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T García-barrera - One of the best experts on this subject based on the ideXlab platform.
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Speciation of manganese binding to biomolecules in Pine Nuts (Pinus Pinea) by two‐dimensional liquid chromatography coupled to ultraviolet and inductively coupled plasma mass spectrometry detectors followed by identification by electrospray ionizatio
Rapid communications in mass spectrometry : RCM, 2008Co-Authors: A Arias-borrego, T García-barrera, J L Gómez-arizaAbstract:Advances in analytical methodology for speciation of manganese in Pine Nuts are presented in this work. The approach is based on the use of orthogonal chromatographic systems, namely size-exclusion chromatography (SEC) of the extracts and strong anion exchange (IEC) of the fractions collected by the first column. In both columns, manganese elution is first monitored by a quadrupole inductively coupled plasma mass spectrometry (ICP-MS) instrument equipped with an octopole reaction cell and an ultraviolet (UV) detector. SEC is performed by using two columns covering the molecular weight range from
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Combined use of total metal content and size fractionation of metal biomolecules to determine the provenance of Pine Nuts (Pinus Pinea).
Analytical and bioanalytical chemistry, 2007Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Four essential elements (Mn, Ni, Zn, and Cu) and their molecular-size distribution patterns have been determined, for twenty four samples of Pine Nuts from eight areas in Spain and Portugal (Huelva, Cádiz, Badajoz, Cataluña, Castilla, Madrid, Faro, and Coimbra), by size-exclusion liquid chromatography (SEC) coupled on-line to UV and inductively coupled plasma mass spectrometric (ICP-MS) detection. The variability observed in total element content and the size-exclusion profiles of elements in samples from distant areas were considered as chemical descriptors for characterization of geographic origin. A pattern-recognition technique, the display method principal component analysis, was used as visualization technique to determine the provenance of the Pine Nuts collected. The results obtained confirmed that size fractionation profiles give more information for assessing the provenance of Pine Nuts than the total elements composition traditionally used for this purpose. Combination of these chemical descriptors was the most suitable choice for the samples studied. Figure This paper shows the application of an analytical approach based on total elements concentrations and the relative abundance of metal-biomolecules, estimated by the size-exclusion fractions, as chemical descriptors to determine the provenance of Pine Nuts. Principal component analysis (PCA) has been used as a visualization technique.
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Combined use of total metal content and size fractionation of metal biomolecules to determine the provenance of Pine Nuts (Pinus Pinea).
Analytical and Bioanalytical Chemistry, 2007Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Four essential elements (Mn, Ni, Zn, and Cu) and their molecular-size distribution patterns have been determined, for twenty four samples of Pine Nuts from eight areas in Spain and Portugal (Huelva, Cadiz, Badajoz, Cataluna, Castilla, Madrid, Faro, and Coimbra), by size-exclusion liquid chromatography (SEC) coupled on-line to UV and inductively coupled plasma mass spectrometric (ICP–MS) detection. The variability observed in total element content and the size-exclusion profiles of elements in samples from distant areas were considered as chemical descriptors for characterization of geographic origin. A pattern-recognition technique, the display method principal component analysis, was used as visualization technique to determine the provenance of the Pine Nuts collected. The results obtained confirmed that size fractionation profiles give more information for assessing the provenance of Pine Nuts than the total elements composition traditionally used for this purpose. Combination of these chemical descriptors was the most suitable choice for the samples studied.
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Multielemental fractionation in Pine Nuts (Pinus Pinea) from different geographic origins by size-exclusion chromatography with UV and inductively coupled plasma mass spectrometry detection
Journal of chromatography. A, 2006Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Abstract Pine Nuts ( Pinus Pinea ) from different geographical origin in Spain and Portugal have been investigated concerning total element content and metal-biomolecules size distribution patterns Mn, Zn, Ni and Cu. All the studied metals were at the highest concentration in Pine Nuts from Faro and at the lowest from Cataluna. The most abundant element in samples was Mn at concentrations in the range of 26 μg g −1 (Cataluna) to 559 μg g −1 (Faro). Zn was also present at high concentration in samples, from 25 μg g −1 (Cataluna) to 113 μg g −1 (Faro). To a deeper insight to obtain classification rules for samples, Pine Nuts were analyzed by size-exclusion chromatography (SEC) with UV detection and inductively coupled plasma mass spectrometry (ICP-MS). Two columns were used covering the molecular weigh range from 70 kDa in sample from Cadiz, and profiles of Ni and Zn are clearly different in terms of abundance of peaks. All these chromatographic profiles for elements give valuable information about the geographical origin of the studied samples and the differences found are discussed in this work.
