scholarly journals Determination of Volatile Compounds in Nut-Based Milk Alternative Beverages by HS-SPME Prior to GC-MS Analysis

Molecules ◽  
2019 ◽  
Vol 24 (17) ◽  
pp. 3091 ◽  
Author(s):  
Natalia Manousi ◽  
George A. Zachariadis
Keyword(s):  
Volatile Compounds ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Ms Analysis ◽  
Salt Addition ◽  
Compositional Changes ◽  
Optimum Extraction ◽  
Technological Treatment

A reliable Headspace-Solid Phase Microextraction (HS-SPME) method was developed for the determination of polar volatile components of commercial nut-based milk alternative drinks prior to Gas Chromatography–Mass Spectrometry (GC-MS) analysis. Under the optimum extraction conditions, a divinylbenzene (DVB)/Carboxen™ CAR)/polydimethylsiloxane (PDMS) fiber was used and 2 mL of sample was heated at 60 °C for 40 min under stirring, without salt addition. Ten compounds from different chemical classes (heptane, a-pinene, toluene, 2-methylpyrazine, 3-heptanone, heptanal, 2-octanone, 1-heptanol, benzaldehyde and 1-octanol) were chosen as model analytes for quantification. Limits of detection and limits of quantification were found to be 0.33–1.67 ng g−1 and 1–5 ng g−1, accordingly. Good linearity, precision and accuracy were obtained as well as a wide linear range. The proposed method was successfully applied to various beverages including almond milk, walnut milk, peanut milk and almond chocolate milk. More than 70 volatile compounds were detected in the different samples. Most of the detected volatiles were aldehydes, ketones and alcohols. This technique can be used for the determination of volatile compounds in nut-based beverages, to detect compositional changes during storage and technological treatment used for their production.

scholarly journals Analysis of Volatile Constituents in Platostoma palustre (Blume) Using Headspace Solid-Phase Microextraction and Simultaneous Distillation-Extraction

Foods ◽  
2019 ◽  
Vol 8 (9) ◽  
pp. 415 ◽  
Author(s):  
Kung ◽  
Chen ◽  
Chao ◽  
Wu ◽  
Lin ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Volatile Compounds ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Headspace Analysis ◽  
Extraction Methods ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Headspace Solid Phase Microextraction ◽  
Simultaneous Distillation Extraction

Hsian-tsao (Platostoma palustre Blume) is a traditional Taiwanese food. It is admired by many consumers, especially in summer, because of its aroma and taste. This study reports the analysis of the volatile components present in eight varieties of Hsian-tsao using headspace solid-phase microextraction (HS-SPME) and simultaneous distillation-extraction (SDE) coupled with gas chromatography (GC) and gas chromatography-mass spectrometry (GC/MS). HS-SPME is a non-heating method, and the results show relatively true values of the samples during flavor isolation. However, it is a kind of headspace analysis that has the disadvantage of a lower detection ability to relatively higher molecular weight compounds; also, the data are not quantitative, but instead are used for comparison. The SDE method uses distillation 2 h for flavor isolation; therefore, it quantitatively identifies more volatile compounds in the samples while the samples withstand heating. Both methods were used in this study to investigate information about the samples. The results showed that Nongshi No. 1 had the highest total quantity of volatile components using HS-SPME, whereas SDE indicated that Taoyuan Mesona 1301 (TYM1301) had the highest volatile concentration. Using the two extraction methods, 120 volatile components were identified. Fifty-six volatile components were identified using HS-SPME, and the main volatile compounds were α-pinene, β-pinene, and limonene. A total of 108 volatile components were identified using SDE, and the main volatile compounds were α-bisabolol, β-caryophyllene, and caryophyllene oxide. Compared with SDE, HS-SPME sampling extracted a significantly higher amount of monoterpenes and had a poorer detection of less volatile compounds, such as sesquiterpenes, terpene alcohols, and terpene oxide.

scholarly journals Solid-Phase Microextraction for the Determination of Volatile Compounds in the Spoilage of Raw Ground Beef

2008 ◽  
Vol 91 (6) ◽  
pp. 1409-1415 ◽  
Author(s):  
Rosa Ana Pérez ◽  
Maria Dolores Rojo ◽  
Gema Gonzlez ◽  
Cristina De Lorenzo
Keyword(s):  
Volatile Compounds ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Ground Beef ◽  
Gas Chromatography Mass Spectrometry ◽  
Ground Meat ◽  
Fiber Extraction ◽  
Meat Samples ◽  
Selection Of

