Chromatography, Gas

Publication Title: 
Zhong Yao Cai = Zhongyaocai = Journal of Chinese Medicinal Materials

The fatty oils in Terminulia chebula were extracted by supercritical-CO2 fluid extraetion, and their fatty acids and its relative contents were determined by GC-MS. 12 fatty acids were identified. Palmitic acid, linoleic acid and oleic acid of them are main constituents. Compared with petroleum ether extraction method, the extraction rate from SFE-CO2 is higher and extraction time shorter.

Author(s): 
Zhang, X.
Chen, C.
He, S.
Ge, F.
Publication Title: 
Applied Microbiology and Biotechnology

In comparison to other bacteria Bacillus subtilis emits the volatile compound isoprene in high concentrations. Isoprene is the smallest representative of the natural product group of terpenoids. A search in the genome of B. subtilis resulted in a set of genes with yet unknown function, but putatively involved in the methylerythritol phosphate (MEP) pathway to isoprene. Further identification of these genes would give the possibility to engineer B. subtilis as a host cell for the production of terpenoids like the valuable plant-produced drugs artemisinin and paclitaxel.

Author(s): 
Julsing, Mattijs K.
Rijpkema, Michael
Woerdenbag, Herman J.
Quax, Wim J.
Kayser, Oliver
Publication Title: 
Journal of Pharmaceutical Sciences

Fragrance compounds and essential oils with sedative effects influence the motility of mice in inhalation studies under standardized conditions. A significant drop in the motility of mice was registered following exposure to these fragrances. The same results were achieved when the mice were artificially induced into overagitation by intraperitoneal application of caffeine and subsequently subjected to inhalation of fragrance compounds and essential oils. These results proved the sedative effects of these fragrants via inhalative exposure in low concentrations.

Author(s): 
Buchbauer, G.
Jirovetz, L.
J�ger, W.
Plank, C.
Dietrich, H.
Publication Title: 
Bioresource Technology

The essential oil of rose-scented geranium (Pelargonium species, family: Geraniaceae) obtained through steam or water plus steam distillation of shoot biomass is extensively used in the fragrance industry and in aromatherapy. During distillation, a part of the essential oil becomes dissolved in the distillation water (hydrosol) and is lost as this hydrosol is discarded. In this investigation, hydrosol was shaken for 30 min with hexane (10:1 proportion) and the hexane was distilled to yield 'secondary' or 'recovered' essential oil.

Author(s): 
Rao, B. R. Rajeswara
Kaul, P. N.
Syamasundar, K. V.
Ramesh, S.
Publication Title: 
Alternative Therapies in Health and Medicine

CONTEXT: Lipophilic toxicants have been associated with hormone disruption, immune system suppression, reproductive disorders, several types of cancer, and other diseases. Due to environmental persistence and bioaccumulation, body burdens of certain toxicants, such as dichlorodiphenyldichloroethylene (DDE) and polychlorinated biphenyls (PCBs), appear to be a health risk despite the toxicants' having been banned for decades. OBJECTIVE: To determine whether a safe, standardized, Ayurvedic detoxification procedure can mobilize lipid-soluble toxicants and stimulate their excretion.

Author(s): 
Herron, Robert E.
Fagan, John B.
Publication Title: 
International Journal of Biological Macromolecules

Asparagus racemosus Linn. (Fam. Liliaceae) is an ethno-pharmacologically acclaimed Ayurvedic medicinal plant. In the present study, aqueous extract of A. racemosus (ARC) was fractionated and screened for the polysaccharide fraction (ARP). The characterization was done by enzymatic, Size Exclusion, gas chromatography with flame ionization detector (GC-FID), high pressure anion exchange chromatography (HPAEC) and thin layer chromatographic analyses. Phyto-chemical evaluation confirmed the presence of 26.7% of 2→1 linked fructo-oligosaccharides (FOS).

Author(s): 
Thakur, Mayank
Connellan, Paul
Deseo, Myrna A.
Morris, Carol
Praznik, Werner
Loeppert, Renate
Dixit, V. K.
Publication Title: 
Journal of Alternative and Complementary Medicine (New York, N.Y.)

OBJECTIVES: To determine the feasibility of using a computerized biophysical method, gas discharge visualization (GDV), to differentiate ultramolecular doses of homeopathic remedies from solvent controls and from each other.

Author(s): 
Bell, Iris R.
Lewis, Daniel A.
Brooks, Audrey J.
Lewis, Sabrina E.
Schwartz, Gary E.
Publication Title: 
Journal of Oleo Science

Nigella sativa, lupin and artichoke seed oils have been investigated. The oils were subjected to detailed studies using gas chromatographic analysis (GLC) for fatty acids (FA, as methyl esters) and whole sterols (as silyl derivatives). Whereas, high pressure liquid chromatography (HPLC) was employed for determination of molecular species of triacylglycerols (TAG), four sterol lipids (free and acylated sterols, FS and AS, and free and acylated sterylglycosides, FSG and ASG, as their anthroylnitrile derivatives) as well as tocopherol patterns (T).

Author(s): 
M Hassanein, Minar Mahmoud
El-Shami, Safinaz M.
El-Mallah, Mohammed Hassan
Publication Title: 
Nutrients

Abelmoschus esculentus (Malvaceae), Hibiscus acetosella (Malvaceae), Manihot esculenta Crantz (Euphorbiaceae) and Pteridium aquilinum (Dennstaedtiaceae) leaves are currently consumed as vegetables by migrants from sub-Saharan Africa living in Western Europe and by the people in the origin countries, where these plants are also used in the folk medicine. Manihot leaves are also eaten in Latin America and some Asian countries. This work investigated the capacity of aqueous extracts prepared from those vegetables to inhibit the peroxidation of a linoleic acid emulsion.

Author(s): 
Tsumbu, Cesar N.
Deby-Dupont, Ginette
Tits, Monique
Angenot, Luc
Franck, Thierry
Serteyn, Didier
Mouithys-Mickalad, Ange
Publication Title: 
Journal of the American Dietetic Association

Phytosterols reduce cholesterol absorption and low-density lipoprotein cholesterol concentrations, but the quantity and physiological significance of phytosterols in common diets are generally unknown because nutrient databases do not contain comprehensive phytosterol data. The primary aim of this study was to design prototype phytosterol-deficient and high-phytosterol diets for use in controlled feeding studies of the influence of phytosterols on health. A second aim was to quantify the phytosterol content of these prototype diets and three other diets consumed in the United States.

Author(s): 
Racette, Susan B.
Spearie, Catherine Anderson
Phillips, Katherine M.
Lin, Xiaobo
Ma, Lina
Ostlund, Richard E.

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