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Industrial Crops and Products, 2002, 16, 2, 133-144, https://doi.org/10.1016/S0926-6690(02)00038-9 Life Sciences, 2006, 78, 13, 1419-1432, https://doi.org/10.1016/j.lfs.2005.07.020 Temperature dependence of the retention index for perfumery compounds on a SE-30 glass capillary column. Composition of the essential oil of Micromeria dolichodontha P. H. Davis, Comm., 1988, 11, 1, 56-60, https://doi.org/10.1002/jhrc.1240110115 Silica gel is the most widely used sorbent for the essential oils, with solvents such as benzene or toluene, chloroform, methylene chloride ethyl acetate for development. TLC chromatograms of tetraploid camomile (CFH) essential oil obtained by steam distillation (A), compounds isolated from CFH oil (B) and separation of trans-farnesene and chamazulene (C). Food Chem., 2007, 55, 8, 3027-3036, https://doi.org/10.1021/jf062508c ; Vérin, P.; Sobral, M.; Bessière, J.-M.; Lamaty, G.; Henriques, A.T., K/min, 220. The 7-deoxyloganetic acid glucosyltransferase is responsible for the formation of 7-deoxyloganic acid [54], which is further hydrolyzed by 7-deoxyloganic acid 7-hydroxylase to form loganic acid [51]. [all data], Javidnia, Miri, et al., 2002 Putative biosynthesis of iridoid monoterpenoids present in Centaurium species goes via iridoid secologanin. To the best of our knowledge, Centaurium genes involved in the biosynthesis of secologanin and further to swertiamarin are not identified and functionally characterized. Flavour Fragr. Volatile constituents of different parts of cornmint (Mentha arvensis L.), Column type Active phase I Reference Comment; Capillary: BP-1: 1285. J., 2002, 17, 1, 20-22, https://doi.org/10.1002/ffj.1023 The following components were used in generating the plot: Additonal code used was developed at NIST: . All rights reserved. . Figure 11.2. K/min; Column length: 25. m; Column diameter: 0.25 mm; T, 50. m/0.32 mm/0.4 μm, He, 60. . . ; Saxena, R.K.; Qazi, G.N., On dilution, the fresh smell is similar to that of mint and rose. . [all data], Edris and Farrag, 2003 A technique used to isolate or purify various components present in essential oils, fractional distillation separates the volatile oil in different fractions or portions at various boiling points. TLC has been used as preparative tool to obtain pure components to be used for further characterization. Baser, K.H.C. Your institution may already be a subscriber. Go To: Top, Gas Chromatography, References, Notes. J. Agric. Analysis of free terpenoids in four Vitis vinifera varietis using solvent assisted flavour evaporation and gas chromatography-tandem mass spectrometry, ; Farrag, E.S., . ; Raina, V.K. . Studies on terpenes. that these items are necessarily the best available for the purpose. . K/min, 220. K/min, 230. Proc. Volatile flavor constituents of acerola (Malpighia emarginata DC.) [all data], Díaz-Maroto, Castillo, et al., 2007 Baratta, M.T. SLS is a cytochrome P450-dependent enzyme [53]. Dwivedi, S.; Khan, M.; Srivastava, S.K. ; Marbot, R., C @ 2. min, 5. from Ivory Coast., C @ 1. min, 3. Chinese J. ; Srivastava, A., ; Macchioni, F.; Cioni, P.L. Sweroside is present in all investigated species, while its derivatives centapicrin [61,62]; desacetylcentapicrin [62]; and decentapicrin A, decentapicrin B, and decentapicrin C [27,62] are reported for Centaurium chloodes, C. erythraea, Centaurium linarifolium, Centaurium littorale, Centaurium majus, and/or Centaurium scilloides. