Isolation and determination of optically pure carvone enantiomers from caraway (Carum carvi L.), dill (Anethum graveolens L.), spearmint (Mentha spicata L.) andMentha longifolia (L.) Huds.

1987 ◽  
Vol 2 (3) ◽  
pp. 95-97 ◽  
Author(s):  
Uzi Ravid ◽  
Michal Bassat ◽  
Eli Putievsky ◽  
Vera Weinstein ◽  
Raphael Ikan
Keyword(s):  
Anethum Graveolens ◽  
Mentha Spicata ◽  
Carum Carvi ◽  
Optically Pure

First Preparation and Structural Determination of Optically Pure Cyclic Polysulfides, 6,10-Diethyl Trithiolo[h]benzopentathiepin Monooxides

1999 ◽  
Vol 28 (12) ◽  
pp. 1305-1306 ◽  
Author(s):  
Takeshi Kimura ◽  
Yasushi Kawai ◽  
Satoshi Ogawa ◽  
Ryu Sato
Keyword(s):  
Structural Determination ◽  
Optically Pure

scholarly journals DEvELopMENT of TEOHNiQuEs FoR THE DETERMiNATioN oF MoisTuRE (Loss oN DRYING) oF MEDiOiNAL PLANT RAW MATERiALS oF MoRPHoLoGiOAL group “FRUiT” by infrared thermogravimetric method

2019 ◽  
Vol 19 (1-2) ◽  
pp. 13-18
Author(s):  
D. A Zhdanov ◽  
V. B Braslavsky
Keyword(s):  
Medicinal Plant ◽  
Russian Federation ◽  
Raw Materials ◽  
The State ◽  
Moisture Loss ◽  
Anethum Graveolens ◽  
Thermogravimetric Method ◽  
Plant Raw Materials ◽  
The Russian Federation

The article is devoted to the development of new and perspective for the State Pharmacopoeia of the Russian Federation (SP RF) techniques for determining of the moisture (loss on drying) of medicinal plant raw materials of the morphological group “Fruit” and medicinal plant preparations by the use of infrared thermogravimetric (IRTGM) method. The techniques for determination of moisture (loss on drying) IRTGM-method as exemplified by the fruit of the following medicinal plants: Silybum marianum (L.) Gaertn., Rosa cinnamomea L. and Anethum graveolens L. were developed. The comparable results for determining of the moisture (loss on drying) of the medicinal plant raw materials of investigated plants were obtained by means of two methods: IRTGM and pharmacopoeial method, which allow us to recommend the developed techniques for inclusion into the relevant monographs of the State Pharmacopoeia of the Russian Federation.

The First X-ray Structure Determination of an Optically Pure Bismuthane

1998 ◽  
Vol 17 (9) ◽  
pp. 1711-1715 ◽  
Author(s):  
Toshihiro Murafuji ◽  
Kohichi Satoh ◽  
Yoshikazu Sugihara ◽  
Nagao Azuma
Keyword(s):  
Structure Determination ◽  
X Ray ◽  
Optically Pure

Circular Dichroism Determination of the Conformation of Optically Pure 1-(1-Naphthyl)ethylamino-Substituted 1,3,5-Triazine Derivatives

1998 ◽  
Vol 63 (24) ◽  
pp. 8765-8768 ◽  
Author(s):  
Anna Iuliano ◽  
Emanuela Franchi ◽  
Gloria Uccello-Barretta ◽  
Piero Salvadori
Keyword(s):  
Circular Dichroism ◽  
Triazine Derivatives ◽  
Optically Pure ◽  
Circular Dichroïsm

scholarly journals Determination of Pesticide Residues in Most Commonly Consumed Leafy Vegetables in Riyadh Region (Al-Kharej Province)

2019 ◽  
Vol 28 (2) ◽  
pp. 63-73
Author(s):  
Turki Kh. Faraj Turki Kh. Faraj
Keyword(s):  
Pesticide Residues ◽  
Spinacia Oleracea ◽  
Leafy Vegetables ◽  
Petroselinum Crispum ◽  
Anethum Graveolens ◽  
Kingdom Of Saudi Arabia ◽  
Liquid Liquid Extraction ◽  
Residue Levels ◽  
Higher Doses

