著者
前田 信治 清家 雅彦 中島 隆 泉田 洋司 鈴木 洋司 精山 明敏 立石 憲彦 関谷 美鈴 谷口 拓也 昆 和典 志賀 健
出版者
特定非営利活動法人 日本バイオレオロジー学会
雑誌
日本バイオレオロジー学会誌 (ISSN:09134778)
巻号頁・発行日
vol.4, no.1, pp.32-40, 1990-03-31 (Released:2012-09-24)
参考文献数
27

Relation of membrane surface structure and erythrocyte aggregation was investigated by modifying glycoproteins of erythrocytes with trypsin, chymotrypsin and neuraminidase, with a special regard to survival of erythrocytes in circulation. The velocity of erythrocyte aggregation was measured with a rheoscope combined with a video camera, an image analyzer and a computer. (1) Human aged erythrocytes fractionated by a density gradient centrifugation with Percoll were more accelerative in aggregation than young erythrocytes. Young erythrocytes induced in rat by administration of recombinant human erythropoietin were less accelerative in aggregation than normally produced erythrocytes. These phenomena were discussed on the basis of structural change of membrane surface proteins during in vivo aging of erythrocytes. (2) Erythrocyte aggregation was affected by negative charge density of membrane surface (mainly of sialic acid). But structural change of glycoproteins, especially of glycophorin A, was greatly effective on the erythrocyte aggregation. The phenomena were proposed as a model of removal of in vivo aged erythrocytes.
著者
三木 英三
出版者
特定非営利活動法人 日本バイオレオロジー学会
雑誌
日本バイオレオロジー学会誌 (ISSN:09134778)
巻号頁・発行日
vol.20, no.2, pp.32-39, 2006-06-25 (Released:2012-09-24)
参考文献数
19
被引用文献数
1

Udon (Japanese noodle) is one of the traditional foods in our country.The quality of the cooked noodle depends mainly on physical properties expressed koshi (hardness and springiness), articulation and smoothness.Therefore, the physical properties of Udons prepared under the various cooking conditions were determined by the breaking test, creep measurement and stress relaxation measurement using a rheometer and a handmade equipment. As a result of also doing the sensory evaluation, cooked Udon that was organoleptically judged to be the most delicious was soft one with a high breaking strength. By a scanning electron microscope, the gelatinization of starch near the surface of cooked Udon and the porous sponge-like structure were observed, whereas core part of the starch retained their original granular form with an adequate swelling. The cooked Udon surface seemed to form the network structure with the corrugation. This structure may be involved in the smoothness of the cooked Udon.
著者
熊谷 仁 熊谷 日登美
出版者
特定非営利活動法人 日本バイオレオロジー学会
雑誌
日本バイオレオロジー学会誌 (ISSN:09134778)
巻号頁・発行日
vol.21, no.1, pp.3-15, 2007-03-25 (Released:2012-09-24)
参考文献数
16
被引用文献数
1

The glass transition has attracted great interest from food scientists in recent years, because many phenomena related to food manufacturing and preservation could be systematically explained with a concept of glass transition: for example, food materials maintain their physical and chemical stability better in a glassy state than in a rubbery state. However, it is often difficult to apply the methodology in polymer science to the analysis of glass transition for foods. In this review, the availability of the concept of glass transition in food science and engineering was explained. Such phenomena as reaction rate of non-enzymatic browning, powder caking, and in freeze drying can be described by glass transition.In addition, the analysis of the glass transition of foods by electrical methods in our research was also reviewed. The dielectric relaxation, i.e., the peak of the dielectric loss, ε”, was observed for glassy gelatin of low moisture contents and ascribed to the local motion of molecules. However, when the ionic conductivity dominated the electrical properties, the ε” peak was masked. For analyzing such a system, the electric modulus, M* was an effective tool.
著者
王 黎曼 山本 貴嗣 久山 泰 高野 喜久雄 本田 由美子 峰下 哲
出版者
特定非営利活動法人 日本バイオレオロジー学会
雑誌
日本バイオレオロジー学会誌 (ISSN:09134778)
巻号頁・発行日
vol.13, no.1, pp.35-41, 1999-03-31 (Released:2012-09-24)
参考文献数
11

Aim: It is recently stressed that physiological state of blood viscosity plays some important role in the patho-etiology of some cardiovascular diseases. To know the closer relationship between the blood viscosity and the cardiovascular diseases, we carried out this study.Method and Subjects: We collected 118 patients (53 male, 65 female) who were diagnosed as having hypertension, hyperlipemia and/or cerebral infarction. The following items were examined.1) Blood viscosity, 2) Plasma viscosity, 3) Hematocrit, 4) Total cholesterol, 5) HDL-cholesterol, 6) Total protein, 7) Triglyceride, 8) Phospholipid, 9) Fibrinogen.Results and discussion: The blood viscosity showed higher level in 61-80 years-old group. The plasma viscosity and fibrinogen were higher in the patients over 71 years old. It is suggested the fibrinogen content closely relates to plasma viscosity. The effects of some drugs to the blood viscosity were investigated. Among them, one of β-blockers decreased blood viscosity.
著者
林 和彦 白崎 芳夫 池田 洋教 立石 哲也 下條 仁士 宮永 豊
出版者
特定非営利活動法人 日本バイオレオロジー学会
雑誌
日本バイオレオロジー学会誌 (ISSN:09134778)
巻号頁・発行日
vol.17, no.2, pp.26-32, 2003-06-30 (Released:2012-09-24)
参考文献数
12

The mechanical properties of the anterior cruciate ligament (ACL) were investigated. The method of a versatile clamp was designed to holding the femur-ACL-tibia complex (FATC). Twelve porcine FACT specimens were tested at angle 30° and the parallel direction of the ACL. The static tensile and stress relaxation tests were performed with an Instron-type universal testing machine. Differences in stress-strain behavior at the two (slow and fast) deformation rates. The ACL AM (anteromedial) bundle exhibited significant distribution of the deformation at the two deformation rates. Good agreement is obtained using Y. C. Fung's QLV (quasi-linear viscoelastic) theory relationship between theoretical and experimental data.