Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
Mathematical Assist Design Laboratory, 4-2 Kamisadori, Maebashi, Gunma 371-0865, Japan.
J Phys Chem Lett. 2021 Feb 25;12(7):1969-1972. doi: 10.1021/acs.jpclett.0c03776. Epub 2021 Feb 16.
X-ray scattering measurements of insect body surface lipids were successfully attempted by using a synchrotron X-ray source. The temperature-dependent structural changes of the cuticular hydrocarbons covering the forewing of an American cockroach were able to be followed, which showed that the majority of the hydrocarbons were in a liquid state even far below the critical temperature of water transpiration through the body surface. The results clearly demonstrated that synchrotron radiation X-ray scattering has the potential to obtain the detailed information about the intact lipid structure and physical properties on insect body surfaces.
利用同步加速器 X 射线源成功尝试了对昆虫体表面脂质进行 X 射线散射测量。能够跟踪覆盖美洲大蠊前翅的表皮碳氢化合物的温度依赖性结构变化，结果表明，即使远低于通过体表面蒸发水的临界温度，大部分碳氢化合物仍处于液态。结果清楚地表明，同步辐射 X 射线散射有可能获得有关昆虫体表面完整脂质结构和物理性质的详细信息。
