scholarly journals Quantitative and Qualitative Characterization of Gentiana rigescens Franch (Gentianaceae) on Different Parts and Cultivations Years by HPLC and FTIR Spectroscopy

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Lu-Ming Qi ◽  
Ji Zhang ◽  
Yan-Li Zhao ◽  
Zhi-Tian Zuo ◽  
Hang Jin ◽  
...  
Keyword(s):  
Medicinal Plant ◽  
Ftir Spectroscopy ◽  
Metabolic Profile ◽  
Iridoid Glycosides ◽  
Ftir Spectra ◽  
Comprehensive Investigation ◽  
Gentiana Rigescens ◽  
Different Parts

Gentiana rigescens Franch (Gentianaceae) is a famous medicinal plant for treatments of rheumatism, convulsion, and jaundice. Comprehensive investigation of different parts and cultivation years of this plant has not yet been conducted. This study presents the quantitative and qualitative characterization of iridoid glycosides from G. rigescens performed by HPLC and FTIR spectroscopy techniques. The accumulations of loganic acid, swertiamarin, gentiopicroside, and sweroside were determined. Results indicated that their content and distribution in different parts and cultivation years exhibit great variations. Gentiopicroside was identified as the most abundant compound among iridoid glycosides and its highest level was observed in the root of 2-year-old plant. With respect to qualitative variation of metabolic profile, the 1800–800 cm−1 band of FTIR spectra successfully discriminated different parts and cultivation years with the aid of PLS-DA. In addition, combined with PLSR, the feasibility of FTIR spectroscopy for determination of gentiopicroside was investigated by selecting characteristic wavelengths (1800–800 cm−1), which presented a good performance with a residual predictive deviation (RPD) of 3.646. Our results suggested that HPLC and FTIR techniques can complement each other and could be simultaneously applied for comparing and analyzing different parts and cultivation years of G. rigescens.

scholarly journals Characterization of essential oils extracted from different aromatic plants by FTIR spectroscopy

2017 ◽  
Vol 74 (1) ◽  
pp. 37 ◽  
Author(s):  
Maria Ioana MORAR ◽  
Florinela FETEA ◽  
Ancuta Mihaela ROTAR ◽  
Melinda NAGY ◽  
Cristina Anamaria SEMENIUC
Keyword(s):  
Essential Oils ◽  
Ftir Spectroscopy ◽  
Ftir Spectra ◽  
Aromatic Plants

Four essential oils isolated from dried leaves of parsley, lovage, basil, and thyme were investigated by FTIR spectroscopy. FTIR spectra revealed characteristic key bands for the main compounds of tested essential oils.

Characterization of Fe2+ ions in Fe,H/SSZ-13 zeolites: FTIR spectroscopy of CO and NO probe molecules

2016 ◽  
Vol 18 (15) ◽  
pp. 10473-10485 ◽  
Author(s):  
János Szanyi ◽  
Feng Gao ◽  
Ja Hun Kwak ◽  
Márton Kollár ◽  
Yilin Wang ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Ftir Spectra ◽  
Probe Molecules

FTIR spectra of adsorbed NO and CO were used to characterize Fe2+ ions in different cationic positions in Fe,H/SSZ-13 zeolites.

scholarly journals Metabolic Profile Characterization of Different Thyroid Nodules Using FTIR Spectroscopy: A Review

Metabolites ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 53
Author(s):  
Vanessa Neto ◽  
Sara Esteves-Ferreira ◽  
Isabel Inácio ◽  
Márcia Alves ◽  
Rosa Dantas ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Metabolic Profile ◽  
Thyroid Nodules ◽  
Thyroid Tissue ◽  
Metabolome Analysis ◽  
Biochemical Alterations ◽  
Tumor Tissues ◽  
Different Types

Thyroid cancer’s incidence has increased in the last decades, and its diagnosis can be a challenge. Further and complementary testing based in biochemical alterations may be important to correctly identify thyroid cancer and prevent unnecessary surgery. Fourier-transform infrared (FTIR) spectroscopy is a metabolomic technique that has already shown promising results in cancer metabolome analysis of neoplastic thyroid tissue, in the identification and classification of prostate tumor tissues and of breast carcinoma, among others. This work aims to gather and discuss published information on the ability of FTIR spectroscopy to be used in metabolomic studies of the thyroid, including discriminating between benign and malignant thyroid samples and grading and classifying different types of thyroid tumors.

scholarly journals FTIR Spectroscopy Combined with Partial Least Square for Analysis of Red Fruit Oil in Ternary Mixture System

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
A. Rohman ◽  
Dwi Larasati Setyaningrum ◽  
Sugeng Riyanto
Keyword(s):  
Ftir Spectroscopy ◽  
Ternary Mixture ◽  
Edible Oils ◽  
Ftir Spectra ◽  
Partial Least Square ◽  
Least Square ◽  
Reliable Technique ◽  
Fruit Oil ◽  
Mixture System

