Swallowing Characteristics of Bolus of Agar Gels on the Swallowing Process

对老年和青年两组实验对象，考察琼脂果冻丸中所含的唾液以及丸的物理性质对吞咽特性的影响。研究了琼脂果冻的粒径和琼脂果冻丸中唾液的含量。同时，测定了老年人和青年人在固定时间内唾液的量和表观黏度。将黄原胶制备的模型唾液按三种不同的量加入到模型破碎的琼脂果冻中，可制得三种类型的模型咀嚼琼脂果冻。同样，将调节到三种不同粘度的模型唾液加入到模型破碎的琼脂果冻中，制成模型咀嚼琼脂果冻。研究了各模型琼脂果冻的质地特性和吞咽特性。在咀嚼琼脂果冻的颗粒大小上，老年人和年轻人之间没有差异。琼脂果冻丸中唾液的含量为15-35%，年轻人的唾液含量高于老年人。随着模型唾液量的增加，模型咀嚼琼脂胶的硬度和粘附性降低。随着唾液黏度的增加，模型咀嚼琼脂果冻的硬度降低。吞咽特性分析表明，含35%模型唾液的模型咀嚼琼脂果冻易于老年人吞咽。另一方面，含有25%模型唾液的模型咀嚼琼脂果冻易于吞咽。通过添加三种不同黏度的模型唾液调节模型琼脂胶咀嚼后的吞咽特性，老年和青年无显著差异。

For test subjects both the aged and youth, examination was made on what effects the saliva contained in the bolus of agar jelly, as well as the physical properties of the bolus, had on the swallowing characteristics. The particle size of the masticated agar jelly, and the amount of saliva contained in the bolus of agarjelly, were investigated. At the same time, the amount and apparent viscosity ofsaliva sampled from the aged and youth during a fixed period were measured. The model saliva, which was prepared With xanthan gum, was added to the model crushed agar jelly in three different quantity levels so that three types of the modelmasticated agar jelly could be prepared. Similarly, model saliva adjusted to three different levels of viscosity were added to the model crushed agar jelly to prepare the model masticated agar jelly. The texture properties and swallowing characteristics of each model masticated agar jelly were investigated. No differences between the aged and youth were recognized in the particle size of the masticated agar jelly. The amount of saliva contained in the bolus of agar jelly was 15-35%, and was higher for the youth than for the aged. The hardness and adhessiveness of the model masticated agar jelly decreased with increasing amount of model saliva. The hardness of the model masticated agar jelly decreased with increasing viscosity of the model saliva. As the results of swallowing characteristics, the model masticated agar jelly containing 35% model saliva was easy to swallow for the aged. On the other hand, the model masticated agar jelly containing 25% model saliva was easy to swallow for the youth. No significant difference between the aged and youth was recognized in the swallowing characteristics of the masticated model agar jelly adjusted by adding model saliva with three different levels of viscosity.