Article citationsMore>>

Zhang, X., Li, W., Yin, B., Chen, W., Kelly, D.P., Wang, X., Zheng, K. and Du, Y. (2013) Improvement of Near Infrared Spectroscopic (NIRS) Analysis of Caffeine in Roasted Arabica Coffee by Variable Selection Method of Stability Competitive Adaptive Reweighted Sampling (SCARS). Spectrochimica Acta Part A, 114, 350-356.
https://doi.org/10.1016/j.saa.2013.05.053

has been cited by the following article:

• TITLE: Determination of Theobromine and Caffeine in Theobroma cacao Husk from Ethanolic Extract by GC-MS after CC Separation

  AUTHORS: José González, Max Monan, Julio Perez, Enrique Gómez, Damaris De La C. Salgado, Danae Pérez

  KEYWORDS: Theobroma cacao, Caffeine, Theobromine, GC-MS, CC, TLC

  JOURNAL NAME: Open Access Library Journal, Vol.6 No.11, November 26, 2019

  ABSTRACT: After CC separation of 21 samples from Theobroma cacao Husk was analyzed by GC-MS, from ethanolic extract at 90% was recovered a solid residue of 1 g after several days on the table of the Lab. This main residue (300 mg) was analyzed after successive separations with mixtures of CHCl3: MeOH (7:3) and CHCl3: MeOH (5:5) in CC using Sílica Gel G 60-120 Mesh. All samples were analyzed by TLC on silica gel with fluorescent indicator 254 nm on aluminum cards (layer thickness 0.2 mm) (10 × 20 cm) using CHCl3: MeOH: n-propanol: water (5:6:1:4) as eluent (v/v/v). The presence of Caffeine (CF) and Theobromine (TB) was confirmed after several analyses of the samples by their characteristic fragmentation pattern but nevertheless was found the presence of Theophylline.