CAJ | 학술논문

为提高紫胶产品质量,避免嗅觉异味,采用动态顶空密闭循环吸附法和热脱附-气相色谱/质谱(TCT-GC/MS)联用技术对紫胶原胶、颗粒紫胶、常温干燥法漂白紫胶、真空冷冻干燥法漂白紫胶、热挤干燥法漂白紫胶的挥发物进行捕集和分析检测.结果表明:不同紫胶原料及产品的挥发物化学成分以苯系物为主,所占比例分别达各自挥发物总量的90%、90%、60%、30%、80%以上;由于除杂、干燥等原因,不同紫胶原料及产品中的挥发物检出种类及数量有不同程度增减,漂白加工对紫胶挥发物无明显影响;紫胶生产利用中应注意选择合理技术以减少挥发性异味.
위제고자효산품질량,피면후각이미,채용동태정공밀폐순배흡부법화열탈부-기상색보/질보(TCT-GC/MS)련용기술대자효원효、과립자효、상온간조법표백자효、진공냉동간조법표백자효、열제간조법표백자효적휘발물진행포집화분석검측.결과표명:불동자효원료급산품적휘발물화학성분이분계물위주,소점비례분별체각자휘발물총량적90%、90%、60%、30%、80%이상;유우제잡、간조등원인,불동자효원료급산품중적휘발물검출충류급수량유불동정도증감,표백가공대자효휘발물무명현영향;자효생산이용중응주의선택합리기술이감소휘발성이미.
In order to improve the quality of lac products and avoid odor, volatile components from 5 different lac raw materials and final products were trapped by a dynamic head-space closed cycle adsorption method and analyzed by thermal cryo-trapping-gas chromatography/mass spectrometry (TCT-GC/MS). Results showed that benzene homologues were predominant, which were over 90% in volatile components from lac raw materials, over 90% from seed lac, over 60% from bleached shellac dried at room temperature, over 30% from lyophilized bleached shellac and over 80% from heating-crashed bleached shellac. Volatile chemical components in different raw materials and final products were also different due to various purification and drying styles. No significant change in volatile components was observed dinting bleaching of lac. Therefore, proper techniques will be benefited for avoiding odor during lac processing and utilization.