Growth, Agar Yield and Quality of Selected Agarophyte Species from the Philippines

Arano, Kathryn G.; Trono, Gavino C.; Montaño, N. E.; Hurtado, Anicia Q.; Villanueva, Ronald D.

doi:10.1515/bot.2000.051

Cited by 21 publications

(11 citation statements)

References 31 publications

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“…The agar content of G. tenuistipitata and Gp. bailiniae in this study was higher than some previous reports for these species (Pondevida and Hurtado-Ponce 1996;Araño et al 2000), but similar to the results reported by de Castro (1996) for Gp. heteroclada Zhang et Xia (= Gp.…”

Section: Discussionsupporting

confidence: 92%

Comparison of three gracilarioids: growth rate, agar content and quality

Скрипцова

Nabivailo

2008

J Appl Phycol

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Three gracilarioid species, Gracilariopsis bailiniae and Gracilaria tenuistipitata from Vietnam and Gracilaria gracilis from Russia, were studied in order to determine whether Gracilaria gracilis might be a superior species for cultivation in brackish-water ponds for agar production compared with the Vietnamese species. The effects of different salinity levels on the growth rate and agar production as well as agar properties of three gracilarioid species were compared in controlled laboratory experiments. Gracilaria tenuistipitata and G. gracilis were tolerant to low salinity (∼10‰), whereas Gp. bailiniae died under these conditions. G. tenuistipitata showed superior growth among the three species examined. Gracilaria gracilis had the highest agar content [36.8-46.6% dry weight (dw)]. Agar yield from Vietnamese gracilarioids did not exceed 30% dw. Gel strength of native agar from Gracilaria gracilis was two-fold higher that from Vietnamese species (278 g cm −2 vs 130 g cm −2 ). Alkali pretreatment increased gel strength significantly for Gracilaria gracilis (1.4-fold), and G. tenuistipitata and Gp. bailiniae (2.3-fold) compared with native agar. The results suggest that Gracilaria gracilis may be a suitable species for production of reasonably good quality agar.

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Section: Discussionsupporting

confidence: 92%

Comparison of three gracilarioids: growth rate, agar content and quality

Скрипцова

Nabivailo

2008

J Appl Phycol

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“…Effects of seaweed-water ratio during agar extraction process on agar properties has not been published for any Gracilaria species but different researchers over years have used different ratios for agar extraction (Araño, Trono, Montaño, Hurtado, & Villanueva, 2000;Arvizu-Higuera et al, 2008;Freile-Pelegrin & Murano, 2005;Orduña-Rojas et al, 2008;Tako et al, 1999). Agar yield and gel strength were significantly different with different volumes of water for same amount of G. cliftonii.…”

Section: Agar Extraction Variablesmentioning

confidence: 99%

Agar extraction process for Gracilaria cliftonii (Withell, Millar, & Kraft, 1994)

Kumar

Fotedar

2009

Carbohydrate Polymers

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“…The observed increase in gel strength corresponding to nitrogen enrichment in K. striatum and Kappaphycus sp., although slight, is consonant with the improvement in phycocolloid quality (e.g., gel strength) in algae which were grown in nitrogen rich waters (DeBoer 1979;Bird et al 1981;Martinez and Buschmann 1996;Araño et al 2000).…”

Section: Discussionmentioning

confidence: 85%

Bioremediation potential of three carrageenophytes cultivated in tanks with seawater from fish farms

Rodrigueza

Montaño

2007

J Appl Phycol

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Intensive fish farming discharges large amount of nutrients, the majority of which are composed of dissolved nitrogen in ammonium form, which promotes eutrophication in coastal waters. Macroalgae have been proven to effectively reduce the nutrients of fish farm effluents and at the same time increase the economic output of the aquaculture system when economically important species are utilized. In this study, the potential of three high value carrageenophytes (Kappaphycus alvarezii, Kappaphycus sp., K. striatum) to extract ammonium in fish farm effluent collected from a milkfish (Chanos chanos) fish cage was investigated. To establish economic viability of the integrated culture system, the effects of elevated total ammonia of fish farm effluent on the growth rate, phycocolloid content, and quality of these seaweeds were determined. Tank cultivation trials showed that the three carrageenophytes substantially reduced the ammonium content of the fish farm effluent (41-66% reduction efficiency) and consequently attained maximum daily growth rates of 4.41%, 2.90%, and 2.75% for K. striatum, Kappaphycus sp., and K. alvarezii, respectively. Their carrageenan content was improved. Carrageenan quality, however, was not significantly enhanced. Elevated ammonium in fish farm effluent did not adversely affect the performance of tank cultivated Kappaphycus; thus, future integration of these seaweeds in fish farms is feasible.

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Growth, Agar Yield and Quality of Selected Agarophyte Species from the Philippines

Cited by 21 publications

References 31 publications

Comparison of three gracilarioids: growth rate, agar content and quality

Comparison of three gracilarioids: growth rate, agar content and quality

Agar extraction process for Gracilaria cliftonii (Withell, Millar, & Kraft, 1994)

Bioremediation potential of three carrageenophytes cultivated in tanks with seawater from fish farms

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