Rheological properties of thermally xyloglucan gel from the seeds of Hymenaea courbaril

Busato, Ana Paula; Reicher, Fany; Domingues, Rafael; Silveira, Joana Léa Meira

doi:10.1016/j.msec.2008.08.005

Cited by 17 publications

(9 citation statements)

References 31 publications

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“…6B) are similar to the behavior observed for others native xyloglucan solutions [23,41,45,46]. For the two concentrations tested, G was higher than G for low frequencies, indicating that the system has a liquid behavior who dissipates most of the energy externally applied.…”

Section: Rheological Analysessupporting

confidence: 79%

“…This type of behavior is expected for most polymer solutions and was already observed for other polysaccharides composed essentially of glucose, xylose and galactose [23,40].…”

Section: Rheological Analysessupporting

confidence: 67%

“…We believe that our methodology allowed us to achieve a high yield which is far above those of previous works, such as 15.5% [23] and 38% [5]. Different extraction times for xyloglucan were compared and demonstrated a variation of yield from 5.4 to 40.8% [25].…”

Section: Extraction and Yieldmentioning

confidence: 80%

“…Most methods for extraction of xyloglucan from seeds described in the literature consist of two basic stages, where the triturated seeds pass by aqueous extraction, followed by purification using alcoholic precipitation [8,23,24].…”

Section: Extraction and Yieldmentioning

confidence: 99%

“…Most part of the rheological characterization of xyloglucans from different sources investigates flow properties of this polysaccharide by mixing with other components [37][38][39] or chemical modification [23,24,40].…”

Section: Rheological Analysesmentioning

confidence: 99%

See 4 more Smart Citations

Structure and rheological properties of a xyloglucan extracted from Hymenaea courbaril var. courbaril seeds

Arruda

Albuquerque

Santos

et al. 2015

International Journal of Biological Macromolecules

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Hymenaea courbaril var courbaril seed xyloglucan was efficiently extracted with 0.1M NaCl, followed by ethanol precipitation (yield=72±5% w/w). Its amorphous structure was identified by the pattern of X-ray diffraction. The monosaccharide composition was determined by GC/MS analysis of the alditol acetates and showed the occurrence of glucose:xylose:galactose:arabinose (40:34:20:6). One-(1D) and two-dimensional-(2D) NMR spectra confirmed a central backbone composed by 4-linked β-glucose units partially branched at position 6 with non-reducing terminal units of α-xylose or β-galactose-(1→2)-α-xylose disaccharides. The xyloglucan solution was evaluated by dynamic light scattering and presents a polydisperse and practically neutral profile, and at 0.5 and 1.0% (w/v) the solutions behave as a viscoelastic fluid. The polysaccharide did not show significant antibacterial or hemolytic activities. Overall our results indicate that xyloglucan from H. courbaril is a promising polysaccharide for food and pharmaceutical industries.

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Section: Rheological Analysessupporting

confidence: 79%

“…This type of behavior is expected for most polymer solutions and was already observed for other polysaccharides composed essentially of glucose, xylose and galactose [23,40].…”

Section: Rheological Analysessupporting

confidence: 67%