Culture Characteristics of the Sterile <I>Ulva Lactuca</I> (Chlorophyta) in Enriched Seawater and Planning of its Production System

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  • 海水中の栄養塩を利用した不稔性アオサの培養と生産設備
  • カイスイチュウ ノ エイヨウエン オ リヨウ シタ フネンセイ アオサ ノ バイヨウ ト セイサン セツビ

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SterileUlva, which is a green alga, has the potential to grow all year round, therefore, this macroalga is expected to be a feed resource containing various nutrients such as proteins, amino acids, and minerals. Ulva lactuca was selected from the“Marine Park”in Yokohama, and its growth rate (g-dry/m2·d) was measured using a model reactor simulated the surface of the sea. In these experiments, the growth rate of Ulva lactuca was found to be 15-20 gdry/m2·d which is estimated to be 10 times greater than that in nature field. Based on these data, we newly designed a float type of efficient Ulva lactuca production system. Fifty kg-dry/d of Ulva lactuca without containing foreign substances such as the sands and 1.9 kg-N/d are expected to be harvested when the float type system (60 m wide × 110 m long × 2 m deep) is used with enriched seawater.

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