Rheological properties and structural characterization of salep improved by ethanol treatment

Kurt, Abdullah; Kahyaoğlu, Talip

doi:10.1016/j.carbpol.2015.07.028

Cited by 36 publications

(15 citation statements)

References 33 publications

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“…The result was another confirmation of coexisting bassorin and tragacanthin in physically. The smoother surface of granules appeared with ethanol treatment which is consistent with the study (Abdullah Kurt & Kahyaoglu, 2015) and responsible for the higher whiteness of BSGT.…”

Section: Sem Analysessupporting

confidence: 79%

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Physicochemical, Rheological and Structural Characteristics of Alcohol Precipitated Fraction of Gum Tragacanth

Kurt¹

2018

Food Health

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Obtaining specific polysaccharide of gum by separating other parts appears to be an approach to get a hydrocolloid with a higher quality and new functional properties. Therefore, gum tragacanth (GT) was used for these aims. The characterization of alcohol precipitated part of GT were performed in terms of physico-chemical compositions (moisture, ash, protein, color and transparency); rheological behaviors aqueous solutions at different concentration, temperature, pH, presence of salt and sucrose; and structural characterization (FTIR, XRD, DSC and SEM). Applied process has no effect on sucrose its chemical compositions which is important for preserving of progressing application. Clearer solution was obtained for purified sample which was important for sensorial properties of end-product. Rheological experiments indicated that separation insoluble part (bassorin) from GT increased viscosity and improved the stability to the different environmental conditions. FTIR experiment results confirmed that tragacanthin and bassorin is physically mixture not chemically bonded. The improvement of thermal stability of GT was also observed by DSC as a result of bassorin separation. The results suggest that extraction soluble part of GT resulted in higher rheological and structural characteristics which may help to widen its application.

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Section: Sem Analysessupporting

confidence: 79%

“…The viscosity increment with purification was observed for GT. Viscosity is the one of the main parameter to evaluate the quality of polymers (Abdullah Kurt & Kahyaoglu, 2015). Intermolecular forces and polymer interactions were responsible for the solution viscosity (A.…”

Section: Steady-shear Flow Behavior Of Gum Tragacanthmentioning

confidence: 99%

Physicochemical, Rheological and Structural Characteristics of Alcohol Precipitated Fraction of Gum Tragacanth

Kurt¹

2018

Food Health

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“…Therefore it could be said that quality of sahlep was preserved when cultivation was applied to SV. The negative correlation between glucomannan and starch was reported by Kurt and Kahyaoglu [9] and Tekinsen and Guner [13]. OS which had the higher GM content exhibited lower starch content.…”

Section: Physicochemical Analysis and Molecular Weightsmentioning

confidence: 85%

“…The broad band between 3500-3000 cm −1 indicated the presence of hydroxyl groups (-OH) due to the moisture and also attributed to the hydroxyl of sugar rings [18]. The peaks in the region 3000-2800 cm −1 is an indicator of C-H stretching [9]. The peak at about 1735 cm −1 which was attributed to the presence of acetyl group [8; 12].…”

Section: Rheological Analysesmentioning

confidence: 99%

“…The carbon (C), hydrogen (H), nitrogen (N) and sulfur (S) contents were calculated. The protein content (%) was calculated by multiplying the nitrogen content (%) by 5.7 [9] The cellulose and lignin contents of samples were determined by the methods proposed by Slavutsky and Bertuzzi [10] using a Fiber Analyzer (ANKOM Technology Fiber Analyzer Model 220, USA). In this method hemicellulose contents were also determined which indicated the glucomannan content of samples.…”

Section: Physicochemical Analysismentioning

confidence: 99%

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The Physicochemical and Structural Characteristics of Cultivated Sahlep

Kurt¹,

Kahyaoğlu²

2017

International Journal of Secondary Metabolite

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Abstract:Sahlep is obtained from tubers of orchids which grown in Mediterranean countries, especially in Turkey. As hydrocolloid, it is used for preparing hot drink and ice cream. However, orchid plants are damaged and sold with high priced. Therefore, searching of alternative production methods of sahlep are in progress. The products of the project, growing possibilities of sahlep orchids at farm conditions (cultivation) were researched in this study. The naturally grown sahlep which belongs to Serapias vomeracea and Orchis sancta species compared with that of cultivated products. Physicochemical and structural characterization analyses were performed for the samples. The tubers were obtained from Serapias vomeracea exhibited higher similarity in physicochemical properties with naturally grown one than Orchis sancta. Samples have Newtonian flow behavior. FTIR experiments which provide knowledge about chemicals bonds in structure revealed that cultivation studies have no effect on sahlep chemical structure. Amorph structure was determined with the XRD experiment for all samples. The variation of surface morphology of sahlep was observed with the cultivation by SEM. DSC and TGA analysis exhibited that samples had similar thermal stabilities. The results obtained showed that sahlep with the same physicochemical and structural characteristics with naturally grown could be achieved by cultivation. The development and widening in this production method provides both protection of wild orchids and cheaper sahlep production.

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Salep Glucomannan: Properties and Applications

Kurt

2021

Polysaccharides

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Rheological properties and structural characterization of salep improved by ethanol treatment

Cited by 36 publications

References 33 publications

Physicochemical, Rheological and Structural Characteristics of Alcohol Precipitated Fraction of Gum Tragacanth

Physicochemical, Rheological and Structural Characteristics of Alcohol Precipitated Fraction of Gum Tragacanth

The Physicochemical and Structural Characteristics of Cultivated Sahlep

Salep Glucomannan: Properties and Applications

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