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349 results on '"Furuta, Takeshi"'

129. Dehydration of Okara with Calcium Chloride.

Author

YOSHII, Hidefumi, primary, FURUTA, Takeshi, additional, IKEDA, Miyuki, additional, NAKAGAWA, Yoshihisa, additional, HIRANO, Hiroshi, additional, MAEDA, Yuichi, additional, LINKO, Yu-Yen, additional, and LINKO, Pekka, additional

Published
1998
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138. Formation of a Polymer-Coated Inclusion Complex of D -Limonene and β -Cyclodextrin by Spray Drying.

Author

Yamamoto, Chisho, Neoh, TzeLoon, Honbou, Hirokazu, Furuta, Takeshi, Kimura, Shinichi, and Yoshii, Hidefumi

Subjects
DRYING, PARTICLE size distribution, POLYMERS, LIMONENE, CYCLODEXTRINS
Abstract

The polymer-coated inclusion complex powder formation of D-limonene and β-cyclodextrin obtained by spray drying was investigated with respect to the effects of various types of polymer coating agents on the powder particle size and morphology. The addition of the polymer coating agent affected the average particle size, morphology, and internal structures of the spray-dried powders. The average particle diameter of the uncoated spray-dried powders was approximately 5 µm. The powder particle size increased upon the addition of a polymer coating reagent. With the addition of 9 wt% of the polymer coating agent, an average diameter of approximately 80 µm was obtained for the spray-dried powder particles. However, further addition showed a negligible effect on the particle size. Inclusion complex crystals were observed on the surface and inside of the powder particles. [ABSTRACT FROM PUBLISHER]

Published
2012
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142. Kinetic Analysis and Evaluation of Controlled Release of D -Limonene Encapsulated in Spray-Dried Cyclodextrin Powder under Linearly Ramped Humidity.

Author

Yamamoto, Chisho, Neoh, TzeLoon, Honbou, Hirokazu, Yoshii, Hidefumi, and Furuta, Takeshi

Subjects
SPRAY drying, GAS chromatography, HUMIDITY, LIMONENE, CYCLODEXTRINS, ARRHENIUS equation
Abstract

A linearly ramped humidity system coupled with automatic sampling gas chromatography has been developed. The apparatus was adopted to measure the dynamic release flux of D-limonene included in spray-dried β-cyclodextrin (β-CD) and the polymer-coated counterparts under linearly ramped humidity (0.375%/min) at constant temperature (50°C). The release flux profiles of D-limonene were analyzed using a mathematical model based on an extended Arrhenius equation. The activation energy of D-limonene release flux from β-CD was 278 (kJ/mol), which was the highest among the powders and around twice as high as our previous results obtained by the conventional static method. [ABSTRACT FROM AUTHOR]

Published
2012
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143. Spray Drying of S-Adenosyl-L-Methionine in Saccharomyces cerevisiae K-9.

Author

Lauruengtana, Vichuta, Furuta, Takeshi, Kanai, Muneyoshi, Iefuji, Haruyuki, and Yoshii, Hidefumi

Subjects
*SACCHAROMYCES cerevisiae, *SPRAY drying, *METHIONINE, *STABILITY (Mechanics), *YEAST
Abstract

S-Adenosyl-L-methionine (SAM) production from Saccharomyces cerevisiae K-9 was comparatively stable under slightly acidic conditions (pH 3.0-5.0) and at low temperature (20-25°C). The kinetics of SAM degradation and 5'-methylthioadenosine (MTA) formation in yeast solution at high temperature (40-60°C) were described by zero-order reactions and the activation energy levels were 104 and 102 kJ/mol, respectively. The optimum retention of SAM after spray drying was obtained at 120°C inlet air temperature. The water content of the powder has a significant effect on the stability of SAM. The SAM yeast powder with trehalose and maltodextrin (dextrose equivalent, DE = 25), used as carrier solids, exhibited higher stability. [ABSTRACT FROM AUTHOR]

Published
2010
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148. Effects of Fish Size and Water Temperature on the Acute Toxicity of Copper for Japanese Flounder, Paralichthys olivaceus, and Red Sea Bream, Pagrus major.

Author

Furuta, Takeshi, Iwata, Nakahiro, and Kikuchi, Kotaro

Subjects
COPPER poisoning, SIZE of fishes, WATER temperature, FISH physiology, FLATFISHES, PAGRUS
Abstract

The acute toxicities of copper were examined for Japanese flounder, Paralichthys olivaceus, and red sea bream, Pagrus major, in terms of fish size and water temperature. Artificial seawater of low pH of 5.4–6.7 was used as testing water to keep dissolved copper concentration at 0.04–41 mg Cu/L. Japanese flounder of 0.3–17 g and red sea bream of 0.5–13 g were exposed to different concentrations of copper for 96 h at 20 C under semistatic condition. Median-lethal concentration for 96 h of Japanese flounder and red sea bream were 8.7–12.2 and 2.0–5.2 mg Cu/L, respectively. No significant relationships were observed between median-lethal concentrations for 96 h and fish size for Japanese flounder, while the value decreased significantly with increasing fish size for red sea bream. Effect of water temperature on the acute toxicity was examined for Japanese flounder of 0.3 and 0.4 g at 10, 15, 20, and 25 C and red sea bream of 0.5 and 1.0 g at 12, 15, 20, and 25 C. Ninety-six-hour median-lethal concentrations for Japanese flounder and red sea bream were 5.1–11.2 and 1.0–5.3 mg Cu/L, respectively. No significant relationships were observed between median-lethal concentrations for 96 h and water temperature for both fish species. [ABSTRACT FROM AUTHOR]

Published
2008
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