| Literature DB >> 24528749 |
Peter Capek1, Ema Paulovičová2, Mária Matulová3, Danica Mislovičová4, Luciano Navarini5, Furio Suggi-Liverani5.
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).Entities:
Keywords: Arabinogalactan-protein; Coffea arabica beans; FT-IR; Immunobiological activity; Instant coffee powder; NMR
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Year: 2014 PMID： 24528749 DOI： 10.1016/j.carbpol.2013.12.068
Source DB: PubMed Journal: Carbohydr Polym ISSN： 0144-8617 Impact factor: 9.381