Teruko Nakamura

Mechanism of Wall Effect on Fluidity of Milk in a Capillary

Milk is one of the most important and popular Mo fluids containing various nutritieiits, It is significant to investigate rheological properties of milk in a Capillary to explain the milk flow on tongue and through throat for the consumer preference. In the previous papers1)-5),flow properties of milk in a capillary havs been studied by viscosity measurements with various bore-sizes of capillary viscometer and photo-microscopic observation, In this paper, effects of silicone coated glass capillary tube on flow properties of milk were elucidated in comparison with the result obtained in a non-coated glass capillary tube.

Estimation of Double Layers Flow Model for Fluidity of Milk in a Capillary

Flow properties of human milk, cow’s milk and homogenized milk were studied by using various bore-size of low shear capillary viscometer. Each milk shows characteristic shear dependence on the visccosity and viscosity values changed with the change of capillary bore-sizes. From these both shear dependence on viscosity and capillary bore-size dependence on viscosity values, the change in the dispersion state of each milk might be attributed to the formation change of the aggregate structure of milk fat globules in a capillary. From these experimental results, flow model was derived and assumed the wall layer composed of double layers in the flowing liquid in a capillary tube.

Physico-chemical property of Silkworm (Bombyx mori) blood and Hasumon Yoto(Spodoptera litura) blood

Publisher Summary To account for the dispersion state of insect blood cell, the flow property of blood of Bomhyx mori and Spodoptera litura is studied by viscosity measurement. In this experiment, three different types of sources of silkworm blood are used. The first one is the source of the original wild type of silkworm (Original type) and it has a yellow color. The second type of source is obtained from the regular type of silkworm (Regular type) and it has a white color, and the third one has the same origin as the second type (ATLANTIS) but it is obtained from a hatched egg brought back from the space shuttle put on the orbit of ATLANTIS. The Bomhyx mori blood shows a non-Newtonian flow behavior and a high viscosity value is observed at a low shear rate. The viscosity value of blood obtained from the beginning stage of the five ages of silkworm decreases, and this stage is the same stage as that containing the largest amount of N-Acetyl Neuraminic acid (NANA) in blood. The non-Newtonian flow behavior and viscosity value of the Spodoptera litura blood are shown as smaller than that of Bomhyx mori blood, and these flow properties depend on the dispersion state of the blood cell particles. From the result of an electron micrograph, it is shown that shape and aggregate structure of blood of Bomhyx mori are more complicated than those of a mammal. From this result, the schematic model of a silkworm blood cell is derived.

Free Fatty Acid Composition In A Silkworm (Bombyx Mori) Blood

Abstract The constituents of the extract from the blood of silkworm, Bombyx mori (5 th instar 2 days, 6 days and 9 days) have been studied with respect to their fatty acid contents. Twelve compounds were characterized from the extracts of silkworm. Characteristic components of free fatty acid in all days were the hexanoic acid and octanoic acid as the main component. Total free unsaturated fatty acids (cis-6, cis-9, cis-12-octadecatrienoic acid, cis-9, cis-12-octadecadienoic acid and cis-9-octadecenoic acid) were included 38.93% in 5th instar 2 days, 43.79% in 6 days, and 31.22% in 9 days, respectively. the relationship between the free fatty acid component and the viscosity of blood are also discussed.