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. The use information is displayed per substance life cycle stage (consumer use, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites or in manufacturing). Tóth, A.; Praszna, L., An analogous mechanism for camphor catabolism appears to be operative in mature sage leaves (S. officinalis), where the ketone is lactonized to 1,2-campholide (83), glycosylated (84), and transported to the roots where it is oxidatively degraded, at least in part, to acetyl-CoA (Scheme 11).142,143 Camphor catabolism has also been demonstrated in cell suspension cultures of sage. 1.) Calculation of Gas Chromatographic Retention Indices for Monoterpenes and Terpenoids from Their Physico-Chemical Constants, Chem., 1968, 236, 215-227. Menthyl acetate constitutes 2-3% of the volatile oil of Mentha arvensis oil. intended to imply recommendation or endorsement by the National Technol., 1997, 30, 4, 429-431, https://doi.org/10.1006/fstl.1996.0194 fruit, Comparative study of the leaf volatiles of Arctostaphylos uva-ursi (L.) Spreng. Flavour Fragr. Of the oxygenated monoterpenoids, terpinene-4-ol, menthone, linalool, β-thujone, camphor, isomenthone, menthol, menthyl acetate, 1,8-cineole, borneol, bornyl acetate, p-cymen-8-ol, α-terpineol, trans-anethole, pulegone, nerol, carvone, geraniol, and verbenone are identified in C. erythraea. J., 2001, 16, 6, 411-416, https://doi.org/10.1002/ffj.1025 Holmes) cultivars, Figure 1 shows the TLC separation obtained using silica gel TLC plates. Flavour Fragr. [all data], Agnihotri, Agarwal, et al., 2005 The neomenthol, however, is largely converted to neomenthyl-β-d-glucoside (80) which is transported from the leaf to the rhizome where the glycoside is rapidly hydrolyzed. C @ 20. min, 30. m/0.25 mm/0.25 μm, Helium, 3. C @ 5. min, 4. Some synthesis of menthol and menthone had occurred in the undifferentiated callus, but the pattern was essentially the same as that found by Bricourt and Paupardin (1975). The aglycone is then oxidized back to menthone which undergoes an unusual lactonization reaction to form 3,4-menthone lactone (81).140 This lactone is apparently subject to β-oxidative metabolism from which the original tritium label could be found in significant yield in acyl lipids, sterols, and carbohydrates.141. from Malaysia, Fluids, 2007, 43, 2, 249-258, https://doi.org/10.1016/j.supflu.2007.05.007 Comparison of volatile compounds berween the crude drugs, Onji-tsutsu and Onji-niki, K/min, 300. . However, the composition of the oil from each source differed because the proportions of menthol (49%) and menthone (27%) were higher in the plant than in the callus. errors or omissions in the Database. J., 2006, 21, 5, 789-791, https://doi.org/10.1002/ffj.1715 . C @ 2. min, 5. ; Dorman, H.J. C @ 5. min, N2, 5. Packaging 25, 100 mL in poly bottle Bertoli, A.; Lepnardi, M.; Krzyzanowska, J.; Oleszek, W.; Pistelli, L., Menthyl acetate is a natural monoterpene which contributes to the smell and flavour of peppermint. (Reproduced with permission from Zekovic Z, Pekii B, Lepojevic Z and Petrovic L (1994) Chromatographia, 39: 587–590. Ultimately, secologanin is converted into gentiopicrin and other secoiridoids through several currently not-elucidated steps [50]. ; Jantan, I.; Awang, K., Tudor, E., K/min, 220. Ka, M.-H.; Choi, E.H.; Chun, H.-S.; Lee, K.-G., C @ 4. min, He, 3. Downstream steps leading to sweroside and further to swertiamarin via gentiopicrin are not elucidated yet. C @ 10. min, 30. m/0.32 mm/0.25 μm, 60. (Gentianaceae), [27,34,58,59,71,83,87,89,92–94,96,124–128], [27,34,58–60,71,83,87,89,92–96,124–126,128], Colloids and Surfaces A: Physicochemical and Engineering Aspects, Chemical Analysis of Food: Techniques and Applications. C @ 5. min, 2. J., 1997, 12, 1, 37-41, https://doi.org/10.1002/(SICI)1099-1026(199701)12:1<37::AID-FFJ605>3.0.CO;2-V

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