Instant CoffeeLauren Shermer

& Genevieve Day

Instant Coffee• Derived from brewed coffee beans• The Japanese were the first to

produce a stable instant coffee product in the early 1900s

• During World War II, instant coffee gained fame among American soldiers after Nestlé marketed its Nescafé brand

• Can also be used as a homemade black and white photograph developer

Freeze Drying Process1. Coffee beans are roasted and then brewed in hot

water 2. Oxygen and insoluble particles such as coffee

grounds are removed3. Next, the coffee is sits and the water evaporates

naturally leaving a concentrated coffee solution. 4. This concentrate is then frozen to around 69.4

degrees Fahrenheit. 5. The remaining water freezes into ice crystals.

Sublimation is used to remove the ice6. What's left is dry granules of instant coffee.• Because of this process, instant coffee has a longer

shelf life compared to freshly ground coffee beans

Decaffeination Process • Coffee beans are still in

green state• The decaffeination

process occurs prior to freeze drying or spray drying

• Removes 97% to 99% of caffeine

• Coffee must contain 3% of caffeine or less to be classified as decaffeinated

• It is impossible to create a coffee that is100% caffeine free

Elements Found in Instant Coffee

• Various elements are found in different types of raw coffee beans.

• Different elements and compounds produce different blends and strengths of coffee

• In many blends of instant coffee the following elements are present:o Carbono Hydrogeno Oxygeno Nitrogeno Potassiumo Lead

Compounds found in Coffee

• There are over 200 chemical compounds found in raw coffee beans including

• Caffeine• Arcylamide• 4-Methylimidazole • 4-(4-hydroxyphenyl)-2-

butanoneo Gives coffee a sweet and

fruity aroma

Caffeine • Caffeine is one of coffees

major components, there is about 57 mg per 8oz. cup of instant coffee.

• There is less caffeine in instant coffee than in brewed coffee

• Molecular Formula: C8H10N4O2

Caffeine is composed of the following elements:• Nitrogen• Carbon• Hydrogen• Oxygen

4 Nitrogen8 Carbon10 Hydrogen2 Oxygen

Also found in…

Carcinogenic Ingredients

Some blends of coffee may contain small amounts of compounds

identified as carcinogens by the US National Toxicology Program,

including• Acrylamide

• 4-methylimidazole

Arcylamide• Acrylamide is a known lethal

neurotoxin• Used as binding, or thickening

agents ino Grouto Cement o Sewage treatmento Pesticide formulationso Cosmeticso Sugar manufacturingo Food packaging and plastic

products• Acrylamide levels appear to

rise as food is heated for longer periods of time

• Molecular Formula: C3H5NO

3 Carbon5 HydrogenNitrogenOxygen

Also found in…

4-Methylimidazole • Molecular

Formula: C4H6N2

• Used for caramel coloring

• Composed of the following elements:

• Nitrogen• Hydrogen• Carbon

NitrogenCarbonHydrogen

Also found in…