OBJECTIVETo explore the best pretreatment condition of inorganic salting on volatile oil-bearing water body of Notopterygii Rhizoma et Radix before membrane separation.

METHODThe simulative system of volatile oil-bearing water body of Notopterygii Rhizoma et Radix was pre-treated before membrane separation by salting. The best conditions of salting were determined by selecting types and amounts of inorganic salt as investigate factors and comparing membrane flux and oil retention rate.

RESULTThe best pretreatment condition of inorganic salting on volatile oil-bearing water body of Notopterygii Rhizoma et Radix before membrane separation was to add 2% sodium chloride (NaCl) according to the amount of oil-bearing water body. Gas chromatographic fingerprint showed that inorganic salting did not affect the active ingredient of volatile oil.

CONCLUSIONAdding NaCl to volatile oil-bearing water body of Notopterygii Rhizoma et Radix before membrane separation can optimize membrane processes by improving membrane flux.

Apiaceae ; chemistry ; Oils, Volatile ; isolation & purification ; Sodium Chloride ; pharmacology

OBJECTIVETo separate essential oil of Caryophyllix flos from oil-in-water emulsion, and to enrich the essential oil by microfiltration (MF).

METHODUsing membrane flux and removal rate of COD as the indicatrixes, the membrane material as well as the operating conditions containing pressure, surface speed, temperature were optimized.

RESULTThe results showed that QWLM membrane of hydrophilic is the proper membrane, and the best operating conditions was at 0.06 MPa, 60 degrees C, and 150 r min(-1) stir speed.

CONCLUSIONIt can be concluded that MF is a reasonable way to enrich essential oil of C. flox.

Emulsions ; chemistry ; Filtration ; instrumentation ; methods ; Membranes, Artificial ; Oils, Volatile ; chemistry ; isolation & purification ; Plant Oils ; chemistry ; isolation & purification ; Syzygium ; chemistry

To reveal the extraction regularity of volatile oil from galangal by GC-MS analysis. The volatile oil in galangal was extracted by steam distillation. The extract was collected every 30 min, the oil part and the water part were separated. GC-MS was used to analyze the extraction liquid collected at different time periods. A total of 140 volatile components were obtained by GC-MS analysis. Among them, the main components were eucalyptus oil alcohol, alpha-pine oil alcohol and 4-terpene alcohol; 22 special components were dissolved in water, 77 special components were dissolved in oil and 41 components were dissolved in both oil and water. With the increase of specific components in water, the content of Eucalyptus in water increased in a linear manner. The increase of eucalyptus oil further promoted the dissolution or dispersion of alpha PN in water, and the change of specific components in oil was positively correlated with the content of Eucalyptus and alpha-terpilenol in oil. The results of principal component analysis show that the physical and chemical properties of the compounds were important factors affecting the distribution of components. PC1 (molecular weight, melting point, boiling point positive correlation), PC2 (negative correlation of refractive index) and PC3 (positive correlation of water solubility) were the main components that lead to the differences in composition distribution. The process of extracting volatile oil from galangal through steam distillation was affected by the physical and chemical properties of volatile components. Some components were specifically distributed in the fragrance and volatile oil system. The endemic components of aromatic water increased the content of the main components in the water system, which may lead to the "emulsification", reduction of the yield and low quality of the volatile oil.
Distillation ; Gas Chromatography-Mass Spectrometry ; Kinetics ; Oils, Volatile ; isolation & purification ; Plant Oils ; isolation & purification ; Steam ; Zingiberaceae ; chemistry

OBJECTIVETo analyse chemical constituents of volatile oil from Dendranthema indicum var. aromaticum var. nov. by GC-MS.

METHODThe volatile oil was extracted from Dendranthema indicum var. aromaticum var. nov. through steam distillation and was analysed with different kinds of capillary columns to find out the optimal conditions. The content of compositions of volatile oil was determined with normalization method, and the constituents were identified by GC-MS.

RESULT44 Components were separated and identified, which accounted for over 43% of total volatile oil.

CONCLUSIONThe main constituents in the essential oils from Dendranthema indicum var. aromaticum var. nov. are Verberol, (-)zingiberene, beta-sesquiphellandrene, farnesene, transchrysanthenyl acetate, and caryophyllene.

Asteraceae ; chemistry ; Flowers ; chemistry ; Oils, Volatile ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Sesquiterpenes ; analysis ; Terpenes ; analysis

OBJECTIVETo provide the foundation for reasonable utilization by analysing the essential oils of Flos chrysanthemi Indici in different areas.

METHODThe essential oils were extracted by using steam distillation and separated with GC capillary columns. The components were quantitatively determined with normalization method, and were identified with GC-MS.

RESULTS18, 17 and 20 compounds of essential oils from Guangxi, Guangdong and Hubei were identified.

CONCLUSIONThere are significant differences among the components and contents of essential oils of Flos chrysanthemi Indici from Guangxi, Guangdong and Hubei.

Chrysanthemum ; chemistry ; Climate ; Ecology ; Flowers ; chemistry ; Oils, Volatile ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Seasons

OBJECTIVETo analyze the volatile oil of olibanum and apply scientific evidences for its applications.

METHODThe volatile oil was analyzed by GC-MS.

RESULTOne hundred components were identified,accounting for 91.26% of the total volatile oil, and the main components were octyl acetate, beta-elemene. It contains some transdermal absorption enhancers.

CONCLUSIONThe components of olibanum volatile oil were complicated; the connatural transdermal absorption enhancers make it possible to use in external preparation.

