CAJ | 학술논문

目的：建立简便、快速的餐饮废油、生物柴油以及合格食用油的鉴别检测方法。方法选择市售普通食用油、餐馆用油、生物柴油和餐饮废油(包括潲水油和煎炸老油)为研究对象，以1745 cm-1波数处的共有吸收峰为基准，比较各油脂红外光谱特征吸收峰相对强度；在230~800 nm 范围内，比较各油脂的紫外可见吸收曲线，对油脂品质进行比较鉴别。结果比较红外图谱发现，各油脂在3473、3008、1652 cm-1附近对1745 cm-1的吸收峰相对强度差别较大，可以此作为判别依据；通过观察比较各油脂在紫外可见光谱图中的起始和终止吸收波长，以及在668 nm处是否有较高的吸光度或特征吸收峰，可对油脂品质进行鉴别。结论综合红外和紫外可见两种光谱方法的检测结果，本方法可初步地快速鉴别合格食用油与餐饮废油。
목적：건립간편、쾌속적찬음폐유、생물시유이급합격식용유적감별검측방법。방법선택시수보통식용유、찬관용유、생물시유화찬음폐유(포괄소수유화전작로유)위연구대상，이1745 cm-1파수처적공유흡수봉위기준，비교각유지홍외광보특정흡수봉상대강도；재230~800 nm 범위내，비교각유지적자외가견흡수곡선，대유지품질진행비교감별。결과비교홍외도보발현，각유지재3473、3008、1652 cm-1부근대1745 cm-1적흡수봉상대강도차별교대，가이차작위판별의거；통과관찰비교각유지재자외가견광보도중적기시화종지흡수파장，이급재668 nm처시부유교고적흡광도혹특정흡수봉，가대유지품질진행감별。결론종합홍외화자외가견량충광보방법적검측결과，본방법가초보지쾌속감별합격식용유여찬음폐유。
Objective To establish a simple, fast distinguish method for waste cooking oil, biodiesel and qualified cooking oils. Methods Several common cooking oils bought from supermarket, roadside restaurant oil, biodiesel and waste cooking oil (including hogwash oil and frying oil) were compared based on the relative intensity ratio of infrared (IR) spectra with a characteristic absorption peaks 1745 cm-1. Ultraviolet-visible (UV-vis) spectra (230～800 nm) were successively used to distinguish the difference. Results The relative inten-sity ratio of IR spectra (absorption peaks 1745 cm-1) could be obviously distinguished, especially at 3473 cm-1/1745 cm-1, 3008 cm-1/1745 cm-1 and 1652 cm-1/1745 cm-1, and thus can be used as basis for discrimination. By comparing the starting and end wavelength of UV-vis spectra of the test oils, and whether the spectrum has higher absorbance or obvious absorption peak at 668 nm, the quality of test oil could be recognized. Conclusion The preliminary identification method can be used to quickly identify the qualified oils from waste oils.