scholarly journals Chemotypes of turmeric (Curcuma longa L.) essential oil from four different states of Brazil

2021 ◽  
pp. 1035-1042
Author(s):  
Franciele da Silva Quemel ◽  
Andira Pricila Dantas ◽  
Lincon Sanches ◽  
Ana Cláudia Graças Alves Viana ◽  
Eloísa Schneider Silva ◽  
...  
Keyword(s):  
Essential Oil ◽  
Chemical Constituents ◽  
Curcuma Longa ◽  
Principal Component ◽  
Chemical Compounds ◽  
Hierarchical Cluster ◽  
Main Compound ◽  
Group Iii ◽  
Group I ◽  
Chemical Class

Turmeric or curcuma (Curcuma longa L.) is a Zingiberaceae whose essential oil and coloring pigments obtained from the rhizome have been widely used in the food industry and medicine. This study aimed to extract and identify the chemical compounds found in C. longa essential oil from rhizomes collected in six different locations of Brazil. The oil extraction was carried out by hydrodistillation technique, using a Clevenger- type apparatus. The chemical constituents were identified by Gas Chromatography coupled to Mass Spectrometry (GC-MS). The principal component analysis (PCA) and the hierarchical cluster analysis (cluster)were done for the obtained data; and the composition of the studied accesses was verified. Three groups of chemotypes were obtained: group I was formed by the accesses of Campo Grande / Indígena-MS, Mara Rosa-GO, Campo Grande-MS and Perobal-PR, and had Ar-turmerone as its main compound; group II, formed by the access of Santa Tereza do Oeste-PR, presented α-costol and α-Phellandrene as the predominant compounds; and group III, the access of Holambra-SP, differed from the others regarding its essential oil chemical composition whose main agents were Curlone, Zingiberene, β-sesquiphellandrene, Humulene epoxide II, cis-α-trans-Bergamotol. The predominant chemical class in all accesses was hydrocarbon sesquiterpenes (Santa Tereza do Oeste-PR and Holambra-SP) and oxygenated sesquiterpenes (the others). This study evidenced the formation of three chemotypes

scholarly journals Seasonal variability of the essential oil of Hesperozygis ringens (Benth.) Epling.

2016 ◽  
Vol 76 (1) ◽  
pp. 176-184 ◽  
Author(s):  
C. G. Pinheiro ◽  
C. M. Machado ◽  
L. P. Amaral ◽  
D. T. Silva ◽  
C. A. A. Almeida ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Native Species ◽  
Chemical Constituents ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Flame Ionization ◽  
Four Seasons ◽  
Three Samples

Abstract This study was developed to evaluate the effect of seasonality on the yield and chemical composition of the essential oil (EO) of Hesperozygis ringens (Benth.) Epling, a native species from the Brazilian Pampa. Leaves were collected from four specimens of a single population in each of the four seasons for a year and were extracted in triplicate by hydro-distillation for 2 hours. The yield of EO (% w/w) was calculated on fresh weight basis (FWB), and the 16 oil samples were analyzed by gas chromatography coupled to mass spectrometry (GC-MS) and gas chromatography with flame ionization detector (GC-FID). Hierarchical Cluster Analysis (HCA) and Principal Component Analysis (PCA) were used as statistical tools to evaluate differences in chemical composition. The highest yields were obtained in autumn, spring and summer (2.32-4.38%), while the lowest yields were detected in winter, ranging from 1.15 to 1.91%. Oxygenated monoterpenoids were the predominant class of chemical constituents in the EO obtained in all seasons, showing the highest contents in autumn and summer, and pulegone was identified as a major compound, whose contents varied between 54.13 and 81.17%. The EO samples were divided into three chemical groups by HCA and PCA and were assigned to the same group, except for the three samples gathered in winter. The results showed a seasonal influence on the yield and chemical composition of the EO.

scholarly journals Chemometrics Application for Grouping and Determinating Volatile Compound which related to Antioxidant Activity of Turmeric Essential Oil (Curcuma longa L)

2020 ◽  
pp. 1
Author(s):  
Rosy Islamadina ◽  
Adelin Can ◽  
Abdul Rohman
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
Curcuma Longa ◽  
Principal Component ◽  
Correlated Variables ◽  
And Cluster Analysis ◽  
The Relationship ◽  
Essential Oil Compounds ◽  
Chemical Contents

