on ghrelin levels (T180)	Ghrelin (pg/mL) measured 180 minutes post protein shake consumption	Markers: ghrelin (pg/mL)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T-10)	Visual Analogue Scale for Appetite (VAS-A) collected immediately prior to protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T30)	Visual Analogue Scale for Appetite (VAS-A) collected 30 minutes after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T60)	Visual Analogue Scale for Appetite (VAS-A) collected 60 minutes after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T90)	Visual Analogue Scale for Appetite (VAS-A) collected 90 minutes after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T120)	Visual Analogue Scale for Appetite (VAS-A) collected 120 minutes after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)
To assess the acute effects of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO® on appetite (T150)	Visual Analogue Scale for Appetite (VAS-A) collected 150 minutes after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Appetite (VAS-A). Scores range from 0 to 100 (the higher the score the greater the level of appetite)

Secondary

Measure	Time frame	Description
To assess the perception of Solanic®100, Oryzatein® Silk 90 and Instantized BiPRO®	VAS for Palatability collected immediately after protein shake consumption	Subjective analysis including: Visual Analogue Scale for Palatability (VAS-P). Scores range from 0 to 100 (the higher the score the lower the palatability)

Countries

United Kingdom

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026