Toshiyuki Yamashita

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The purpose of the present study was to compare facial expression recognition in individuals with schizophrenia and normal controls using the Noh Mask Test. Fifteen men with schizophrenia and 15 normal controls were presented with a photograph of a Noh mask rotated either upward or downward from the neutral front-facing position, and an emotion label, and(More)
Soybean oil is one of the most widely consumed vegetable oils. However, under photooxidative conditions, this oil develops a beany and green off-odor through a mechanism that has not yet been elucidated. Upon photooxidation, 3-methyl-2,4-nonanedione (3-MND) produces a strong aroma. In this study, the effect of furan fatty acids and 3-MND on odor reversion(More)
Endocrine disruptors (ED) are chemicals that affect various aspects of the endocrine system, often leading to the inhibition of steroidogenesis. Current chemical safety policies that restrict human exposure to such chemicals describe often time-consuming and costly methods for the evaluation of ED effects. We aimed to develop an effective tool for accurate(More)
In order to demonstrate the potential of plant cell culture systems to produce a target natural bioactive compound, we proposed a stepwise protocol for β-thujaplicin production as follows. 1. Induction phase: Characteristics of callus cultures originating from newly flushed shoots of 10 conifer species were evaluated on different basal media such as(More)
A dynamic headspace extraction method (DHS) with high-pressure injection is described. This dynamic extraction method has superior sensitivity to solid phase micro extraction, SPME and is capable of extracting the entire gas phase by purging the headspace of a vial. Optimization of the DHS parameters resulted in a highly sensitive volatile profiling system(More)