Evaluation of colour and hardness changes of soft lining materials in food colorant solutions
Evaluation of colour and hardness changes of soft lining materials in food colorant solutions
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DOI：
10.1046/j.1365-2842.1999.00477.x
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发表时间：
1999-10-01
影响因子：
2.9
通讯作者：
Uzun, G
中科院分区：
文献类型：
--
作者：
Canay, S;Hersek, N;Uzun, G
本研究的目的是通过将三种市售软衬里材料暴露于 3% 赤藓红、柠檬黄和日落黄溶液中，在体外测量三种市售软衬里材料的颜色稳定性和粘弹性能。使用计算机控制的分光光度计测定颜色变化。三种软衬里材料（Molloplast B、Flexor 和 Coe Super Soft）在三种不同的食品着色剂溶液中储存 1、3 和 6 个月后测定颜色变化。 Molloplast B 的颜色变化不明显。只有 Flexor 的初始颜色值与其他时间间隔颜色测量值显着不同。另一方面，Coe Super Soft 的色差在所有比较时间间隔测量中均存在显着差异 (P < 0.05)。根据肖氏 A 硬度值，Molloplast B 在所有三种溶液中的初始硬度均为 44，6 个月后略有增加。屈肌的初始硬度为 39，6 个月后硬度发生了一些变化。 Coe Super Soft加工后相当硬，肖氏A硬度最初为89，后来增加到95。根据这些结果，当使用 Wilcoxon 符号秩检验进行比较时，只有 Coe Super Soft 的硬度值在 P < 0.05 水平上显示出统计显着性差异。结论是，硅类软衬材料似乎比丙烯酸类软衬材料更能抵抗颜色变化和硬度。
The aim of this study was to measure the colour stability and viscoelastic properties of three commercially available soft lining materials in vitro, by exposing them to 3% erythrosine, tartrazine and sunset yellow solutions. The colour changes were determined using a computer controlled spectrophotometer. The colour change of three soft lining materials-Molloplast B, Flexor and Coe Super Soft-were determined after 1, 3 and 6 months storage in three different food colorant solutions. The colour changes of Molloplast B was not noticable. Only the initial colour value of Flexor was significantly different from the other time interval colour measurements. On the other hand, the colour difference of Coe Super Soft was found to be significantly different at all comparative time interval measurements (P < 0.05). According to Shore A hardness values, Molloplast B had an initial hardness of 44 in all three solutions, and there was a slight increase after 6 months. Flexor had an initial hardness of 39, at the end of 6 months the hardness changed a little. Coe Super Soft was fairly hard after processing and Shore A hardness was initially 89 which increased to 95 later on. According to these results, only the hardness values of Coe Super Soft showed a statistically significant difference when compared using Wilcoxon signed rank test at the P < 0.05 level. AS a conclusion, silicon type soft lining material seems to be more resistant to colour change and hardness than the acrylic type soft liners.