Characteristic drying curves of cocoa beans

Wan Ramli Wan Daud, Meor Zainal Meor Talib, Mahamad Hakimi Ibrahim

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The characteristic drying curves of cocoa beans are determined by using a tunnel drier where conditioned air passes a single cocoa bean suspended from an electronic balance in the test section. Weight loss, and temperatures of air, testa and nib of the cocoa bean is monitored on personal computers. The normalised drying rate versus the normalised moisture content is regressed by least square method to fit a new polynomial model for the penetration falling rate period and a linear model for the regular regime falling rate period. It can be concluded that there are three drying periods for cocoa beans namely the constant drying rate period, the penetration falling rate period and the regular regime falling rate period. The polynomial model estimates the penetration period quite well whereas the linear model estimates the regular regime quite well as well. There is no observable influence of relative humidity and air temperature on the characteristic drying curve of cocoa beans. However, the air velocity seems to have some influence on the curve.

Original languageEnglish
Pages (from-to)2387-2396
Number of pages10
JournalDrying Technology
Volume14
Issue number10
Publication statusPublished - 1996

Fingerprint

Cocoa
drying
Drying
falling
curves
Air
penetration
air
polynomials
Personal computers
personal computers
least squares method
estimates
Atmospheric humidity
Tunnels
Moisture
moisture content
tunnels
humidity
Temperature

Keywords

  • Characteristic Drying Curves
  • Cocoa Beans
  • Drying Kinetics

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)

Cite this

Wan Daud, W. R., Meor Talib, M. Z., & Ibrahim, M. H. (1996). Characteristic drying curves of cocoa beans. Drying Technology, 14(10), 2387-2396.

Characteristic drying curves of cocoa beans. / Wan Daud, Wan Ramli; Meor Talib, Meor Zainal; Ibrahim, Mahamad Hakimi.

In: Drying Technology, Vol. 14, No. 10, 1996, p. 2387-2396.

Research output: Contribution to journalArticle

Wan Daud, WR, Meor Talib, MZ & Ibrahim, MH 1996, 'Characteristic drying curves of cocoa beans', Drying Technology, vol. 14, no. 10, pp. 2387-2396.
Wan Daud WR, Meor Talib MZ, Ibrahim MH. Characteristic drying curves of cocoa beans. Drying Technology. 1996;14(10):2387-2396.
Wan Daud, Wan Ramli ; Meor Talib, Meor Zainal ; Ibrahim, Mahamad Hakimi. / Characteristic drying curves of cocoa beans. In: Drying Technology. 1996 ; Vol. 14, No. 10. pp. 2387-2396.
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