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Lecture

FSHN 125 Lecture Notes - Solanine, Arsenic, Natural Foods

3 pages19 viewsFall 2012

Department
Food Sci+Human Nutrition
Course Code
FSHN 125
Professor
John Avens

Page:
of 3
30 August
Learning Exercise #7
To label foods “Natural” it is legally required that the foods:
A. Are not changed by processing after agricultural production and harvest
B. May not contain synthetic or artificial ingredients
C. May not be more than “minimally processed”
D. A and B only
E. B and C only
What do the words “natural”, “healthy”, “organic” on a food label mean?
“Natural” foods – implied:
Are not changed by processing after agricultural production and harvest?
May not contain synthetic or artificial ingredients*
May not be more than “minimally processed”??
*Only legal requirement for labeling foods natural
All organic fertilizers, including:
Animal manure
Plant compost
Rock phosphate
Must break down into inorganic chemical molecules before they can be used by
growing plants
Both: natural “organic chemical” fertilizers and synthetic “inorganic chemical” fertilizers contain:
Nitrogen, potassium, & phosphate
Needed by growing plants
These inorganic chemicals are identical whether from synthetic or natural sources
The growing plant cant tell the difference and foods produced by both types of fertilizer are
nutritionally healthy and safe to eat.
Learning Exercise #8
The inorganic chemicals, nitrogen, potassium, and phosphate are:
A. Needed by growing plants
B. Supplied by natural organic fertilizers
C. Supplied by synthetic inorganic fertilizers
D. A and C only
E. A, B, and C
An “organically” grown potato, a rather simple “natural food”, contains 150 different chemicals
which have been identified:
Solanine
Oxalic acid
Arsenic
Tannins
Nitrates
Many others of no nutritional value
Many of these natural chemicals are carcinogenic and/or toxic poisons that FDA would
recommend BANNING IF they were ADDED BY HUMANS, BUT they are NOT
Learning Exercise #9
Assuming enough fertilizer is provided, “organically grown” food and “conventionally
grown” food (using synthetic chemical fertilizers) are both nutritionally healthy and safe
to eat.
A. True
B. False
The quantities of toxic (poison) or carcinogenic natural” chemicals in food we consume per
capita per year are very large compared to synthetic “food additives” added by humans.
Learning Exercise #10
Normal, naturally occurring chemicals, not added by humans, in food plants and
animals:
A. Can be highly toxic poisons
B. Are dangerous to humans eating normal amounts
C. Are present in relatively larger amounts than chemicals added by humans
D. A and C only
E. None of the above

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