Watanabe Oyster Laboratory Company Ltd

Hachiōji, Japan

Watanabe Oyster Laboratory Company Ltd

Hachiōji, Japan
SEARCH FILTERS
Time filter
Source Type

Patent
Watanabe Oyster Laboratory Co. | Date: 2017-06-28

Problem The present invention is to provide a generation method that can generate 3, 5-dihydroxy-4-methoxybenzyl alcohol, which was not found at all from raw oyster meat originally, at an extraction phase of oyster meat essence. Solution The present invention heats raw oyster meat from which 3, 5-dihydroxy-4-methoxybenzyl alcohol is not detected in a raw state at 98C to 100C for six hours or more to generate 3, 5-dihydroxy-4-methoxybenzyl alcohol from oyster meat liquid on which the heating process has been performed.


Takeda A.,University of Shizuoka | Tamano H.,University of Shizuoka | Ogawa T.,University of Shizuoka | Takada S.,University of Shizuoka | And 3 more authors.
Behavioural Brain Research | Year: 2012

Dietary zinc deficiency elicits neuropsychological symptoms and cognitive dysfunction. To pursue the mechanisms of these symptoms, in the present study, the relationship among serum glucocorticoid, chelatable zinc in the synaptic cleft and brain function based on behavior was examined in young rats fed a zinc-deficient diet for 4 weeks. Serum glucocorticoid level was significantly increased in zinc-deficient rats. However, the induction of in vivo dentate gyrus LTP and object recognition memory were not affected in zinc-deficient rats. Chelatable zinc levels were decreased in the stratum lucidum of the hippocampal CA3, but not in the molecular layer of the dentate gyrus. It is reported that dentate gyrus LTP and object recognition memory are affected in clioquinol (30. mg/kg)-administered rats, in which chelatable zinc is significantly decreased in the molecular layer of the dentate gyrus. Thus, the significant decrease in chelatable zinc in the molecular layer of the dentate gyrus may be required for object recognition memory deficit in zinc deficiency. On the other hand, the time of grooming in the open-field test was decreased in zinc-deficient rats. Immobility time in the forced swim test was increased in zinc-deficient rats, but not in clioquinol-administered rats, in which chelatable zinc was more markedly decreased than in zinc-deficient rats, suggesting that the lack of chelatable zinc does not increase depression-like behavior. These results suggest that the chronic increase in serum glucocorticoid level is involved in the increase in depression-like behavior rather than the decrease in chelatable zinc after 4-week zinc deficiency. © 2011 Elsevier B.V.


Watanabe M.,Watanabe Oyster Laboratory Co. | Tamano H.,University of Shizuoka | Kikuchi T.,Watanabe Oyster Laboratory Co. | Takeda A.,University of Shizuoka
Neurochemistry International | Year: 2010

Dietary zinc deficiency elicits abnormal behavior in stressful environment. It is possible that abnormal corticosterone secretion in zinc deficiency is linked to abnormal behavior. To understand the increase in depression-like behavior in zinc deficiency, in the present study, serum corticosterone concentration was checked in young rats fed a zinc-deficient diet for 2 weeks after exposure to acute stress. Serum corticosterone concentration was higher in zinc-deficient rats after exposure to water-immersed and forced swim stress. Immobility time in the forced swim test was significantly increased in zinc-deficient rats, but not in pair-fed rats, suggesting that the increase in depression-like behavior is due to zinc deficiency rather than decreased food intake. The increase in immobility time in zinc deficiency was restored to the control level by feeding of the control diet. In dexamethasone suppression test, serum corticosterone concentration was markedly decreased in both the control and zinc-deficient rats. These results suggest that excessive corticosterone secretion after exposure to stress is linked to the increase in depression-like behavior in zinc deficiency. It has been reported that exposure to stress and glucocorticoids facilitates the increase in extracellular glutamate in the hippocampus. When the hippocampus was stimulated with 100 mM KCl, the concentration of extracellular glutamate was more increased in zinc-deficient rats. In hippocampal slices from zinc-deficient rats, the decrease in FM4-64 fluorescence (exocytosis) was more facilitated. It is likely that zinc deficiency excessively excites glutamatergic neurons in the hippocampus after exposure to acute stress. This excessive excitation seems to contribute to susceptibility to stress after 2-week zinc deprivation and its related behavior such as the increase in depression-like behavior. © 2009 Elsevier Ltd.


Takata M.,Soka University | Fukushima K.,Watanabe Oyster Laboratory Co. | Kino-Kimata N.,Soka University | Nagao N.,University Putra Malaysia | And 2 more authors.
Science of the Total Environment | Year: 2012

