Effects of Temperatures on Rheological Behavior of Dragon Fruit (Hylocereus sp.) Juice
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Teong Guan Chuah
In Malaysia, the dragon fruit is widely commercialized. It is extensively used in the food industry. Their use as constituents of juices, jellies, marmalades, jams, wine, beverages, etc. generates a consumer market with an increasing demand. This work aims to obtain rheological data of dragon fruit juice which is essential in optimizing equipment design, process control, and consumer acceptability of a product. In the present study, dragon fruit juice with concentrates of (10 and 12oBrix) was prepared. The rheological behavior of these concentrates was studied in the temperature range of 5, 10, 15, and 40oC. Dragon fruit juice was found to exhibit non-Newtonian, pseudoplastic behavior. Samples on both concentrations were adequately described by the rheological model. The effect of temperature on dragon fruit juice is best described by the applicability of the Arrhenius model related to apparent viscosity, ?a.
©2011 Walter de Gruyter GmbH & Co. KG, Berlin/Boston
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Articles in the same Issue
- Article
- Effectiveness of Pulsed Electric Fields in Controlling Microbial Growth in Milk
- Biochemical Changes during Alcoholic Fermentation in the Production of ``Tchapalo'', a Traditional Sorghum Beer
- Comparative Evaluation of Different Pretreatments on Tomato Slices Dried in a Cabinet Air Drier
- Effects of Temperatures on Rheological Behavior of Dragon Fruit (Hylocereus sp.) Juice
- Prediction of Physicochemical Properties of Pummelo Juice Concentrates as a Function of Temperature and Concentration
- Variation of the Physical Properties of Sheanut (Vitellaria Paradoxa Gaertn.) Kernels during Convective Drying
- Changes in Color and Total Phenolic Content of Different Cultivars of Persimmon during Dehydration
- Indirect Method of Measuring Dispersion Coefficients for Granular Flow in a Column of Dihedrons
- Formulation and Fuzzy Modeling of Viscosity of an Orange-Flavored Carboxymethylcellulose-Whey Protein Isolate Beverage
- Association of Two Enzymes for Obtaining Low Phenylalanine Protein Hydrolysates from Wheat Flour
- Shorter Communication
- Role of Glass-Transition on Fluid Transport in Porous Food Materials
- Rheological Properties of Tomato Concentrate
- Critical Review
- Application of Atomic Force Microscopy on Studying Micro- and Nano-Structures of Starch
