Maeda, T., Kokawa, M., Nango, N., Miura, M., Araki, T., Yamada, M., Takeya, K., and Sagara, Y. 2015. Development of a quantification method of the gluten matrix in bread dough by fluorescence microscopy and image analysis. ⇒Springer Link ⇒ResearchGate Food and Bioprocess Technology vol. 8, Issue 6, pp 1349–1354 （査読有） Abstract The gluten matrix in bread dough develops through the mixing process, and its microstructure is known to greatly affect the quality of the end product. In this study, a novel method to quantify the gluten matrix was developed by applying image analysis methods used in the area of bone histomorphometry to fluorescence images of dough. Acquisition of clear images of the gluten matrix and the incorporated starch has been made possible by a novel fluorescence visualization method using acid magenta and the blue fluorescent filter. The images with high contrast between gluten, starch, and other constituents allowed accurate binarization between gluten and background. Bread dough at four mixing stages was made to observe gluten development. Three parameters were extracted from the gluten area: gluten thickness, total length of gluten per area, and average length of gluten. At the final …
Development of a quantification method of the gluten matrix in bread dough by fluorescence microscopy and image analysis
Estimating the possible range of recycling rates achieved by dump waste pickers: The case of Bantar Gebang in Indonesia.
Sasaki, S. and Araki, T. 2014. Estimating the possible range of recycling rates achieved by dump waste pickers: The case of Bantar Gebang in Indonesia. ⇒SAGE Journals ⇒ResearchGate Waste Management & Research 32: 474-481. Abstract This article presents informal recycling contributions made by scavengers in the surrounding area of Bantar Gebang final disposal site for municipal solid waste generated in Jakarta. Preliminary fieldwork was conducted through daily conversations with scavengers to identify recycling actors at the site, and then quantitative field surveys were conducted twice. The first survey (n = 504 households) covered 33% of all households in the area, and the second survey (n = 69 households) was conducted to quantify transactions of recyclables among scavengers. Mathematical equations were formulated with assumptions made to estimate the possible range of recycling rates achieved by dump waste pickers. Slightly over 60% of all respondents were involved in informal recycling and over 80% of heads of households were waste pickers, normally referred to as live-in waste pickers and live-out waste pickers at the site. The largest percentage of their spouses were family workers, followed by waste pickers and housewives. Over 95% of …
Household income, living and working conditions of dumpsite waste pickers in Bantar Gebang: Toward integrated waste management in Indonesia.
Sasaki, S., Araki, T., Tambunan, A. H., and Prasadja, H. 2014. Household income, living and working conditions of dumpsite waste pickers in Bantar Gebang: Toward integrated waste management in Indonesia. ⇒ScienceDirect ⇒ResearchGate Resources, Conservation and Recycling 89: 11-21. 査読有 Highlights •The average monthly income of waste pickers in Bantar Gebang was US 216 dollars. •The incomes of waste pickers were equivalent to minimum wages in Jakarta in 2013. •Living and conditions of the scavengers at the site were horrible and dangerous. •Special attentions are required because scavengers cannot easily change their jobs. •Indonesian national waste laws and regulations should be properly applied. Abstract This paper clarifies household income, living and working conditions of dumpsite waste pickers at Bantar Gebang final disposal site for municipal solid waste generated in Jakarta, and investigates the feasibility of integrating the informal sector into formal waste management in Indonesia. The first author did fieldwork for totally 16 months at the site and quantitative field surveys were conducted twice during the period. All respondents in the first round quantitative survey (n = 1390) were categorized as follows: waste pickers, family workers, wage labors, bosses, family of …
Employer–employee and buyer–seller relationships among waste pickers at final disposal site in informal recycling
Sasaki, S., Araki, T., (2013). Employer–employee and buyer–seller relationships among waste pickers at final disposal site in informal recycling: The case of Bantar Gebang in Indonesia. Habitat International, 40(0), 51-57. Abstract This paper presents an informal recycling system managed by scavengers in Bantar Gebang final disposal site for municipal solid waste generated in Jakarta. Data were obtained through daily conversations with scavengers who deal with recyclables in the site. Seven processing steps of informal recycling were observed at the site. Scavengers at the site were referred to as their managerial names in their community, and then at least 8 types of recycling actors were identified: 1) big boss, 2) small boss, 3) big middleman, 4) small middleman, 5) live-in waste picker, 6) live-out waste picker, 7) independent waste picker, and 8) daily worker. Live-in and live-out waste pickers were continuously employed by their bosses, while independent waste pickers and daily workers depended on temporary employer–employee relationships. The positions of the recycling actors were not always fixed and there were many paths of career tracks and setbacks mainly due to individual economic status. All big bosses and big middlemen have built direct connections …
Image analysis of bread crumb structure in relation to mechanical properties.
Shibata, M., Tsuta, M., Sugiyama, J., Fujita, K., Kokawa, M., Araki, T., & Nabetani, H. (in press). Image analysis of bread crumb structure in relation to mechanical properties. International Journal of Food Engineering. http://www.degruyter.com/view/j/ijfe.2013.9.issue-1/ijfe-2012-0163/ijfe-2012-0163.xml
Fluorescence fingerprint imaging of gluten and starch in wheat flour dough with consideration of total constituent ratio
Kokawa, M., Sugiyama, J., Tsuta, M., Yoshimura, M., Fujita, K., Shibata, M., Araki, T., Nabetani, H., Fluorescence fingerprint imaging of gluten and starch in wheat flour dough with consideration of total constituent ratio, Food Science and Technology Research (in press) https://www.jstage.jst.go.jp/article/fstr/19/6/19_933/_article
Development of a Novel Staining Procedure for Visualizing the Gluten–Starch Matrix in Bread Dough and Cereal Products.
Maeda, T., Kokawa, M., Miura, M., Araki, T., Yamada, M., Takeya, K., Sagara, Y. (2013). Development of a Novel Staining Procedure for Visualizing the Gluten–Starch Matrix in Bread Dough and Cereal Products. Cereal Chemistry Journal, 90(3), 175-180.
Development of a Quantitative Visualization Technique for Gluten in Dough Using Fluorescence Fingerprint Imaging.
Kokawa, M., Sugiyama, J., Tsuta, M., Yoshimura, M., Fujita, K., Shibata, M., Araki, T., Nabetani, H. (2012). Development of a Quantitative Visualization Technique for Gluten in Dough Using Fluorescence Fingerprint Imaging. Food and Bioprocess Technology.
Yield and physicochemical properties of mechanically extracted crude Jatropha curcas L oil.
Tambunan AH, Situmorang JP, Silip JJ, Joelianingsih A, and Araki T (2012). Yield and physicochemical properties of mechanically extracted crude Jatropha curcas L oil. Biomass and Bioenergy 43, 12-17.
Package design of ready-to-drink coffee beverages based on food kansei model—Effects of straw and cognition terms on consumer’s pleasantness.
Akiyama, M., Tatsuzaki, M., Michishita, T., Ichiki, T., Sumi, M., Ikeda, M., Araki, T., & Sagara, Y. (2012). Package design of ready-to-drink coffee beverages based on food kansei model—Effects of straw and cognition terms on consumer’s pleasantness. Food and Bioprocess Technology, 5(5), 1924-1938.