The typical aroma and flavour of coriander seed is not fully developed until it is completely dry.
Usually the whole plants are spread out in the sun to dry. They are left to wither for two days
until the moisture content is about 18%. They are then threshed to remove the seeds which are
further dried to a final moisture content of 9%. The second drying stage should be in the shade
to prevent over-heating of the seeds. The drying time depends on the climate.
In some countries artificial dryers are used to dry the seed. It is important to ensure that the
temperature of drying ovens does not exceed 100°C as this reduces the levels of volatile oils.
The clean seed should be stored in bags or closed containers.
Essential oil extraction
The ground seeds can be used for the extraction of essential oils. The seed is ground
immediately prior to distillation to increase the yield of oil and reduce the distillation time. The
essential oil content varies from 0.1-1.5% and contains a range of different essential oils. For
more information on how to distil essential oils, see the Practical Action Technical Brief.
This is a selective list of suppliers of equipment and does not imply endorsement by Practical
This website includes lists of companies in India who supply food processing equipment.
S. F. No. 120/2, Kalapatty Post Office
Coimbatore - 641 035
Tel: +91 422 2666108/2669909
Fax: +91 422 2666255
Bombay Engineering Works
1 Navyug Industrial Estate
185 Tokersey Jivraj Road
Opposite Swan Mill, Sewree (W)
Tel: +91 22 24137094/24135959
Fax: +91 22 24135828
Bry-Air (Asia) Pvt Ltd
21C Sector 18
Gurgaon – 122015
Tel: +91 124 4091111
Fax: +91 124 4091100
Tata Energy Research Institute (TERI)
Darbari Seth Block
IHC Complex, Lodhi Road
Tel: +91 11 2468 2100/ 4150 4900
Fax: +91 11 2468 2144/ 2468 2145
Premium Engineers Pvt Ltd
Plot No 2009, Phase IV, GIDC
Vatva, Ahmedabad 382445
Tel: +91 79 25830836
Fax: +91 79 25830965
No 951-F Jian Chuan Road
P R of China
Tel: +86 21 51591555
Fax: +86 21 51591559