Effect of ammonium on growth and carrageenan content in Kappaphycus alvarezii (Gigartinales,Rhodophyta) |
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Authors: | Rui Li Jiajun Li Chaoyuan Wu |
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Affiliation: | (1) Institute of Oceanology, Academia Sinica, 7 Nan-Hai Road, Qingdao, China |
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Abstract: | Kappaphycus alvarezii, cultured in a region deficient in nitrogen with intermittent application of 10 mM ammonium at three-day intervals for 1 hour, attained a daily growth rate of 4.6%, which was considered to be the optimum growth rate. Under such conditions, the C/N ratio was 29 with a carrageenan content of 58% and gel strength of 45–70 g cm–2. Gel strength of carrageenan was high when nitrogen content was high and vice versa. |
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Keywords: | ammonium effect carrageenan fertilizer application gel strength growth rate Kappaphycus alvarezii seaweed |
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