Partial least squares-based multivariate spectral calibration method for simultaneous determination of beta-carboline derivatives in Peganum harmala seed extracts

A case of β-carboline alkaloid intoxication following ingestion of Peganum harmala seed extract

“…According to the existing limited literature, the total alkaloid content of P. harmala seeds varies between 2% and 7% by dry weight [32,33] and the ratio of alkaloids in the plant may change at different stages of growth, whereas there are no data regarding the characterisation of the seed decoction. On the contrary, Ayahuasca beverages of the south western Amazon basin were extensively characterized by Rivier and Lindgren [18] that determined the presence of harmine in the range 0.07-0.19 mg/mL, THH in the range 0.015-0.09 mg/mL and harmaline in the range 0.003-0.016 ng/mL.…”

Rapid measurement of total acid content (TAC) in vinegar using near infrared spectroscopy based on efficient variables selection algorithm and nonlinear regression tools

“…PLS is a linear regression tool based on full-spectrum (Hemmateenejad, Abbaspour, Maghami, Miri, & Panjehshahin, 2006). And PLS has been reported in analysis of numerous cases (Cozzolino, et al, 2004;SzydlowskaCzerniak, 2007).…”

Heavy atom enhanced room-temperature phosphorimetry for ultratrace determination of harmane

“…When compared to the results achieved using MECK, it has been demonstrated that SSRTP can be potentially used for such analytical application. SSRTP method is simple and selective, eliminating the need for neither powerful separation methods (HPLC 20 , for instance) to isolate the analyte from the tested potentially interferent substances nor multivariate approaches 24 for the determination of harmane in mixtures. …”