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Antioxidative Activities and Angiotensin I-converting Enzyme Inhibitory Activities of Enzymatic Hydrolysates from Commercial Kamaboko Type SamplesDepartment of Food Science and Technology, Tokyo University of Agriculture, Hokkaido 0992493, Japan t1nagai{at}bioindustry.nodai.ac.jp,nagatakenagatake@yahoo.co.jp
Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima 7398528, Japan
Department of Food Science and Technology, Tokyo University of Agriculture, Hokkaido 0992493, Japan Enzymatic hydrolysates were prepared from commercially available kamaboko type samples using three gastrointestinal proteases and protein proteases. The yields of these hydrolysates were about 1031% and these protein contents ranged from 62 to 533 g/mg per sample powder on their wet weight basis. The hydrolysates showed higher antioxidative activities and scavenging activities against active oxygen species such as hydroxyl radical and superoxide anion radical. Moreover, these hydrolysates exhibited high angiotensin I-converting enzyme inhibitory activites that were similar or higher than those from various fermented foods such as fish sauce, sake, soy sauce, vinegar, miso and natto. The antioxidative and antihypertensive activities of commercially available kamaboko type samples were not related to the colour of the samples. The results indicated that enzymatic hydrolysates from commercially available kamaboko type samples, whose health benefits are scientifically supported, have the potential to be an increasingly important component of a healthy lifestyle and to be beneficial to the public and the food industry.
Key Words: kamaboko enzymatic hydrolysates antioxidative activity antihypertensive effect
Food Science and Technology International, Vol. 12, No. 4,
335-346 (2006) |
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