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Related Concept Videos

Volatilization01:10

Volatilization

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Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
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Volatile compound profiling from soybean oil in the heating process.

Lin Xiao1,2, Chongwei Li3, Duo Chai1,2

  • 1School of Food Science and Technology Dalian Polytechnic University Dalian Liaoning.

Food Science & Nutrition
|March 10, 2020
PubMed
Summary
This summary is machine-generated.

Heating soybean oil produces 72 volatile compounds, with aldehydes and alcohols forming critical off-flavors at 120°C. Temperature significantly impacts soybean oil flavor profiles.

Keywords:
cookingheating processsoybean oilvolatile compound

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Area of Science:

  • Food Chemistry
  • Analytical Chemistry
  • Sensory Science

Background:

  • Soybean oil heating is complex, influencing its volatile compound composition.
  • Understanding these volatiles is crucial for controlling flavor and quality.

Purpose of the Study:

  • To profile volatile compounds generated during soybean oil heating.
  • To determine the formation temperatures of key volatiles.
  • To correlate volatile profiles with flavor characteristics.

Main Methods:

  • Vacuum-assisted headspace solid-phase microextraction (SPME).
  • Gas chromatography-mass spectrometry (GC-MS) for volatile identification.
  • Principal Component Analysis (PCA) for flavor profiling.

Main Results:

  • Identified 72 volatile compounds: 27 aldehydes, 14 alcohols, 10 ketones, 6 furans, 9 aromatics, and 6 acids/esters.
  • Aldehydes and alcohols formed at 120°C, contributing significantly to off-flavors.
  • Ketones and furans formed at 150°C; acids detected at 180°C.
  • Volatile compound content increased with temperature; PCA showed distinct flavor profiles at different temperatures.

Conclusions:

  • 120°C is a critical temperature for off-flavor development in heated soybean oil due to aldehyde and alcohol formation.
  • Heating temperature profoundly alters soybean oil's volatile composition and flavor characteristics.
  • Volatile profiling provides insights into the chemical basis of soybean oil flavor during thermal processing.