Myrcenol


Reaction of myrcene and sulfur dioxide under pressure produces myrcene sulfone. This adduct is stable under ordinary temperatures and provides a way to stabilize the conjugated diene system in order to hydrate it with sulfuric acid. The myrcene sulfone hydrate produced is pyrolyzed in the vapor phase in order to regenerate the diene system to produce myrcenol [543-39-5] (50).  [c.417]

The sulfur dioxide can be recovered and recycled. The myrcenol, after purification by distillation, can condense with acrolein to produce Lyral [31906-04-4], an important aldehyde with a strong-lasting odor similar to Lily-of-the-valley (92).  [c.417]

Arabinan. This highly soluble polymer is found in the extracts of many fmits and seeds, in the boiling water extracts of pine wood (127), in the extracts of marshmallow roots (A/t/jaea officina/is) (128), and aspen (63) and willow (Sa/ix a/ba F) (129) bark. Because arabinan can be isolated from mildly degraded pectin fractions, it is often difficult to determine whether it is a hemiceUulose or a labile fragment of a larger polysaccharide and/or lignin complex. Arabinans have a complex stmcture composed almost entirely of 5-linked a-L-arabinofuranosyl units with similar residues linked to them at C-2 and/or C-3 and is soluble in 70% aqueous methanol solution.  [c.32]

Overall, these aminoglycosides are approximately equally effective for the clinical treatment of infections involving susceptible strains of Eschencia coli Klebsiella sp. Enterobacter sp. Citrobacter sp. Serratia sp. Proteus mirabilis Morganella morganii Proteus vulgaris Proteus rettgeri Providencia stuartii Pseudomonas aeruginosa and the gram-positive species Staphylococcus aureus. Other gram-positive bacteria, such as Streptococcus sp. and anaerobes are not generally susceptible to aminoglycosides (52—56). There are some differences in the in vitro activities of the various aminoglycosides against these species. Tobramycin (4) tends to have better in vitro activity against P. aeruginosa than gentamicin (3), but it has been difficult to show that these differences are reflected in clinical performance. There are also differences in potency. Amikacin (5, R = (5)-COCHOHCH2CH2NH2), for example, is generally less potent than the others, but a decreased toxicity allows the dose to be adjusted for comparable efficacy. Thus, especially in the case of the four aminoglycosides for which there is the greatest amount of clinical experience, ie, gentamicin, tobramycin, amikacin, and netilmicin (6, R = CH2CH2), there does not appear to be a significant difference in the outcome of treatment of infections (57) due to sensitive strains of these bacteria.  [c.481]

Beet colorant is best used ia foods with short shelf fives that do not requite high or prolonged heat treatment. When heat treatment is necessary, degradation of the colorant is minimized by a dding it after the heat treatment, or as neat the end of the heating cycle as possible. Beet colorant has been used successfully to color such products as hard candies, yogurts, ice creams, salad dtessiags, ready-made ftostings, cake mixes, meat substitutes, powdered drink mixes, gravy mixes, marshmallow candies, soft drinks, and gelatin desserts. Typically, the colorant is added at 0.1—1%, based on the weight of the final product.  [c.450]

Parts Aniseed 10 Parts Liquorice 20 Parts Iceland moss 30 Parts Marshmallow root 30 Parts Coltsfoot  [c.15]

Parts Marshmallow root 10 Parts Fennel 10 Parts Iceland moss ] 5 Parts Plantain herb 10 Parts Liquorice 30 Parts Thyme  [c.16]

If myrcene be heated with glacial acetic acid to 40° for three to four hours, with the addition of a little sulphuric acid, hydration takes place, and an alcohol, which is termed myrcenol is formed. This body is an oil, of specific gravity 0 9032, refractive index 1 4806 at 15°, and boiling-point 99° at 10 mm. pressure. It yields a phenylurethane melting at 68°.  [c.78]

Eibisch, m. marsh mallow (the plant), -wurzel, /. marsh mallow root. zucker, m. marshmallow (the confection).  [c.116]

Merkmal, n. characteristic, mark, sigri, symbol, indication, index, criterion.  [c.294]


See pages that mention the term Myrcenol : [c.649]    [c.654]    [c.355]    [c.208]    [c.418]    [c.62]    [c.117]    [c.458]    [c.207]    [c.241]    [c.273]    [c.361]   
The chemistry of essential oils and artificial perfumes Volume 2 (1922) -- [ c.78 ]