Volumetric Properties of Sodium Cyclamate Solutions in Presence of Glucose and Sucrose

International Letters of Chemistry, Physics and Astronomy Pub Date : 2017-08-01 DOI:10.18052/WWW.SCIPRESS.COM/ILCPA.75.37

Sanjeevan J. Kharat, S. M. Munde

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Abstract

Densities of sodium cyclamate (Na-cycl) in water and (0.1, 0.3, and 0.5) m (glucose/sucrose) have been measured at (298.15, 303.15, 308.15, and 313.15) K. From density values, partial molar volumes (V0Φ), expansion coefficient (E∞), Hepler’s constant (δ2V0Φ/δT2)p, apparent specific volumes (ASV), partial molar volumes of transfer (∆trsV0Φ), doublet (VAB) and triplet (VABB) interaction coefficients have been calculated. An increase in the values of V0Φ and ∆trsV0Φ was observed with increase in the concentration of glucose/sucrose. The positive values of E∞ and V0Φ are due to the strong solute-solvent interactions. The positive values of (δ2V0Φ/δT2)p suggest structure making behaviour of sodium cyclamate in water and in presence of glucose and sucrose. The positive values of (∆trsV0Φ) and VAB may be due to the interactions between hydrophilic group (–OH, C=O, and –O–) of glucose/sucrose and sodium ion of sodium cyclamate. All solutions studied exhibit sweet taste because ASV of all solutions ranges from (0.569 × 10-6) m3×kg-1 to (0.626 × 10-6) m3×kg-1.

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葡萄糖和蔗糖存在下甜蜜素钠溶液的体积性质

在(298.15,303.15,308.15和313.15)k下测量了环氨基磺酸钠(Na-cycl)在水中和(0.1,0.3和0.5)m(葡萄糖/蔗糖)中的密度。根据密度值，计算了偏摩尔体积(V0Φ)，膨胀系数(E∞)，Hepler常数(δ2V0Φ/δT2)p，表观比容(ASV)，转移偏摩尔体积(∆trsV0Φ)，双重态(VAB)和三重态(VABB)相互作用系数。随着葡萄糖/蔗糖浓度的增加，V0Φ和∆trsV0Φ的值也随之增加。E∞和V0Φ的正值是由于强溶质-溶剂相互作用所致。(δ2V0Φ/δT2)p的正值表明环磺酸钠在水中和葡萄糖和蔗糖存在下的造结构行为。(∆trsV0Φ)和VAB的正值可能是由于葡萄糖/蔗糖的亲水性基团(- oh, C=O和- O -)与甜蜜素钠的钠离子相互作用所致。所有溶液的ASV值范围为(0.569 × 10-6) m3×kg-1 ~ (0.626 × 10-6) m3×kg-1。

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International Letters of Chemistry, Physics and Astronomy

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