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Lamb leg meat (LLM) was marinated using solution of sodium chloride (NaCl) concentrations (0.04 g/g) for 15 min under high pressure (HP) treatment (100–400 MPa, 25°C) to investigate meat characteristics, volatile components and microstructure. HP treatment increased process yields during marinating, especially at 200 MPa, the shearing force and hardness reached their minimum value, which indicated that HP treatment (200 MPa) can effectively improve the tenderness of LLM. The electron microscopy revealed that HP modified the myofibrillar structure in the leg muscles. With the rise of pressure, the lightness (L*) value increased significantly. The red/green hue (a*) reached the maximum value at 200 MPa. HP influenced the formation of some key volatile compounds in LLM. LLM pressurized at 200–400 MPa had lower levels of furfural than control group, LLM pressurized at 200 MPa had higher levels of N‐nonanal and N‐octanal, lower levels of palmitic acid, but oleic acid and stearic acid was not detected. Only at 200–400 MPa, 2,3‐octanedione and 2‐octanone were detected in HP‐treated LLM. PRACTICAL APPLICATIONS: High‐pressure (HP) is an effective technology as a pretreatment to postslaughter meat. Advantages include opportunities to improve tenderness and other characteristics of processed meat products by appropriate use of this technique. This study showed that application of high‐pressure premarinated treatment (200 MPa, 15 min, 25°C and 0.04 g/g salt content) could effectively improve the muscle fiber structure of lamb leg, several major volatile substances and tenderness. This work verifies the potential of HP for improving LLM characteristics and volatile components. These results can be beneficial for the applications of pressurized mutton in the mutton industry.

The electrochemical characteristics of boron-doped polycrystalline diamond thin film electrodes with 4×4 mm2 in size have been studied using cyclic voltammetry and a potentiostatic method. The diamond electrode exhibits adequate electrochemical activity and the response current changes linearly with the K3Fe(CN)6 concentrations. The response current is proportional to the square root of the scan rate, reflecting the mass transport controlled by planar diffusion. Stable mass transport was quickly established within 4 s. Good stability and reproducibility are attractive properties of the diamond electrode for sensor applications.