Optimization and modeling of the drying characteristics of janitor fish (Pterygoplichtys disjunctivus).
Date
10-2008
Degree
Bachelor of Science in Agricultural Engineering
Major Course
Major in Agricultural and Bio-Process Engineering
College
College of Engineering and Agro-Industrial Technology (CEAT)
Adviser/Committee Chair
Edgardo V. Casas
Committee Member
Engelbert K. Peralta, Jessie C. Elauria
Abstract
The determination of the drying characteristics of the janitor fish was done using the regression surface analysis and Box and Behnken design resulting in 15 runs. The samples were subjected to drying air temperature of 50°C, 60°C and 70°C, 0.21m/s 0.24m/s and 0.27 m/s air velocity, and cuts 1, 2 and 3. The responses observed were average drying rate, final moisture content, rehydration rate, rehydration ratio and moisture ratio. Analysis of variance showed that only the drying rate of the sample was significant to air temperature at 95% level. All the other dependent parameters were insignificant due to the restriction of the surface exposed on each cut and the thick scales of the samples. Using the superimposed contour plots of the dependent variables, the optimum condition were determined to be 62.5°C, 0.24 m/s and 2 cuts. Optimum values observed were compared with the predicted values and showed less than 20% error and could then be concluded acceptable. The moisture ratio data were then considered to obtain the model for the drying characteristic of the janitor fish. Using curve expert 1.3, the best fit equation was observed at run 11 and could be expressed as MR = 0.42 + 0.78cos (0.0011 + 0.78) where MR = moisture ratio, dimensionless and t = drying time, minutes an expression that can be predict the moisture at any drying time, t.
Language
English
LC Subject
Drying.
Location
UPLB College of Engineering and Agro-Industrial Technology
Call Number
LG 993.5 2008 A2 A73
Recommended Citation
Aranda, Isabel de Torres, "Optimization and modeling of the drying characteristics of janitor fish (Pterygoplichtys disjunctivus)." (2008). Undergraduate Theses. 168.
https://www.ukdr.uplb.edu.ph/etd-undergrad/168
Document Type
Thesis