Gas chromatography-mass spectrometry analysis and antimicrobial, antioxidant and anti-cancer activities of essential oils and extracts of Stachys schtschegleevii plant as biological macromolecules.
01 May 2019-International Journal of Biological Macromolecules (Int J Biol Macromol)-Vol. 128, pp 718-723
TL;DR: The plant screened good antimicrobial, antioxidant and anti-cancer activities for its essential oil and ethyl acetate extract and showed antioxidant activity more than aqueous part.
About: This article is published in International Journal of Biological Macromolecules.The article was published on 2019-05-01. It has received 30 citations till now. The article focuses on the topics: Ethyl acetate & Essential oil.
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TL;DR: In this article, a pectin and polyphenol-rich extracts from Tommy Atkins mango peels were used to make active films for food packaging and/or coating applications.
22 citations
TL;DR: This review comprehensively enlightened the micro/nanoemulsion loaded with EOs to improve the physical—chemical and microbiological stability of various EOs, and further application of these EOs loaded systems in the food systems.
Abstract: The production of safe foods with little or no artificial preservatives is one of the foremost leading challenges for food manufacturing industries because synthetic antimicrobial agents and chemical food additives can cause severe negative effects on human health. However, there is an ever-increasing interest by consumers towards natural sources that have been aroused recently, and this increased consumer demand for safe food products has forced the food industries to use natural herbal and plant origins preservatives instead of synthetic preservatives for the production of safe foods. Traditionally, essential oils (EOs) obtained from numerous plant sources have been extensively encouraged for their putative health-promoting biological activities. The EOs are composed of complex mixtures encompassing copious individual compounds, which have been extracted by many methods. These diverse compounds display significant biological activities such as antioxidant and antimicrobial through different mechanisms. Nevertheless, their poor solubility in water, oxidation susceptibility, and volatility limit their use. To overcome these constraints, encapsulation is one of the best approaches to preserve the biological activities of EOs and minimize their effects on food sensory qualities. Herein, we have comprehensively enlightened the micro/nanoemulsion loaded with EOs to improve the physical—chemical and microbiological stability of various EOs, and further application of these EOs loaded systems in the food systems. This review confers the importance of EOs in terms of their main components, chemical and biological properties, including mode of action, effectiveness, synergistic effects as antimicrobials, and potential applications in the food system as a preservative.
21 citations
TL;DR: The literature supports the ethnomedicinal uses of P. sarmentosum for the treatment of cold, gastritis, and rheumatoid joint pain, and further confirms its relatively new pharmacological activities, including anti-inflammatory, antineoplastic, and antipyretic activities.
18 citations
TL;DR: In this paper, the authors evaluated chemical profile, antimicrobial and cytotoxic activity of Baccharis dracunculifolia extract against bacteria (Gram-positive and Gram-negative).
Abstract: Due to consumers' increasingly negative perceptions of synthetic preservatives, interest and research on plants and their natural compounds have increased as a particularly attractive starting point for use in food preservation, new medicines, and replace additives and synthetic compounds added in cattle feed. In the present study were evaluated chemical profile, antimicrobial and cytotoxic activity of Baccharis dracunculifolia extract against bacteria (Gram-positive and Gram-negative). Twelve compounds were quantified by UHPLC-HRMS, Germacrene B, Naringenin, Kaempferol, Artepillin C, α-Pinene, Hydroxycinnamic acid, Apigenin, Kaempferide, Limonene, Phenylethanol and β-caryophyllene were confirmed. The extract showed no toxicity at the concentrations evaluated, presented better antimicrobial action, against Gram-positive bacteria, for both bacteria Staphylococcus aureus and Bacillus subtilis the values in MIC/MBC (125 and 250 μg/mL) and Bacillus cereus MIC/MBC (250 and 500 μg/mL), when evaluated the concentration of 4x MIC, we got achieved significant reductions between 5.00 the 5.58 log CFU/mL. This is the first report investigating the potential of the extract of Baccharis dracunculifolia, collected in the city of Maringa, Parana. Our results contribute to a better understanding of the chemical profile and antimicrobial activity of this extract providing evidence for further studies and increased application by industries.
13 citations
SIDI1
TL;DR: The first study attempting to determine the biological active compounds, mineral elements content and in vitro antioxidant activities of two Algerian endemic taxa (Stachys marrubiifolia Viv. and Lamium flexuosum Ten), as well as evaluating the solvent influence on the studied parameters.
12 citations
References
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TL;DR: Findings suggest that, at least in part, the encountered beneficial effects of essential oils are due to prooxidant effects on the cellular level.
6,174 citations
TL;DR: This analysis suggests that the total phenols assay by FCR be used to quantify an antioxidant's reducing capacity and the ORAC assay to quantify peroxyl radical scavenging capacity, to comprehensively study different aspects of antioxidants.