J L Gómez-ariza - One of the best experts on this subject based on the ideXlab platform.
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Speciation of manganese binding to biomolecules in Pine Nuts (Pinus Pinea) by two‐dimensional liquid chromatography coupled to ultraviolet and inductively coupled plasma mass spectrometry detectors followed by identification by electrospray ionizatio
Rapid communications in mass spectrometry : RCM, 2008Co-Authors: A Arias-borrego, T García-barrera, J L Gómez-arizaAbstract:Advances in analytical methodology for speciation of manganese in Pine Nuts are presented in this work. The approach is based on the use of orthogonal chromatographic systems, namely size-exclusion chromatography (SEC) of the extracts and strong anion exchange (IEC) of the fractions collected by the first column. In both columns, manganese elution is first monitored by a quadrupole inductively coupled plasma mass spectrometry (ICP-MS) instrument equipped with an octopole reaction cell and an ultraviolet (UV) detector. SEC is performed by using two columns covering the molecular weight range from
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Combined use of total metal content and size fractionation of metal biomolecules to determine the provenance of Pine Nuts (Pinus Pinea).
Analytical and bioanalytical chemistry, 2007Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Four essential elements (Mn, Ni, Zn, and Cu) and their molecular-size distribution patterns have been determined, for twenty four samples of Pine Nuts from eight areas in Spain and Portugal (Huelva, Cádiz, Badajoz, Cataluña, Castilla, Madrid, Faro, and Coimbra), by size-exclusion liquid chromatography (SEC) coupled on-line to UV and inductively coupled plasma mass spectrometric (ICP-MS) detection. The variability observed in total element content and the size-exclusion profiles of elements in samples from distant areas were considered as chemical descriptors for characterization of geographic origin. A pattern-recognition technique, the display method principal component analysis, was used as visualization technique to determine the provenance of the Pine Nuts collected. The results obtained confirmed that size fractionation profiles give more information for assessing the provenance of Pine Nuts than the total elements composition traditionally used for this purpose. Combination of these chemical descriptors was the most suitable choice for the samples studied. Figure This paper shows the application of an analytical approach based on total elements concentrations and the relative abundance of metal-biomolecules, estimated by the size-exclusion fractions, as chemical descriptors to determine the provenance of Pine Nuts. Principal component analysis (PCA) has been used as a visualization technique.
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Combined use of total metal content and size fractionation of metal biomolecules to determine the provenance of Pine Nuts (Pinus Pinea).
Analytical and Bioanalytical Chemistry, 2007Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Four essential elements (Mn, Ni, Zn, and Cu) and their molecular-size distribution patterns have been determined, for twenty four samples of Pine Nuts from eight areas in Spain and Portugal (Huelva, Cadiz, Badajoz, Cataluna, Castilla, Madrid, Faro, and Coimbra), by size-exclusion liquid chromatography (SEC) coupled on-line to UV and inductively coupled plasma mass spectrometric (ICP–MS) detection. The variability observed in total element content and the size-exclusion profiles of elements in samples from distant areas were considered as chemical descriptors for characterization of geographic origin. A pattern-recognition technique, the display method principal component analysis, was used as visualization technique to determine the provenance of the Pine Nuts collected. The results obtained confirmed that size fractionation profiles give more information for assessing the provenance of Pine Nuts than the total elements composition traditionally used for this purpose. Combination of these chemical descriptors was the most suitable choice for the samples studied.