Acetates ; isolation & purification ; Boswellia ; chemistry ; Gas Chromatography-Mass Spectrometry ; methods ; Oils, Volatile ; isolation & purification ; Sesquiterpenes ; isolation & purification

OBJECTIVETo provide the foundation for reasonable utilization by analysing the essential oils from Serissa serissoides in different seasons.

METHODEssential oils were obtained by steam distillation. The chemical components were separated and identified by gas chromatography-mass spectrometer (GC-MS). The relative content of each component was determined by area normalization.

RESULTForty-three peaks were identified from autumn material, representing 78.91% of the total oil. Main constituents of the essential oil from the autumn material were found to be 1b,5,5,6a-tetramethyl-octahydro-1-oxa-cyclopropa [a] inden-6-one (7.32%); methyl linolenate (4.14%); cubenol (5.97%); 2-methoxy-4-vinylphenol (10.87%); delta-9(10)-tetrahydrocostunolide-1-keto (35.51%). Seventy-two peaks were identified from spring material, representing 79.88% of the total oil. Main constituents of the essential oil from the spring material were found to be caryophyllene (3.315%); ethylbenzene (3.523%); 3-hexen-1-ol (4.537%); 2-methoxy-4-vinylphenol (6.513%); 5-propionyl-2-chlorobenzeneacetic acid, methyl ester (8.541%), germacrene D (12.311%).

CONCLUSIONThe same compounds in both materials are as follows: 2,2-dimethyl-6-methylene-cyclohexanepropanol; 2-methoxy-4-vinylphenol; 3,7-dimethyl-1,6-octadien-3-ol; cubenol; docosane and eicosane. It seems that they are the diagnostic components in these medicinal materials. Essential substances are different in quantity and quality in different seasons.

Alkanes ; analysis ; isolation & purification ; Oils, Volatile ; chemistry ; isolation & purification ; Plants, Medicinal ; chemistry ; Rubiaceae ; chemistry ; Seasons ; Terpenes ; analysis ; isolation & purification

OBJECTIVEA novel green extraction technique of check valve & non-oxygen microwave assisted extraction (CVNO-MAE) for essential oils extraction was established. CVNO-MAE is a combination of microwave heating, vacuum pump and check valve, performed at anaerobic environment without added any solvent or water.

METHODCVNO-MAE has been compared with a conventional technique, solvent free microwave extraction (SFME), for the extraction of essential oils from two Chinese herbs: Curcuma phaeocaulis and Mentha haplocalyx.

RESULTGC-MS analyses of the oils revealed the presence of 36 and 37 compounds in the essential oils of C. phaeocaulis and M. haplocalyx, respectively. There was an obvious difference in the quality of essential oils obtained by the two kinds of extraction methods. The CVNO-MAE method yielded an essential oil of C. phaeocaulis with lower amounts of oxygenated compounds (45.53%) than SFME (62.38%). Higher amounts of oxygenated compounds (89.57%) were present in the M. haplocalyx essential oil of SFME in comparison with CVNO-MAE (82.74%).

CONCLUSIONCVNO-MAE is a fast low temperature extraction method carried in under pressure, appears as a good alternative for the extraction of essential oils from Chinese herbs and a green technology.

Curcuma ; chemistry ; Green Chemistry Technology ; instrumentation ; methods ; Mentha ; chemistry ; Microwaves ; Oils, Volatile ; analysis ; isolation & purification ; Plant Extracts ; analysis ; isolation & purification ; Plant Oils ; analysis ; isolation & purification

OBJECTIVETo research the preparation technology and dissolution of Blumea volatile oil suppository.

METHODIn order to establish the content determination and methodology inspection method of Blumea volatile oil plug, the extraction process of Blumea volatile oil was optimized by using orthogonal test. Optimization on the investigation to the suppository matrix by melting time, appearance and dissolution was carried on. The best prescription craft was determined by determining the best molding temperature, dosage of the matrix and complementary makings. The determination method of dissolution was established by investigating different dissolution method and its impact on the preparation of dissolution.

RESULTThe best conditions of steam distillation extracted Blumea volatile oil was as followed, the ratio of gardenia to liquor 1:6, 2.5% drug amount of sodium, 8 hours of extracting time. The optimum temperature for mold was 60-65 degrees C. Preparation technique of Blumea volatile oil suppository was stable, which after 45 minutes and 3 h in pH 4.5 PBS released at least 70% and 90%.

CONCLUSIONBlumea volatile oil suppository with rational prescription, simple preparation and good stability.

Asteraceae ; chemistry ; Chemistry, Pharmaceutical ; methods ; Distillation ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Oils, Volatile ; chemistry ; isolation & purification ; Plant Oils ; chemistry ; isolation & purification ; Solubility ; Temperature

To improve the oil yield of Chuanxiong volatile oils and keep their quality same as that of oils prepared by steam distillation (SD) for short), a new technology of coupling water extraction and rectification (WER for short) was applied to isolate Chuanxiong volatile oils. The oil yield, as well as GC-MS chromatogram of the volatile oils extracted by WER and SD were compared. The oil yield of WER (0.50%) was that of SD (0.20%). There were 21 common constituents in the two kinds of volatile oils, which occupied 98.94% of the oils extracted by SD, 98.80% of that by WER, respectively. Moreover, the relative percentage of the common constituents was almost the same. The results indicate that WER could not only increase the oil yield of Ligusticum chuanxiong, but also keep the quality of the oils accord with that extracted by SD.
Distillation ; methods ; Drugs, Chinese Herbal ; analysis ; isolation & purification ; Ligusticum ; chemistry ; Oils, Volatile ; analysis ; isolation & purification ; Plant Oils ; analysis ; isolation & purification ; Water ; chemistry