A total of 81 samples of various leafy vegetables viz., Rocket (Eruca sativa), Lettuce (Lactuca sativa), Coriander (Coriandrum sativum), Corchorus (Corchorus olitorius), Parsley (Petroselinum crispum), Spinach (Spinacia oleracea), Radish (Raphanus sativus), Dill (Anethum graveolens), Mint (Mentha sachalinensis) and Green onions (Allium cepa) were collected from 20 different areas in Riyadh region of the Kingdom of Saudi Arabia. Liquid-Liquid Extraction of extraction partitioning method and confirmation by gas chromatograph-mass spectrometer for the presence of various pesticide residues was performed. Pesticide residues were detected in all the collected samples with varying concentrations. A variety of pesticides including organochlorines, organophosphates, pyrethroids, carbamates, herbicides, acaricides and insecticides have been identified in the samples. While the residue levels were low for most pesticides, higher levels of chlorpyrifos (0.123 mg/kg and resmethrin (0.1 mg/kg) were found in Rocket, carbaryl (0.92 mg/kg) in spinach and corchorus (0.116 mg/kg), permethrin (total cis + trans permethrin) inlettuce (0.103 mg/kg) and coriander (0.126 mg/kg), and cypermethrin in parsley (0.126 ppm). The highest maximum residue limit (MRL) values of pesticide residues on leafy vegetables of 0.10 mg/kg were observed for carbaryl in Spinach and Corchorus, whereas in Parsley an MRL of 0.5 mg/kg was found. The current research shows that in some leafy vegetables, higher doses of pesticides were found.

Radiochemical neutron activation analysis for the determination of selenium in Mentha spicata L. samples collected from Djelfa, Algeria region

2020 ◽  
Vol 108 (3) ◽  
pp. 217-222 ◽  
Author(s):  
Mohammed Messaoudi ◽  
Samir Begaa
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Radiochemical Neutron Activation Analysis ◽  
Focus Of Attention ◽  
Selenium Content ◽  
Established Method ◽  
Trace Level ◽  
Mentha Spicata

AbstractSelenium (Se) has been a focus of attention as an important micronutrient with its impact on human health, with there being consequences either due to excess or deficiency in intake. Radiochemical neutron activation analysis (RNAA) is well established method for determination of a number of elements at trace level concentrations with high sensitivities. In this work, we used the RNAA method for determination of selenium content in Mentha spicata L. The result of this study was compared with those samples from India and Serbia. The result obtained show that, Se concentration obtained in M. spicata L., is close to the minimal FAO recommendation.

scholarly journals Determination of essential oil content in caraway (Carum carvi L.) species by means of supercritical fluid extraction

2011 ◽  
Vol 49 (No. 6) ◽  
pp. 277-282 ◽  
Author(s):  
J. Sedláková ◽  
B. Kocourková ◽  
L. Lojková ◽  
V. Kubáň
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Small Samples ◽  
Fluid Extraction ◽  
Carum Carvi ◽  
Main Portion

Dependently on planting conditions caraway fruits contain 1–9% of essential oils consisting of about 30 compounds. Carvone and limonene account for the main portion, about 95%. To evaluate the quality of various registered caraway (Carum carvi L.) cultivars (Kepron, Prochan and Rekord) planted during 1998–2000, regarding the effect of sample grinding and preparation, plant treatment and time of harvest, the amounts of essential oil and the carvone/limonene ratio were determined. Both whole and ground caraway seeds were extracted. As obvious from the results, SFE is not suitable for the determination of essential oils in whole seeds since the results are lower in comparison with those of ground caraway. The way of grinding was also examined. Of the three mills used, a splintery mill VIPO seemed to be the most suitable. Further, the amount of essential oil was studied in caraway gathered at the beginning of maturation (sample A) and at full ripeness (sample B) of caraway seeds. It was found that the samples gathered at full ripeness (samples B) had more essential oil. It was also concluded that the use of the regulator Roundup Bioaktiv during caraway maturation to unite the ripening of achenes in the main umbel and the first-order umbels, and the use of fungicides (Alert S and Prelude 10) affected positively the amount of essential oil in caraway. Possibilities of SFE application for the essential oil determination in small samples gathered during breeding were investigated. The results were used as a one of the criteria during breeding. Classical way of the essential oil determination does not allow this option. An alternative method for the isolation and determination of essential oils – supercritical fluid extraction (SFE) – was investigated in this study.

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