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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Rui, L., Jiajun, L. & Chaoyuan, W. Effect of ammonium on growth and carrageenan content in Kappaphycus alvarezii (Gigartinales, Rhodophyta). Hydrobiologia 204, 499–503 (1990). https://doi.org/10.1007/BF00040277
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DOI: https://doi.org/10.1007/BF00040277