Recovery of antioxidant activity from carnosol quinone: antioxidants obtained from a water-promoted conversion of carnosol quinone     

Masuda T  Kirikihira T  Takeda Y 《Journal of agricultural and food chemistry》2005,53(17):6831-6834

Carnosol is one of the main antioxidants in sage and rosemary. Although carnosol quinone is the antioxidation product of carnosol and has a very weak antioxidant activity, its treatment in water-containing solvent restored its strong antioxidant activity. HPLC analysis of the water-stimulated recovery reaction of the antioxidant activity revealed that the strong activity was due to the reproduced carnosol. The analysis also showed that an almost equal amount of quinone derivatives of rosmanol (rosmanol quinone) was produced in the reaction along with the carnosol. The rosmanol was formed by the addition of 1 equiv of water and the following isomerization from carnosol quinone in the water-containing solvent. The formed rosmanol was also found to be oxidized by the remaining carnosol quinone to produce rosmanol quinone. At the same time, carnosol quinone was reduced to afford carnosol. This redox phenomenon is an important part of the mechanism for the recovery of the antioxidant activity from carnosol quinone under the water-containing conditions.  相似文献   

Measurement of Fertilizer Leaching from the Root Zone Using an Automated Infiltration Soil Water Sampler in an Unsaturated Sandy Field     

Naoko Higashi  Yasushi Mori  Mitsuhiro Inoue 《Soil Science and Plant Nutrition》2005,51(7):1023-1033

In sandy fields with vegetable cultivation, fertilizer leaching may occur and it should be well-controlled. The development of a direct soil water sampler is necessary to examine solute transport and fertilizer leaching in the vadose zone, since soil water reflects timely monitoring of data more accurately than groundwater. We developed a Suction-Controlled Flux Sampler to collect infiltration soil water in a sandy soil. In the present study, we monitored fertilizer leaching in an unsaturated sandy field during the rainy season, while evaluating the sampling performance of SCFS for the sampling of infiltration water. SCFS directly collected the infiltration water effectively over a period of several months in the sandy field and recorded the Water-Collecting Efficiency from 92 to 115% under various infiltration conditions during a period of 50 d. WCE was affected by the rainfall intensity as well as by previous rainfall, which enhanced WCE. The results obtained from the use of SCFS and several sensors demonstrated that the amount of leached water remained low as long as irrigation was applied according to the cultivation manual. However, an unexpected heavy rainfall event led to fertilizer leaching. The fertilizer leaching trend was effectively monitored by several sensors inserted into the soils, while detailed analysis of the components was performed after collection by using SCFS. Direct access to infiltration water enabled to examine the infiltration process and detailed variations in the amounts of discharged anions. The sensor-equipped monitoring system together with SCFS is suitable for precise management of fertilizer and irrigation application.  相似文献   

Effects of nitric oxide donor and nitric oxide synthase inhibitor on ruminal contractions in conscious sheep     

T. Onaga  H. Okada  S. Hagiwara  C. Nagashima  H. Inoue  W. Korczynski  S. Kato 《Research in veterinary science》2001,71(3):189-195

The present study was planned to evaluate a role of nitric oxide (NO) in the regulation of regular ruminal contractions in conscious sheep. Intravenous infusion of S-nitroso-acetyl-DL-penicillamine (SNAP) at doses of 3-30 nmol kg(-1) min(-1)for 30 minutes inhibited both the amplitude and frequency of ruminal contractions in a dose-dependent manner. However, intravenous infusion of Nomega-nitro-L-arginine-methyl ester (L-NAME) at doses of 0.3-3.0 micromol kg(-1) min(-1)did not alter the basal tone of intraruminal pressure and the amplitude of ruminal contractions. The frequency of contractions was slightly inhibited by L-NAME infusion at 1.0 micromol kg(-1)min(-1). The effects of L-NAME were abolished by simultaneous infusion of L -arginine at 30 micromol kg(-1) min(-1). These results suggest that exogenous NO can diminish the ruminal contractions, while endogenous NO is not involved in the regulatory mechanism of basal tone and regular phasic contractions of the rumen in healthy sheep.  相似文献   

Liver lesions and serum antibodies in mice surviving Tyzzer's disease     

H Nakayama  S Inoue  A Nii  A Yasuda  N Okada  K Fujiwara 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1986,48(1):189-192

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A case report on thrombo-erythroleukosis in a hen     

S Sugano  M Inoue 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1963,25(1):43-52

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Sarcocystis tenella from the sheep in Japan (Protozoa, Apicomplexa)     

Y Imai  I Inoue  M Yamada 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1989,51(4):815-817

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Prevention of calf diarrhea with an immunoglobulin diet in beef herds     

T Murakami  N Hirano  A Inoue  K Tsuchiya  K Chitose  K Ono  T Yanagihara 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1986,48(5):879-885

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An equine case of granular cell tumor with chondroplasia     

S Inoue  N Okada  K Midoro  H Nakayama  R Takahashi  K Fujiwara 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1987,49(3):581-583

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Histopathology of spermatocele of fowl (author's transl)]     

M Nakamura  M Inoue 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1979,41(1):41-51

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Statistical study on the semen characteristics collected from pairs of sibling bulls used at artificial insemination centers     

T Inoue 《The Japanese journal of veterinary research》1969,17(1):1-24

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