FTIR spectroscopy is a promising method for quantification of edible oils. Three edible oils, namely, red fruit oil (RFO), corn oil (CO), and soybean oil (SO), in ternary mixture system were quantitatively analyzed using FTIR spectroscopy in combination with partial least square (PLS). FTIR spectra of edible oils in ternary mixture were subjected to several treatments including normal spectra and their derivative. Using PLS calibration, the first derivative FTIR spectra can be exploited for determination of RFO; meanwhile, the second derivative spectra were preferred for determination of CO and SO. The R2 values obtained for the relationship between actual and FTIR predicted values of RFO, CO, and SO were 0.9863, 0.9276, and 0.9693, respectively. The root mean square error of calibration (RMSEC) values obtained were 1.59, 1.72, and 1.60% (v/v) for RFO, CO, and SO, respectively. The result showed that FTIR spectroscopy offers accurate and reliable technique for quantitative analysis of RFO, CO, and SO simultaneously in ternary mixture systems. Besides, the developed method can be extended for analysis of CO and SO as adulterants in RFO.

Determination of phenolic compounds, in vitro antioxidant activity and characterization of secondary metabolites in different parts of Passiflora cincinnata by HPLC-DAD-MS/MS analysis

2018 ◽  
Vol 34 (7) ◽  
pp. 995-1001
Author(s):  
Ana Ediléia Barbosa Pereira Leal ◽  
Ana Paula de Oliveira ◽  
Raira Feitosa dos Santos ◽  
Juliana Mikaelly Dias Soares ◽  
Erica Martins de Lavor ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Secondary Metabolites ◽  
Ms Analysis ◽  
Different Parts ◽  
In Vitro Antioxidant Activity

scholarly journals Characterization of In(Ga,Al)As/GaAs metamorphic heterostructures for mid-IR emitters by FTIR photoreflectance spectroscopy

2021 ◽  
Vol 2086 (1) ◽  
pp. 012140
Author(s):  
D D Firsov ◽  
M Yu Chernov ◽  
V A Solov’ev ◽  
O S Komkov
Keyword(s):  
Electric Field ◽  
Ftir Spectroscopy ◽  
Critical Point ◽  
Free Carrier ◽  
Interband Transitions ◽  
Spectroscopy Technique ◽  
Fabry Perot ◽  
Contactless Control

Abstract Infrared photoreflectance (PR) spectra of In(Ga,Al)As/GaAs metamorphic heterostructures have been obtained using a novel photomodulation FTIR spectroscopy technique. An analysis of the PR spectra features allowed us to estimate the critical point energies corresponding to the direct interband transitions in various regions of the In(Ga,Al)As heterostructures, and distinguish the PR signals originating from Fabry-Perot interference. Observation of Franz-Keldysh oscillations originating from the InAlAs virtual substrate and an InGaAs waveguide layer has enabled determination of the built-in electric field intensities within the heterostructures. The obtained results open up possibilities for contactless control of free carrier concentration in In(Ga,Al)As/GaAs metamorphic heterostructures developed for growth of emitters of mid-IR spectral range.

scholarly journals Determination of the Lipid Compounds of Aristolochia Longa L. from Algeria

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Hamida Saida CHERIF ◽  
Fairouz SAIDI ◽  
Hadjila LAZOURI ◽  
Khadidja AID ◽  
Abdelhak ROUIBI ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Linoleic Acid ◽  
Essential Oil ◽  
Medicinal Plant ◽  
Palmitic Acid ◽  
Biochemical Characterization ◽  
Lipid Compounds

The present work joins in an initiative, for main objective the determination and the biochemical characterization of a medicinal plant with wide use in certain regions of Algeria. Samples of Aristoloche were collected from the region of Médéa (West of Algiers). By stream training we obtained essential oil and by hydro distillation concrete of the stalks, rhizomes and leaves. With theTLC we detect and confirm the presence of esters of Methyl in our samples. Besides, Gaz chromatography (CG), allowed us to determine the main group of fatty acids characterizing our essential oil and diluted concrete. An important proportion was showed by the palmitic acid with 22, 97 %, linoleic acid demonstrate a rate of 11, 50 %, oleic acid illustrate 7,24 %.

Characterization of fluoro-edenite by μ-Raman and μ-FTIR spectroscopy

2006 ◽  
Vol 70 (3) ◽  
pp. 291-298 ◽  
Author(s):  
C. Rinaudo ◽  
S. Cairo ◽  
D. Gastaldi ◽  
A. Gianfagna ◽  
S. Mazziotti Tagliani ◽  
...  
Keyword(s):  
Ftir Spectroscopy ◽  
Ftir Spectra ◽  
Mt Etna ◽  
Crystallographic Characteristics

AbstractThe prismatic variety of fluoro-edenite, a new amphibole found in lavas from Mt Etna in Biancavilla (Catania Province, Sicily, Italy), has been characterized by μ-Raman and μ-FTIR spectroscopy. The wavenumbers at which the bands are detected in the μ-Raman and μ-FTIR spectra are compared with tremolite, asbestos the chemical and crystallographic characteristics of which are very similar to those of fluoro-edenite.

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