TPA (Texture profile analysis) and firmness tests were performed with a TA.HDi Texture
Analyzer (Stable Micro Systems Ltd, Godalming, UK) using a 250 N load cell and the
application program Texture Expert for Windows
TM
, version 2.61. During the tests, the
different sample temperatures were maintained using a Temperature Controlled Peltier
Cabinet (XT/PC) coupled to a heat exchanger and PID control unit