Synthesis of potato starch sulfate and optimization of the reaction conditions

Cui, Dapeng; Liu, Mingzhu; Wu, Lan; Bi, Yinghui

doi:10.1016/j.ijbiomac.2009.01.003

Cited by 31 publications

(20 citation statements)

References 18 publications

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“…The same volume of distilled water was used as an internal standard. A standard curve was recorded with different concentrations of potassium sulfate (K 2 SO 4 ) instead of a hydrolysis solution with the other agents in the same conditions given previously 30. The DSs of pectin sulfates were determined by comparison with the standard curve and calculated with the following equation according to Lim et al,31 with some modification: where 162 is the molecular weight (g/mol) of GalA, 176 is the molecular weight (g/mol) of galacturonan methyl ester, S % is the sulfur content (%) of pectin sulfate obtained from the calculation of the absorbancy, 32 is the sulfur atom mass (g/mol), and 102 is the SO 3 Na group mass (g/mol).…”

Section: Methodsmentioning

confidence: 99%

Synthesis and anticoagulant activity of pectin sulfates

Fan

Gao

Wang

et al. 2011

J of Applied Polymer Sci

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In this article, we describe the first use of trisulfonated sodium amine as a sulfating reagent for preparing pectin sulfate in aqueous solution. The main reaction parameters that were expected to affect the degree of substitution (DS) were studied. The optimal reaction conditions for the synthesis of pectin sulfate were found to be as follows: the pH of the reaction medium, the reaction temperature, the reaction time, and the ratio of the mole of sodium nitrite (n NaNO2 ) to the mass of pectin (m pectin ) were 6, 60 C, 12 h, and 2.5/190 mol/g, respectively. Pectin and pectin sulfate were characterized by Fourier transform infrared (FTIR) spectroscopy and 13 C-NMR. The FTIR spectra showed the characteristic absorptions of sulfate ester bonds at 1264 and 830 cm À1 . Furthermore, the anticoagulant activity of pectin sulfates with different DSs, concentrations, and molecular weights were investigated with respect to the activated partial thromboplastin time (APTT), thrombin time (TT) and prothombin time. The clotting assay indicated that the pectin sulfate prolonged APTT and TT through inhibition of the activity of antithrombin. These results suggest that the introduction of sulfate groups into the pectin structure improved its anticoagulant activity.

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Section: Methodsmentioning

confidence: 99%

Synthesis and anticoagulant activity of pectin sulfates

Fan

Gao

Wang

et al. 2011

J of Applied Polymer Sci

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“…Ciri keterlarutan dalam air (Gericke et al 2009), biodegradasi dan bioserasi (Xie et al 2009) menyebabkan polisakarida sulfat berpotensi besar untuk digunakan dalam pembasmian kuman (Agarwal et al 2010), sistem penyampaian ubat (Zhu et al 2010), ejen anti-penggumpalan (Wang et al 2007) dan pemekat perubatan (Yang et al 1988), farmaseutik (Gohdes & Mischinick 1998) dan aplikasi bioteknologi (Zhang et al 2011a). Berbanding dengan banyak polisakarida lain, kanji mempunyai sumber asli yang lebih banyak, harga yang lebih rendah dan ciri mesra alam yang lebih baik (Cui et al 2009). …”

Section: Pengenalanunclassified

Sintesis dan Sifat Termal Natrium Kanji Sulfat Dioscorea pentaphylla

Sharlina

Lazim²,

Yaacob³

2017

JSM

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“…Starch derivatives with anionic functional groups, e.g., sulfonate and carboxylic ligands have attracted a lot of attention because of their potentials in the industrial applications such as textile sizing, stabilizing water‐retention agents and also in various biological activities as anti‐coagulant . Commonly anionic starches possess a gelatinization temperature lower than that of native starch which broadens its applications in industrial processes operated at low temperature . Among these applications, anionic starches have been used as a backbone for superabsorbent materials.…”

Section: Introductionmentioning

confidence: 99%

“…Because of the rapid ionization of sulfonate groups, lots of efforts have been done to synthesis starch sulfonate using different sulfonating agents. Typically, sulfuric acid, chlorosulfonic acid, sulfuryl chloride, sulfur trioxide‐pyridine complex, dimethyl formamide–sulfur trioxide, and sulfamic acid have been utilized to prepare such derivative. However, such direct sulfonation methods showed some disadvantages, e.g., uneven distribution of sulfonic groups along the starch chain; uncontrolled degree of substitution and an extreme degradation of starch chains …”

Section: Introductionmentioning

confidence: 99%

Starch Derivatives Bearing Aromatic Sulfonated Functional Groups

et al. 2017

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Starch derivatives with anionic functional groups have attracted a lot of attention because of their potential in the industrial applications. Commonly, anionic starch derivatives possess gelatinization temperatures lower than that of native starch, which is broadening its applications in industrial processes operated at low temperature. Here, new starch derivatives containing sulfonated functional groups are prepared through intermediate triazinyl compounds. Four different bridging compounds are synthesized and characterized via spectral analysis. The sulfonated triazinyl compounds are reacted with native starch to obtain different densities of sulfonic acid groups on the starch backbone. Native starch is reacted with mono/dichlorotriazine‐4‐aminobenzene‐sulfonic acid and mono/dichlorotriazine‐4‐aminobenzene 1,3‐disulfonic acid. The sulfonic acid groups are introduced in different degrees of substitutions (0.043, 0.032, 0.006, and 0.008) which causescharge repulsion along the starch chains and results in keeping chains stretched and therefore less affected by pH and temperature. Ultimately, the produced anionic starch derivatives possess gelatinization temperatures lower than that of native starch.

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Synthesis of potato starch sulfate and optimization of the reaction conditions

Cited by 31 publications

References 18 publications

Synthesis and anticoagulant activity of pectin sulfates

Synthesis and anticoagulant activity of pectin sulfates

Sintesis dan Sifat Termal Natrium Kanji Sulfat Dioscorea pentaphylla

Starch Derivatives Bearing Aromatic Sulfonated Functional Groups

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