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Title: Identification of nutritional descriptors of roasting intensity in beverages of Arabica and Robusta coffee beans
Authors: Bicho, Natalina
Leitão, A.E.
Ramalho, José
Alvarenga, Nuno
Lidon, Fernando
Keywords: Arabica coffee
Chlorogenic acids
Robusta coffee
Roasting intensity
Issue Date: Dec-2011
Publisher: Informa HealthCare
Citation: Bicho, N.C., Leitão, A. E., Ramalho, J.C., Alvarenga, N.B., Lindon, F.C. (2011). Identification of nutritional descriptors of roasting intensity in beverages of Arabica and Robusta coffee beans. International Journal of Food Sciences and Nutrition, 62 (8), 865-871.
Abstract: Arabica and Robusta coffee beans were roasted at 220 ^ 108C for 7, 9 and 11 min to identify chemical descriptors in the beverages. The pH of the beverages showed the lowest value in the medium roasting level. In each degree of browning, the soluble solids content remained slightly higher in Arabica drinks. The contents of caffeine did not vary, but trigonelline decreased with burning up intensity. Chlorogenic acids also decreased with increasing roasting time. The 5-O-caffeoylquinic acid prevailed in Arabica and Robusta beverages, but the isomers of dicaffeoylquinic and feruolilquı´nic acids remained higher in Robusta. It was concluded that trigonelline and total caffeoylquinic, fatty dicaffeoylquinic and fatty feruolilquı´nic acids detached the beverages according to roasting intensity. Caffeine and pH allowed drinks separation between both species. Soluble solids take apart Arabica and Robusta drinks in each degree of roasting. All the individual groups of chlorogenic acids also explained 90% of the variance among samples.
Peer reviewed: yes
ISSN: 1465-3478
Publisher version:
Appears in Collections:D-TCA - Artigos em revistas com peer review

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