苹果梨静载机械特性的研究.pdfVIP

90 2007, Vol. 28, No. 08 食品科学 ※基础研究 杨晓清，陈忠军，朱丽静 (内蒙古农业大学食品科学与工程学院，内蒙古 呼和浩特 010018) ：本实验针对苹果梨在采摘、储运及深加工的各环节中可能出现的由于砸、摔、挤压以及相互间的碰撞 等机械胁迫作用造成的机械损伤以及深加工过程中的切片、压榨问题进行了静载机械特性研究。实验结果表明，果 实受压时的生物屈服极限和破坏极限随压缩速率增大而相应增大；体积及成熟度较大的果实受压时均较早进入屈服 状态并易发生破裂。果实肉质结构的各向异性使不同部位受压产生明显的差异性，赤道部位的抗压性明显低于果梗 周围，实验结果为果实深加工机械参数的设计提供了理论基础。 ：苹果梨； 静载；压缩；机械特性 Research on Mechanical Properties of Apple-pears under Static Loading YANG Xiao-qing，CHEN Zhong-jun，ZHU Li-jing (College of Food Science and Engineering, Inner Mongolia Agricultural University, Huhhot 010018, China) Abstract ：Solve both the problem of mechanical damage caused by compressing, impacting and dropping down to ground during harvest, transportation and storage, and the problem of cutting slice and pressing during the process of by-products, the mechanical properties were tested. The results showed that there is a maximum in both yield force and break force with increasing loading rate; The more mature degree and the larger size, and the micro tissues of fruits more easily are destroyed and more easily equator are lower than that of the other positions. The results break; The properties of anti-compression of the flesh around provide a theoretical basis for the design for parameters processing machines improved. Key words：apple-pears；static loading；compression；mechanical properties 中图分类号：S183 文献标识码：A 文章编号：1002-6630(2007)08-0090-04 苹果梨品质好，长势旺，肉质细嫩清脆，果汁含 设备相关参数的选择、设计并未与果实本身的力学特性 量多，糖分高，营养价值较高，且耐寒、丰产、极 相结合，这样往往会造成机械设备动力的浪费或不足以 耐贮藏。栽培面积很大，在辽 、冀、蒙、甘、宁、 及因加工神杯参数选择不当造成的产品缺陷等。基于上 青、新等北方十几省区市均有栽培。在北方梨产区，