Cultivation and utilisation of red seaweeds in the Western Indian Ocean (WIO) Region

Msuya, Flower E.; Buriyo, Amelia S.; Omar, Isabel; Pascal, Benjamin; Narrain, Koushul; Ravina, Joseph J. M.; M'rabu, E.; Wakibia, Joseph

doi:10.1007/s10811-013-0086-4

Cited by 71 publications

(30 citation statements)

References 9 publications

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“…This approach has been triggered by poor production of seaweeds cultivated in shallow water environments associated with perennial infestation by 'ice-ice' syndrome (white and soft thallus), epiphytes, and herbivory. These challenges have been mostly observed in seasons characterized by high water temperature (Msuya et al, 2014). As a result high disparity in production between regions due to diversification of culture techniques has been demonstrated (Buschmann et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…The deep water culture techniques require sophisticated materials such as motorised boats to access the farms in relatively deeper, stable and productive environments, as opposed to shallow water cultivation where farmers with low economic power access farms through walking at low tides. Although production statistics from other seaweed cultivating countries in Africa are scarce, limited production of carrageenophytes in the WIO region exists (Msuya et al, 2014). The latest report has revealed that even with the diversification of culture techniques in developed countries, the present sources of cultivated eucheumoids have not met the volume demands of the existing seaweed processing industry (Buschmann et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have shown that relocation of seaweed farms from shallow water to deeper water environments reduced the risk of 'ice-ice' syndrome on these seaweeds thus improving their growth rate and biomass (Msuya et al, 2014). However, the studies have not focused on identifying the best culture technique for adoption in deep water environments.…”

Section: Introductionmentioning

confidence: 99%

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Growth rates of Eucheuma denticulatum and Kappaphycus alvarezii (Rhodophyta; Gigartinales) cultured using modified off-bottom and floating raft techniques on the Kenyan coast

Kimathi

Wakibia

Gichua

2018

West Ind. Oc. J Mar. Sci.

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Aims and scope: The Western Indian Ocean Journal of Marine Science provides an avenue for the wide dissemination of high quality research generated in the Western Indian Ocean (WIO) region, in particular on the sustainable use of coastal and marine resources. This is central to the goal of supporting and promoting sustainable coastal development in the region, as well as contributing to the global base of marine science. The journal publishes original research articles dealing with all aspects of marine science and coastal management. Topics include, but are not limited to: theoretical studies, oceanography, marine biology and ecology, fisheries, recovery and restoration processes, legal and institutional frameworks, and interactions/relationships between humans and the coastal and marine environment. In addition, Western Indian Ocean Journal of Marine Science features state-of-the-art review articles and short communications. The journal will, from time to time, consist of special issues on major events or important thematic issues.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Growth rates of Eucheuma denticulatum and Kappaphycus alvarezii (Rhodophyta; Gigartinales) cultured using modified off-bottom and floating raft techniques on the Kenyan coast

Kimathi

Wakibia

Gichua

2018

West Ind. Oc. J Mar. Sci.

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“…It is easily accessible, in huge amounts, for food and pharmaceutical applications. It is cultured in Indonesia, Malaysia, Philippines, Vietnam and several other tropical countries for domestic industries and export (Hurtado et al 2014;Msuya et al 2014). In Malaysia, the cultivation of K. alvarezii was conducted in Semporna (eastern coast of Malaysia), where the total production is about 1800 t year −1 (dry weight) (Prud'Homme van Reine and Trono 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of different drying techniques on the phytochemical content and antioxidant activity of Kappaphycus alvarezii