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Multielemental fractionation in Pine Nuts (Pinus Pinea) from different geographic origins by size-exclusion chromatography with UV and inductively coupled plasma mass spectrometry detection
Journal of chromatography. A, 2006Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Abstract Pine Nuts ( Pinus Pinea ) from different geographical origin in Spain and Portugal have been investigated concerning total element content and metal-biomolecules size distribution patterns Mn, Zn, Ni and Cu. All the studied metals were at the highest concentration in Pine Nuts from Faro and at the lowest from Cataluna. The most abundant element in samples was Mn at concentrations in the range of 26 μg g −1 (Cataluna) to 559 μg g −1 (Faro). Zn was also present at high concentration in samples, from 25 μg g −1 (Cataluna) to 113 μg g −1 (Faro). To a deeper insight to obtain classification rules for samples, Pine Nuts were analyzed by size-exclusion chromatography (SEC) with UV detection and inductively coupled plasma mass spectrometry (ICP-MS). Two columns were used covering the molecular weigh range from 70 kDa in sample from Cadiz, and profiles of Ni and Zn are clearly different in terms of abundance of peaks. All these chromatographic profiles for elements give valuable information about the geographical origin of the studied samples and the differences found are discussed in this work.
Yuhong Zhao - One of the best experts on this subject based on the ideXlab platform.
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comparative analysis of volatile profiles in two grafted Pine Nuts by headspace spme gc ms and electronic nose as responses to different roasting conditions
Food Research International, 2021Co-Authors: Nadya Mara Adelina, He Wang, Ligang Zhang, Yuhong ZhaoAbstract:Abstract As an attempt to fulfill the massive demand for Pine Nuts, two grafted trees were cultivated: grafted Pinus koraiensis on the same scions (PK) and grafted Pinus koraiensis on Pinus sylvestris rootstocks (PKS) trees. Both PK and PKS are acknowledged as important economic trees in the northeastern area of China. This study aimed to compare the volatile compounds and aroma profiles in PK and PKS by Headspace Solid Phase Microextraction (HS-SPME) coupled with Gas Chromatography-Mass Spectrometry (GC–MS) and Electronic nose (E-nose) as responses to different roasting conditions. The results showed that a total of 286 volatile compounds were identified in the PK and PKS samples, which some of them were considered to contribute to the desirable aroma of samples. Abundance of terpenes and aromatic hydrocarbons, such as D-limonene and toluene, were respectively present in both raw PK and PKS. The increasing temperature and duration of roasting significantly decreased terpenes and aromatic hydrocarbons content, while more alkanes/alkenes, acids, and ketones were generated in the medium temperature condition. The late phase of roasting was dominated by aldehydes, furans, furfurals, pyrazines, and pyrroles, for which PKS showed a higher content than PK. The aroma profiles detected by E-nose showed that the influence of roasting time was less at high temperatures than those at low and medium temperatures. This study also highlighted the feasibility of principal component analysis (PCA) combined with HS-SPME/GC–MS and E-nose to discriminate the samples.
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Comparative analysis of volatile profiles in two grafted Pine Nuts by headspace-SPME/GC–MS and electronic nose as responses to different roasting conditions
Food research international (Ottawa Ont.), 2020Co-Authors: Nadya Mara Adelina, He Wang, Ligang Zhang, Yuhong ZhaoAbstract:Abstract As an attempt to fulfill the massive demand for Pine Nuts, two grafted trees were cultivated: grafted Pinus koraiensis on the same scions (PK) and grafted Pinus koraiensis on Pinus sylvestris rootstocks (PKS) trees. Both PK and PKS are acknowledged as important economic trees in the northeastern area of China. This study aimed to compare the volatile compounds and aroma profiles in PK and PKS by Headspace Solid Phase Microextraction (HS-SPME) coupled with Gas Chromatography-Mass Spectrometry (GC–MS) and Electronic nose (E-nose) as responses to different roasting conditions. The results showed that a total of 286 volatile compounds were identified in the PK and PKS samples, which some of them were considered to contribute to the desirable aroma of samples. Abundance of terpenes and aromatic hydrocarbons, such as D-limonene and toluene, were respectively present in both raw PK and PKS. The increasing temperature and duration of roasting significantly decreased terpenes and aromatic hydrocarbons content, while more alkanes/alkenes, acids, and ketones were generated in the medium temperature condition. The late phase of roasting was dominated by aldehydes, furans, furfurals, pyrazines, and pyrroles, for which PKS showed a higher content than PK. The aroma profiles detected by E-nose showed that the influence of roasting time was less at high temperatures than those at low and medium temperatures. This study also highlighted the feasibility of principal component analysis (PCA) combined with HS-SPME/GC–MS and E-nose to discriminate the samples.
