Analysis of volatile compounds in five jackfruit (Artocarpus heterophyllus L.) cultivars using solid-phase microextraction (SPME) and gas chromatography-time-of-flight mass spectrometry (GC-TOFMS)

Ong, B.T.; Nazimah, S.A.H.; Tan, Chin Ping; Mirhosseini, Hamed; Osman, Azizah; Hashim, Dzulkifly Mat; Rusul, Gulam

doi:10.1016/j.jfca.2008.03.002

Cited by 47 publications

(28 citation statements)

References 32 publications

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“…The extraction efficiency of volatile compounds by the HS-SPME technique strongly depends on their polarity and, consequently, on their affinity to the fiber-coated phase [9,29]. Therefore, six commercial types of fibers (70 lm CW/DVB, 50/30 lm DVB/CAR/PDMS, 75 lm CAR/ PDMS, 85 lm PA, 65 lm PDMS/DVB, and 100 lm PDMS) were used to evaluate the effect of different coatings on the extraction efficiency of volatile compounds in apple samples.…”

Section: Spme Fiber Coatingmentioning

confidence: 99%

“…The dissolution of salt (NaCl) into the sample matrix enhances the partition coefficient of analytes between the headspace and the sample phase and therefore to the fiber [9,24,29]. To analyze the salt effect on the sample matrix, three different NaCl amounts (0.1, 0.2, and 0.3 g) were dissolved in order to saturate the sample matrix.…”

Section: Ionic Strengthmentioning

confidence: 99%

“…Several extraction techniques such as headspace, purge, and trap, liquid -liquid extraction (LLE) and SPE are described in different studies; however, these methods are based on the use of solvents and present some drawbacks such as possibility of sample contamination and the loss of some important volatiles, depending on solvent selectivity and volatility, during the concentration step. Additionally they require large amounts of sample, are laborious and time consuming methods [9,10]. Solidphase microextraction (SPME) is a solventless extraction technique that presents itself as an alternative to the conventional sample extraction techniques [9,11] and moreover is faster and easier than solvent extractions and distillations, as well as being highly reproducible and sensitive.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally they require large amounts of sample, are laborious and time consuming methods [9,10]. Solidphase microextraction (SPME) is a solventless extraction technique that presents itself as an alternative to the conventional sample extraction techniques [9,11] and moreover is faster and easier than solvent extractions and distillations, as well as being highly reproducible and sensitive. Moreover a range of fiber coating are commercially available, providing specificity for a wide range of polar, nonpolar, volatile, and semivolatile compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover a range of fiber coating are commercially available, providing specificity for a wide range of polar, nonpolar, volatile, and semivolatile compounds. This technique has been applied to the analysis of volatile and nonvolatile compounds (in gaseous, solid, and liquid samples) present in several matrixes and also for the analysis of volatiles in a large variety of fruits, such as apples [1, 12 -19], peaches [5], pears [5,20], strawberries [9,21], annonas [22], among others. Its suitability has also been verified in the detection of characteristic aromas, off-flavors, pesticides, and even antibiotics in various food matrices, as for example, wine [10, 23 -25], whisky [26], and beer [27].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of volatile substances in apples from Rosaceae family by headspace solid‐phase microextraction followed by GC‐qMS

