FOOD SCIENCE ›› 2017, Vol. 38 ›› Issue (10): 191-198.doi: 10.7506/spkx1002-6630-201710032

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Analysis of Fatty Acids and Volatile Organic Compounds of Pyropia haitanensis under Heat Shock at Different Temperatures

SONG Yue, ZHUO Xin, CHEN Juanjuan , LUO Qijun, YANG Rui, CHEN Haimin, YAN Xiaojun   

  1. School of Marine Sciences, Ningbo University, Ningbo 315211, China
  • Online:2017-05-25 Published:2017-05-23

Abstract: To understand the changes in the fatty acid profile of Pyropia haitanensis under heat shock stress, the fatty acids (FAs) and volatile organic compounds (VOCs) of P. haitanensis under heat shock stress at different temperatures were analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that after subjecting P. haitanensis to heat shock at 20 (control), 25, 28 and 35 ℃, a total of 13 total fatty acids (TFAs), 14 free fatty acids (FFAs) and 32 VOCs were identified. The contents of saturated fatty acids (SFAs) and VOCs were increased with increasing heat shock temperature up to 28 ℃, whereas the contents of unsaturated fatty acids (UFAs) and FFAs were decreased. As the heat shock temperature further rose to 35 ℃, the contents of TFAs, FFAs and VOCs were decreased. This study may be helpful to understand the mechanism of heat resistance of P. haitanensis and its cultivation.

Key words: Pyropia haitanensis, heat shock, fatty acid, volatile organic compounds, gas chromatography-mass spectrometry

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