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Effect of Date Seeds Coffee on Mood and Cognitive Performance

Study Description
Brief Summary:
Limited utilizations of date seeds have previously been explored, and so previously wastage has often been the normality. However, research now indicates that several fruit seeds contain higher concentrations of beneficial total phytochemicals within their seeds in comparison to the flesh. As well as high nutritional values of date seeds for fibre, protein and micronutrients, this increased phytochemical content has been proven to be true for date seeds, with mainly phenolic acids (24.6 g k GAE) 3 and total flavonoids (3.67 g k RE). With the seeds presently being used to produce new coffee products, it raises questions on whether consumption of date seeds can alter mood and cognitive behaviour and therefore research into investigate the acute effect of date seeds coffee on mood and cognitive function on healthy young volunteers. However, to the best of the research team knowledge, this is the first human trial to investigate these effects.

Condition or disease Intervention/treatment Phase
Health Status Dietary Supplement: Date coffee Dietary Supplement: Normal coffee Dietary Supplement: Placebo Not Applicable

Detailed Description:

Introduction

Seeds of the date palm (P. dactylifera) are a very rich source of bioactive compounds, thus constituting strong candidates for functional food additives and nutraceuticals. Many promising results were observed when the effect of date flesh and seeds consumption have been studied in animals, for their role as either a protective1 against neurodegenerative 2,4,5 diseases, or as a cure for it 2. Most of the observed effects were attributed to the antioxidant and anti-inflammatory properties in dates flesh and seeds fruit due to it high content of phenolic compounds 3.

Rational For years, date seeds were considered a waste, having no other uses except for feeding animals. However, as has already been demonstrated in other fruits and corresponding seeds, total phytochemical content of the date seeds was higher than in the edible flesh9. Date seeds have also been shown to have an excellent nutritional quality due to high amounts of fibre (676-742 g/kg) 3 depending on variety, considerable amounts of minerals, vitamins, lipids and protein. Additionally, date seeds were shown to be rich in antioxidants containing mainly phenolic acids (24.6 g k Gallic Acid equivalent) 3 and total flavonoids (3.67 g k Rutin Equivalent).

Nowadays, and on sight of the aforementioned findings, date seeds are used to make a new coffee product. This ''coffee alternative'' is commercially available and is becoming more popular.

Although, many studies have demonstrated that date seeds possess high antioxidant activities, due to their high content of flavonoids and phenolic compounds, no human trial has investigated the effect of the consumption of date seeds on humans and especially on mood and cognitive behaviour. Therefore, this study, for the first time, to the best of the research team knowledge will investigate the acute effect of date seeds coffee on mood and cognitive function on healthy young volunteers.

Aim The aim of this study is to investigate the acute effects of a coffee made of date seeds on mood and cognitive performance.

Study Design
Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 52 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Official Title: Investigating the Acute Effects of Mood and Cognitive Performance Following the Administration of a Coffee Made of Date Seeds on Healthy Young Volunteers.
Actual Study Start Date : June 20, 2019
Actual Primary Completion Date : March 7, 2020
Actual Study Completion Date : March 30, 2020
Arms and Interventions
Arm Intervention/treatment
Experimental: Date seeds filtered coffee
Each participant will consume this arm in a visit has been allocated by Latin Square randomisation order: 45 g of date seeds coffee in 280 ml of boiled water, coffee flavour and brown food colouring ( made using a filter coffee machine). it will be served in a paper cup with lid
Dietary Supplement: Date coffee
45 g of date seeds coffee in 280 ml of water

Experimental: Normal filtered coffee
Each participant will consume this arm in a visit has been allocated by Latin Square randomisation order: 6 g of coffee in 280 ml of boiled water (made using a filter coffee machine) it will be served in a paper cup with lid
Dietary Supplement: Normal coffee
6 g of normal coffee in 280ml of water

Placebo Comparator: Placebo
Each participant will consume this arm in a visit has been allocated by Latin Square randomisation order: 280 of boiled water, coffee flavour and brown food colouring it will be served in a paper cup with lid
Dietary Supplement: Placebo
water, food colouring and coffee flavouring

Outcome Measures
Primary Outcome Measures :
  1. The average of the change in 9 cognitive indexes including: Attentional Intensity, Sustained Attention, Attentional Fluctuation, Memory Retrieval Speed, Cognitive Reaction Time, Working Memory Capacity, Episodic Memory Capacity, Quality of Memory [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).


Secondary Outcome Measures :
  1. Change in Caffeine consumption using caffeine consumption questionnaire [ Time Frame: Change form Baseline for each visit only ]
    A paper based questionnaire developed by Erika Bühler et al., 2014. At the screening visit and on each study day participants will be asked to complete the table in order to build a picture of their individual caffeine habits

  2. Caffeine research Visual Analogue Scales [ Time Frame: Change from baseline 45 minutes post dose and at 90 minutes post dose. ]
    A caffeine research Visual Analogue Scales which comprises of 7 scales (relaxed, alert, jittery, tired, tense, headache and overall mood).

