The farmed Eucheuma species (Gigartinales, Rhodophyta) in Danajon Reef, Philippines: carrageenan properties

Azanza-Corrales, R.; Sa-a, P.

doi:10.1007/978-94-009-2049-1_74

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…The sulfate content from field‐cultured K. alvarezii in this study was lower than the specification as observed similarly by Normah and Nazarifah (). Although high sulfate content was reported to associate with weak gels in other species (Marinho‐Soriano ), several studies reported no significant or inverse relationship observed between sulfate content and gel strength for K. alvarezii (Azanza‐Corrales & Sa‐a ; Hurtado‐Ponce ).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of growth rate and semi‐refined carrageenan properties of tissue‐cultured Kappaphycus alvarezii (Rhodophyta, Gigartinales)

Yong

Chin

Thien

et al. 2014

Phycological Research

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This study aimed to evaluate and compare the quality of κ-carrageenan obtained from tissue-cultured and fieldcultured Kappaphycus alvarezii. Carrageenan properties including yield, viscosity, gel strength and sulfate content were studied. After 60 days of cultivation, tissue-cultured K. alvarezii showed a higher growth rate (6.3 ± 0.01% day −1 ) than field-cultured seedlings (3.4 ± 0.3% day −1 ). The obtained carrageenan yield from tissue-cultured (67.3 ± 16.4%) was higher than field-cultured K. alvarezii (51.5 ± 21.0%). Gel viscosity of carrageenans from tissue-cultured K. alvarezii (1280.0 ± 25.0 cP) was found significantly higher than field-cultured samples (87.8 ± 20.9 cP). The 1.5% gel solution of tissue-cultured and field-cultured K. alvarezii exhibited gel strengths of 703.5 ± 14.1 and 288.3 ± 19.3 g cm −2 , respectively. The average sulfate content of carrageenans was found to be significantly different between tissue-cultured and fieldcultured K. alvarezii with 34.2 ± 10.9 and 7.5 ± 6.7%, respectively. Tissue culture is recommended to produce high quality seedlings by providing optimized culture conditions to the seaweed. This approach can serve as an alternative way to solve the seedling shortage problems currently faced by the seaweed industry.

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Section: Resultsmentioning

confidence: 99%

Evaluation of growth rate and semi‐refined carrageenan properties of tissue‐cultured Kappaphycus alvarezii (Rhodophyta, Gigartinales)

Yong

Chin

Thien

et al. 2014

Phycological Research

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“…K. alvarezii was firstly reported to be cultivated in the Philippines back in 1970 [5]. Then in the year 1985, with the increasing global demand for carrageenan, the cultivation of K. alvarezii made a debut in Indonesia [6].…”

Section: Introductionmentioning

confidence: 99%

PRODUCTION OF CARRAGEENAN BY DIFFERENT STRAINS OF Kappaphycus alvarezii CULTIVATED IN SERANG, INDONESIA

