Progress 09/01/01 to 08/31/04
Outputs The main objective of this project was to study physicochemical properties and microstructures of high acyl and high/low acyl mixed gellan gels as affected by various intrinsic and extrinsic factors. The research was completed in April 2004. We have completed four manuscripts (three published and one submitted) based upon the results of the research. Through this research, we have gained a good understanding of the physicochemical properties of high acyl and high/low acyl mixed gellan gels including water holding capacity, gelling temperature and textural properties
Impacts This study revealed a significant difference in physicochemical properties of high acyl gellan compared with our previous results on low acyl gellan gum, and the possibility to achieve a wide range of intermediate properties with high/low acyl mixed gellan. In particular, we have explored and developed a novel near infrared (NIR) spectroscopic method for the characterization of gellan gum. The NIR method provides the potential for rapid, nondestructive characterization of biopolymers, which will be commonly used in analytical methods.
Publications
- Huang, Y., Cavinato, A.G., Tang, J., Swanson, B.G., Lin, M., and Rasco, B.A. 2004. Characterization of sol-gel transitions of gellan gum with near infrared spectroscopy. Carbohydrate Polymers. (Accepted for Publication.)
- Huang, Y., Singh, P.P., Tang, J., and Swanson, B. 2004. Gelling temperatures of high acyl gellan as affected by monovalent and divalent cations with dynamic rheological analyses. Carbohydrate Polymers 56(1):27-33.
- Huang, Y., Tang, J., and Swanson, B.G. 2004. Physicochemical properties of gellan gels. Critical Review in Food Science. (Accepted for Publication.)
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Progress 01/01/03 to 12/31/03
Outputs The main objective of this project was to study physicochemical properties and microstructures of high acyl and high/low acyl mixed gellan gels as affected by various intrinsic and extrinsic factors. The research will be completed in April 2004. We are making progress in the project and have completed four manuscripts (two published, one in press, and one submitted) based upon the results of the research. Through this research, we have gained a good understanding of the physicochemical properties of high acyl and high/low acyl mixed gellan gels including water holding capacity, gelling temperature and textural properties. This study revealed a significant difference in physicochemical properties of high acyl gellan compared with our previous results on low acyl gellan gum, and the possibility to achieve a wide range of intermediate properties with high/low acyl mixed gellan for general food applications. In particular, we have explored and developed a novel near
infrared (NIR) spectroscopic method for the characterization of gellan gum--an excellent galling agent from fermentation of starch.
Impacts The NIR method provides the potential for rapid, nondestructive characterization of biopolymers, which will be commonly used in analytical methods.
Publications
- Huang, Y., Tang, J., Swanson, B., and Rasco, B.A. 2003. Effect of calcium concentration on textural properties of high and low acyl mixed gellan gels. Carbohydrate Polymers. 54:517-522.
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Progress 01/01/02 to 12/31/02
Outputs We are making progress in the project and have completed two manuscripts based on the results from the research. The manuscripts are: 1) Huang, Y., Tang, J.*, Swanson, B., Cavinato, A.G., Lin, M., Rasco, B.A. 2002. Near infrared spectroscopy: a new tool for studying physical and chemical properties of polysaccharide gels (submitted to Carbohydrate Polymers), and 2)Huang, Y., Tang, J.*, Swanson, Rasco, B.A. Water holding capacity of high acyle gellan gels.
Impacts This research developed a novel means based on infrared spectroscopy to characterize gellan gels, especially gelation points. The results should be beneficial to other scientists working in this field.
Publications
- Huang, Y., Tang, J.*, Swanson, B., Cavinato, A.G., Lin, M., Rasco, B.A. 2002. Near infrared spectroscopy: a new tool for studying physical and chemical properties of polysaccharide gels. Carbohydrate Polymers.(in press)
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Progress 01/01/01 to 12/31/01
Outputs The project began September 2001, there is no progress to report.
Impacts (N/A)
Publications
- No publications reported this period
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