Nuclear magnetic resonance imaging of fresh and frozen courgettes

TY - JOUR

T1 - Nuclear magnetic resonance imaging of fresh and frozen courgettes

AU - Duce, S. L.

AU - Carpenter, T. A.

AU - Hall, L. D.

PY - 1992

Y1 - 1992

N2 - The internal structure of courgette and the effect of freezing the courgette was investigated by nuclear magnetic resonance imaging. The skin, vascular tissue, cortex, seed-bed and seeds were clearly delineated in the fresh vegetable; however, the image of frozen/thawed courgette showed very little contrast between the different tissues. Freezing ruptures the cell walls and alters the tissue morphology; this affects the transverse relaxation of water in the tissue, which in turn changes the image contrast. This report demonstrates that a correct theory to explain the mechanisms that cause proton relaxation in tissues is vital for correlating image contrast with the physicochemical properties of water in plant tissue.

AB - The internal structure of courgette and the effect of freezing the courgette was investigated by nuclear magnetic resonance imaging. The skin, vascular tissue, cortex, seed-bed and seeds were clearly delineated in the fresh vegetable; however, the image of frozen/thawed courgette showed very little contrast between the different tissues. Freezing ruptures the cell walls and alters the tissue morphology; this affects the transverse relaxation of water in the tissue, which in turn changes the image contrast. This report demonstrates that a correct theory to explain the mechanisms that cause proton relaxation in tissues is vital for correlating image contrast with the physicochemical properties of water in plant tissue.

UR - https://www.scopus.com/pages/publications/0027067278

U2 - 10.1016/0260-8774(92)90032-2

DO - 10.1016/0260-8774(92)90032-2

M3 - Article

AN - SCOPUS:0027067278

SN - 0260-8774

VL - 16

SP - 165

EP - 172

JO - Journal of Food Engineering

JF - Journal of Food Engineering

IS - 3

ER -