scholarly journals ALIPHATIC AND TRITERPENOIC PRODUCTS OF ETHER EXTRACTS SAPONIFICATION OF POPULUS NIGRA L.

2019 ◽  
pp. 109-118
Author(s):  
Tat'yana Petrovna Kukina ◽  
Ivan Aleksandrovich Elshin ◽  
Ol'ga Iosifovna Salnikova ◽  
Il'ya Vladimirovich Eltsov
Keyword(s):  
Mass Spectrometry ◽  
Raw Materials ◽  
Food Additives ◽  
Gas Content ◽  
Gas Chromatography Mass Spectrometry ◽  
Cosmetic Products ◽  
Male And Female ◽  
Extraction Solvent ◽  
Acidic Compounds ◽  
Butyl Methyl Ether

Our investigation deals with extractives which content about 15% of whole biomass. The extracts obtained from poplar bark and foliage, and purified phytochemicals arising from these extracts, can find various applications, e.g., as biopharmaceuticals, food additives and nutraceuticals, biopesticides, and cosmetic products. Composition of neutral lipophylic compounds of poplar bark and foliage was studied as far as inflorescences of male and female plants and pollen. Tert-butyl methyl ether (TBME) was used as an extraction solvent for raw materials having all the advantages of diethyl ether, but devoid of its disadvantages. It does not form peroxides and does not create increased gas content due to the higher boiling point. TBME-extracts were investigated by gas chromatography–mass-spectrometry (GC-MS). We found more than 40 lipophilic neutral constituents from raw materials of poplar bark and foliage. 60 lipophilic neutral constituents from raw materials of florescences and pollen including alkanes, sterols, aliphatic and triterpenoic alcohols as far as 34 acidic compounds were identified by GC-MS. The content of inflorescences and pollen extracts differs from bark and foliage constituents.

scholarly journals BIOACTIVE COMPONENTS OF ETHEREAL EXTRACT OF WOOD GREENING SEA BUCKTHORN HIPPOPHAE RHAMNOIDES L.

2019 ◽  
pp. 157-164
Author(s):  
Татьяна (Tat'yana) Петровна (Petrovna) Кукина (Kukina) ◽  
Дмитрий (Dmitriy) Николаевич (Nikolaevich) Щербаков (Shcherbakov) ◽  
Константин (Konstantin) Викторович (Viktorovich) Геньш (Gensh) ◽  
Нина (Nina) Витальевна (Vital'evna) Пантелеева (Panteleyeva) ◽  
Екатерина (Ekaterina) Анатольевна (Anatol'evna) Тулышева (Tulysheva) ◽  
...  
Keyword(s):  
High Performance ◽  
Raw Materials ◽  
Sea Buckthorn ◽  
Gas Content ◽  
Gas Chromatography Mass Spectrometry ◽  
Triterpene Alcohols ◽  
Extraction Solvent ◽  
Leafy Shoots ◽  
Sea Buckthorn Oil ◽  
High Yields

The composition of lipophilic components of sea buckthorn leafy shoots, a large tonnage waste in the production of sea buckthorn oil and during renewing the cultural plantings of sea buckthorn, was studied. Tert-butyl methyl ether (TBME) was used as an extraction solvent for raw materials having all the advantages of diethyl ether, but devoid of its disadvantages. It does not form peroxides and does not create increased gas content due to the higher boiling point. The chemical composition of the TBME extract of sea buckthorn leafy shoots was studied by gas chromatography–mass-spectrometry and high-performance liquid chromatography. Seventy-four neutral and thirty-eight acidic components, including polyprenols, dolichols, triterpene alcohols and acids, sterols, were identified. TBME as an extragent provides more high yields of bioactive triterpenoic acids and diols including uvaol, eritrodiol and betulin in comparison with n-hexane. These compounds can increase some useful properties of obtained extract.

scholarly journals Aromatic Profiles of Essential Oils from Five Commonly Used Thai Basils

Foods ◽  
2018 ◽  
Vol 7 (11) ◽  
pp. 175 ◽  
Author(s):  
Tibet Tangpao ◽  
Hsiao-Hang Chung ◽  
Sarana Sommano
Keyword(s):  
Mass Spectrometry ◽  
Essential Oils ◽  
Raw Materials ◽  
Principal Component ◽  
Methyl Eugenol ◽  
Gas Chromatography Mass Spectrometry ◽  
Ocimum Sanctum ◽  
Chemical Compositions ◽  
Ocimum Species ◽  
Holy Basil

The research objectives of this study are to analyse the volatile compositions of different basil types available in Thai markets and to descriptively determine their aromatic qualities. Essential oils were hydro-distillated from fresh leaves of two Holy basil (Ocimum sanctum) varieties namely, white and red and other basil species, including Tree basil (O. gratissimum), Thai basil (O. basilicum var. thyrsiflorum), and Lemon basil (O. citriodorum). Oil physiochemical characteristics and volatile chromatograms from Gas Chromatography–Mass Spectrometry (GC-MS) were used to qualitatively and quantitatively describe the chemical compositions. Estragole, eugenol, and methyl eugenol were among the major volatiles found in the essential oils of these basil types. Classification by Principal Component Analysis (PCA) advised that these Ocimum spp. samples are grouped based on either the distinctive anise, citrus aroma (estragole, geranial and neral), or spice-like aroma (methyl eugenol, β-caryophyllene, and α-cubebene). The essential oils were also used for descriptive sensorial determination by five semi-trained panellists, using the following developed terms: anise, citrus, herb, spice, sweet, and woody. The panellists were able to differentiate essential oils of white Holy basil from red Holy basil based on the intensity of the anisic attribute, while the anise and citrus scents were detected as dominant in the Lemon basil, Tree basil, and Thai basil essential oils. The overall benefit from this research was the elucidation of aromatic qualities from Thai common Ocimum species in order to assess their potential as the raw materials for new food products.

