Physicochemical Characterization of Heat-induced Soluble Aggregates of Bovine Globin
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概要
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Physicochemical properties of heat-induced soluble aggregates of bovine globin were studied with several physicochemical measurements and electron microscopy. A great change in ellipticity and formation of soluble aggregates of globin occurred between 45 and 50°C. Soluble aggregates of globin formed below 60°C were globular particles with a diameter of 15 to 20nm and a sedimentation coefficient and molecular weight of approx. 20S and 8×105, respectively. Their solutions were not so highly viscous. On the other hand, soluble aggregates of globin formed above 80°C were fibrous macro-aggregates with a thickness of 8 to 10nm of which the sedimentation coefficient and molecular weight were above 50 S and 106 to 108, respectively. Their solutions were highly viscous. It is suggested that a great increase in globin viscosity on heating takes place through the following process ; globular aggregates are formed spontaneously with the unfolding of globin molecules, and subsequently fibrous macro-aggregates are formed via extension and association of globular aggregates. It is also considered that fibrous macro-aggregates might form a gel at a higher concentration.
- 社団法人 日本農芸化学会の論文
著者
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Hayakawa Shigeru
Department Of Applied Biological Science Faculty Of Agriculture Kagawa University
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Suzuki Yasuyo
Department Of Biology And Geoscience Faculty Of Science Shizuoka University
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Sato Yasushi
Department Of Agricultural Chemistry Meijo University
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SATO Yasushi
Department of Agricultural Chemistry, Meijo University
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NKAMURA Ryo
Department of Food Science and Technology, Nagoya University
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SUZUKI Yasuyo
Department of Food Science and Technology, Nagoya University
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