Turmeric essential oil is known to have antioxidant activity. Various in vitro antioxidantactivity assays has been carried out. Related to this research, it tries to examine the antioxidantpotential of turmeric essential oil and see the composition that is responsible for antioxidant activitycombine with chemometrics. The research method used was a narrative review of 60 articlesobtained from several databases. The review conducted on profiling essential oil compounds thatidentified using GC-MS and evaluation of the antioxidant activity of turmeric essential oil with themost commonly used method including scavenging radical 2,2 diphenyl-1-picrylhydrazyl (DPPH)and 2,2-azinobis (3-ethylbenzothiazoline-6 sulfonic acid (ABTS). Analysis methods used forgrouping various multivariate data subjects and determaining the relationship between thevariables were Principal Component Analysis (PCA) and Cluster Analysis (CA). According to thereview, turmeric essential oils are proven to have potential antioxidant activity and have variationsin chemical contents. PCA was success for grouping subjects with various correlated variables,determining variables wich the most influential and correlation between variables. CA method canbe used to group samples without requiring mutually correlated variables.

scholarly journals Essential Oil Content of Baccharis crispa Spreng. Regulated by Water Stress and Seasonal Variation

2020 ◽  
Vol 2 (3) ◽  
pp. 458-470
Author(s):  
Maria Alejandra Moreno-Pizani ◽  
Franklin Javier Paredes-Trejo ◽  
Asdrubal Jesus Farias-Ramirez ◽  
Hugo Thaner dos Santos ◽  
Adna Prado Massarioli ◽  
...  
Keyword(s):  
Essential Oil ◽  
Oil Content ◽  
Seasonal Pattern ◽  
Irrigation Management ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Crop Productivity ◽  
Growing Seasons ◽  
Irrigation Regimes ◽  
Metabolite Profiles

Carqueja (Baccharis crispa Spreng.) has been primarily used as a medicinal plant around the world. Commercially, the essential oil content of carqueja leaves is the most valuable crop productivity variable. We evaluated the effect of irrigation management in different growing seasons on the essential oil content of carqueja leaves using gas chromatography coupled with mass spectrometry. The experiment was conducted in a greenhouse located in Southern Brazil, where the crop was cultivated for two years in different growing seasons under six irrigation regimes: 25%, 50%, 75%, 100%, 125%, and 150% of the reference crop evapotranspiration (T25, T50, T75, T100, T125, and T150, respectively). A seasonal pattern was observed in the number of metabolites of sesquiterpenes and phenolics in the essential oil extracted from the biomass; this outcome was correlated with irrigation regimes and air temperature. Principal component and hierarchical cluster analyses were used to discriminate the influence of abiotic conditions on secondary metabolite profiles. Spathulenol was the most abundant compound in the essential oils (95.43%) collected during the summer (December–March) season during the third harvest (H3) at T150. The essential oil content was 8.84% ± 0.05% and 10.52% ± 0.10% in summer and winter (June–September), respectively, with T100 at 45 and 46 days after planting.

Consumer’s perceptions of organic foods in Ambato, Ecuador

2020 ◽  
Vol 51 (2) ◽  
pp. 263-280
Author(s):  
Juan Carlos Castro Analuiza ◽  
Cristina Checa Morales ◽  
José Perea
Keyword(s):  
Rural Areas ◽  
Principal Component ◽  
Environmental Benefits ◽  
Multivariate Techniques ◽  
Organic Foods ◽  
Group Iii ◽  
Positive Attitudes ◽  
Group I ◽  
Practical Support ◽  
Conventional Foods

Objective: The aim of this study was to identify the factors that explain consumers purchasing behavior towards organic food products in Ambato (Ecuador). Methodology: Data were collected from a survey of 1,500 organic consumers and other 1,500 consumers who prefer conventional foods, and analyzed using multivariate techniques. Results: Principal component analysis identified four factors which explain the buying behavior of organic consumers: Belief in health benefits, quality and taste attributes; belief in environmental benefits; and contextual issues. Cluster analysis identified three groups of organic consumers: organic consumers interested in self benefit and highly influenced by contextual aspects (Group I), organic consumers interested in expected environment benefits (Group II) and organic consumers very interested in self benefits and less affected by contextual aspects (Group III). The relationships established in organic consumers are different to conventional consumers. This defines different variables that explain the purchase process. The socio-demographics profiles were different in gender and occupation; women and free license workers were more frequently interested in buying organic foods. Limitations: The study was carried out in the city of Ambato that could be considered representative of the Ecuadorian urban society. The results should be complemented by future studies focused on other cities or rural areas. Practical implications: Results suggest that the Ecuadorian organic sector follows the developing patterns identified in the Western countries. This implies that the promotion and practical support for the organic sector should be focused on strengthening positive attitudes towards organic purchases.

scholarly journals Molecular analysis of Er:YAG laser irradiation on dentin

2006 ◽  
Vol 17 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Luís Eduardo Silva Soares ◽  
Aldo Brugnera Junior ◽  
Fátima Zanin ◽  
Marcos Tadeu Tavares Pacheco ◽  
Airton A. Martin
Keyword(s):  
Raman Spectroscopy ◽  
Laser Irradiation ◽  
Er:Yag Laser ◽  
Chemical Constituents ◽  
Organic Content ◽  
Control Group ◽  
Significance Level ◽  
Group Iii ◽  
Group I ◽  
Group Ii