  3. Change in Mood using Bond Lader Visual Analogue Scales [ Time Frame: Change from baseline 45 minutes post dose and at 90 minutes post dose. ]
    This widely used set of 16 100 mm VASs yields three extensively validated factor scores: alertness, calmness and contentment.


Eligibility Criteria
Layout table for eligibility information
Ages Eligible for Study:   18 Years to 35 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

Healthy young volunteers age between 18 to 35

Exclusion Criteria:

Participants will be ineligible to participate in the study if any of the following apply:

  1. Have a BMI above 35kg/m2
  2. Smokers or tobacco product consumers which includes electronic cigarettes
  3. Are taking any illicit or prescribed drugs.
  4. Have a history of, or currently, abuse alcohol
  5. Have a history of dyslexia, ADHD, learning difficulties or colour blindness,
  6. Females who are pregnant, lactating or seeking to become pregnant, or are at risk of pregnancy as they to do not use birth control measures
  7. Have allergies to any food product.
Contacts and Locations

Locations
Layout table for location information
United Kingdom
NU-Food Research Facility
Newcastle upon Tyne, Tyne And Wear, United Kingdom, NE1 7RU
Sponsors and Collaborators
Newcastle University
Tracking Information
First Submitted Date  ICMJE December 19, 2018
First Posted Date  ICMJE July 5, 2019
Last Update Posted Date August 31, 2020
Actual Study Start Date  ICMJE June 20, 2019
Actual Primary Completion Date March 7, 2020   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: February 28, 2020)
The average of the change in 9 cognitive indexes including: Attentional Intensity, Sustained Attention, Attentional Fluctuation, Memory Retrieval Speed, Cognitive Reaction Time, Working Memory Capacity, Episodic Memory Capacity, Quality of Memory [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
Cog-track an online set of nine cognitive tests (www.wesnes.com).
Original Primary Outcome Measures  ICMJE
 (submitted: July 3, 2019)
  • Change in Attention intensity index using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Sustained attentional index using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Attention fluctuation index using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Memory retrieval speed index using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Cognitive reaction time using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Working memory capacity index using Cogtrack [ Time Frame: Assessing change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Episodic memory capacity index using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Quality of memory index using Cogtrack [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Alertness ( mood) using Bond Lader [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    Cog-track an online set of nine cognitive tests (www.wesnes.com).
  • Change in Contentment (mood) using Bond Lader [ Time Frame: Assessing change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    A comprising of 16, 100mm visual analogue scales which produce three mood factor scores
  • Change in Calmness (mood) using Bond Lader [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    A comprising of 16, 100mm visual analogue scales which produce three mood factor scores.
  • Change in Mood factors using caffeine research visual analogue scales [ Time Frame: Change from baseline at 45 minutes post dose and at 90 minutes post dose for each visit ]
    A comprising of 16, 100mm visual analogue scales which produce three mood factor scores.
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: February 28, 2020)
  • Change in Caffeine consumption using caffeine consumption questionnaire [ Time Frame: Change form Baseline for each visit only ]
    A paper based questionnaire developed by Erika Bühler et al., 2014. At the screening visit and on each study day participants will be asked to complete the table in order to build a picture of their individual caffeine habits
  • Caffeine research Visual Analogue Scales [ Time Frame: Change from baseline 45 minutes post dose and at 90 minutes post dose. ]
    A caffeine research Visual Analogue Scales which comprises of 7 scales (relaxed, alert, jittery, tired, tense, headache and overall mood).
  • Change in Mood using Bond Lader Visual Analogue Scales [ Time Frame: Change from baseline 45 minutes post dose and at 90 minutes post dose. ]
    This widely used set of 16 100 mm VASs yields three extensively validated factor scores: alertness, calmness and contentment.
Original Secondary Outcome Measures  ICMJE
 (submitted: July 3, 2019)
  • Change in Caffeine consumption using caffeine consumption questionnaire [ Time Frame: Change form Baseline for each visit only ]
    A paper based questionnaire developed by Erika Bühler et al., 2014. At the screening visit and on each study day participants will be asked to complete the table in order to build a picture of their individual caffeine habits
  • Caffeine research Visual Analogue Scales [ Time Frame: Change from baseline 45 minutes post dose and at 90 minutes post dose. ]
    A caffeine research Visual Analogue Scales which comprises of 7 scales (relaxed, alert, jittery, tired, tense, headache and overall mood).
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Effect of Date Seeds Coffee on Mood and Cognitive Performance
Official Title  ICMJE Investigating the Acute Effects of Mood and Cognitive Performance Following the Administration of a Coffee Made of Date Seeds on Healthy Young Volunteers.
Brief Summary Limited utilizations of date seeds have previously been explored, and so previously wastage has often been the normality. However, research now indicates that several fruit seeds contain higher concentrations of beneficial total phytochemicals within their seeds in comparison to the flesh. As well as high nutritional values of date seeds for fibre, protein and micronutrients, this increased phytochemical content has been proven to be true for date seeds, with mainly phenolic acids (24.6 g k GAE) 3 and total flavonoids (3.67 g k RE). With the seeds presently being used to produce new coffee products, it raises questions on whether consumption of date seeds can alter mood and cognitive behaviour and therefore research into investigate the acute effect of date seeds coffee on mood and cognitive function on healthy young volunteers. However, to the best of the research team knowledge, this is the first human trial to investigate these effects.
Detailed Description

