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Satomi?Koseki Rie?Ootake Noboru?Katoh Kunihiko?KonnoEmail author 《Fisheries Science》2005,71(2):388-396
To evaluate the quality of frozen surimi, the ATPase assay system was applied to pH stat. Surimi homogenate was prepared without
washing procedures as a material for the measurement. Among the possible compounds frozen surimi contains, Mg ion slightly
inhibited Ca-ATPase activity, while sugars or polyphosphate did not. Thus, the surimi homogenate was directly used for ATPase
assay. The quality of surimi samples with various commercial grades were analyzed by measuring Ca-ATPase activity and protein
content to obtain ATPase total activity. SA grade surimi showed high total activity, and was clearly distinguished from the
second grade ones by the total Ca-ATPase activity. The specific Ca-ATPase activity contributed to the total activity more
than the protein content. These results demonstrated that employment of surimi homogenate and the pH stat method made the
total activity measurement of surimi easy and rapid. 相似文献
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Nobuyuki Hirai Kooji Ootake Kyouji Suzuki Nobuo Sobue Munehiro Date Toyoko Watanabe 《Journal of Wood Science》1998,44(1):35-39
The piezoelectricity of cyanoethylated hydroxyethylcellulose was investigated. Elastic, piezoelectric, and dielectric relaxations were observed at –80° to –60°C and 0° to 20°C at a frequency of 10Hz. The activation energy is about 9–15 kcal/mol in the low temperature region and about 30–45 kcal/mol at room temperature. These relaxations in the low temperature region may be caused by the motion of the cyanoethyl group and those at room temperature mostly by the motions of the main chain. Cyanoethylated hydroxyethylcellulose has a high piezoelectric strain constant (d
25), which is the largest value among the cellulose derivatives and is almost the same as the value for polyvinylidene fluoride. The electromechanical coupling factor for cyanoethylated hydroxyethylcellulose was small. 相似文献
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Kon Tatsuya Watanabe Noriko Ootake Hironori Fuji Shin-ichi 《European journal of plant pathology / European Foundation for Plant Pathology》2022,163(4):789-797
European Journal of Plant Pathology - Diseases associated with tomato spotted wilt orthotospovirus (TSWV) are a serious threat to vegetable production worldwide. In 2019, leaf necrosis disease was... 相似文献
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