Determination of effective moisture diffusivity of banana using thermogravimetric analysis

Joardder, Mohammad Uzzal Hossain, Karim, Azharul, Brown, Richard J., & Kumar, Chandan (2014) Determination of effective moisture diffusivity of banana using thermogravimetric analysis. Procedia Engineering, 90, pp. 538-543.

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Abstract

Drying has been extensively used as a food preservation procedure. The longer life attained by drying is however accompanied by huge energy consumption and deterioration of quality. Moisture diffusivity is an important factor that is considered essential to understand for design, analysis, and optimization of drying processes for food and other materials. Without an accurate value of moisture diffusivity, drying kinetics, energy consumption, quality attributes such as shrinkage, texture, and microstructure cannot be predicted properly. However, moisture diffusivities differ due to variation of composition and microstructure of foodstuff and drying variables. For a particular food, it changes with many factors including moisture content, water holding capacity, process variables and physiochemical attributes of food. Published information on moisture diffusivities of banana is inadequate and sometimes inconsistent due to lack of precise repeatable analysis techniques. In this work, the effective moisture diffusivity of banana was determined by Thermogravimetric Analysis (TGA), which ensures precise measurements and reproduction of experiments. A TGA Q500 V20.13 Build 39 was deployed to obtain the drying curve of the food material. It was found that effective moisture diffusivity ranged from 6.63 x10-10 to 1.03 x10-9 and 1.34 x10-10 to 6.60 x10-10 for isothermal at 70 0C and non-isothermal process respectively.These values are consistent with the value of moisture diffusivity found in the literature.

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3 citations in Scopus
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2 citations in Web of Science®

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ID Code: 81778
Item Type: Journal Article
Refereed: Yes
Additional Information: Paper presented in 10th International Conference on Mechanical Engineering, ICME 2013
Additional URLs:
Keywords: Drying, Moisture diffusivity, Drying Kinetics, Thermo gravimetric Analysis
DOI: 10.1016/j.proeng.2014.11.769
ISSN: 1877-705
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > FOOD SCIENCES (090800)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > FOOD SCIENCES (090800) > Food Engineering (090802)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Energy Generation Conversion and Storage Engineering (091305)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 The Authors
Copyright Statement: This is an open access article under the CC BY-NC-ND license
Deposited On: 12 Feb 2015 23:04
Last Modified: 11 Dec 2016 23:47

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