Research on Biomechanical Properties of Laver (Porphyra yezoensis Ueda) for Mechanical Harvesting and Postharvest Transportation

This paper investigates the effect of origin, harvest times and loading rates on biomechanical properties laver, aiming to develop laver harvesting postharvest transportation equipment. The values changing regular were obtained via a combination morphological mechanical tests as well numerical statistics. correlation between biological was detected simultaneously. results show that are affected dramatically by origin times. length, width, thickness mass from Dalian exceeded those found in Qingdao Lianyungang. increased, whereas length-to-width ratio decreased with increasing time. Meanwhile, also influenced significantly rates, Tensile shear strength displayed an overall decreasing trend, adhesive force adhesiveness general increased rate. tensile strengths greatest for Qingdao, while Dalian. strength, delay In addition, at different positively correlated. maximum 3.56 MPa, 4.79 0.32 N 1.01 N·mm, respectively. These believed be able provide reference design optimization machineries such harvest, processing.