The aim of this study was to evaluate by dispersive Raman spectroscopy the mineral and organic components of human dentin before and after laser irradiation and acid etching. The occlusal enamel of six non-carious human third molars was removed providing 6 dentin discs, which were divided in four quadrants each of them receiving a different surface treatment: etching with a 37% phosphoric acid gel (control); irradiation by Er:YAG laser (KaVo Key Laser II) with 80 mJ, 3 Hz, 30 s (group I); 120 mJ, 3 Hz, 30 s (group II); and 180 mJ, 3 Hz, 30 s (group III). The Raman spectra of normal (untreated) and treated dentin were analyzed and the mineral and the organic component were evaluated. Results were submitted to statistical analysis by ANOVA and Tukey's test at 5% significance level. The minerals and organic content were less affected in the control group and group I (p>0.05). Group II presented more reduction in mineral content (p<0.01) whereas in group III the inorganic (p<0.05) and organic (p<0.01) content were more affected. Dispersive Raman spectroscopy provided valid information of dentin chemical constituents with non-chemical sampling preparation.

Stock structure analysis of the Arabian red shrimp (Aristeus alcocki Ramadan, 1938) in the Indian coast with truss network morphometrics

2018 ◽  
Vol 96 (5) ◽  
pp. 411-424 ◽  
Author(s):  
P. Purushothaman ◽  
R.D. Chakraborty ◽  
G. Kuberan ◽  
G. Maheswarudu ◽  
P.K. Baby ◽  
...  
Keyword(s):  
Management Strategies ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Stock Structure ◽  
Indian Coast ◽  
Morphometric Variation ◽  
Resource Sustainability ◽  
Group I ◽  
Df Analysis ◽  
Geographical Locations

The Arabian red shrimp (Aristeus alcocki Ramadan, 1938) is a deep-sea penaeoid shrimp that forms a major commercial fishery in the Indian coast. However, the spawning population of this species along the Indian coast is poorly known. To study this, stock structure of A. alcocki using truss morphometry was employed. A total of 1842 matured specimens were collected from five geographical locations (Tuticorin (SET), Chennai (SEC), Nagapattianam (SEN), Sakthikulangara (SWS), and Kalamuku (SWK)) along the Indian coast. Thirty-nine truss distances were extracted from each specimen and analyzed by multivariate methods (i.e., principal component analysis (PCA), discriminant functions (DF), and hierarchical cluster analysis). The results of the PCA indicated that the first two components cumulatively explained >70% (female: 72.1%; male: 71.5%) of the total morphometric variation. Stepwise DF analysis indicated that abdominal variables significantly discriminated the populations at different locations. The results clustered the five samples into a minimum of two groups: samples from SWK clustered in group I, whereas rest of the samples clustered in group II. Morphometric variation between the groups was significant for each sex. Significant differences between the groups may be attributed to geographical and environmental conditions, suggesting separate management strategies for resource sustainability.

scholarly journals Seasonal Effect on the Chemical Composition, Insecticidal Properties and Other Biological Activities of Zanthoxylum leprieurii Guill. & Perr. Essential Oils

Foods ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 550 ◽  
Author(s):  
Evelyne Amenan Tanoh ◽  
Guy Blanchard Boué ◽  
Fatimata Nea ◽  
Manon Genva ◽  
Esse Leon Wognin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Biological Activities ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
Wild Plant ◽  
Gas Chromatography Mass Spectrometry ◽  
Seasonal Effect ◽  
The Impact

