Obtained values for hardness and cohesiveness in a TPA analysis and
for shear force (SF) of lamb loin samples injected with different amounts
of phosphates and subjected to either sous-vide cooking and oven
roasting are shown in Table 3. The interaction between cooking method
and phosphate addition significantly affected all three instrumental
texture parameters studied (p b 0.001).
Overall, phosphate addition increased the hardness of cooked lamb
loin samples, such an effect being more marked in sous vide cooking
. Despite the effect of myofibrillar and collagen
heat denaturation on cooked meat texture, water loss from the muscle
tissue upon heating also play a key role in meat toughening, so that the
greater the water lost during cooking, the higher the cooked meat toughness
(Bertram, Aaslyng,&Andersen, 2005; Palka&Daun, 1999). However,
the hardness parameter in the TPA basically assesses how a meat cube
may withstand compression; thus, the more swollen the meat becomes
due to the addition of phosphates, the greater the force that is needed
to compress it. A similar tendency was shown for SF values of sous vide
cooked lamb loins, inwhich swollen samples due to the injection of phosphates
showed higher SF values than those injectedwithwater (Table 3).
Obtained values for hardness and cohesiveness in a TPA analysis andfor shear force (SF) of lamb loin samples injected with different amountsof phosphates and subjected to either sous-vide cooking and ovenroasting are shown in Table 3. The interaction between cooking methodand phosphate addition significantly affected all three instrumentaltexture parameters studied (p b 0.001).Overall, phosphate addition increased the hardness of cooked lambloin samples, such an effect being more marked in sous vide cooking. Despite the effect of myofibrillar and collagenheat denaturation on cooked meat texture, water loss from the muscletissue upon heating also play a key role in meat toughening, so that thegreater the water lost during cooking, the higher the cooked meat toughness(Bertram, Aaslyng,&Andersen, 2005; Palka&Daun, 1999). However,the hardness parameter in the TPA basically assesses how a meat cubemay withstand compression; thus, the more swollen the meat becomesdue to the addition of phosphates, the greater the force that is neededto compress it. A similar tendency was shown for SF values of sous videcooked lamb loins, inwhich swollen samples due to the injection of phosphatesshowed higher SF values than those injectedwithwater (Table 3).
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