Detection and comparative analysis of VOCs between tomato and pepper based on GC×GC-TOFMS
Sihui Guan1,2, Chenxu Liu1, Meiying Ruan1
1State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, P.R. China.
Scientific Reports
|February 20, 2025
Summary
This study identified key flavor compounds in tomatoes and peppers using advanced GC×GC-TOF-MS analysis. Esters and specific volatile organic compounds (VOCs) significantly contribute to the distinct aromas of each fruit.
Area of Science:
- Food Science
- Analytical Chemistry
- Metabolomics
Background:
- Flavor profiles of fruits are complex, influenced by numerous volatile organic compounds (VOCs).
- Understanding these profiles is crucial for food quality and product development.
Purpose of the Study:
- To identify and compare the key flavor substances in mature tomato and pepper fruits.
- To differentiate aroma profiles using flavoromics and determine major flavor contributors.
Main Methods:
- Gas chromatography-gas chromatography-time of flight mass spectrometry (GC×GC-TOF-MS) was employed for comprehensive volatile analysis.
- Relative Odor Activity Value (ROAV) was used to evaluate the contribution of VOCs to overall flavor.
Main Results:
- 1560 volatile substances were identified, with 627 specific to tomato and 534 to pepper.
- Esters were identified as key differentiating aroma compounds.
- Three common VOCs (2-nonenal, (E)-; 2-octenal, (E)-; and furan, 2-pentyl-) showed high ROAV in both.
- Specific VOCs like heptanal and pyrazine derivatives contributed uniquely to tomato and pepper flavors, respectively.
- Acetoin, dodecanal, and 1-decanol showed the highest fold changes between the two fruits.
Conclusions:
- Flavoromics effectively distinguished tomato and pepper aroma profiles.
- Sweet flavor is prominent in both, with distinct secondary notes like green/fruity for pepper and waxy/citrus for tomato.
- Identifying key flavor compounds provides insights for targeted breeding and flavor enhancement.
Related Concept Videos
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
3.8K
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
3.8K
01:13Gas Chromatography: Overview of Detectors
371
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
371
01:19Gas Chromatography: Types of Detectors-II
316
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
316
01:13Gas Chromatography: Introduction
1.3K
Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
1.3K
01:21Gas Chromatography: Types of Detectors-I
344
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
344
01:12Chromatographic Methods: Classification
1.6K
Chromatographic techniques are classified in three ways: the classification is based on the physical state of the stationary and mobile phases, how the mobile phase and the stationary phase contact each other, or through the chemical or physical processes that isolate the components of the sample. Typically, the mobile phase is either a liquid or gas, while the stationary phase is either a solid or a liquid layer applied to a solid surface.
Chromatographic techniques are typically named by...
Chromatographic techniques are typically named by...
1.6K