P. Thomas et al., X-RAY-IMAGING FOR DETECTING SPONGY TISSUE, AN INTERNAL DISORDER IN FRUITS OF ALPHONSO MANGO (MANGIFERA-INDICA L), Journal of Horticultural Science, 68(5), 1993, pp. 803-806
An internal physiological ripening disorder, ''spongy tissue'', affect
s about 30% of 'Alphonso' mangoes, the most popular Indian cultivar. F
ruits show no external symptoms at harvest or on ripening but cutting
reveals internal damage to the mesocarp which adversely affects fruit
quality. Both fully grown green, unripe mangoes and ripe fruits show s
pongy tissue. A non-destructive x-ray inspection method has been devel
oped to detect affected mangoes. X-ray photographs and x-ray images of
fruits having spongy tissue show dark grey patches corresponding to i
nternal cavities in contrast to light grey areas of healthy flesh. The
method could be used for quality control for on-line detection and se
paration of mangoes having spongy tissue prior to packaging, by monito
ring x-ray screen images.