Dynamic in situ imaging of semi-hard cheese microstructure under large-strain tensile deformation: Understanding structure-fracture relationships

摘要: Abstract Changes in the microstructure of semi-hard cheeses were observed situ under tensile deformation by placing a microtensile stage directly confocal scanning laser microscope, and recording force/displacement data simultaneously. On deformation, detachment fat globules their subsequent release from cheese matrix observed, suggesting that they are weakly bonded to or entrapped within matrix. Moreover, an inherent micro-defect was at curd granule junction matrix, which fractured along such micro-defects could be key formation undesirable slits cracks. Furthermore, fracture behaviour varied with ripening temperature, coagulant type, inhibition residual chymosin activity. Overall, this study demonstrated potential dynamic imaging for developing greater understanding breakdown matrices.