The implication of phenolic acid matrix effect on the volatility of ethyl acetate in alcohol-free wine model: Investigations with experimental and theoretical methods

2022 ◽  
pp. 132114
Author(s):  
Bo Zhang ◽  
Xiao Shi ◽  
Yu Zhang ◽  
Qiang Wang ◽  
Pan-pan Zhou ◽  
...  
Author(s):  
Noor Sabah Jaafar ◽  
Iman S Jaafar ◽  
Zainab S Noori

  Cressa cretica (Shuwwayl) is a halophytic that belongs to Convolvulaceae, naturally grown in the Middle East including Iraq. Traditionally the plant is used as a paste for sore treatment, also it is used for fever, jaundice, and other illness. Regarding nonclinical use it is used as goat, sheep, and camel feed also as an oil source. Flavonoids including quercetin, kamepferol, apigenin, and their glycosides, phenolic acid as chlorogenic acid, and phytosterols mainly ?–sitosterol were the most important phytochemicals that were detected in this halophyte. Crude ethanolic, methanolic extracts and ethyl acetate fraction of the areal parts were used in clinical studies and demonstrated various effects as hepatoprotective, cytotoxic, and genotoxic effect. In molecular docking studies, 3,5-dicaffeoylquinic acid showed antiviral effect vs SARS-CoV-2 (sever acute respiratory syndrome corona virus-2). The purpose of this review was to clarify and discuss all aspects regarding Cressa cretica.


Author(s):  
Hayder T Hasan ◽  
Enas J Kadhim

Objective: The aim of this study was to investigate chemical constituents of leaves and seeds of Corchorus olitorius since no phytochemical investigation had been done previously in Iraq.Methods: Leaves and seeds of C. olitorius were defatted by maceration in hexane for 24 h. The defatted plant materials were extracted using Soxhlet apparatus, the aqueous methanol 85% as a solvent extraction for 24 h, and fractionated by petroleum ether, chloroform, ethyl acetate, and n-butanol. The ethyl acetate, n-butanol, and n-butanol after hydrolysis fractions for each part (leaves and seeds) were analyzed by high-performance liquid chromatography (HPLC) and high-performance thin-layer chromatography (HPTLC) for its phenolic acid and flavonoid contents. The petroleum ether fraction from the leaves was analyzed using Gas chromatography/mass spectrometer (GC/MS). Flavonoids and phenolic acid derivative were isolated from the ethyl acetate of leaf fraction and n-butanol after hydrolysis fraction of the seeds and identified by mass spectrometry, infrared, HPLC, and HPTLC.Results: The different chromatographic and spectroscopic results revealed the presence of luteolin, quercetin, astragalin, isoquercetin, catechins, and 3,5-dicaffeoylquinic acid (3,5-DCQA) in both leaves and seeds of C. olitorius and also 17-octadecynoic acid, 9-octadecanoic acid (oleic acid), hexadecenoic acid (palmitic acid), 9,12-octadecanoic acid (linoleic acid), octadecadien-1-ol (β-sitosterol), and α-tocopherol (Vitamin E) in the petroleum ether fraction of C. olitorius leaves.Conclusion: The results of the current study proved the presence of 3,5-DCQA, astragalin, and isoquercetin in the ethyl acetate fraction of C. olitorius leaves and catechin in the n-butanol after hydrolysis fraction of C. olitorius seeds. 


Author(s):  
Ashwaq T Kareem ◽  
Maha N. Hamad

    The plant Borago officinalis, which belongs to the Boraginaceae family and Celebrated as borage, is one of the useful medicinal plants cultivated in Iraq. It was used in olde medicine in Iraq, Irane, Syria and Europe for management of various diseases. It is commonly used as an atonic, tranquilliser, management of cough, sore throat, pneumonia, swelling, inflammatory diseases, antioxidant, and anticancer. This project provides the first comprehensive research done in Iraq to study the phytochemicals and the methods of extraction and isolation of active constituents from Borago officinalis cultivated in Iraq. The plant was harvested in spring from AL-Rifai, Nassiriyah city, IRAQ in February 2019.were washed carefully, dried under dark, and milled in a mechanical grinder to a fine powdere then measure the weight of the plant.The plant was extracted by cold extraction methods using (85%absolute methanol ) solvent for three days then Fractionation was done by petrollium ethere, chloroform, ethyl acetate and n-butanol(n.b) to separate the active constituentse according  to the change in polaritiese. The phytochemical screening exposed the presence of, phenols, tannins, fatty acid, in the plant's Ethyl acetate fraction, n-butanol fraction was usedfor identification and isolationof phenolic compoundsby by TLC, PLC HPLC andLC/mass. The Phenolic acid (Sinapic acide, Rosmarinic acides,Caffeic acid) were seperated and purified by PLC. The isolated compounds were subjected to several chemical chromatographic and spectral analytical techniques for their identification, such as TLC, PLC, HPLC, UV, and  LC/mass.