Abstract: This review summarizes the multifaceted aspects of antioxidants and the basic kinetic models of inhibited autoxidation and analyzes the chemical principles of antioxidant capacity assays. Depending upon the reactions involved, these assays can roughly be classified into two types: assays based on hydrogen atom transfer (HAT) reactions and assays based on electron transfer (ET). The majority of HAT-based assays apply a competitive reaction scheme, in which antioxidant and substrate compete for thermally generated peroxyl radicals through the decomposition of azo compounds. These assays include inhibition of induced low-density lipoprotein autoxidation, oxygen radical absorbance capacity (ORAC), total radical trapping antioxidant parameter (TRAP), and crocin bleaching assays. ET-based assays measure the capacity of an antioxidant in the reduction of an oxidant, which changes color when reduced. The degree of color change is correlated with the sample's antioxidant concentrations. ET-based assays include th...
5,354 citations
Book•
01 Dec 2001TL;DR: In this paper, the authors show that a compound is identified by a chromatographic peak that has a retention-time in the range of 5589 to 562 min-time.
Abstract: In the Preface to Identification of Essential Oil Components by Gas Chromatography/Quadrupole Mass Spectroscopy [sic], Robert P. Adams, the author, states that he began research on essential oils in 1966. This may account for the reason that he persistently uses the term mass spectroscopy rather than mass spectrometry (Robert, there are no light bulbs inside those mass spectrometers). Again, as was the case with the second edition, there is no indication that this is a third edition; but, as in the second edition, the author clearly acknowledges this fact in the Preface. This edition has spectra for 1606 compounds. Adams takes some liberty in saying that this is 400 more than the previous edition, which actually had spectra for 1252 compounds. Because the spectra were acquired on an HP 5970 Mass Selective Detector (spectra in the previous editions were acquired using a Finnigan ITD800 internal ionization quadrupole ion trap instrument), the display format of the spectra corresponds to that of the Agilent (formerly Hewlett-Packard) ChemStation mass spectral display rather than the Finnigan ITD-800 (now Thermo Electron). The ChemStation has the ordinate of the spectrum labeled in ion abundance rather than percent abundance or relative percent intensity. One of the curiosities of these spectra is that all exhibit exactly the same maximum abundance. As with the previous edition, each spectrum has a structure showing chirality were appropriate, retention time on a DB-5 column, and Kovat’s index. Details are provided about the GC column and the operating conditions of the GC as well as the sample injected into the GC (volume, split ratio, and the internal standard used for retention time). The only important parameter missing from the operation of the mass spectrometer is the rate at which the data are acquired (the number of spectra per second). Another important factor would be the identification of the ChemStation version used. ChemStation has two very different versions of Autotune, and the only way to distinguish between which version was used is by the ChemStation version number. Adams states that data were acquired after using the instrument’s “Autotune” to set the operating conditions. As was criticized in the review of the second edition, this book has some significant shortcomings in the brief text portion. They go beyond the criticism of calling a mass spectral peak an ion. In the discussion of whether or not mass spectra acquired with a quadrupole ion trap (QIT) and a transmission quadrupole are comparable, the author displays what he says are spectra of 3-methyl4-heptone obtained on both instruments. The spectrum displayed that was reported to have been obtained on the transmission quadrupole is not that of 3-methyl-4heptone but that of 2-methyl-4-heptone. The telltale peak at m/z 58, which is 30% of the intensity of the peak at m/z 57 (the base peak), is the giveaway. This m/z 58 peak is obviously missing in the spectrum obtained with the QIT and is also missing from a spectrum for 3-methyl-4-heptone obtained on a transmission quadrupole that appeared in the second edition. Another area exhibiting a limited understanding of electron ionization mass spectrometry is the comparison of spectra of tricyclene. The author points to the fact that the peak at m/z 77 is 102% of the intensity of the peak at m/z 79 in the spectrum obtained with the QIT, whereas the peak at m/z 77 is 98% of the peak at m/z 79 in the spectrum obtained with the transmission quadrupole. These relative intensity differences are insignificant, especially when the intensity of the peak at m/z 77 relative to the intensity of the base peak is about the same in both spectra ( 40%). More effort could have been put into the proofing of these few pages of text. It is stated that a compound is represented by a chromatographic peak that has a retention-time range of 5.589 to 5.67. Then, in an attempt to show how the recorded retention time is determined using the equation “5.89 min 0.03 min 5.62 min” is presented, it is obvious the “5.89” in the equation should have been “5.589”, but this should have been caught in the proofing stage. The references to journal articles would be more valuable if they included titles, which is now the requirement for the Journal of the American Society for Mass Spectrometry. This is especially true for the M. P. Clay reference that cites an unnamed article that appeared in Mass Spec Source, an obscure organ published by Scientific Instrument Services in Ringoes, NJ (http://www.sisweb.com). As was the case with the second edition, the “Appendices” consist of an alphabetical listing of compounds (mostly common names) with their retention times and Kovat’s index on a DB-5 capillary GC column Published online September 28, 2005
3,228 citations
Journal Article•
TL;DR: The use of the stable free radical diphenylpicrylhydrazyl (DPPH) for estimating antioxidant activity and its application in antioxidant research is described.
Abstract: Molyneux, P. The use of the stable free radical diphenylpicrylhydrazyl (DPPH) for estimating antioxidant activity
2,519 citations
TL;DR: In this article, the authors evaluated the antibacterial and antioxidant properties of essential oil and methanol extracts from a unique and endemic plant, Zataria multiflora Boiss.
382 citations