Abstract
The carrageenan-producing red algaKappaphycus alvarezii (Doty) Doty was brought to Vietnam from Japan in 1993. Branch fragments of this species were cultivated in a pond, lagoon, inlet and offshore in Vietnam for the first time. The best daily growth rate (DGR) of plants grown in the lagoon area attained 9–11 % day−1 in May to June (cold season). The water temperature and salinity in this area ranged from 27.2–32.4 °C and 31.4–33.7 °C, respectively. DGR of plants grown in the inlet ranged from 7 to 9% day−1 in June. Grazing by fish has been observed to occur in this area. The DGR of plants grown in the pond ranged from 5–6% in January–July, but decreased to less than 4% day−1 in August (hot season).
K. alvarezii in Vietnam showed a carrageenan yield of 18.8–24.6% and gel strength of 1566–1712 g cm−2. These values are similar ones obtained fromK. alvarezii cultivated in the Philippines and Indonesia.
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Ohno, M., Nang, H.Q. & Hirase, S. Cultivation and carrageenan yield and quality ofKappaphycus alvarezii in the waters of Vietnam. J Appl Phycol 8, 431–437 (1996). https://doi.org/10.1007/BF02178588
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DOI: https://doi.org/10.1007/BF02178588