What is food?
-can be seen as a mixture of different chemical compounds which are responsible for
-source of nutrients: vital H y for growth and maintenance of the body
supply energy, building materials to body
1) Social linkages: celebrations, festivities, food sharing, etc
2) Social distinctions, status symbol (social class marker):
-The color of bread consumed indicated the social status of a person (white bread was higher quality than whole bread)
-food can be used as a sign of refinement sophistication c
3) National identity (ethnic: Japan-sushi, Scotland-haggis)
4) Moral, religious significance
What is food made of?
supply energy, calories
And minor components (pigments, flavor compounds,etc)
Chewing gum (p662)
Gun base – manikara tree
Xylitol (a sugar substitute) protect teeth
less cariogenic c
E. Coli Bacteria
Nestle cookie dough
Escherichia coli, carried in feces (human/animal), can spread from contaminated food and water, from items touched by
people who didn’t wash hands
**If you make cookies from scratch, it is NOT safe to eat the raw dough
gelatin strength your nail? (p608)
Gelatin is a protein comes from animals: pigskin, cattle skins and bones, fish gelatin.
**There is no evidence that gelatin strengthens nails and hair.
Why do onions make you cry? (p311)
When cutting onions, a
lacrimatory factor is produced, (lacrima tear c
); it is a volatile c
substance; it irritate c
the eyes; tears are produced to dilute and flush out the irritant.
Green potato are poisonous h
This one is no myth: contain bitter toxins, such as
solanine, which accumulates when potatos are exposed to light.
How to prevent? Store potatoes in a dry and dark cool place
**DO NOT feed honey to infants less than one year of age!!
Honey bees collect
, pick up
, may also carry spores c
of the bacterium (clostridium botulinum
Does the color of the eggshell affect the nutrition of egg? (p75)
Eggshell color depends on kinds of chicken (
Yolk color is influenced by the diet of the chicken caroteniod pigments (
What makes popcorn pop? (p479)
During heating, moisture c
inside the kernel c
is converted into steam creating pressure. Pressure build up until the
kernel pops exposing it’s puffed up content.