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Борисенко, Николай Иванович; Борисенко, Сергей Николаевич; Лекарь, Анна Владимировна; Милов, Алексей Александрович; Ветрова, Елена Владимировна (2013)
Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Chemistry, Q, QD1-999, Science, самоассоциация, глицирризиновая кислота, масс-спектрометрия, ионизация электрораспылением, квантовохимические расчеты, комплексообразование, супрамолекулярные комплексы, self-association, glycyrrhizinic acid, mass-spectrometry, electrospray ionization, quantum-chemical research, complexation, supramolecular complex
The mass spectrometry with electrospray ionization  has used to study the processes of the formation the self-association  complexes  Glycyrrhizinic acid (GA). The data of mass spectrometry have  proved the presence of dimers and trimers of GA for samples of 0,2% Monoammonium salt of GA at pH 5,5 and pH 2. These data are consistent with the quantum-chemical calculations of self-associates of glycyrrhizic acid. The quantum-chemical calculations predict the formation of clusters of the general form Xn with a value of n from 1 to n = 6. The data of mass spectrometry and the results of quantum chemical calculations demonstrated   that  the most stable clusters have built on the principle of «head – tail». Self-associated complex of GA composed of two molecules of GA create a cavity between them, with the size which is enough to include guest molecules with the similar size.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

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