Petracek P. D., Bukovac M. J.
Department of Horticulture, Michigan State University, East Lansing, Michigan 48824.
Plant Physiol. 1995 Oct;109(2):675-679. doi: 10.1104/pp.109.2.675.
Rheological properties were determined for cuticular membranes (CMs) enzymatically isolated from mature tomato (Lycopersicon esculentum Mill. cv Pik Red) fruit. The cuticle responded as a viscoelastic polymer in stress-strain studies. Both CM and dewaxed CM expanded and became more elastic and susceptible to fracture when hydrated, suggesting that water plasticized the cuticle. Dewaxing of the CM caused similar changes in elasticity and fracturing, indicating that wax may serve as a supporting filler in the cutin matrix. Exposure of the cuticle to the surfactant Triton X-100 did not significantly affect its rheological properties.
对从成熟番茄（番茄品种Pik Red）果实中酶法分离得到的角质膜（CMs）的流变特性进行了测定。在应力-应变研究中，角质层表现为粘弹性聚合物。水合时，CM和脱蜡CM均会膨胀，变得更具弹性且更易断裂，这表明水使角质层发生了塑化。CM脱蜡导致弹性和断裂特性发生类似变化，表明蜡可能在角质基质中起支撑填料的作用。将角质层暴露于表面活性剂吐温X-100中，并未显著影响其流变特性。