Zakaria¹,

Rahman²,

Rahmani³

et al. 2019

IIUMEJ

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Kappaphycus alvarezii is one of the main seaweeds cultivated in Indonesia. Its use as a raw material for the kappa-carrageenan industry has increased its cultivation activities. However, standard cultivation protocol for Kappaphycus alvarezii has yet to be well-documented, particularly on strain selection for kappa-carrageenan production. There are various strains of Kappaphycus alvarezii grown in Indonesia, specifically in Serang, Banten such as green, red, and yellowish green strains. In this study, growth rate, carrageenan yield, and gel strength from different strains of Kappaphycus alvarezii were investigated. It was observed that the specific growth rate of green type (4.14% /day) differed significantly from the other two types (red; 3.41% /day and yellowish green; 3.47% /day). The red type had the highest yield of carrageenan (45.16%) followed by yellowish green (36.66%) and green strain (33.67%). Gel strength was not significantly affected by the strain variations where the observed values for yellowish green, green, and red strain were 344.46, 316.91 and 313.10 g/cm2, respectively. Green Kappaphycus alvarezii had the highest biomass (0.27 g/cm/d) and carrageenan productivity (0.012 g/cm/d). It can be concluded that the green strain of Kappaphycus alvarezii is the most suitable for cultivation in Serang, particularly for the kappa-carrageenan industry. ABSTRAK: Kappaphycus alvarezii adalah sebahagian daripada rumpai air yang dituai di Indonesia. Penggunaannya sebagai bahan dasar kepada industri kappa-carrageenan telah menambah kepada aktiviti penuaian. Walau bagaimanapun, protokol penuaian biasa bagi Kappaphycus alvarezii adalah tertakluk pada dokumentasi penuh terutama dalam pemilihan strain pada penghasilan kappa-carrageenan. Terdapat pelbagai jenis strain Kappaphycus alvarezii yang tumbuh di Indonesia, terutama di Serang, Banten seperti hijau, merah, dan strain hijau kekuningan. Kajian ini, kadar pertumbuhan, hasil karaginan dan kekuatan gel daripada pelbagai strain Kappaphycus alvarezii telah dikaji. Didapati bahawa kadar pertumbuhan tertentu pada jenis hijau (4.14% /hari) berbeza ketara berbanding dari dua jenis lain (merah; 3.41% /hari dan hijau kekuningan; 3.47% /hari). Jenis merah mempunyai hasil karaginan tertinggi (45.16%) diikuti oleh hijau kekuningan (36.66%) dan strain hijau (33.67%). Kekuatan gel adalah tidak ketara mempengaruhi kepelbagaian variasi di mana nilai yang dipantau pada strain hijau kekuningan, hijau dan merah adalah 344.46, 316.91 dan 313.10 g/cm2, masing-masing. Kappaphycus alvarezii hijau mempunyai biojisim tertinggi (0.27 g/cm/d) dan penghasilan karaginan (0.012 g/cm/d). Kesimpulannya strain hijau Kappaphycus alvarezii adalah lebih sesuai untuk disemai di Serang terutamanya pada industri kappa-karaginan.

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“…Para K. alvarezii, apresentou teor de sulfato de 24% e de 29% para 3,6 anidrogalactose, enquanto Azanza-Corrales & Sa-a (1990) apresentaram conteúdos de sulfato que variaram de 27,71% a 36,52% para a linhagem verde e de 28,99% a 36,52% para a linhagem marrom.…”

Section: Introductionunclassified

“…Os dados de força de gel são ainda mais variáveis, entre 1 a 1158 g/cm 2 (Dawes et al 1977, Rui et al 1990, Azanza-Corrales & Sa-a 1990, Hurtado-Ponce 1995, 1996. Essa variação decorre principalmente do tipo de equipamento utilizado nas medições, do modo de preparo do gel para as análises (que pode ser na concentração de 1,5% ou 2,0%), pelo acréscimo ou não de KCl 0,2% para a gelificação da carragenana, e pelo emprego ou não de tratamento alcalino previamente à extração.…”

Section: Introductionunclassified

Extração, teor e propriedades de carragenana de Kappaphycus alvarezii (Doty) Doty ex P. Silva, em cultivo experimental em Ubatuba, SP.

Hayashi¹

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The farmed Eucheuma species (Gigartinales, Rhodophyta) in Danajon Reef, Philippines: carrageenan properties

Cited by 3 publications

References 5 publications

Evaluation of growth rate and semi‐refined carrageenan properties of tissue‐cultured Kappaphycus alvarezii (Rhodophyta, Gigartinales)

Evaluation of growth rate and semi‐refined carrageenan properties of tissue‐cultured Kappaphycus alvarezii (Rhodophyta, Gigartinales)

PRODUCTION OF CARRAGEENAN BY DIFFERENT STRAINS OF Kappaphycus alvarezii CULTIVATED IN SERANG, INDONESIA

Extração, teor e propriedades de carragenana de Kappaphycus alvarezii (Doty) Doty ex P. Silva, em cultivo experimental em Ubatuba, SP.

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