TITLE
DNA-SHAPES & sensory profiling of novel proteins sources
SHORT PROJECT DESCRIPTION
1$0($1'326,7,21
Niki Alexi
Research assistant position
START/END DATE
(MAX. 200 WORDS IN TOTAL)
5/1/18 12/31/18
,17(51$7,21$/&2//$%25$7,212567$<$%52$'
5(/$7('727+(352-(&7
Not applicable
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https://dca.au.dk/aktuelt/nyheder/vis/artikel/dna-mole
kyler-skal-bruges-til-at-efterligne-vores-smagssans/;
Poster presentation in Eurosense 2020 attached
below
A comparison of
projective mapping and
pivot profile with
descriptive analysis in the
sensory characterization
of sustainable protein
sources
Descriptive analysis & Pivot Profile
METHODOLOGICAL
APPROACH
gave similar profiles, while
Projective Mapping differed.
PRESENTER:
Niki Alexi
BACKGROUND:
Profiling the sensory characteristics of sustainable
protein sources is crucial for new product
development. The current study explored Pivot
Profile (PP) -a reference based method, allowing
profiling of products over time- and Projective
Mapping (PM) -a fast sensory method, not
requiring prior vocabulary development- for their
applicability in these product sets, when
compared to Descriptive Analysis (DA).
Non-Cognitive
Cognitive
ogg
Predictors of Student Success:
A Predictive
International
dictive
ct Validity Comparison Between Domestic a
and Internati
onal Students
SAMPLES
8 protein sources profiled.
Beef & Pork collagen protein (3% w/v)
Whey isolate & Whey concentrate
protein (5% w/v)
Pea, Hemp & Rice protein (5% w/v)
Buffalo worm meal (Insect) (5% w/v)
Dilutions were filtrated (Mesh 240 mm) Æ Served
in black beakers with lid, portion 20 ml
RESULTS
Sample groupings
Plant derived proteins
Dairy by-products
Animal tissue by-products
Similarities/ differences according to Multiple
factor analyses btw. methods
DA VS. PP Æ RV: 0.94
DA VS. PM Æ RV : 0.74
PP VS. PM Æ RV: 0.71
N. Alexi*, L. A. Mielby & D.V. Byrne
Food Quality Perception and Society Team,
iSense Lab, Department of Food Science,
Aarhus University, Denmark
DNA-shapes aims to obtain molecular based
definitions of complex mixtures of ingredients in food
& correlate those to the human senses. Before the
CiFood Project, DNA-shapes was used for validating
sensory fingerprints of beer samples. However,
limitations related both to the physical characteristics
(carbonation-low protein content) & the low number
of samples profiled via sensory descriptive analysis,
(higher numbers required for validation), arisen.
To overcome the issues, by profiling with a novel
sensory reference based method (Pivot profile)
product matrices considered more appropriate for
the DNA-shapes analyses (concentrates/ isolates
from sustainable protein sources).
The results indicated that A) Pivot profile provided
very similar sample configurations to the sensory
benchmark method descriptive analysis (RV: 0.94)
and therefore it become a solution to add samples
over-time and therefore to increase the data-set
variance and identification of noise. B) The sensory
map of the sustainable protein sources indicated a
clustering according to the type of protein source
(Plant based VS. Dairy VS. Animal based).
This results can be to validate the DNA-shapes
profiling approach, which if valid can be used as a
rapid R&D tool for ingredients used in new product
development of sustainable high protein products.
PICTURE RELATED TO THE PROJECT
352-(&73$57,&,3$17 6 1$0($1'$)),/,$7,21 6
Niki Alexi & Derek V. Byrne. FQS group, AU-FOOD
department
Daniel Miotto Dupont & Jørgen Kjems, Interdisciplinart
Nanoscience Center, INANO
08/7,',6&,3/,1$5<&+$5$&7(52)7+(352-(&7
3/($6('(),1($5($6
Scientific areas: nanoscience, sensory science
/2*2 6 2)352-(&73$57,&,3$17 6
1(;767(363/($6(,1',&$7(352-(&7352326$/6
$&7,9,7,(6*(1(5$7(')5207+()81',1*
Awaiting for the analyses of the protein samples with the
apta-shapes approach from iNano
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