This study focused, for the first time, on the evaluation of the seasonal effect on the chemical composition and biological activities of essential oils hydrodistillated from leaves, trunk bark and fruits of Zanthoxylum leprieurii (Z. leprieurii), a traditional medicinal wild plant growing in Côte d’Ivoire. The essential oils were obtained by hydrodistillation from fresh organs of Z. leprieurii growing on the same site over several months using a Clevenger-type apparatus and analyzed by gas chromatography-mass spectrometry (GC/MS). Leaf essential oils were dominated by tridecan-2-one (9.00 ± 0.02–36.80 ± 0.06%), (E)-β-ocimene (1.30 ± 0.50–23.57 ± 0.47%), β-caryophyllene (7.00 ± 1.02–19.85 ± 0.48%), dendrolasin (1.79 ± 0.08–16.40 ± 0.85%) and undecan-2-one (1.20 ± 0.03–8.51 ± 0.35%). Fruit essential oils were rich in β-myrcene (16.40 ± 0.91–48.27 ± 0.26%), citronellol (1.90 ± 0.02–28.24 ± 0.10%) and geranial (5.30 ± 0.53–12.50 ± 0.47%). Tridecan-2-one (45.26 ± 0.96–78.80 ± 0.55%), β-caryophyllene (1.80 ± 0.23–13.20 ± 0.33%), α-humulene (4.30 ± 1.09–12.73 ± 1.41%) and tridecan-2-ol (2.23 ± 0.17–10.10 ± 0.61%) were identified as major components of trunk bark oils. Statistical analyses of essential oil compositions showed that the variability mainly comes from the organs. Indeed, principal component analysis (PCA) and hierarchical cluster analysis (HCA) allowed us to cluster the samples into three groups, each one consisting of one different Z. leprieurii organ, showing that essential oils hydrodistillated from the different organs do not display the same chemical composition. However, significant differences in essential oil compositions for the same organ were highlighted during the studied period, showing the impact of the seasonal effect on essential oil compositions. Biological activities of the produced essential oils were also investigated. Essential oils exhibited high insecticidal activities against Sitophilus granarius, as well as antioxidant, anti-inflammatory and moderate anti-plasmodial properties.

scholarly journals Evaluation of the Influence of Sulfur-FumigatedPaeoniae Radix Albaon the Quality of Si Wu Tang by Chromatographic and Chemometric Analysis

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Ke Pei ◽  
Hao Cai ◽  
Yu Duan ◽  
Feng-Xian Qiao ◽  
Si-Cong Tu ◽  
...  
Keyword(s):  
High Performance ◽  
Chemical Constituents ◽  
Great Influence ◽  
Principal Component ◽  
Hierarchical Cluster ◽  
High Performance Liquid Chromatographic ◽  
Chromatographic Fingerprint ◽  
Paeoniae Radix ◽  
Liquid Chromatographic

An accurate and reliable method of high-performance liquid chromatographic fingerprint combining with multi-ingredient determination was developed and validated to evaluate the influence of sulfur-fumigatedPaeoniae Radix Albaon the quality and chemical constituents of Si Wu Tang. Multivariate data analysis including hierarchical cluster analysis and principal component analysis, which integrated with high-performance liquid chromatographic fingerprint and multi-ingredient determination, was employed to evaluate Si Wu Tang in a more objective and scientific way. Interestingly, in this paper, a total of 37 and 36 peaks were marked as common peaks in ten batches of Si Wu Tang containing sun-driedPaeoniae Radix Albaand ten batches of Si Wu Tang containing sulfur-fumigatedPaeoniae Radix Alba, respectively, which indicated the changed fingerprint profile of Si Wu Tang when containing sulfur-fumigated herb. Furthermore, the results of simultaneous determination for multiple ingredients showed that the contents of albiflorin and paeoniflorin decreased significantly (P<0.01) and the contents of gallic acid andZ-ligustilide decreased to some extent at the same time when Si Wu Tang contained sulfur-fumigatedPaeoniae Radix Alba. Therefore, sulfur-fumigation processing may have great influence on the quality of Chinese herbal prescription.

scholarly journals Chemical profile and potential antifungal of essential oil Schinus terebinthifolius and its by-products

2020 ◽  
Vol 9 (11) ◽  
pp. e91491110623
Author(s):  
Luiz Fernando Ganassali de Oliveira Júnior ◽  
Alexandre Passos Oliveira ◽  
Pryanka Thuyra Nascimento Fontes ◽  
Lucas Fonseca Menezes de Oliveira ◽  
Marília Cavalcante Santos ◽  
...  
Keyword(s):  
Essential Oil ◽  
Aqueous Extract ◽  
Steam Distillation ◽  
Chemical Constituents ◽  
Chemical Compounds ◽  
Schinus Terebinthifolius ◽  
Vitro Development ◽  
By Products

This study aimed to investigate the distillation time to obtain a higher yield of essential oil and by-product (extract and hydrolate) of Schinus terebinthifolius seeds, to determine the main chemical constituents of these products and the potential fungitoxic on the Colletotrichum gloeosporioides. To obtain the essential oil and by-products, we used the method of steam distillation for 2.5, 4.0, 5.5 and 7.0 hours. The determination of the chemical composition was made by GC/MS. To determine the potential fungitoxic on mycelial growth of C. gloeosporioides various concentrations of the oil and by-products were tested. Distillation periods did not influence the yield of aqueous extract and essential oil hydrolate. No chemical compounds have been identified in hydrolat or aqueous extract with the use of GC analysis. The essential oil at concentrations of 2%, 3% and 4% inhibited approximately 47% of the in vitro development of the fungus C. gloeosporioides.

Sign in / Sign up

Export Citation Format

Share Document