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Lecture 18

CHEM 1100 Lecture Notes - Lecture 18: Acesulfame Potassium, Neotame, Carboxylic AcidPremium

2 pages103 viewsFall 2017

Department
Chemistry
Course Code
CHEM 1100
Professor
Brian Ganley
Lecture
18

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Sweetness Scale
Fructose
Sucrose
Honey
Glucose
Maltose
Lactose
173
100
97
74.3
32.5
16
There is concern about the health impacts of the ant of sweeteners/sugars ppl consume
per day
Artificial sweeteners:
o Acesulfame potassium
o Aspartame
o Neotame
o Saccharin
o Sucralose
Food Label Requirements
FDA: must clearly identify added sugars, trans fats, and other minerals
Protein
Structural
Living cell requirements
C, H, N, O, usually S
Some DO perform chemical reactions
o Called enzymes
o Catalysts: lower activation energy of reaction
Amino acid polymers
o 2 functional groups:
Carboxylic acid (-COOH)
Amine (-NH2)
o Attached to a hydrogen and an R group (side chain)
R can be 20 diff things!!
Process
o Polymer forms: 2 amino acids link together via peptide bond = amide
CONDENSATION POLYMER
o Process repeats itself over and over until peptide chain is formed
o Once incorporated into the peptide chain, the amino acids are known as amino
acid residues
Essential Amino Acids
o Protein formed depends on
Amino acids present
Sequence of amino acid residue in peptide
o Food needs to be ingested regularly to replenish the proteins in body that are
constantly broken down and reconstructed
o Some amino acids can’t be synthesized by humans, so must ingest them in our
diets (essential amino acids)
Vitamins
Organic nutrients (contains Carbon)
Not carbs, proteins, or fats
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