Glycosidically bound volatiles—a review 1986–1991

Abstract

Five years ago, in 1986, only a limited number of glycosidically bound volatiles were known and little could be reported on the distribution of those compounds in the plant kingdom. Since then an explosion of research activities in this field has led to the publication of many interesting results concerning structurally diverse terpenoid and non-terpenoid glycosides, their occurrence, and their role in different plant species. Up to now, about 200 different aglycone structures have been found in about 150 species belonging to 35 different families including ferns, gymnosperms, dicotyledons, and monocotyledons.All the diverse results concerning the role of these compounds in the plants should not lead us into ascribing to them an exclusive role, such as being involved in essential oil metabolism, as early workers have postulated. Although considering new electron microscopical observations of a transformation of carbohydrate-rich substances into lipophilic droplets at the tonoplast of Menha x piperitu secretory cells, the range of possible roles should not be underestimated. New experimental work should not only provide new analytical data but should also attempt to throw more light on the role of the glycosides.

Origins of Grape and Wine Aroma. Part 1. Chemical Components and Viticultural Impacts

“…The glycosylation of flavor compounds is thought to increase the water solubility of the aglycone to improve storage in vacuoles (Hardie et al 1996) and transport within the plant (Winterhalter andSkouroumounis 1997, Sirikantaramas et al 2008). However, terpene alcohols and phenols do not always change in solubility due to the glycosylation of their hydroxyl groups (Stahl-Biskup et al 1993).…”

Free and bound volatiles of rocket (Eruca sativa Mill.)

“…[11][12][13] However, these compounds have not so far been researched in rocket. Glycoside hydrolysis liberates aglycones, a complex group of chemical compounds that include aliphatic alcohols, alkylphenols including phenylpropanes, C 13 -norisoprenoids, monoterpenes and sesquiterpenes.…”

Glycosidically Bound Volatile Compounds of <i>Satureja Montana</i> L., <i>S. cuneifo-lia</i> Ten., <i>S. subspicata</i> Vis. and Endemic <i>S. visianii</i> Šilic

“…In addition to above listed dominant aglycones, other quantitatively important components in all vegetative phases of the S. visianii were camphor, 8a-acetoxylemolol and thymol ( Table 1). Aliphatic alcohols, 2-phenylethanol, benzyl alcohol, eugenol, linalool, geraniol, nerol and α-terpineol can, more or less, be considered common in aglycone fraction of Lamiaceae family [14] and the eugenol was found to be the main aglycone in most plants of this family [10] [14] [15]. Eugenol was the main aglycone of S. montana in the period after flowering ( Table 1).…”