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CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
1
FEEL THIRSTY....?
LETS HAVE A CUP OF TEA
TEA
PROCESSI
NGPasan Chinthana BandaraRajitha Nuwan Ariyaratne
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
2
Tea processing in Sri Lanka
• Tea was introduced to Sri Lanka in
19th century by Sir James Tailor.
• It is the 2nd largest agro processing industry in Sri Lanka.
• One of the Sri Lankan identity in international market.
[Sri Lanka is the 3rd largest tea exporter in the world]
• Sri Lanka is famous for good quality black tea.
• In here we have a better climate for tea growing.
[long cool day period, geographical conditions]
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
3
Tea growing regions in Sri Lanka
South
Kandy
Nuwaraeliya
Uva
Dimbula
Udu pussallawa
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
4
Tea planting
• Tea plants need some
special environmental
conditions.
• Need a continuous
maintenance.
• Labor management is
very important.
• TRI have invented new clones of tea with different qualities.
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
5
Tea plucking
• Is done on a cycle of 4-14 days.
• Mostly women involve in this step.
• For a better production it is
recommended to pluck
• Plucked tea are taken to tea
factories
• Factory takes a leaf count.
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
6
“bud and two leaves”
Tea factory layout
GREEN
LEAVES
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
7
Withering [;õueÍu]
• Removing moisture content in tea
leaves with blowing controlled air.
• Physically tea leaves become rubbery.
• Chemically,
• Increase of Amino Acids
• Increase of flavor compounds
• Increase of caffeine content.
• Increase of cell wall permeability
• Normally withering takes 8-10 hours
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
8
Rolling and Fermentation
• Done to mix up chemical compounds & enzymes.
• In orthodox method pressure rollers are used.
• Normally have 4, 5 steps of rolling, connected with roll
breaking.
• Separated rolled leaves are called “dhools”
[they are named as 1st dhool, 2nd dhool big bulk]
• Rolled leaves are fermented until they gain their color
and smell.
• Fermentation mean oxidation of polyphenols and here
Thearubigins & Theaflevins are formed.
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
9
Drying
• Drying with hot air.
• Done to stop enzyme
activities.
• Tea gains it’s black color.
• Tea is no longer alive after
drying.
• Mainly used dryer types,
Endless chain dryer
Vibro fluid bed dryer
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
10
Sifting, Grading And Packing
• Cleaning tea using various methods.
Fiber extractor
3T stalk extractor
michie sifter
chota
Middleton
Winnower
Color separator
• Grading of fired tea according to their
Particle size and shape
Evenness
Heaviness
• Pack into paper sacks
• Send them to auction
organized by the tea
board
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
11
Tea grades
• Silver tips
• Pekoe
• Broken orange pekoe(BOP)
• Flowery broken orange pekoe(FBOP)
• Flowery broken orange pekoe
fanning(FBOPF/FF)
• Orange pekoe(OP)
• Broken pekoe(BP)
• Dust
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
12
Refuse Tea
• Refuse tea is a part of tea which we cannot take for drinking.
• It contents a large amount of fibers and a small amount of black
tea.
• Normally 10-12% of refused tea is gained on made tea basis.
• Most of the large factories sell them to small factories and they
process them further and extract small % of black tea.
• Good quality leaves reduces the refuse tea percentage.
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
13
Future of Tea Processing
Product
• Invention of the tea bags was
done by Indians.
• Tea cordial making.
Process
• Using of New technical
methods[VSD, CTC]
Industry
• Tea industry is in a great trouble.
• Less of labor.
• Political issues.
• Old thinking people in front seats.
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
14
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY
15
THANK YOU
AND
ENJOY YOUR
CUP OF TEA
CP 503 - INDUSTRIAL PROCESS
TECHNOLOGY

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Tea making

  • 1. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 1 FEEL THIRSTY....? LETS HAVE A CUP OF TEA
  • 2. TEA PROCESSI NGPasan Chinthana BandaraRajitha Nuwan Ariyaratne CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 2
  • 3. Tea processing in Sri Lanka • Tea was introduced to Sri Lanka in 19th century by Sir James Tailor. • It is the 2nd largest agro processing industry in Sri Lanka. • One of the Sri Lankan identity in international market. [Sri Lanka is the 3rd largest tea exporter in the world] • Sri Lanka is famous for good quality black tea. • In here we have a better climate for tea growing. [long cool day period, geographical conditions] CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 3
  • 4. Tea growing regions in Sri Lanka South Kandy Nuwaraeliya Uva Dimbula Udu pussallawa CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 4
  • 5. Tea planting • Tea plants need some special environmental conditions. • Need a continuous maintenance. • Labor management is very important. • TRI have invented new clones of tea with different qualities. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 5
  • 6. Tea plucking • Is done on a cycle of 4-14 days. • Mostly women involve in this step. • For a better production it is recommended to pluck • Plucked tea are taken to tea factories • Factory takes a leaf count. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 6 “bud and two leaves”
  • 7. Tea factory layout GREEN LEAVES CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 7
  • 8. Withering [;õueÍu] • Removing moisture content in tea leaves with blowing controlled air. • Physically tea leaves become rubbery. • Chemically, • Increase of Amino Acids • Increase of flavor compounds • Increase of caffeine content. • Increase of cell wall permeability • Normally withering takes 8-10 hours CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 8
  • 9. Rolling and Fermentation • Done to mix up chemical compounds & enzymes. • In orthodox method pressure rollers are used. • Normally have 4, 5 steps of rolling, connected with roll breaking. • Separated rolled leaves are called “dhools” [they are named as 1st dhool, 2nd dhool big bulk] • Rolled leaves are fermented until they gain their color and smell. • Fermentation mean oxidation of polyphenols and here Thearubigins & Theaflevins are formed. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 9
  • 10. Drying • Drying with hot air. • Done to stop enzyme activities. • Tea gains it’s black color. • Tea is no longer alive after drying. • Mainly used dryer types, Endless chain dryer Vibro fluid bed dryer CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 10
  • 11. Sifting, Grading And Packing • Cleaning tea using various methods. Fiber extractor 3T stalk extractor michie sifter chota Middleton Winnower Color separator • Grading of fired tea according to their Particle size and shape Evenness Heaviness • Pack into paper sacks • Send them to auction organized by the tea board CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 11
  • 12. Tea grades • Silver tips • Pekoe • Broken orange pekoe(BOP) • Flowery broken orange pekoe(FBOP) • Flowery broken orange pekoe fanning(FBOPF/FF) • Orange pekoe(OP) • Broken pekoe(BP) • Dust CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 12
  • 13. Refuse Tea • Refuse tea is a part of tea which we cannot take for drinking. • It contents a large amount of fibers and a small amount of black tea. • Normally 10-12% of refused tea is gained on made tea basis. • Most of the large factories sell them to small factories and they process them further and extract small % of black tea. • Good quality leaves reduces the refuse tea percentage. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 13
  • 14. Future of Tea Processing Product • Invention of the tea bags was done by Indians. • Tea cordial making. Process • Using of New technical methods[VSD, CTC] Industry • Tea industry is in a great trouble. • Less of labor. • Political issues. • Old thinking people in front seats. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 14
  • 15. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY 15 THANK YOU AND ENJOY YOUR CUP OF TEA
  • 16. CP 503 - INDUSTRIAL PROCESS TECHNOLOGY