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Volume 62, Issue 3
Displaying 1-8 of 8 articles from this issue
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Makiko SENDA, Yasuhisa KUZUHA2011 Volume 62 Issue 3 Pages 153-164
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSWe investigated the effects on nitrogen contamination of the storage conditions for whole vegetables and juice, and of the free residual chlorine in sodium hypochlorite. The effects of juice storage at 7℃ and 30℃, and of whole vegetable storage for 4 days at 7℃ and 18℃ were examined. We confirmed that free residual chlorine in sodium hypochlorite could remove nitrite and ammonium-nitrogen from vegetable juice. Cool storage, freshness, and free residual chlorine mitigated against the increase of nitrate, nitrite and ammonium-nitrogen generation in juice. Cool storage also mitigated against the generation of nitrate and ammonium-nitrogen in freshly harvested vegetables. A larger quantity of free residual chlorine was necessary to remove ammonium-nitrogen from vegetables and juices containing many organic compounds.View full abstractDownload PDF (2095K) -
Kiho KIYOE, Masako MAEKAWA2011 Volume 62 Issue 3 Pages 165-171
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSWe dyed cellulose and nylon films with onionskin extraction, quercetin and rutin. Then we measured their absorption spectra and compared them. We also evaluated their ultraviolet protection effect on nylon films which were dyed well. It was found that the absorption spectra of quercetin and rutin solution had absorption maxima (λmax ) at about 370, 260 and 200nm. The absorption spectrum of onionskin extraction had λmax at about 300nm, as well as at about 370, 260 and 200nm. In addition, spectrum of onionskin extraction had weak absorption at more than 410nm. It was similar to the absorption spectra of dyed nylon films. Concerning the ultraviolet protection effects, nylon films dyed with quercetin showed UPF50+ when the amount of dye uptake was more than 0.05mol/kg. On the other hand, nylon films dyed with onionskin extraction showed UPF50+ when the estimated uptake assumed as quercetin was more than 0.015mol/kg. In conclusion, nylon films dyed with onionskin extraction showed higher ultraviolet protection effects (UPF values) than those dyed with quercetin.View full abstractDownload PDF (1119K) -
Keiko GOTOH, Hitomi NAKATANI2011 Volume 62 Issue 3 Pages 173-178
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSIn order to investigate the effect of bath ratio on textile detergency, a washing test was carried out in aqueous detergent solutions using artificially soiled fabrics commercially available and those prepared with three model soils. The detergency evaluated by the surface reflectance method was found to decrease with a decreasing bath ratio. The reduction in detergency under a low bath ratio condition was compensated by an increase in detergent concentration and temperature of the wash bath．In terms of mechanical actions for soil removal, shaking and stirring were found to be effective under a high bath ratio condition, whereas ultrasonicwaves worked well under a low bath ratio condition. In most washing conditions, soil redeposition and fabric damage were not significantly observed. The experimental results show that detergency performance in water-saving textile washing can be maintained under adequate washing conditions with respect to detergent concentration, temperature and mechanical action.View full abstractDownload PDF (1401K)
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Tomoko Koda, Mami Ando, Mikako Takasugi, Rie Tamura, Toru Takahas ...2011 Volume 62 Issue 3 Pages 179-188
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSThis study examined the relationship between the preference for different types of soup stock and the perception of umami taste and odor among university students (n = 129, 18–24 years old). The subjects were classified into three groups: the niboshi group preferred the niboshi extract soup stock (40%); the flavored seasoning group preferred the flavored seasoning soup stock (33%); and the ‘neither’ group disliked both kinds of soup stock (27%). We conducted a multiple regression analysis involving various taste and odor factors in the niboshi and flavored seasoning groups. The significant factors for the niboshi group in determining a preference for niboshi soup stock were the intense umami taste (p<0.05) and pleasant aroma (p<0.01), while that for the flavored seasoning group in determining a preference for flavored seasoning soup stock was the intense umami taste (p<0.01). These results suggest a relationship between the preference for a specific types of soup stock and the perception of umami taste and odor.View full abstractDownload PDF (1173K) -
Mihoko DOUMYOU, Kaoru ARUGA, Hayami YOKOYAMA, Yoshiaki SHIMIZU, Mi ...2011 Volume 62 Issue 3 Pages 189-195
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSThe Indian Madder tree and the Japanese Pagoda Tree were selected for use as a natural red dye and a natural yellow dye, respectively. A simplified method of dyeing with these dyes was tried in the following way: The material containing the coloring matter was ground into powder and extracted by water at 80ºC. Silk fabric was then dyed with the residual material extract. In addition to these dyes, Gardenia Blue(GB) was used as a natural blue dye. The preparation of a color triangle was then attempted using these three dyes. The extraction efficiency was remarkably promoted by breaking up the material containing the coloring matter. By combining the two natural dyes and GB, the color triangle was prepared successfully. Therefore, the dyeing of the pre-mordanted silk fabric and the cotton fabric treated with a cationic agent was possible to achieve in one step.View full abstractDownload PDF (1278K)
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Kazuma OMACHI, Nobuko NGANGA2011 Volume 62 Issue 3 Pages 197-202
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSSkipping breakfast has become extremely common in recent times because of unhealthy eating habits. This paper aims to track the changing rates of skipping breakfast based on different birth cohorts, and to examine age, period and cohort effects depending on gender from 1975 to 2005. The following were the main results of this study: The rate of people skipping breakfast in all age groups increased during this period. This was particularly true of those in the 20-29 years old age group. The younger the cohort, the higher the rate of those who skipped breakfast. Those born between 1966 and 1975 exhibited different behavior patterns from those in older age groups. The rate of females who skipped breakfast was relatively low compared with the rate of males who did so. Even though the peak rate of both males and females was in the 20-29 age group, the rate in the 30-39 group was also relatively high. As the result of separately assessing age, period and cohort, it was discovered that the age effect in males was more pronounced than that in females. There was a remarkable increase in the period effect from 1995 to 2005. The younger birth cohorts showed the stronger cohort effects, particularly in the case of the 1966-1975 birth cohort.View full abstractDownload PDF (1046K) -
Perspectives with Regard to the Cost of Jeans.Kaoru HORIUCHI2011 Volume 62 Issue 3 Pages 203-209
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSThe purpose of this study is to develop teaching materials in order to raise awareness of globalization as part of our everyday consumption and to develop lesson plans based around this. Before trying to teach these lessons, students’ awareness concerning jeans was analyzed with the help of a questionnaire. The results of the survey clearly indicated that jeans were very popular with both male and female students. Each student surveyed owned, on average, 3.65 pairs of jeans. Although they felt that jeans priced at 850 yen were too cheap, they recognized that 3990 yen was a fair price for a pair of jeans. Based on the results of this research, the lesson was planned and put into practice in January 2010. The different prices of jeans were featured in the workshop. An American film called “China Blue”, which featured Chinese workers working very hard in a jeans manufacturing factory, was selected as teaching material. Students compared the prices of four different pairs of jeans and found that the differences came about because of the production processes and their countries of origin. It was very useful for students to realize the connection between their everyday clothes and globalization.View full abstractDownload PDF (1383K)
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Takao NISHIMURA2011 Volume 62 Issue 3 Pages 211-213
Published: March 15, 2011
Released on J-STAGE: August 01, 2013
JOURNAL FREE ACCESSDownload PDF (714K)
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