et al. 2014

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The effect of different drying techniques on the phytochemical content and antioxidant activity of Kappaphycus alvarezii ('crocodile' morphotype) were investigated. Phytochemical (total phenolic, flavonoid, anthocyanin and carotenoid content) and antioxidant activity of the seaweed were determined. The seaweed was dried using seven types of drying techniques; oven drying (temperature of 40°C), oven drying (temperature of 80°C), sun drying, hang drying, sauna drying, shade drying and freeze drying. There were significant differences in the phytochemical content and antioxidant activity between the dried seaweed samples. The total phenolic content of the dried samples were in the range of 26.11 to 53.33 mg gallic acid equivalent (GAE) per 100 g, total flavonoid content from 9.83 to 25.67 mg catechin equivalent (CE) per 100 g, total anthocyanin content from 0.05 to 0.11 mg cyanidin-3-glucoside equivalent (C-3-GE) per gramme and total carotenoid content from 0.03 to 0.24 mg β-carotene equivalent (BCE) per gram, respectively. The oven-dried (40 and 80°C) and shade-dried samples contained the highest values of phytochemical content as compared to other dried samples tested. Antioxidant activity were determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2-azino-bis-(3-ethyl-benzothiazoline-6-sulphonic acid) (ABTS) and ferric reducing/antioxidant power (FRAP) assays. The oven-dried (40 and 80°C) and shade-dried samples also displayed stronger scavenging activity and reducing ability as compared to other dried samples tested. The lower values of phytochemical content and weak antioxidant activity were detected in sun-dried and sauna-dried samples. This finding suggested that different drying techniques greatly influence the occurrence of phytochemical content and antioxidant activity in seaweeds.

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“…Among the various seaweeds cultivated (e.g., Porphyra/ Pyropia, Laminaria/Saccharina, Macrocystis, Gracilaria, Undaria, and Eucheuma), Kappaphycus alvarezii, a tropical red seaweed, is of enormous economic importance (Thirumaran and Anantharaman 2009;Msuya et al 2014). It has a global industrial demand for its cell wall polysaccharide, carrageenan (a family of linear sulfated polysaccharides), which is utilized as a gelling, viscosity-enhancing, texturemodifying, and cell-immobilizing agent in various food, pharmaceutical, industrial, and biotechnological applications (Bixler 1996;Ask and Azanza 2002;Villanueva et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Seasonal studies on field cultivation of Kappaphycus alvarezii (Doty) Doty on the northwest coast of India

et al. 2015

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Cultivation of Kappaphycus alvarezii was carried out at Okha, northwest coast of India, from August 2004 to April 2006, using the raft and net bag methods. Seawater temperature, salinity, nitrate, and phosphate varied seasonally, with average values of 26.51±1.72°C, 34.23±1.79‰, 17.46±8.77 μM L −1 , and 1.32±0.78 μM L −1 , respectively. After 15, 30, and 45 days of growth, average daily growth rates (DGRs) were 6.87±0.27, 5.99±0.18, and 4.97±0.08 % with corresponding biomass of 292.43 ± 12.06, 629.58± 32.56, and 977.98 ± 36.59 g FW plant −1 , respectively, for the raft cultivation. In the net bag method, after 15, 30, and 45 days of growth, the mean DGRs were 7.88±0.38, 5.83±0.10, and 4.42±0.14 % with biomass values of 348.98±19.48, 623.28±29.95, and 813.73±52.64 g FW plant −1 , respectively. This study confirmed the feasibility of cultivating K. alvarezii on the northwest coast of India.

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Cultivation and utilisation of red seaweeds in the Western Indian Ocean (WIO) Region

Cited by 71 publications

References 9 publications

Growth rates of Eucheuma denticulatum and Kappaphycus alvarezii (Rhodophyta; Gigartinales) cultured using modified off-bottom and floating raft techniques on the Kenyan coast

Growth rates of Eucheuma denticulatum and Kappaphycus alvarezii (Rhodophyta; Gigartinales) cultured using modified off-bottom and floating raft techniques on the Kenyan coast

Effect of different drying techniques on the phytochemical content and antioxidant activity of Kappaphycus alvarezii

Seasonal studies on field cultivation of Kappaphycus alvarezii (Doty) Doty on the northwest coast of India

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