11 rue Flashcards

1
Q

free run vs free range

A

free run: runs in enclosed area
free range: can run in a barn or outdoors

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2
Q

nutrition of eggs

A

have the highst PER protein efficiency ratio
13 essential vit / min: ribofalvin, selenium
lutein / zeasanthin (antiox for eye heatlh)

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3
Q

albumen (egg yt) is composed of…..

A
  1. ovalbumin: contributes to foaming
  2. ovomucin: contributes to stable egg yt, viscious egg gel
  3. lysozone, an antimicrobial E: part of innate immune syst

thermally stable up to 74C

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4
Q

lipids in the yolk are: ___ / phospholipids / ____

A

trig / choles
some eggs have omg3 bcs the chicken are fed fish oil & flax seed

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5
Q

does egg concern heart health?

A

egg is rich in satfat, which could < choles =/ as food high in choles
LOOK @ ENTIRE DET- eat in moderation

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6
Q

how to know if egg is fresh?

which color?

A

when broken, still round due to thick portion of egg yt
cloudy or milk yt due to dissolved CO2 after laying

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7
Q

sign of aging

A
  • thinner yt & flatter yolk
  • weaker chalaze so yolk not in the centre
  • larger aiir cell, more basic
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8
Q

in terms of flavour & odour, doesnt depend on chicken/ feed / storage. T or F?

A

F

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9
Q

what to notice abt egg’s flavour & odour?

A
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10
Q

candling
assess via quality of shell / ___ / ___ __
bt now we sue mass scanner!

A

= to hold the eggg in dark room w/ storage light to gauge quality
see shell’s quality, size of air bubble, blood spots & molk

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11
Q

grade Canada A of egg

A

for grocery store
- undistinct, round, & centred yolk w. FIRM albumen
- uncracked shell w/ less than 3 stain spots

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12
Q

grade Canada C of egg

A

for processed food
- distinct yolk outline w/ blood spots 3mm
- cracked shell w/ stain spots BT no leak

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12
Q

grade Canada B of egg

floats freely

A

for commercial baking
- oblong yolk that floats freely when twirled
- UNcracked shell w. stain spots

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13
Q

Salmonella contamination: how? what to do?
heat to ___C; chill to __ __ ___ & cool rapidly after ___

inside & egg’s exterior: laying stage

A

how? comes from infected intestinal tract of hem OR contam on egg’s exterior -> shgell pores -> inside
when it’s inside the egg, the bacteria count is low in layign stage bt INCREASE ra[pidly @ warm temp

74C / slow growth potential / laying

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14
Q

shell egg pasteurisation: radio frequency (RF) waves

what’s the good thing

A
  • patented,kil Salmonella & Ecoli
  • via hot water & RF
  • fast & cheap, bt new & unavailable in canada
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15
Q

shell egg pasteurisation: HOT WATER immersion, microwave & radiation

how it affects the protein?

A

longer, $$$
potentially denat & coagulate protein l less whipping ability

16
Q

1 good thing abt frozen egg & 1 bad

A

functional properti still intact!
however, it’s viscous & gummy when thawed
=> add salt, sugar & syrup before freezing.

17
Q

why should we use dried egg?

A

has alonger shelf life
for dry mix- cake: remove glucose to prevent the enzymatic browning a& keep color

18
Q

why should we uyse pasteurised egg?

machine

A

w/ automatic egg breaking machine, spearate yt, yolk & whole- filtered & chill
FREE OF salmonella & egg contam

19
Q

store in commercial cold storage….

A

abt 0C, just above the freezing point, humidity (85-90%)
PROPER CIRCULATION’d prevent the smell transfer
maintain eggs’ quality up to 6 months

20
Q

how does egg turn green?

A

bcs of overheating and overcooking
=> SH -> ferrous sulfide
bt not a safety concern

21
Q

shell egg pasteurisation: HHP & HPP

A

HHP = High Hydrostatic P
HPP = Hydrostatic P Processing
- rid of pathogen extend shelf line
- bt no longer considered a novel tech

22
Q

in canada must we pasteurise our egg?

A

NO - bt if it does, mushier and less fluffy

23
Q

what is coagulation by mechanical beating?

S-S

A

protein unfold to surround the aircell as viscoelastic film
protein absorb @ hydrophobic surgace of air bubble
=> disulfide bond forms

24
Q

fators of heat coagulation: shgar, salt & acid

A

sugar promotes heat sability of protein
salt promotes coagulation
acid lowers the coagulation temp

25
Q

factors that improve egg foam: pasterurised, thick, room temp

A

pasteurised & spary dried: partally unfold the protein
thick yt, thick foams
room temp egg yts lower the surface tension @ air-H20 interface

26
Q

factors that improve egg foam: fine wire beater, mixer, hand

A

creates smaller air cell
for mix, use a small round-bottom nonwl w/ sloping sides
w/ hands, large & wide bowl

27
Q

2 factors that decrease egg foam:
loose that flexibility in ___ film, broke __ cells

A
  1. yolk contam: due to liporprotein
  2. overbeating: viscoelastic / air
    brittle & inelastic
    liquid separate from the foam
28
Q

sugar affect egg foam; stabilise foam, > overbeating
_____

add slowly after FOAM is created bt ___ peake returns

A

creates this shiny glossy txture
soft

29
Q

why is the egg turn green?

A

due to overheating or overcooking
in yolk , h sulfide turns into ferrous sulfide
bt not a safety concern

30
Q

egg hsa a waxy coating that prrotects it called _____

A

cuticle. bloom
=> washed off during mass produc
=> apply a mineral oil coating

31
Q

bcs (fact), a fresh egg would sink/dont sink in a cup of water

A

air cell < as egg ages,