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Effect of storage environment on carrot root rots and biochemical changes during storage.

Odebode, A. C.; Unachukwu, N. E.;

Zeitschrift fur Lebensmittel-Untersuchung und -Forschung Year: 1997 Vol: 205 Issue: 4 Pages: 277-281 Ref: 22 ref.

1997

บทคัดย่อ

Effect of storage environment on carrot root rots and biochemical changes during storage.

The optimum temperature and relative humidity for the development of carrot root rot in Nigeria during storage were found to be 20 deg C and 60%, respectively, and rot development increased as these environmental factors increased. Both temperature and relative humidity enhanced the biodeterioration of the carrot root through an increase in the diameter of the rotted area of infected roots. The storage rot was caused by Rhizopus oryzae, Trichoderma harzianum, Botryodiplodia theobromae, Aspergillus niger and A. flavus. The fungi enter through wounds and natural openings. The level of total soluble sugar in rotted carrot root was substantially decreased 2-4 days after infection and paper chromatography showed the presence of glucose, maltose, sucrose, lactose and galactose in healthy carrot roots, while only lactose and galactose were present in infected roots. The ascorbic acid, total nitrogen, crude protein, crude fibre, fat and mineral contents in infected carrot roots reduced as the storage pe

riod increased.