Author(s):  
Omer H Ahmed ◽  
Maha N Hamad ◽  
Noor S Jaafar

  Objective: The aim of our study was to investigate chemical constituents of leaves of Chenopodium murale since no phytochemical investigation had been done previously in Iraq.Methods: Leaves of C. murale were macerated in absolute methanol for 2 days and fractionated by petroleum ether, chloroform, ethyl acetate, and n-butanol. The ethyl acetate fraction was analyzed by high-performance liquid chromatography (HPLC) and high-performance thin-layer chromatography (HPTLC) for its phenolic acid and coumarins contents. Coumarin derivative and phenolic acid were isolated from this fraction and identified by gas chromatography/mass spectrometry, infrared, ultraviolet, HPLC, and HPTLC.Results: The different chromatographic and spectroscopic results revealed the presence of gallic acid and coumarin.Conclusion: The results of the current study showed the presence of scopoletin and gallic acid in the ethyl acetate fraction of C. murale.


2008 ◽  
Vol 3 (2) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Taha S. El-Alfy ◽  
Hamida M.A. El-Gohary ◽  
Nadia M. Sokkar ◽  
Amani A. Sleem ◽  
Dalia A. Al-Mahdy

A new flavonoid glycoside, 5,7,4′-trihydroxy-3,6-dimethoxyflavone-3′- O-β-D-xylopyranoside (axillarin-3′- O-β-D-xylopyranoside), was isolated from the ethyl acetate fraction of the ethanolic extract of Platanus orientalis L. leaves, along with nine known flavonoid aglycones and glycosides, a phenolic acid and a phenolic acid derivative. Their structures were established on the basis of detailed spectral analysis. The total ethanolic, aqueous and ethyl acetate extracts of the leaves were tested for antihepatotoxic, antioxidant and cytotoxic activities. The extracts were found to be effective in protection against CCl4 liver injury by significantly lowering alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) levels. The extracts also significantly restored depleted levels of glutathione, indicating a strong antioxidant activity, while they showed variable cytotoxic activity.


Author(s):  
Koushik Mondal ◽  
Avinash Kumar ◽  
B. Rajakumar

The gas phase kinetics of the reactions of IO radicals with ethyl formate (EF) and ethyl acetate (EA) were investigated experimentally using cavity ring-down spectroscopy (CRDS). IO radicals were generated...


Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
M Diab-Assaf ◽  
RI Taleb ◽  
W Shebaby ◽  
A Mansour ◽  
CJ Moussa ◽  
...  

Planta Medica ◽  
2006 ◽  
Vol 72 (11) ◽  
Author(s):  
RM Marçal ◽  
DM Ptak ◽  
RR Krempser ◽  
MR Krempser ◽  
SV Floresta ◽  
...  

ENTOMON ◽  
2019 ◽  
Vol 44 (2) ◽  
pp. 117-126
Author(s):  
Rhitayu Chakraborti ◽  
Probir Kumar Bandyopadhyay

Study to assess the larvicidal property of Lantana camara leaves against Aedes triseriatus larvae found that the ethyl acetate extract had profound larvicidal action with the crude extract having a LC50 value of 409.831ppm. GC-MS analysis of the ethyl acetate extract confirmed the presence of twenty-one compounds out of which beta-caryophyllene covered the highest percentage of the chromatogram area. Further tests with beta-caryophyllene against the mosquito larvae proved it to be the active ingredient of L. Camara with a LC50 value of 104.243ppm.


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