Презентация на английском языке по теме: "Instant coffee"
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pptx
английский язык
7 кл
21.01.2017
Презентация на английском языке по теме: "Instant coffee". Проект учащихся 7 класса.
Advantages of instant coffee include speed of preparation (instant coffee dissolves instantly in hot water), lower shipping weight and volume than beans or ground coffee (to prepare the same amount of beverage), and long shelf life—though instant coffee can also spoil if not kept dry.Презентация на английском языке по теме: "Instant coffee"
Instant coffee, also called soluble coffee and.pptx
Презентация на английском языке по теме: "Instant coffee"
Instant coffee.
Instant coffee, also called soluble coffee and coffee powder, is a beverage derived from brewed coffee
beans. Instant coffee is commercially prepared by either Freeze-drying or spray drying, after
which it can be rehydrated. At least one brand of instant coffee is also available
in concentrated liquid form.
Презентация на английском языке по теме: "Instant coffee"
• Advantages of instant coffee include speed of preparation
(instant coffee dissolves instantly in hot water), lower
shipping weight and volume than beans or ground coffee
(to prepare the same amount of beverage), and long shelf
life—though instant coffee can also spoil if not kept dry.
Презентация на английском языке по теме: "Instant coffee"
History…
•
Instant coffee was invented in 1901 by Satori Kato, a
Japanese scientist working in Chicago. Kato introduced
the powdered substance in Buffalo, New York, at the Pan-
American Exposition.[1] George Constant Louis
Washington developed his own instant coffee process
shortly thereafter, and first marketed it commercially
(1910). The Nescafé brand, which introduced a more
advanced coffee refining process, was launched in 1938.
Презентация на английском языке по теме: "Instant coffee"
• High-vacuum freeze-dried coffee was developed shortly
after World War II, as an indirect result of wartime
research into other areas. The National Research Corp.
was formed in Massachusetts as a process-development
company employing high-vacuum technology. It
developed high-vacuum processes to produce penicillin,
blood plasma and streptomycin for US military use. As
the war ended, NRC looked to adapt its processes for
peacetime uses. It formed Florida Foods Corp. to produce
concentrated orange juice powder, and originally sold its
product to the United States Army.That company later
changed its name to Minute Maid.
Презентация на английском языке по теме: "Instant coffee"
Use.
• One advantage of instant coffee is its simplicity of preparation. It is
virtually impossible to spoil the product accidentally during the rehydration
process, and simple instructions are printed on the back of typical instant-
coffee packaging.
•
•
•
Instant coffee is available in powder or granulated form contained in glass
jars, sachets or tins. The user controls the strength of the resulting product,
by adding more or less water (for a weaker or stronger brew).
Instant coffee is also convenient for preparing iced coffee like the Greek
frappé, which is popular in warmer climates and hot seasons.
In some countries such as Spain and India, instant coffee is commonly
mixed with hot milk instead of boiling water.
Презентация на английском языке по теме: "Instant coffee"
Production.
•
•
•
As with regular coffee, the green coffee bean itself is first roasted to bring out flavour and
aroma. Rotating cylinders containing the green beans and hot combustion gases are used in
most roasting plants. When the bean temperature reaches 165 °C the roasting begins,
accompanied by a popping sound similar to that produced by popcorn. These batch cylinders
take about 8–15 minutes to complete roasting with about 25-75% efficiency. Coffee roasting
using a fluidized bed only takes from thirty seconds to four minutes, and it operates at lower
temperatures which allows greater retention of the coffee bean aroma and flavor.
The beans are then ground finely. Grinding reduces the beans to 0.5–1.1-millimetre (0.020–
0.043 in) pieces in order to allow the coffee to be put in solution with water for the drying
stage. Sets of scored rollers designed to crush rather than cut the bean are used.
Once roasted and ground, the coffee is dissolved in water. This stage is called extraction.
Water is added in 5-10 percolation columns at temperatures of 155 to 180 °C; this
concentrates the coffee solution to about 15-30% coffee by mass. This may be further
concentrated before the drying process begins by either vacuum evaporation or freeze
concentration.
Презентация на английском языке по теме: "Instant coffee"
Презентация на английском языке по теме: "Instant coffee"
Презентация на английском языке по теме: "Instant coffee"
Презентация на английском языке по теме: "Instant coffee"
Презентация на английском языке по теме: "Instant coffee"
Презентация на английском языке по теме: "Instant coffee"
Презентация на английском языке по теме: "Instant coffee"
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