A Arias-borrego - One of the best experts on this subject based on the ideXlab platform.
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Speciation of manganese binding to biomolecules in Pine Nuts (Pinus Pinea) by two‐dimensional liquid chromatography coupled to ultraviolet and inductively coupled plasma mass spectrometry detectors followed by identification by electrospray ionizatio
Rapid communications in mass spectrometry : RCM, 2008Co-Authors: A Arias-borrego, T García-barrera, J L Gómez-arizaAbstract:Advances in analytical methodology for speciation of manganese in Pine Nuts are presented in this work. The approach is based on the use of orthogonal chromatographic systems, namely size-exclusion chromatography (SEC) of the extracts and strong anion exchange (IEC) of the fractions collected by the first column. In both columns, manganese elution is first monitored by a quadrupole inductively coupled plasma mass spectrometry (ICP-MS) instrument equipped with an octopole reaction cell and an ultraviolet (UV) detector. SEC is performed by using two columns covering the molecular weight range from
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Combined use of total metal content and size fractionation of metal biomolecules to determine the provenance of Pine Nuts (Pinus Pinea).
Analytical and bioanalytical chemistry, 2007Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Four essential elements (Mn, Ni, Zn, and Cu) and their molecular-size distribution patterns have been determined, for twenty four samples of Pine Nuts from eight areas in Spain and Portugal (Huelva, Cádiz, Badajoz, Cataluña, Castilla, Madrid, Faro, and Coimbra), by size-exclusion liquid chromatography (SEC) coupled on-line to UV and inductively coupled plasma mass spectrometric (ICP-MS) detection. The variability observed in total element content and the size-exclusion profiles of elements in samples from distant areas were considered as chemical descriptors for characterization of geographic origin. A pattern-recognition technique, the display method principal component analysis, was used as visualization technique to determine the provenance of the Pine Nuts collected. The results obtained confirmed that size fractionation profiles give more information for assessing the provenance of Pine Nuts than the total elements composition traditionally used for this purpose. Combination of these chemical descriptors was the most suitable choice for the samples studied. Figure This paper shows the application of an analytical approach based on total elements concentrations and the relative abundance of metal-biomolecules, estimated by the size-exclusion fractions, as chemical descriptors to determine the provenance of Pine Nuts. Principal component analysis (PCA) has been used as a visualization technique.
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Combined use of total metal content and size fractionation of metal biomolecules to determine the provenance of Pine Nuts (Pinus Pinea).
Analytical and Bioanalytical Chemistry, 2007Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Four essential elements (Mn, Ni, Zn, and Cu) and their molecular-size distribution patterns have been determined, for twenty four samples of Pine Nuts from eight areas in Spain and Portugal (Huelva, Cadiz, Badajoz, Cataluna, Castilla, Madrid, Faro, and Coimbra), by size-exclusion liquid chromatography (SEC) coupled on-line to UV and inductively coupled plasma mass spectrometric (ICP–MS) detection. The variability observed in total element content and the size-exclusion profiles of elements in samples from distant areas were considered as chemical descriptors for characterization of geographic origin. A pattern-recognition technique, the display method principal component analysis, was used as visualization technique to determine the provenance of the Pine Nuts collected. The results obtained confirmed that size fractionation profiles give more information for assessing the provenance of Pine Nuts than the total elements composition traditionally used for this purpose. Combination of these chemical descriptors was the most suitable choice for the samples studied.
