Rheological properties of agar from Gracilariopsis heteroclada (Zhang et Xia) Zhang et Xia (Gracilariales, Rhodophyta) treated with powdered commercial lime and aqueous alkaline solution
dc.contributor.author | Hurtado-Ponce, A. Q. | |
dc.date.accessioned | 2013-02-01T08:51:50Z | |
dc.date.available | 2013-02-01T08:51:50Z | |
dc.date.issued | 1992 | |
dc.identifier.citation | Hurtado-Ponce, A. Q. (1992). Rheological properties of agar from Gracilariopsis heteroclada (Zhang et Xia) Zhang et Xia (Gracilariales, Rhodophyta) treated with powdered commercial lime and aqueous alkaline solution. Botanica marina, 35(5), 365-369. | en |
dc.identifier.issn | 0006-8055 | |
dc.identifier.uri | http://hdl.handle.net/10862/1381 | |
dc.description.abstract | Rheological properties were measured for 1.5% agar gels from Gracilariopsis heteroclada pre-treated with powdered commercial lime (CaCO3) during sun drying, and a combination of two alkaline solutions during water-bath heating in the laboratory. All samples were subjected to a one or three hours of heating prior to extraction. Slightly higher agar yield were obtained from samples treated with lime while drying (2.9-4.5%) than from seaweed (2.1-3.8%) treated with alkaline solutions in the laboratory. Better rheological (breaking strength,cohesiveness, breaking energy, and rigidity) and physical properties (dynamic gelling and melting temperatures) were obtained from laboratory treated seaweed after a 3-hour treatment. No effect of collection site, alkali treatment and treatment time on the yield of agar, was observed. However, significant (P ≤ 0.01) effects were recorded for collection site, alkali treatment and treatment time both on rheological properties and on gelling and melting temperatures. | en |
dc.language.iso | en | en |
dc.publisher | Walter de Gruyter | en |
dc.subject | Rhodophyta | en |
dc.title | Rheological properties of agar from Gracilariopsis heteroclada (Zhang et Xia) Zhang et Xia (Gracilariales, Rhodophyta) treated with powdered commercial lime and aqueous alkaline solution | en |
dc.type | Article | en |
dc.identifier.doi | 10.1515/botm.1992.35.5.365 | |
dc.citation.volume | 35 | |
dc.citation.issue | 5 | |
dc.citation.spage | 365 | |
dc.citation.epage | 369 | |
dc.citation.journalTitle | Botanica Marina | en |
seafdecaqd.library.callnumber | VF SJ 0377 | |
seafdecaqd.databank.controlnumber | 1992-39 | |
dc.subject.asfa | agar | en |
dc.subject.asfa | gels | en |
dc.subject.asfa | physical properties | en |
dc.subject.asfa | rheology | en |
dc.subject.asfa | seaweed products | en |
dc.subject.asfa | seaweeds | en |
dc.subject.scientificName | Gracilariopsis heteroclada |
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