Enthalpy and heat capacity of fried shrimp at freezing and refrigeration temperatures

M. O. Ngadi, M. S. Chinnan, P. Mallikarjunan

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The specific heat capacity and the enthalpy of fried butterfly shrimp were measured at temperatures ranging from -40°C to 30°C using the differential scanning calorimeter. Shrimp samples with moisture contents 75%, 70%, 55%, 45% and 42% (wet basis (wb)) and the corresponding fat contents 0.9%, 2.1%, 4.5%, 6% and 6.9% (wb) were used in the study. The specific heat and enthalpy of samples varied as functions of temperature, moisture and fat contents. Samples with lower moisture contents exhibited typical thawing characteristics of solutions with phase change drawn out in a wider temperature range. Phase change in the higher moisture product was sharper with a more pronounced peak. Regression models were developed to describe the variation of the enthalpy and specific heat of shrimp. Empirical models were developed based on theoretical considerations of the freezing process. The regression equations fitted experimental data closely and could be used together with other pertinent properties in the analysis and design of fried shrimp freezing processes.

Original languageEnglish (US)
Pages (from-to)75-81
Number of pages7
JournalLWT - Food Science and Technology
Volume36
Issue number1
DOIs
StatePublished - Jan 1 2003

Fingerprint

Refrigeration
enthalpy
refrigeration
specific heat
Freezing
freezing
shrimp
Hot Temperature
heat
Temperature
phase transition
Fats
water content
Butterflies
temperature
lipid content
calorimeters
sampling
thawing
butterflies

Keywords

  • Differential scanning calorimeter
  • Enthalpy
  • Fried food
  • Shrimp
  • Specific heat capacity

Cite this

Enthalpy and heat capacity of fried shrimp at freezing and refrigeration temperatures. / Ngadi, M. O.; Chinnan, M. S.; Mallikarjunan, P.

In: LWT - Food Science and Technology, Vol. 36, No. 1, 01.01.2003, p. 75-81.

Research output: Contribution to journalArticle

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