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Multielemental fractionation in Pine Nuts (Pinus Pinea) from different geographic origins by size-exclusion chromatography with UV and inductively coupled plasma mass spectrometry detection
Journal of chromatography. A, 2006Co-Authors: J L Gómez-ariza, A Arias-borrego, T García-barreraAbstract:Abstract Pine Nuts ( Pinus Pinea ) from different geographical origin in Spain and Portugal have been investigated concerning total element content and metal-biomolecules size distribution patterns Mn, Zn, Ni and Cu. All the studied metals were at the highest concentration in Pine Nuts from Faro and at the lowest from Cataluna. The most abundant element in samples was Mn at concentrations in the range of 26 μg g −1 (Cataluna) to 559 μg g −1 (Faro). Zn was also present at high concentration in samples, from 25 μg g −1 (Cataluna) to 113 μg g −1 (Faro). To a deeper insight to obtain classification rules for samples, Pine Nuts were analyzed by size-exclusion chromatography (SEC) with UV detection and inductively coupled plasma mass spectrometry (ICP-MS). Two columns were used covering the molecular weigh range from 70 kDa in sample from Cadiz, and profiles of Ni and Zn are clearly different in terms of abundance of peaks. All these chromatographic profiles for elements give valuable information about the geographical origin of the studied samples and the differences found are discussed in this work.
Nadya Mara Adelina - One of the best experts on this subject based on the ideXlab platform.
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comparative analysis of volatile profiles in two grafted Pine Nuts by headspace spme gc ms and electronic nose as responses to different roasting conditions
Food Research International, 2021Co-Authors: Nadya Mara Adelina, He Wang, Ligang Zhang, Yuhong ZhaoAbstract:Abstract As an attempt to fulfill the massive demand for Pine Nuts, two grafted trees were cultivated: grafted Pinus koraiensis on the same scions (PK) and grafted Pinus koraiensis on Pinus sylvestris rootstocks (PKS) trees. Both PK and PKS are acknowledged as important economic trees in the northeastern area of China. This study aimed to compare the volatile compounds and aroma profiles in PK and PKS by Headspace Solid Phase Microextraction (HS-SPME) coupled with Gas Chromatography-Mass Spectrometry (GC–MS) and Electronic nose (E-nose) as responses to different roasting conditions. The results showed that a total of 286 volatile compounds were identified in the PK and PKS samples, which some of them were considered to contribute to the desirable aroma of samples. Abundance of terpenes and aromatic hydrocarbons, such as D-limonene and toluene, were respectively present in both raw PK and PKS. The increasing temperature and duration of roasting significantly decreased terpenes and aromatic hydrocarbons content, while more alkanes/alkenes, acids, and ketones were generated in the medium temperature condition. The late phase of roasting was dominated by aldehydes, furans, furfurals, pyrazines, and pyrroles, for which PKS showed a higher content than PK. The aroma profiles detected by E-nose showed that the influence of roasting time was less at high temperatures than those at low and medium temperatures. This study also highlighted the feasibility of principal component analysis (PCA) combined with HS-SPME/GC–MS and E-nose to discriminate the samples.
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Comparative analysis of volatile profiles in two grafted Pine Nuts by headspace-SPME/GC–MS and electronic nose as responses to different roasting conditions
Food research international (Ottawa Ont.), 2020Co-Authors: Nadya Mara Adelina, He Wang, Ligang Zhang, Yuhong ZhaoAbstract:Abstract As an attempt to fulfill the massive demand for Pine Nuts, two grafted trees were cultivated: grafted Pinus koraiensis on the same scions (PK) and grafted Pinus koraiensis on Pinus sylvestris rootstocks (PKS) trees. Both PK and PKS are acknowledged as important economic trees in the northeastern area of China. This study aimed to compare the volatile compounds and aroma profiles in PK and PKS by Headspace Solid Phase Microextraction (HS-SPME) coupled with Gas Chromatography-Mass Spectrometry (GC–MS) and Electronic nose (E-nose) as responses to different roasting conditions. The results showed that a total of 286 volatile compounds were identified in the PK and PKS samples, which some of them were considered to contribute to the desirable aroma of samples. Abundance of terpenes and aromatic hydrocarbons, such as D-limonene and toluene, were respectively present in both raw PK and PKS. The increasing temperature and duration of roasting significantly decreased terpenes and aromatic hydrocarbons content, while more alkanes/alkenes, acids, and ketones were generated in the medium temperature condition. The late phase of roasting was dominated by aldehydes, furans, furfurals, pyrazines, and pyrroles, for which PKS showed a higher content than PK. The aroma profiles detected by E-nose showed that the influence of roasting time was less at high temperatures than those at low and medium temperatures. This study also highlighted the feasibility of principal component analysis (PCA) combined with HS-SPME/GC–MS and E-nose to discriminate the samples.