In Japan, a revised Food Recycling Law went into effect in 2007 to promote a "recycling loop" that requires food industries to purchase farm products that are grown using food waste-derived compost/animal feed. To realize and expand food recycling, it is necessary to evaluate how the recycling facilities work in the recycling loop. The purpose of this study is to assess the environmental and economic efficiency of the food recycling facilities that are involved in the recycling loop, which are also known as looped facilities. The global warming potential and running cost of five looped facilities were evaluated by LCA (life cycle assessment) and LCC (life cycle cost) approaches: machine integrated compost, windrow compost, liquid feed, dry feed, and bio-gasification. The LCA results showed low total GHG (greenhouse gas) emissions of -126 and -49kg-CO2/t-waste, respectively, for dry feed and bio-gasification facilities, due to a high substitution effect. The LCC study showed a low running cost for composting facilities of -15,648 and -18,955yen/t-waste, respectively, due to high revenue from the food waste collection. It was found that the mandatory reporting of food waste emitters to the government increased collection fees; however, the collection fee in animal feed facilities was relatively low because food waste was collected at a low price or nutritious food waste was purchased to produce quality feed. In the characterisation survey of various treatment methods, the composting facilities showed a relatively low environmental impact and a high economic efficiency. Animal feed facilities had a wide distribution of the total GHG emissions, depending on both the energy usage during the drying process and the substitution effect, which were related to the water content of the food waste and the number of recycled products. In comparison with incineration, the majority of the food recycling facilities showed low GHG emissions and economic effectiveness. This paper also reported on the effects of recycling loops by comparing looped and non-looped animal feed facilities, and confirmed that the looped facilities were economically effective, due to an increased amount of food waste collection. © 2012 Elsevier B.V.


To provide a method for producing an oyster meat essence that more amply incorporates an antioxidant substance with high ORAC value as follows. A portion of an oyster meat extract more amply incorporating an antioxidant substance with high ORAC value is selected. An extraction method that allows incorporating further large amount of antioxidant substance with high ORAC value is employed. The beneficial oyster meat extract can be efficiently extracted in large amounts. Object An oyster meat is stored in an extraction container where water is accumulated. An oyster meat essence is extracted to generate an extract liquid. The extract liquid is injected to a centrifuge, and concurrently the centrifuge is rotated at a centrifugal acceleration where an antioxidant substance with high antioxidative potency and ORAC value is separated and removed from the extract liquid. The antioxidant substance with higher antioxidative potency and ORAC value is separated. Thus, the oyster meat essence incorporating a large amount of antioxidant substance with high antioxidative potency and ORAC value is obtained.


To provide a method for producing an oyster meat essence that more amply incorporates an antioxidant substance with high ORAC value as follows. A portion of an oyster meat extract more amply incorporating an antioxidant substance with high ORAC value is selected. An extraction method that allows incorporating further large amount of antioxidant substance with high ORAC value is employed. The beneficial oyster meat extract can be efficiently extracted in large amounts. Object An oyster meat is stored in an extraction container where water is accumulated. An oyster meat essence is extracted to generate an extract liquid. The extract liquid is injected to a centrifuge, and concurrently the centrifuge is rotated at a centrifugal acceleration where an antioxidant substance with high antioxidative potency and ORAC value is separated and removed from the extract liquid. The antioxidant substance with higher antioxidative potency and ORAC value is separated. Thus, the oyster meat essence incorporating a large amount of antioxidant substance with high antioxidative potency and ORAC value is obtained.


Patent
Watanabe Oyster Laboratory Co. and Hokkaido University | Date: 2013-12-04

Problem To provide an antioxidant, an antioxidant composition, and a method for producing the antioxidant and the antioxidant composition, which feature a high content rate and degree of extraction of substances. These substances are taurine, glycogen, protein, so-called blood platelet anticoagulant with zinc, fat-soluble vitamin with a high activation such as vitamin D, and other useful substances. The antioxidant and the antioxidant composition also feature a so-called antioxidative property, which has recently attracted attention. Solution The present invention, for example, includes 3,5-dihydroxy-4-methoxybenzyl alcohol.


Patent
Watanabe Oyster Laboratory Co. | Date: 2010-07-29

The invention relates to the preparation of oyster flesh extracts. Raw oyster flesh is placed in an extractor with a solution stored in it. The extractor is closed up tight and pressurized to 1 atm or higher to extract oyster flesh extracts from the raw oyster flesh, and they are fed into the solution in the extractor. An extraction solution with the oyster flesh extracts fed in concentrated solution to precipitate out the oyster flesh extracts. The precipitates are dried into dry oyster flesh extracts.


Patent
Watanabe Oyster Laboratory Co. | Date: 2014-09-02

Problem The present invention is to provide a generation method that can generate 3,5-dihydroxy-4-methoxybenzyl alcohol, which was not found at all from raw oyster meat originally, at an extraction phase of oyster meat essence. Solution The present invention heats raw oyster meat from which 3,5-dihydroxy-4-methoxybenzyl alcohol is not detected in a raw state at 98 C. to 100 C. for six hours or more to generate 3,5-dihydroxy-4-methoxybenyl alcohol from oyster meat liquid on which the heating process has been performed.


Patent
Watanabe Oyster Laboratory Co. | Date: 2011-10-20

The invention relates to the preparation of oyster flesh extracts. Raw oyster flesh is placed in an extractor with a solution stored in it. The extractor is closed up tight and pressurized to 1 atm or higher to extract oyster flesh extracts from the raw oyster flesh, and they are fed into the solution in the extractor. An extraction solution with the oyster flesh extracts fed in concentrated solution to precipitate out the oyster flesh extracts. The precipitates are dried into dry oyster flesh extracts.

Loading Watanabe Oyster Laboratory Company Ltd collaborators
Loading Watanabe Oyster Laboratory Company Ltd collaborators