Abstract A method using solid-phase microextraction (SPME) and gas chromatography/mass spectrometry was developed and applied to the determination of volatile compounds generated in meat, at different times, from ground beef stored under refrigeration. Selection of the extractive fiber, extraction time, and headspace (HS) or direct extraction was optimized for the determination of volatile compounds from ground meat. Various fibers were investigated, and carboxen/polydimethylsiloxane was selected for these analyses. The HS analysis of the solid sample by HS-SPME produced a higher volatile signal than did direct-SPME. The meat samples were stored under refrigeration and analyzed after 0, 3, and 6 days of storage. These analyses at different times showed important changes in the volatile profile of the evaluated samples. The ketones 3-hydroxy-2-butanone and 2,3-butanedione, and the alcohol 3-methyl-1-butanol were the most representative compounds generated during the meat storage. In general, compounds associated with a butter off-flavor were detected during the storage of raw ground beef.

scholarly journals Minor Volatile Compounds in White Wines from Canary Islands, Madeira, and Pico (Azores) by Headspace Solid-Phase Microextraction-Gas Chromatography-Mass Spectrometry: A Qualitative Study

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
S. J. Pérez-Olivero ◽  
J. P. Pérez Trujillo ◽  
J. E. Conde
Keyword(s):  
Volatile Compounds ◽  
Canary Islands ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
White Wines ◽  
Headspace Solid Phase Microextraction ◽  
Detection And Identification ◽  
Analytical System

Application of headspace solid-phase microextraction (HS-SPME) coupled with high-resolution gas chromatographic (HRGC) analytical system was studied for detection and identification of volatile compounds in wines. Four different SPME fibers were tested, and 138 different compounds were detected and identified. The best fiber for the determination of different groups of compounds was selected. Using these results, a comparative study of Madeira, Tenerife (Canary Islands), and Pico (Azores) was carried out.

Analysis of flavor compounds in marinated chicken wings after irradiation and natural antioxidant (phytic acid and tea polyphenols) treatment

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Mingxiu Long ◽  
Min Liu ◽  
Yongfu Li ◽  
Zhuxi Tian ◽  
Yangbo He ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Phytic Acid ◽  
Solid Phase ◽  
Meat Products ◽  
Principal Component ◽  
Tea Polyphenols ◽  
Flavor Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Irradiation Treatment

Abstract Marinated chicken wings is one of the popular marinated meat products in China. Here, electronic nose (e-nose) and solid phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) were used to detect volatile components of four different treatment marinated chicken wings (neither irradiated nor added phytic acid and tea polyphenols, A1; added phytic acid and tea polyphenols but no irradiated, A2; irradiated with 4 kGy irradiation but not added phytic acid and tea polyphenols, A3; irradiated with 4 kGy irradiation and added phytic acid and tea polyphenols, A4). Then odor activity value (OAV) and principal component analysis (PCA) were utilized to analyze their key flavor compounds. E-nose analysis found that antioxidant has a great impact on the odor of the marinated chicken wings, while the irradiation treatment has little effect on it. Besides, the irradiation treatment can reduce the unpleasant odor caused by antioxidants in certain. Through SPME-GC-MS, 101 volatile compounds were identified in four groups. After analysis, the antioxidants can inhibit the production of some volatile compounds, while irradiation treatment will relieve this phenomenon. This result is consistent with the e-nose. Following OAV, PCA analysis and sensory evaluation further verified the above conclusions.

Optimization of Solid Phase Microextraction (SPME) Coupled with Gas Chromatography Mass Spectrometry (GC-MS) for Fermented Perilla Leaves Jiaosu and Volatile Profiling Analysis During Fermentation

2020 ◽  
Vol 14 (3) ◽  
pp. 359-368
Author(s):  
Ruyi Sha ◽  
Haoan Fan ◽  
Zhenzhen Wang ◽  
Gaojian Wang ◽  
Yanli Cui ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Volatile Compounds ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Extraction Temperature ◽  
Spontaneous Fermentation ◽  
Chromatography Mass Spectrometry

A method based on solid phase microextraction coupled with gas chromatography mass spectrometry was developed for volatile profiling fermented perilla leaves jiaosu (PFJ) during fermentation. Five fibers were firstly evaluated by the total peak areas and the number of volatile compounds. Secondly, a Plackett-Burman design was applied to screen for seven independent variables selected in literature. Three significant variables (extraction time, extraction temperature and equilibrium time) were therefore selected for the following optimization studies. A Box-Behnken design combined with a steepest ascent was then used to optimize the significant factors. Under optimal conditions, the changes of volatile profiles of PFJ at 7, 14, 21, 28, 91 and 140 d were analyzed. A total of fifty-one volatile compounds were identified, and alcohols (68.12–78.94%) were the main volatile components in PFJ, followed by methoxy-phenolic compounds (4.67–5.48%). Perilla alcohol and trans-Shisool were the major constituents during spontaneous fermentation, which accounted for 16.14–30.66% and 19.95–24.52%, respectively. The results showed that PFJ fermented into a health probiotic product with characteristic flavour and functional volatile compounds.

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