Comparative anatomical evidence of the effects of two peeling methods on cassava (Manihot esculenta Crantz) roots
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Arisa, N. U.
Kadiri, A. B.
Aworh, O. C.
Federal Institute of Industrial Research, Oshodi
Cassava (Manihot esculenta Crantz) is an important widely cultivated crop in the tropics. The root is encased in a detarchable peel made of two layers of varying thickness depending on variety. They have different morphological forms and this makes their peeling by mechanical means difficult and manual peeling is slow and labourious. The effects of chemical peeling methods using NaOH/Citric acid and NaOH/NaCl solutions on the root cells were investigated with microscopy. Elongation and expansion of parenchyma and vessel members of the xylem were apparent in the chemically peeled samples. Conversely, the materials peeled manually showed the presence of tyloses (starch storage structures) and the parenchyma cells were comparatively short. Mean vessel pore diameter was 83.2μm in the manually peeled samples but it was 146.3μm in samples peeled with NaOH/Citric acid and 158.0μm in the samples peeled with NaOH/NaCl solution (p<0.05). The peeling action of the two peeling agent resulted in the disrupted of the integrity of the root cells.
Anatomy , Cassava , Chemical Peeling , Manual Peeling , Research Subject Categories::NATURAL SCIENCES
Arisa, N. U., Kadiri, A. B. and Aworh, O. C. (2016). Comparative anatomical evidence of the effects of two peeling methods on cassava (Manihot esculenta Crantz) roots. Journal of Industrial Research and Technology, Vol.5: 93 - 102pp.