Next Article in Journal
Information Geometric Measures of Complexity with Applications to Classical and Quantum Physical Settings
Previous Article in Journal
Ball Convergence of a Parametric Efficient Family of Iterative Methods for Solving Nonlinear Equations
Article

Modeling and Thermodynamic Analysis of the Water Sorption Isotherms of Cottonseed Products

Southern Regional Research Center, USDA Agricultural Research Service, 1100 Robert E. Lee Blvd., New Orleans, LA 70124, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Alessandra Durazzo
Received: 13 May 2021 / Revised: 7 July 2021 / Accepted: 8 July 2021 / Published: 12 July 2021
(This article belongs to the Section Biological Sciences and Engineering)
Due to their hygroscopic characteristics, equilibrium moisture contents of agricultural products and byproducts are important factors of their quality. Defatted cottonseed meal (CSM), washed cottonseed meal (WCSM) and cottonseed protein isolate (CSPI) can be used as energy and protein sources of animal feedstuff or industrial raw materials. Information on their moisture adsorption behaviors is needed for their storage conditions and quality control. Thus, this work measured the equilibrium moisture sorption isotherms of CSM, WCSM and CSPI, at 15, 25, 35 and 45 °C. When the moisture contents of the samples were compared at a constant temperature, the general trend of decreasing moisture content was in the order of CSPI < WCSM < CSM for water activity <0.6, but the trend reversed to the order of CSM < WCSM < CSPI for water activity >0.6. Relevant sorption isotherm equations were tested for accurate fit to the moisture adsorption data. Modelling results indicated that the G.A.B. (Guggenheim-Anderson-de Boer) model was a consistently good fit for the data among all sample types and all temperatures. This work provides some insight on designing or selecting appropriate procedures for the handling, aeration, storage and processing of these cottonseed meal products. In particular, it suggests that moisture content should be kept at around 8% for safe storage of these products at room temperature (around 25 °C) but below 5% when they are exposed to higher temperature conditions (e.g., >45 °C). View Full-Text
Keywords: adsorption isotherm; cottonseed; defatted meal; moisture content; protein isolate adsorption isotherm; cottonseed; defatted meal; moisture content; protein isolate
Show Figures

Figure 1

MDPI and ACS Style

He, Z.; Zhang, D.; Cheng, H.N. Modeling and Thermodynamic Analysis of the Water Sorption Isotherms of Cottonseed Products. Foundations 2021, 1, 32-44. https://0-doi-org.brum.beds.ac.uk/10.3390/foundations1010005

AMA Style

He Z, Zhang D, Cheng HN. Modeling and Thermodynamic Analysis of the Water Sorption Isotherms of Cottonseed Products. Foundations. 2021; 1(1):32-44. https://0-doi-org.brum.beds.ac.uk/10.3390/foundations1010005

Chicago/Turabian Style

He, Zhongqi, David Zhang, and Huai N. Cheng 2021. "Modeling and Thermodynamic Analysis of the Water Sorption Isotherms of Cottonseed Products" Foundations 1, no. 1: 32-44. https://0-doi-org.brum.beds.ac.uk/10.3390/foundations1010005

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop