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Masao Tachimoto
Article type: Article
2007 Volume 61 Issue 2 Pages
99-101
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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Kenji SAKAI
Article type: Article
2007 Volume 61 Issue 2 Pages
103-110
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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We proposed a novel recycling system for municipal food waste that combines fermentation and chemical processes to produce high quality poly-L-lactate (PLLA) biodegradable plastics (Sakai K et al. 2003). The process consists of removal of endogenous D- and, L-lactic acids from minced food waste by a propionibacterium, L-lactic acid fermentation under semi-solid conditions, L-lactic acid purification via butyl-esterification, and L-lactic acid polymerization via LL-lactide. The total design of the process enables high yield of PLLA with high optical activity and novel recycling of all materials produced at each step, with minimal emissions and energy-savings. We also established non-sterile open fermentation of food waste using thermophilic bacteria for producing L-lactic acid with high optical activity. Application of aerobic and anaerobic growth of various thermophilic/thermotolerant Bacillus strains in food waste leads a novel concept of carbon dioxide-free composting of municipal food waste with producing poly L-lactic acid plastic. To control such an open system, adjustment of environmental condition such as temperature, pH, and oxygen is effective, and whole-cell FISH analysis of such mixed-culture systems is helpful for monitoring the microflora.
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Masataka Aino, Yutaka Iwamoto, Yoshihiro Hashimoto, Koichi Ishikawa
Article type: Article
2007 Volume 61 Issue 2 Pages
111-116
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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Fuminori Kaneko
Article type: Article
2007 Volume 61 Issue 2 Pages
117-121
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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The cultivated soils of Chiba prefecture have been affected by anthropogenic impact in terms of land and subsoil improvement, plowing and harrowing, fertilizer and organic matter application, etc. Soil surveys of the cultivated soil in Chiba prefecture were started in 1979 in order to determine whether the soil properties have changed over time at certain fixed points. The changes in the cultivated soil properties of Chiba prefecture in the last thirty years have been described as follows. (1) The Soil Environment Survey, set up 500〜558 fixed points in cultivated soil in Chiba prefecture, and continued monitoring from 1979 to 1997. From 1998, the Soil Monitoring Survey set up 373〜380 fixed points was started. These surveys carried out in a 5 years period and tested for pedological and edaphological properties. The pedological survey was conducted to monitor the changes of the gley horizon depth of paddy fields and the content of organic matter of upland fields. The edaphological properties were studied soil fertility on soil chemical and physical aspects such as the contents of exchangeable bases (CaO, MgO, K_2O extracted with 1M NH_4OAc), Truog P_2O_5, three phases ratio and available pore ratio, etc. Local farmer's soil management methods and fertilizer applications were investigated by using a questionnaire. (2) The changes in paddy soil properties The percentages of well, poorly drained and no-changed paddy soils at 73 points were 48%, 10% and 42%, respectively. These changes show that soil improvement related to effluent from agricultural land has affected the depth of the gley horizon considerably. Because of soil managements by farmers, the contents of exchangeable bases trended to increase, but the contents of Truog P_2O_5 and available SiO_2 trended to decrease at the plow layer. (3) The changes in upland soil properties The contents of exchangeable CaO and Troug P_2O_5 of the plow layer trended to increase. The decreasing of available pore ratio showed that this change in upland soil was caused by too much tillage in the soil management of farmers.
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Yoshimiki Amemiya
Article type: Article
2007 Volume 61 Issue 2 Pages
123-128
Published: September 01, 2007
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Michio Yasuda
Article type: Article
2007 Volume 61 Issue 2 Pages
129-134
Published: September 01, 2007
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Yosuke Yanai, Koki Toyota, Masanori Okazaki
Article type: Article
2007 Volume 61 Issue 2 Pages
135-146
Published: September 01, 2007
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[in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
147-
Published: September 01, 2007
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[in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
149-
Published: September 01, 2007
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[in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
150-152
Published: September 01, 2007
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[in Japanese], Peter Frenzel
Article type: Article
2007 Volume 61 Issue 2 Pages
153-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
153-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
154-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
154-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
155-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
155-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
156-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
156-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
157-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
157-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
158-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
158-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
159-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
159-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
160-
Published: September 01, 2007
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
160-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
161-
Published: September 01, 2007
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
161-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
162-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
162-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
163-
Published: September 01, 2007
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
163-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
164-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
164-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
165-
Published: September 01, 2007
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
165-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
166-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
166-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
167-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
167-
Published: September 01, 2007
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Abdul HADI, Oslan JUMADI, Kazuyuki INUBUSHI, Kazuyuki YAGI
Article type: Article
2007 Volume 61 Issue 2 Pages
168-
Published: September 01, 2007
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Oslan JUMADI, Masahiko SAIGUSA, Kazuyuki INUBUSHI
Article type: Article
2007 Volume 61 Issue 2 Pages
168-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
169-
Published: September 01, 2007
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[in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
169-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
170-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
2007 Volume 61 Issue 2 Pages
170-
Published: September 01, 2007
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[in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
171-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
171-
Published: September 01, 2007
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Hongsheng Lu, Yoshinori Sato, Reiko Fujimura, Yoko Katayama, Hiroyuki ...
Article type: Article
2007 Volume 61 Issue 2 Pages
172-
Published: September 01, 2007
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
Article type: Article
2007 Volume 61 Issue 2 Pages
173-
Published: September 01, 2007
Released on J-STAGE: May 31, 2017
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