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Carbohydr Polym. 2014 Mar 15;103:418-26. doi: 10.1016/j.carbpol.2013.12.068. Epub 2014 Jan 3.

Coffea arabica instant coffee--chemical view and immunomodulating properties.

Author information

1
Institute of Chemistry, Department of Glycomaterials, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia. Electronic address: chemcape@savba.sk.
2
Institute of Chemistry, Department of Immunochemistry of Glycoconjugates, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
3
Institute of Chemistry, Department of Analytical, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
4
Institute of Chemistry, Department of Glycomaterials, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia.
5
Illycaff s.p.a., Research & Innovation, via Flavia 110, I-34147 Trieste, Italy.

Abstract

Results of chemical analyses and immunological studies of two Coffea arabica instant coffee powders obtained by freeze-dried (ICPf) and spray-dried (ICPs) procedures, and arabinogalactan-protein (AGP3) obtained from ICPf are presented. For instant coffee powders no significant differences have been found in carbohydrate (ICPf: 37%, ICPs: 38%) as well as in caffeine (ICPf: 3.0%, ICPs: 3.4%) contents. Their (1)H NMR spectra revealed differences in trigonelline and chlorogenic acids content and in a degree of AGP backbone substitution. Immunobiological tests of all samples (ICPf, ICPs, AGP2 and AGP3) revealed a significant immunostimulatory effect on induction of interleukin 2 and free radicals secretion by mice immunocytes. Moreover, tests revealed more pronounced effect of arabinogalactans AGP2 and AGP3 compared to instant coffee powders (ICPf and ICPs).

KEYWORDS:

Arabinogalactan-protein; Coffea arabica beans; FT-IR; Immunobiological activity; Instant coffee powder; NMR

PMID:
24528749
DOI:
10.1016/j.carbpol.2013.12.068
[Indexed for MEDLINE]

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