Anthraquinones and beta-polysaccharides content and distribution in Aloe plants grown under different light intensities

作者：Lucini Luigi^*; Pellizzoni Marco; Molinari Gian Pietro

来源：Biochemical Systematics and Ecology, 2013, 51: 264-268.

DOI：10.1016/j.bse.2013.09.007

• Aloe arborescens Mill.
• Aloe vera (L.) Burm.f.
• Tandem mass spectrometry
• Aloin
• Acemannan

The curative and therapeutic effects of Aloe plants have mostly been ascribed to anthra-quinones such as aloin, and to some characteristic beta-polysaccharides. Although the actual concentration of these bioactives in Aloe plants has not yet been fully clarified, it was expected that plant species, age and growth conditions would play an important role. The aim of this work was to investigate the relationship between species, light intensity and the content of bioactives in Aloe arborescens Mill. and Aloe vera (L) Burm.f. %26lt;br%26gt;Aloin was determined by liquid chromatography tandem mass spectrometry: Its concentration was higher in the leaves of younger plants and there was more in A. vera than in A. arborescens. The content of beta-polysaccharides was determined colorimetrically after binding with Congo Red dye. The results were not affected by plant age, and concentrations were higher in A. vera than in A. arborescens. %26lt;br%26gt;Finally, even though the type of tunnel (and therefore light spectrum) under which plants were grown seemed to have no effect on the content of bioactives, the plants grown under reduced light intensities had significantly lower aloin and beta-polysaccharides concentrations.

• 出版日期2013-12