Abstract
Few studies thoroughly investigated different Yucca species introduced to Egypt. As a part of our ongoing investigation of the Yucca species; Yucca aloifolia and its variety Yucca aloifolia variegata, Yucca filamentosa, and Yucca elephantipes (Asparagaceae) were extensively subjected to phytochemical and antimicrobial investigation. Yucca species cultivated in Egypt showed no antimicrobial effect. GC/MS of the lipoid contents of Y. aloifolia variegata was carried out. Twenty-six fatty acids were identified. Saturated fatty acids established almost twice the unsaturated ones and constituted 64.64% of which palmitic acid and palmitoleic acid signifying 58.28% and 30.98%, respectively. Hydrocarbons were 21 constituting 39.64% of the unsaponifiable fraction. Only three sterols 42.36% were detected, major was γ-sitosterol. LC–MS/MS comparison of the 4 plant extracts imply that Y.aloifolia variegata L extract was the richest, which was apparent through its superior biological activity. LC–MS/MS analysis of the total alcoholic extract (Alc) of the leaves of Y.aloifolia variegata L. was performed using MS-techniques at different voltages; equal to 35 and 135 eV. Negative and positive-ion modes analyses at low fragmentation energy allowed the tentative identification of 41 and 34 compounds, respectively. The LC–ESI–MS/MS analysis in the positive mode proved to be better in the identification of saponins.
Highlights
Yucca is a genus of woody perennial shrubs and trees
Liquid chromatography coupled to mass spectrometry (LC/MS) is an important analytical technology e.g. metabolomics experiments[12]
LC–MS-based approaches are expected to be of particular importance in plants, owing to the highly rich biochemistry of plants, which covers many semi-polar compounds, including key secondary metabolite groups, which can best be separated and detected by LC–MS a pproaches[13]
Summary
Yucca is a genus of woody perennial shrubs and trees. Its species are notable for their rosettes of evergreen, numerous sword-shaped leaves which are more or less e nsiform[1]. Soporific and anti-diabetic agents are other reported u ses[2]. Steroidal saponins, both spirostanol and furostanol type have been isolated from different Yucca species[3,4]. LC–MS covers a large array of compounds predominant as secondary metabolites such as terpenoids and p henolics[8]. These two methods were adapted to allow both inclusive impression and full analysis of critical components of p lants[9,10,11]. LC–MS/MS is a Scientific Reports | (2020) 10:17778
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