Effects of Hypochlorous Acid, Calcium Chloride and Phosphoric Acid in a Highly Saline Solution on Cell Death Rate and Growth Rate of Porphyra yezoensis and Ulva intestinalis

We investigated the effects of a highly saline solution (HS) containing hypochlorous acid, calcium chloride ($CaCl_2$), and phosphoric acid ($H_3PO_4$) on cell death and growth rate of laver Porphyra yezoensis and green laver Ulva intestinalis. Cell death rates of laver treated with HS and HS plus hypochlorous acid (HS + HOCl) in the harvesting stage were less than 0.5%, and there were no significant differences between the HS and HS + HOCl treatments. However, cell death of green laver treated with HS + HOCl in the harvesting stage was greater than 81.2%. These results indicate that the addition of HOCl is highly effective to eradicate noxious green laver without causing damage to laver. The addition of HOCl and $H_3PO_4$ to HS did not increase the area or weight of laver blades. A combination treatment of $CaCl_2$ and HS, however, significantly increased the area and weight of laver lades compared to controls (P<0.05).

고염수 처리제에 차아염소산, 염화칼슘 및 인산 첨가가 방사무늬김(Pyropia yezoensis)과 창자파래(Ulva intestinalis)의 사세포율과 엽체 성장에 미치는 영향