摘要
利用偏振敏感光学相干层析(PS-OCT)成像技术可以测量鸡肉新鲜度对鸡肉相位延迟的影响。给出了两种组织变质过程中PS-OCT的测量结果,通过组织双折射光学特性的数据提取反映了鸡肉脱水和水解两种不同过程。脱水过程主要影响组织的折射率和微纤维尺寸,双折射随鸡肉脱水程度增加而增大,过程由表及里,最后随深度均匀分布。水解过程主要影响组织中纤维状散射单元的比例和分布一致性,双折射随鸡肉水解状态而减弱,过程是由里及表,最终随水解完成而消失。实验结果显示了PS-OCT测量能够反映组织变质过程的结构和光学特性,并具有成为检测肉类新鲜度方法的潜力。
Two type degeneration processes： dehydration and proteolysis are studied, and the description based on polarization sensitive optical coherence tomograph （PS-OCT） measurement is presented respectively. Birefringent changes due to dehydration or proteolysis process are different. For the former case, the average birefringence increases with dehydration, caused by the size and index changes of muscle fibers. However, the hydrolysis process shows an opposite tendency. The average birefringence decreases with proteolysis, which can be explained by the damage of fibrous microstructures and the appearance of isotropic scattering elements. The above experimental results reveal different optical and microstructural changes in these two degeneration processes, and can be used to evaluate the muscle quality.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2011年第12期96-101,共6页
Chinese Journal of Lasers
基金
国家自然科学基金(10974114)资助课题
关键词
生物光学
光学相干层析
双折射
偏振
biological optics
optical coherence tomography
birefrigence
polarization
