Variations in Diterpenes-Cafestol and Kahweol Content in Beans of Robusta Coffee Grown at Different Altitudes
2016
Sridevi, V. | Giridhar, P.
Cafestol and kahweol are the two anti-nutritional diterpenes unique to coffee. They are associated with lipids of the coffee and are reported to be responsible for hypercholesterolemic effect in humans. In the present study, diterpene profiles in beans of ripened Robusta coffee (Coffea canephora) fruits collected from trees grown at different altitudes were analysed by High performance liquid chromatography and mass spectrum. The levels of free diterpenes cafestol and kahweol were found to be more in beans collected from low elevations (0.12 % of cafestol and 0.045 % of kahweol) than that of high elevation grown trees (0.042 % of cafestol and 0.014 % of kahweol). Apart from these, some major cafestol and kahweol esters viz., cafestol linoleate, cafestol oleate, cafestol palmitate, cafestol stearate, kahweol linoleate, kahweol oleate and kahweol palmitate were identified. The present study shows that, the altitude at which coffee trees are grown had significant influence on their diterpene content.
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