Deterioration of Celosia (Celosea Argentea) and Pepper (Capsicum Frutescens) In a Metal-In-All Evaporative Cooler

Research Area: Volume 2 Issue 3, May. 2013 Year: 2013
Type of Publication: Article Keywords: Deterioration, Evaporative Cooler, Temperature, Relative Humidity, Storage
Authors:
  • Falayi F. R.
  • J. Isa
Journal: IJEIR Volume: 2
Number: 3 Pages: 217-222
Month: May
Abstract:
Due to the high rate of deterioration of fruits and vegetables particularly after harvesting in Nigeria, there is need for the development of an efficient storage structure for such highly perishable products. A metal in wall evaporative cooler was evaluated using fresh pepper and celosia to ascertain the optimum period that they could be stored without losing their essential nutritive values. The metal-bin walled evaporative cooling system consists of a brick wall, a cooling chamber (metallic box) and a coarse sand which act as the evaporating medium. The study revealed that there were continuous decrease in the food quality parameters such as ash content from 2.95% to 1.83% for celosia and 1.03% to 0.17% for pepper, fat content decreased from 1.80% to 1.04% for celosia and 1.14% to 0.89% for pepper, carbohydrate content decreased from 4.06% to 0.03% for celosia and 7.88% to 3.66% for pepper, protein content decreased from 4.77% to 4.51% for celosia and 2.61% to 2.05 for pepper and fibre content decreased from 2.73% to 2.49% for celosia and 1.09% to 0.80% for pepper, while the value of moisture content increased from 83.69% to 90.10% for celosia and 86.25% to 92.43% for pepper with increase in storage days. It was discovered that the cooling chamber had an average temperature drop of about 7° C when compared the ambient temperature and an average relative humidity drop of about 4% was experienced throughout the period of the study. The maximum storage days of celosia inside the cooler was 7 days while that of pepper inside the cooler was 10 days for both of them to retain their optimal nutritive value.

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