The volatile components in japonica rice were analyzed by headspace solid phase micro-extractionrn(HS-SPME) coupled with gas chromatography-mass spectrosocpy(GC-MS) The conditions of extrac-rntion including extraction temperature, extraction time, equilibration time, sample amount, desorption time and carrier gas flow rate were optimized. Extraction characteristics of three solid phase micro—extractionrnfibers--100?m PDMS, 50?m DVB/CAR/PDMS and 75?m CAR/PDMS were compared. The results indicated that the optimal conditions of analyzing volatile components in japonica rice are that selecting 50?mrnDVB/CAR/'PDMS solid phase micro-extraction fibers, sample amount of 20g, extraction temperature of 80, extraction time of 60min, equilibration time of 45min, desorption time of 5min and carrier gas flow rate of 60 mL/min.%采用顶空固相微萃取(HS-SPME)-气质(GC-MS)联用法对粳稻挥发性成分进行分析,优化萃取温度、萃取时间、平衡时间、样品量、解析时间和载气流量等萃取条件,用100 μm PDMS、50μm DVB/CAR/PDMS和75μm CAR/PDMS 3种固相微萃取头进行萃取效果的比较.结果表明:测定粳稻谷挥发性成分的最优条件为选用50 μm DVB/CAR/PDMS固相微萃取头、样品量20 g、萃取温度80℃、平衡时间60 min、萃取时间45min、解析时间5 min、载气流速60 mL/min.
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