Comparative Analysis of the Aroma Compounds of Muscat Hamburg Dry White Wines from Different Wine Regions in China

2012 ◽  
Vol 554-556 ◽  
pp. 1581-1584 ◽  
Author(s):  
Yan Cui ◽  
Wei Wang ◽  
Fu Qing Zhang ◽  
Wen Lv
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Comparative Analysis ◽  
Volatile Compounds ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Raw Materials ◽  
Gas Chromatography Mass Spectrometry ◽  
Higher Alcohols ◽  
White Wines

The aroma compoumds of Muscat Hamburg dry white wines from three different wine regions, made with the same brewing technology, were determined by head space solid phase microextraction coupled with gas chromatography mass spectrometry (HS-SPME-GC/MS), with grapes harvested in 2010 from Tianjin Hangu, Heibei Changli and Shandong Pingdu regions as raw materials. Total 58 volatile compounds were identified and 23 componds were quantified. The results show that the wines from Hangu regions contained relatively high levels of terpenes and esters, and lower contents of higher alcohols,which contributed to the wines rich floral and fruity aromas and sweet, musky flavors.

scholarly journals Detection of DEHP in beverages sold in Canada using gas chromatography-mass spectrometry

2016 ◽  
Author(s):  
Nicole Truong ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Vanessa Karakilic ◽  
Kevin Soulsbury
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Body Weight ◽  
Weight Control ◽  
Food Additives ◽  
Daily Intake ◽  
Food Product ◽  
Gas Chromatography Mass Spectrometry ◽  
Food Items ◽  
Chromatography Mass Spectrometry

  Phthalates are a class of plasticizing chemicals used to improve the flexibility of soft plastics (1, 6, 12, 15). As such, they have drawn increased attention as food contact substances (1, 10, 14), mostly entering food items from packaging materials (1, 8, 10, 14). Even though they had been approved as indirect food additives in Europe and the U.S. (1), the discovery of high concentrations of di(2-ethyl-hexyl) phthalate (DEHP), also known as bis 2-ethylhexyl phthalate (BEHP) (12, 15), in a probiotic food product by a scientist from Taiwan in April 2011 initiated the world’s greatest health safety efforts (7). Investigators found that DEHP, along with other phthalates, were deliberately added to food products in replacement of the approved food additives, which would normally be added to emulsify the components in the drinks to achieve a natural and appealing appearance (7, 12, 15). This contamination event has been known as the 2011 Taiwan Food Scandal, where processed food items such as sports drinks, concentrated juice beverages, tea drinks, jam or jelly and food supplements were adulterated with phthalates, a harmful class of chemical compounds. Consequently, ingestion of these harmful compounds may result in adverse health affects such as endocrine disruption, malformation of reproductive organs, infertility and abnormal neurodevelopment (12). Many products made it across the border to 22 different countries (15, 17) including Canada and U.S. (17). Since then, the Taiwanese government made improvements to the food industry regulations (15, 17). This study was aimed to determine if DEHP was present, and compared to the European Food Safety Authority (EFSA) DEHP tolerable daily intake (TDI) of 0.05 mg/kg body weight (bw)/day (12, 17), in 30 different drinks of imported and domestic brands sold in Canada. For comparison purposes, the author completed calculations based on the average adult (over 18 years old) body weight of 70 kg, according to EFSA (41). Using liquid/liquid extraction followed by Gas Chromatography-Mass Spectrometry (GC-MS), 30 beverages were tested and analyzed for the presence of DEHP. Low concentrations of DEHP was detected in 3 of the beverages and none in the other 27 beverages tested on a calibrated instrument. The concentrations detected for the 3 beverages were lower than the TDI for a 70 kg body weight. Control samples were used to ensure method validity.  

scholarly journals Analysis of diclofenac in water samples using in situ derivatization-vortex-assisted liquid-liquid microextraction with gas chromatography-mass spectrometry

2018 ◽  
Vol 68 (3) ◽  
pp. 313-324 ◽  
Author(s):  
Senar Aydin ◽  
Mehmet Emin Aydin ◽  
Fatma Beduk ◽  
Arzu Tekinay ◽  
Havva Kilic
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Water Samples ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Extraction Solvent ◽  
Real Water Samples ◽  
One Step

Abstract A novel micro-extraction technique for a rapid and sensitive analysis of diclofenac (DCF) in water samples has been developed. DCF was derivatized and extracted simultaneously using vortex-assisted liquid-liquid micro-extraction (VALLME) prior to gas chromatography with mass spectrometry detection. The effects of extraction solvent volume, extraction and derivatization time and ionic strength of the sample were studied using 23 factorial experimental design. The optimum extraction conditions were as follows: 200 μL of chloroform, 25 μL of N-methyl-N-trimethylsilyl-trifluoroacetamide (MSTFA) derivatization reagent, vortex extraction and derivatization time 5 min at 3000 rpm. The extraction recovery for different fortification levels was 98 %. Also, the proposed micro-extraction method exhibited results comparable with the solid phase extraction of real water samples. The proposed one-step VALLME and derivatization method is simpler and faster than the conventional extraction and derivatization methods used for the determination of DCF in real water samples.

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