Ferreira

Perestrelo

Caldeira

et al. 2009

J of Separation Science

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The volatile composition of different apple varieties of Malus domestica Borkh. species from different geographic regions at Madeira Islands, namely Ponta do Pargo (PP), Porto Santo (PS), and Santo da Serra (SS) was established by headspace solid-phase microextraction (HS-SPME) procedure followed by GC-MS (GC-qMS) analysis. Significant parameters affecting sorption process such as fiber coating, extraction temperature, extraction time, sample amount, dilution factor, ionic strength, and desorption time, were optimized and discussed. The SPME fiber coated with 50/30 microm divinylbenzene/carboxen/PDMS (DVB/CAR/PDMS) afforded highest extraction efficiency of volatile compounds, providing the best sensitivity for the target volatiles, particularly when the samples were extracted at 50 degrees C for 30 min with constant magnetic stirring. A qualitative and semi-quantitative analysis between the investigated apple species has been established. It was possible to identify about 100 of volatile compounds among pulp (46, 45, and 39), peel (64, 60, and 64), and entire fruit (65, 43, and 50) in PP, PS, and SS apples, respectively. Ethyl esters, terpenes, and higher alcohols were found to be the most representative volatiles. Alpha-farnesene, hexan-1-ol and hexyl 2-methylbutyrate were the compounds found in the volatile profile of studied apples with the largest GC area, representing, on average, 24.71, 14.06, and 10.80% of the total volatile fraction from PP, PS, and SS apples. In PP entire apple, the most abundant compounds identified were alpha-farnesene (30.49%), the unknown compound m/z (69, 101, 157) (21.82%) and hexyl acetate (6.57%). Regarding PS entire apple the major compounds were alpha-farnesene (16.87%), estragole (15.43%), hexan-1-ol (10.94), and E-2-hexenal (10.67). Alpha-farnesene (30.3%), hexan-1-ol (18.90%), 2-methylbutanoic acid (4.7%), and pentan-1-ol (4.6%) were also found as SS entire apple volatiles present in a higher relative content. Principal component analysis (PCA) of the results clustered the apples into three groups according to geographic origin. Linear discriminant analysis (LDA) was performed in order to detect the volatile compounds able to differentiate the three kinds of apples investigated. The most important contributions to the differentiation of the PP, PS, and SS apples were ethyl hexanoate, hexyl 2-methylbutyrate, E,E-2,4-heptadienal, p-ethyl styrene, and E-2-hexenal.

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Section: Spme Fiber Coatingmentioning

confidence: 99%

Section: Ionic Strengthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of volatile substances in apples from Rosaceae family by headspace solid‐phase microextraction followed by GC‐qMS

Ferreira

Perestrelo

Caldeira

et al. 2009

J of Separation Science

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Current literature in mass spectrometry

2008

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Reviews; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (4 Weeks journals ‐ Search completed at 24th. Sept. 2008)

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A Method for Esterification Reaction Rate Prediction of Aliphatic Monocarboxylic Acids with Primary Alcohols in 1,4‐Dioxane Based on Two Parametrical Taft Equation

Vojtko

Tomčı́k

2014

Int J of Chemical Kinetics

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Esterification reaction rates of aliphatic monocarboxylic acids with primary alcohols in 1,4-dioxane as inert solvent were investigated. Acids were esterified with 1-propanol and alcohols with acetic acid as model reactants at a constant temperature of 60 • C, at a fixed ionic strength and pH in a batch reactor with a constant volume. For evaluation of reaction rates, an exact kinetic equation for the equilibrium reaction was applied. Under these conditions and for low reactants, concentrations reaction rate depends only on the structure of reactants and, therefore, can be predicted by a correlation equation with two Taft coefficients (inductive and steric effects). From these equations, it is possible to estimate the esterification reaction rate constant for other acid-alcohol pairs. This methodology may also be suitable for other kinetic systems measured under comparable experimental conditions. C

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Analysis of volatile compounds in five jackfruit (Artocarpus heterophyllus L.) cultivars using solid-phase microextraction (SPME) and gas chromatography-time-of-flight mass spectrometry (GC-TOFMS)

Cited by 47 publications

References 32 publications

Characterization of volatile substances in apples from Rosaceae family by headspace solid‐phase microextraction followed by GC‐qMS

Characterization of volatile substances in apples from Rosaceae family by headspace solid‐phase microextraction followed by GC‐qMS

Current literature in mass spectrometry

A Method for Esterification Reaction Rate Prediction of Aliphatic Monocarboxylic Acids with Primary Alcohols in 1,4‐Dioxane Based on Two Parametrical Taft Equation

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