Texture analysis: Textures of dried herbs were evaluated using
instrumental method. A TA.XT2 i plus Texture Analyser (Stable
Micro Systems, Godalming, UK) was used for force/
displacement measurement with a 5 kg load cell, using a 2 mm
cylinder spherical stainless probe SMS (P/2) to measure the force
required to penetrate an individual dried kaffir lime leaf sample
placed on the centre of corresponding platform with 10 mm
diameter. The test settings were test speed 0.5 mm/s, trigger force
10 g, travel distance of the probe 8 mm. The values of rupture
strength and brittleness reported were the mean of 20
measurements.