Introduction

Seeds of the date palm (P. dactylifera) are a very rich source of bioactive compounds, thus constituting strong candidates for functional food additives and nutraceuticals. Many promising results were observed when the effect of date flesh and seeds consumption have been studied in animals, for their role as either a protective1 against neurodegenerative 2,4,5 diseases, or as a cure for it 2. Most of the observed effects were attributed to the antioxidant and anti-inflammatory properties in dates flesh and seeds fruit due to it high content of phenolic compounds 3.

Rational For years, date seeds were considered a waste, having no other uses except for feeding animals. However, as has already been demonstrated in other fruits and corresponding seeds, total phytochemical content of the date seeds was higher than in the edible flesh9. Date seeds have also been shown to have an excellent nutritional quality due to high amounts of fibre (676-742 g/kg) 3 depending on variety, considerable amounts of minerals, vitamins, lipids and protein. Additionally, date seeds were shown to be rich in antioxidants containing mainly phenolic acids (24.6 g k Gallic Acid equivalent) 3 and total flavonoids (3.67 g k Rutin Equivalent).

Nowadays, and on sight of the aforementioned findings, date seeds are used to make a new coffee product. This ''coffee alternative'' is commercially available and is becoming more popular.

Although, many studies have demonstrated that date seeds possess high antioxidant activities, due to their high content of flavonoids and phenolic compounds, no human trial has investigated the effect of the consumption of date seeds on humans and especially on mood and cognitive behaviour. Therefore, this study, for the first time, to the best of the research team knowledge will investigate the acute effect of date seeds coffee on mood and cognitive function on healthy young volunteers.

Aim The aim of this study is to investigate the acute effects of a coffee made of date seeds on mood and cognitive performance.

Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Condition  ICMJE Health Status
Intervention  ICMJE
  • Dietary Supplement: Date coffee
    45 g of date seeds coffee in 280 ml of water
  • Dietary Supplement: Normal coffee
    6 g of normal coffee in 280ml of water
  • Dietary Supplement: Placebo
    water, food colouring and coffee flavouring
Study Arms  ICMJE
  • Experimental: Date seeds filtered coffee
    Each participant will consume this arm in a visit has been allocated by Latin Square randomisation order: 45 g of date seeds coffee in 280 ml of boiled water, coffee flavour and brown food colouring ( made using a filter coffee machine). it will be served in a paper cup with lid
    Intervention: Dietary Supplement: Date coffee
  • Experimental: Normal filtered coffee
    Each participant will consume this arm in a visit has been allocated by Latin Square randomisation order: 6 g of coffee in 280 ml of boiled water (made using a filter coffee machine) it will be served in a paper cup with lid
    Intervention: Dietary Supplement: Normal coffee
  • Placebo Comparator: Placebo
    Each participant will consume this arm in a visit has been allocated by Latin Square randomisation order: 280 of boiled water, coffee flavour and brown food colouring it will be served in a paper cup with lid
    Intervention: Dietary Supplement: Placebo
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Actual Enrollment  ICMJE
 (submitted: August 28, 2020)
52
Original Estimated Enrollment  ICMJE
 (submitted: July 3, 2019)
44
Actual Study Completion Date  ICMJE March 30, 2020
Actual Primary Completion Date March 7, 2020   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

Healthy young volunteers age between 18 to 35

Exclusion Criteria:

Participants will be ineligible to participate in the study if any of the following apply:

  1. Have a BMI above 35kg/m2
  2. Smokers or tobacco product consumers which includes electronic cigarettes
  3. Are taking any illicit or prescribed drugs.
  4. Have a history of, or currently, abuse alcohol
  5. Have a history of dyslexia, ADHD, learning difficulties or colour blindness,
  6. Females who are pregnant, lactating or seeking to become pregnant, or are at risk of pregnancy as they to do not use birth control measures
  7. Have allergies to any food product.
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years to 35 Years   (Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United Kingdom
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT04009564
Other Study ID Numbers  ICMJE DSCPM
Has Data Monitoring Committee Not Provided
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: Undecided
Responsible Party Newcastle University
Study Sponsor  ICMJE Newcastle University
Collaborators  ICMJE Not Provided
Investigators  ICMJE Not Provided
PRS Account Newcastle University
Verification Date July 2019

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP