著者
山内 正仁 今屋 竜一 増田 純雄 山田 真義 木原 正人 米山 兼二郎 原田 秀樹
出版者
Japan Society of Civil Engineers
雑誌
環境工学研究論文集 (ISSN:13415115)
巻号頁・発行日
vol.42, pp.545-553, 2005

To help develop a technology for the conversion of the solid matter contained in sweet potato shochu lees, which is a food industrial waste, into a new resource, a study was conducted on the use of dried shochu lees as a nutrient material in the culture medium of hiratake mushrooms (Pleurotus ostreatus). Mushroom cultivation could be shortened by 4-8 days by using the shochu lees medium in lieu of the conventional rice bran medium. The mean yield in a test plot with 60% shochu lees was 137g, which was 1.6 times the yield from rice bran medium. Moreover, hiratake cultured in the shochu lees medium contained more protein than mushrooms grown on rice bran medium, indicating that the use of dried shochu lees could make it possible to commercially produce mushrooms with higher protein contents than conventionally grown mushrooms and open a way for large-scale utilization of shochu lees.
著者
青井 透 森 邦広 平野 太郎
出版者
Japan Society of Civil Engineers
雑誌
環境工学研究論文集 (ISSN:13415115)
巻号頁・発行日
vol.41, pp.97-104, 2004-11-25 (Released:2011-06-27)
参考文献数
19
被引用文献数
1

Dissolved nitrogen concentration of bulk precipitation and stream water were investigated on the Kabura river watershed (Western part of Gunma Pref.) and the Oze-numa lake. Also dissolved nitrogen concentration of stream (upper end of each river) around the Echigo Mountains including Fukushima, Niigata and Gunma Pref. were analyzed. NOx-N concentration showed most high value on the Kabura river watershed, and rather high value on the Tone river. In Niigata Prefectural side of Echigo Mountains, nitrogen concentration of the stream water lowered in 1/2 and in Fukushima side of that nitrogen concentration decreased to 1/5 level.Rather high concentration of inorganic nitrogen on the upper stream of Tone River is thought to be derived from the air contaminants which comes flying from the metropolitan area with the sea wind in summer.