title: Mycosporine-like Amino Acids and Other Phytochemicals Directly Detected by High-Resolution NMR on Klamath (Aphanizomenon flos-aquae) Blue-Green Algae.
abstract: This study describes for the first time the use of high-resolution nuclear magnetic resonance (NMR) on Klamath (Aphanizomenon flos-aquae, AFA) blue-green algae directly on powder suspension. These algae are considered to be a "superfood", due to their complete nutritional profile that has proved to have important therapeutic effects. The main advantage of NMR spectroscopy is that it permits the detection of a number of metabolites all at once. The Klamath alga metabolome was revealed to be quite complex, and the most peculiar phytochemicals that can be detected directly on algae by NMR are mycosporine-like amino acids (porphyra-334, P334; shinorine, Shi) and low molecular weight glycosides (glyceryl β-d-galactopyranoside, GalpG; glyceryl 6-amino-6-deoxy-α-d-glucopyranoside, ADG), all compounds with a high nutraceutical value. The presence of cis-3,4-DhLys was revealed for the first time. This molecule could be involved in the anticancer properties ascribed to AFA.
authors.affiliation: Dipartimento di Scienze per la Qualità della Vita, Università di Bologna , via Corso d'Augusto 237, 47921 Rimini, Italy.
authors.forename: Valeria
authors.initials: V
authors.lastname: Righi
authors.forename: Francesca
authors.initials: F
authors.lastname: Parenti
authors.forename: Luisa
authors.initials: L
authors.lastname: Schenetti
authors.forename: Adele
authors.initials: A
authors.lastname: Mucci
mesh_terms: D000596:Amino Acids / Q000737:chemistry*; D046890:Aphanizomenon / Q000737:chemistry*; D000458:Cyanobacteria / Q000737:chemistry*; D019587:Dietary Supplements; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D064209:Phytochemicals / Q000737:chemistry
chemical_list: D000596:Amino Acids; D064209:Phytochemicals
keywords: Aphanizomenon flos-aquae; ESI-QTOF mass spectrometry; Klamath algae; glycosides; mycosporine-like amino acids; nuclear magnetic resonance spectroscopy