活橙 C 深层卸妆油:富含天然橘子精油,清洁的同时能够柔和肌肤,油性介质能够彻底清除脸上的化妆残迹,保证清洁后的每一个毛孔都能够自由呼吸。活橙 C 美白水润保湿霜:天然春黄菊植物提取液,能够舒缓肌肤。最神奇的地方在于,洁白的乳霜...活橙 C 深层卸妆油:富含天然橘子精油,清洁的同时能够柔和肌肤,油性介质能够彻底清除脸上的化妆残迹,保证清洁后的每一个毛孔都能够自由呼吸。活橙 C 美白水润保湿霜:天然春黄菊植物提取液,能够舒缓肌肤。最神奇的地方在于,洁白的乳霜抹在脸上,轻轻拍打后,乳霜会变成透明的水珠,让皮肤极易吸收,保湿效果绝赞。活肤面膜:特含的 ORANGE EXTRACT 能够消除皮肤自由基,软化皮肤角质,而乳酸及丝氨酸等天然保温因子则能够长时间保持肌肤润泽,增加皮肤弹性。展开更多
The effect of microwave （MW） heating on the dielectric properties and oxidation processes of virgin olive oil and refined sunflower oil were determined by dielectric and UV- spectroscopy. Samples were heated in the ...The effect of microwave （MW） heating on the dielectric properties and oxidation processes of virgin olive oil and refined sunflower oil were determined by dielectric and UV- spectroscopy. Samples were heated in the microwave oven （850 W, 2.450 MHz） for 0 to 14 minutes. The results show degradation of dielectric characteristics, conductivity and oxidative stability of investigated oils, increasing with the exposure time. UV spectrum shows only one defined peak at 206 nm for olive oil confirming the dominant presence of monounsaturated fats and four peaks for sunflower oil （203 nm, 230 nm, 269 nm and 278 nm） dependent on polyunsaturated acid fats contents. Increasing of absorbance at all peak wave lengths indicates production of lipid oxidation, due to formation of conjugated monoenes and dienes and in small amounts due to trienes and secondary products like ketoaldehydes. Dielectric constant for olive oil is stable and almost unchangeable with MW radiation while sunflower oil＇s c＇ oscillates around the origin value in greater rate. Dielectric loss e＂ decreases with increasing time of MW radiation and its maximum shifts towards higher frequencies for sunflower oil indicating shortening of the relaxation times, while for olive oil it is unchanged. Cole-Cole analysis show the presence of only one relaxation process in the oils. Conductivity of oils is increasing in similar way with increasing frequency following the Jonscher＇s power law and is not changed with MW exposure time. Olive oil has conductivity higher for four orders of magnitude than sunflower oil, which is connected to the high content of monounsaturated fats. The differences between sunflower and olive oil characteristics are discussed.展开更多
文摘活橙 C 深层卸妆油:富含天然橘子精油,清洁的同时能够柔和肌肤,油性介质能够彻底清除脸上的化妆残迹,保证清洁后的每一个毛孔都能够自由呼吸。活橙 C 美白水润保湿霜:天然春黄菊植物提取液,能够舒缓肌肤。最神奇的地方在于,洁白的乳霜抹在脸上,轻轻拍打后,乳霜会变成透明的水珠,让皮肤极易吸收,保湿效果绝赞。活肤面膜:特含的 ORANGE EXTRACT 能够消除皮肤自由基,软化皮肤角质,而乳酸及丝氨酸等天然保温因子则能够长时间保持肌肤润泽,增加皮肤弹性。
文摘The effect of microwave （MW） heating on the dielectric properties and oxidation processes of virgin olive oil and refined sunflower oil were determined by dielectric and UV- spectroscopy. Samples were heated in the microwave oven （850 W, 2.450 MHz） for 0 to 14 minutes. The results show degradation of dielectric characteristics, conductivity and oxidative stability of investigated oils, increasing with the exposure time. UV spectrum shows only one defined peak at 206 nm for olive oil confirming the dominant presence of monounsaturated fats and four peaks for sunflower oil （203 nm, 230 nm, 269 nm and 278 nm） dependent on polyunsaturated acid fats contents. Increasing of absorbance at all peak wave lengths indicates production of lipid oxidation, due to formation of conjugated monoenes and dienes and in small amounts due to trienes and secondary products like ketoaldehydes. Dielectric constant for olive oil is stable and almost unchangeable with MW radiation while sunflower oil＇s c＇ oscillates around the origin value in greater rate. Dielectric loss e＂ decreases with increasing time of MW radiation and its maximum shifts towards higher frequencies for sunflower oil indicating shortening of the relaxation times, while for olive oil it is unchanged. Cole-Cole analysis show the presence of only one relaxation process in the oils. Conductivity of oils is increasing in similar way with increasing frequency following the Jonscher＇s power law and is not changed with MW exposure time. Olive oil has conductivity higher for four orders of magnitude than sunflower oil, which is connected to the high content of monounsaturated fats. The differences between sunflower and olive oil characteristics are discussed.
