Midnight.Sun
Newly Enlightened
- Joined
- Jun 22, 2015
- Messages
- 143
{ Dried Green Coffee Beans }
•Roasted at ~ 170 C
•Grounded (grinding to powder)
•Dissolved with hot steam and pressure, filtered then heated to ~ 170 C to become a condensed extract with ~ 15-30 % coffee in mass
•Then the coffee extract is dried by either two ways:
First { Freeze Drying }
More expensive way that produces a higher quality product.
•Freeze to - 50 C then crushed into deep frozen granules
•Sublimation Drying: the granules are driven into a low pressure chamber and heated to 60 C in strong vacuum to evaporate the granules frozen water into steam that would be released from the chamber leaving the dry final instant coffee granules on their trays ready for packing.
Second { Spray Drying }
More economic way with shorter drying time.
The coffee extract is driven into hot tube or tumbler, with air flow temperature of IN 270 C - OUT 110 C to reduce the moisture of the extract from 70-85% into 3-3.5% which results in a very fine instant coffee particles that can be later managed into bigger more consumer suitable particles applying light steam sprays.
Midnight.Sun 🍩 ☕️
•Roasted at ~ 170 C
•Grounded (grinding to powder)
•Dissolved with hot steam and pressure, filtered then heated to ~ 170 C to become a condensed extract with ~ 15-30 % coffee in mass
•Then the coffee extract is dried by either two ways:
First { Freeze Drying }
More expensive way that produces a higher quality product.
•Freeze to - 50 C then crushed into deep frozen granules
•Sublimation Drying: the granules are driven into a low pressure chamber and heated to 60 C in strong vacuum to evaporate the granules frozen water into steam that would be released from the chamber leaving the dry final instant coffee granules on their trays ready for packing.
Second { Spray Drying }
More economic way with shorter drying time.
The coffee extract is driven into hot tube or tumbler, with air flow temperature of IN 270 C - OUT 110 C to reduce the moisture of the extract from 70-85% into 3-3.5% which results in a very fine instant coffee particles that can be later managed into bigger more consumer suitable particles applying light steam sprays.
Midnight.Sun 🍩 ☕️
