Valuing Food Attributes: Experimental Auctions and Sensory Analysis
Ch 1 Food Sensory Student2015
Transcript of Ch 1 Food Sensory Student2015
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Chapter 1
Food Choices andSensory Characteristics
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W at A ects Your MeaPattern and Pattern o
Eating? Breakfast
Typical breakfast foods
Why you choose those foods
Time you eat breakfast
Where to you generally eat breakfast?
Do you eat alone or with someone? Lunch and supper
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Factors Afecting Patterns
o Eating Taste: Foods must
be palatable or
have appetiteappeal
Family ! Friends:
The familystructure andinteractionsin"uence the
development of our
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Factors Afecting Patterns o
Eating in the 21st Century
Time restraints.
Seventy percent of women with children under 18 workoutside the home.
Family extracurricular activities.
Meals purchased outside the home account for 49 of
total food expenditures. !e"ular shared meals are declinin". #owever$ 8% of the
time$ &mericans eat dinner at home.
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Factors Afecting Patterns oEating
'ultural (ack"round) The culture in which wedevelop influences our food ha*its.
!eli"ious (eliefs) Some reli"ions have food lawswhich permit or for*id the consumption of
certain foods+ ,ashruth are the ----- dietary lawso*served *y those of the ewish faith. #alal are
the ------ dietary laws.
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http)//www.internationalfoodshop.com/
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eligious!Cultural"elies #hristians: $o speci%c
#atholics: $o meat on Friday especiallyduring Lent
&udaism: '''''''''''''()arva* +ashruth: Dietary laws
$o blood,certain way to butcher animals
-ilk and meat kept separate )ork and shell%sh prohibited
.pply to ingredients used in processed foods
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eligious!Cultural"elies
/slam: 0et food laws for '''''''''' )ork and all their by,products
/nto1icants,.lcohol2
Birds of prey and land animals without ears(snakes*
.nimals killed in a manner that all blood isdrained
3induism 4sually vegetarian
$o cows (sacred* and recommend no pork
Fish or meat must be sancti%ed
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eligious!Cultural"elies
5egetarianism /n 40 about 67 are vegetarian
5egan
Lacto,ovo
)esco
Buddhists,(a way of living* advocate vegetarianism out of kindness
0eventh,Day .dventist 8ecommend vegetarianism
$o alcohol or other into1icants (advocate noca9eine*
ver all similar to Dietary ;uidelines
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#utrition and $ealth
The $ational 3ealth and $utrition<1amination 0urvey ($3.$<0*http:==wwwcdcgov=nchs=nhaneshtm
Dietary ;uidelines for .mericans http:==wwwhealthgov=dietaryguideline
s=dga>@=Dietary;uidelines>@pdf http:==wwwchoosemyplategov=
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$ealthy %iet 3ealth concerns A 3ealth )eople >>2
$ational 3ealth )romotion and Disease
)revention obectives2 o9ersguidelines to help .mericanslive healthier lives
http:==wwwhealthypeoplegov=>>=.bout,3ealthy,)eople
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Factors Afecting Patternso Eating
'ost 0 low income families 21%$%%%314$999 spend 56of their income on food.
&vera"e household family 9
Food insecurity) 7n 5%15$ 14.6 of S households http)//www.ers.usda."ov/topics/food3nutrition3assistance/
food3security3in3the3us/definitions3of3food3security.aspx.:&(;Svld<%d
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The word =hun"er$> refers to apotential conse?uence of foodinsecurity that$ *ecause of prolon"ed$involuntary lack of food$ results indiscomfort$ illness$ weakness$ or painthat "oes *eyond the usual uneasysensation.=
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&echnological%e'elop(ent
&septic packa"in"
7rradiation
Sous vide (iotechnolo"y
@enetic en"ineerin"
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http)!!landing*e+po2,1-*org!en!glo.al/nutrition/e'ent*ht(l?gclid0CPuPr#rcYCFYdFa3odi,4C3
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Sensory Characteristics o
Food &ppearance
Taste and Taste *uds
Sweet$ Sour$ (itter$ Salty$ mami savory
Temperature 'ompare
Temperature has an impact on flavor perception
Ador Flavor) (lendin" of taste and odor
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&e+ture Tactile2 mouthfeel
Tingle with carbonated beverages
Terms: smoothness2 stickiness2
graininess2 brittleness2 %brous2 lumpy2tingling2 dry2 moist2 solid2 "uid2 thick2thin2 rough2 smooth2 course2 %ne2 tough2
tender2 hard2 soft2 compact2 porous ;enerally dislike: tough2 soggy2
crumbly2 lumpy2 watery2 slimy (kra*
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Sensory Characteristics o
Food ------) #ydrocyl 3A# "roup
------) 7on compounds of salt
------) #ydro"en ions #B found in acids
------) Cum*er of compounds ex) coffee
Theo*romine is the primary alkaloid found in cocoa and chocolate which is
a natural source of theo*romine.
mami) &mino acids$ MS@
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Fla'ors and the tongue .ll tastes can be perceived eCually well
everywhere on the tongue /t use to bethought that there were speci%c onesfor sweet2 sour2 salty and bitter But thishas been proven to be incorrect
http:==wwwncbinlmnihgov=pubmedhealth=)-3EE@=
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&ypes o Fla'ors )recursors: non,"avors activated by
cooking 8aw meat vs cooked meat Geast Fermentation (bread* <nymatic 8eactions (cheese "avors* 0ynthetic #ompounds (added "avors*
<1ample: > compounds to make banana"avor
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Sensory Analysis
To Dud"e or evaluate food *y the senses)
Si"ht appearance
Smell aroma
Touch texture
Taste flavor#earin" sounds
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For(al Sensory E'aluation
Trained Sensory Eanels
Focus @roups
Erovides information *eyond
like/dislike
'ompare opinions ofevaluators
@enerate data to *etter understand
the perceived food ?uality
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For(s o Sensory
E'aluation #edonic Scale
ike extremely well to dislike extremely
The #edonic Scale for children uses happy and sad faces
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5.6ecti'e E'aluation oFood
a*oratory 7nstruments
Measure:
:iscosity thickness of consistency
Firmness of "el
'olor
'ompressi*ility *read forexample
Shear tenderness of meat