Ultrasound-Assisted Extraction and GC-MS Analysis of Volatile Oil from Rape Flowers

doi:10.7506/spkx1002-6630-201318020

Abstract

Abstract:

The volatile oil of rape flower was extracted by ultrasound-assisted extraction method and its chemical
composition was analyzed by GC-MS. Using an orthogonal array design, we determined the optimal extraction conditions
to be 20 min, 60 kHz and 1:40 (g/mL) for extraction time, ultrasound frequency and solid-to-solvent ratio, respectively. The
maximum yield of volatile oil under the optimized conditions was 8.12%. A total of 116 compounds were detected in the
volatile oil, of which 75 were identified for the first time, accounting for 94.29% of the total volatile compounds. The major
compounds identified were tetratetracontane (31.67%), hexatriacontane (31.24%), linolenic acid (12.00%), n-hexadecanoic
acid (5.81%), tetradecanoic acid (0.85%), dodecanoic acid (0.54%), gamolenic acid (0.54%), doconexent (0.53%), and allyl
isothiocyanate (0.2%).

Key words: volatile oil of rape flowers, ultrasound-assisted extraction, gas chromatography-mass spectrometry (GC-MS)

YANG Yue-yun，WANG Xiao-guang，ZHOU Juan. Ultrasound-Assisted Extraction and GC-MS Analysis of Volatile Oil from Rape Flowers[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201318020.

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Ultrasound-Assisted Extraction and GC-MS Analysis of Volatile Oil from Rape Flowers

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