Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures

Tim Weston; Linh T. T. Vu; Jim Hourigan; Rosalie J. Durham; Robert W. Sleigh

Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures

Tim Weston, Linh T. T. Vu, Jim Hourigan, Rosalie J. Durham, Robert W. Sleigh

School of Science

Research output: Chapter in Book / Conference Paper › Conference Paper

Abstract

Recovery of Î² or Î±-lactose and its downstream processing require information about solubility data. Solubilities of lactose in various compositions of ethanol and water were measured gravimetrically. The solubility increased as the temperature increased but decreased with increasing ethanol percentage. The solubility was inversely fitted in a 4th polynomial model with increasing ethanol weight percentage. The simultaneous effects of temperature (T) and ethanol (E) on lactose solubility (Cs) could be expressed in a plane multiple regression of Cs = 11.85 - 0.29E + 0.25T, R2 = 0.80. The ratios of Î²/Î±-lactose at equilibrium were measured with Gas Chromatography (GC) and polarimeter and they ranged from 0.08 to 1.37. In ethanol free solutions the ratio of Î²/Î±- lactose increased with the rising temperature.

Original language	English
Title of host publication	Chemeca 2004: Sustainable Processes - Proceedings of the 32nd Australasian Chemical Engineering Conference, held in Sydney, N.S.W., 26-29 September, 2004
Publisher	Curran Associates
Number of pages	1
ISBN (Print)	1877040126
Publication status	Published - 2007
Event	Australasian Chemical Engineering Conference - Duration: 28 Sept 2008 → …

Conference

Conference	Australasian Chemical Engineering Conference
Period	28/09/08 → …

Keywords

lactose
solubility
ethanol
water
temperature

Cite this

@inproceedings{d4b9a73227e04488b82c66471ae00d41,

title = "Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures",

abstract = "Recovery of {\^I}² or {\^I}±-lactose and its downstream processing require information about solubility data. Solubilities of lactose in various compositions of ethanol and water were measured gravimetrically. The solubility increased as the temperature increased but decreased with increasing ethanol percentage. The solubility was inversely fitted in a 4th polynomial model with increasing ethanol weight percentage. The simultaneous effects of temperature (T) and ethanol (E) on lactose solubility (Cs) could be expressed in a plane multiple regression of Cs = 11.85 - 0.29E + 0.25T, R2 = 0.80. The ratios of {\^I}²/{\^I}±-lactose at equilibrium were measured with Gas Chromatography (GC) and polarimeter and they ranged from 0.08 to 1.37. In ethanol free solutions the ratio of {\^I}²/{\^I}±- lactose increased with the rising temperature.",

keywords = "lactose, solubility, ethanol, water, temperature",

author = "Tim Weston and Vu, {Linh T. T.} and Jim Hourigan and Durham, {Rosalie J.} and Sleigh, {Robert W.}",

year = "2007",

language = "English",

isbn = "1877040126",

booktitle = "Chemeca 2004: Sustainable Processes - Proceedings of the 32nd Australasian Chemical Engineering Conference, held in Sydney, N.S.W., 26-29 September, 2004",

publisher = "Curran Associates",

note = "Australasian Chemical Engineering Conference ; Conference date: 28-09-2008",

}

Weston, T, Vu, LTT, Hourigan, J, Durham, RJ & Sleigh, RW 2007, Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures. in Chemeca 2004: Sustainable Processes - Proceedings of the 32nd Australasian Chemical Engineering Conference, held in Sydney, N.S.W., 26-29 September, 2004. Curran Associates, Australasian Chemical Engineering Conference, 28/09/08.

Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures. / Weston, Tim; Vu, Linh T. T.; Hourigan, Jim et al.
Chemeca 2004: Sustainable Processes - Proceedings of the 32nd Australasian Chemical Engineering Conference, held in Sydney, N.S.W., 26-29 September, 2004. Curran Associates, 2007.

Research output: Chapter in Book / Conference Paper › Conference Paper

TY - GEN

T1 - Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures

AU - Weston, Tim

AU - Vu, Linh T. T.

AU - Hourigan, Jim

AU - Durham, Rosalie J.

AU - Sleigh, Robert W.

PY - 2007

Y1 - 2007

N2 - Recovery of Î² or Î±-lactose and its downstream processing require information about solubility data. Solubilities of lactose in various compositions of ethanol and water were measured gravimetrically. The solubility increased as the temperature increased but decreased with increasing ethanol percentage. The solubility was inversely fitted in a 4th polynomial model with increasing ethanol weight percentage. The simultaneous effects of temperature (T) and ethanol (E) on lactose solubility (Cs) could be expressed in a plane multiple regression of Cs = 11.85 - 0.29E + 0.25T, R2 = 0.80. The ratios of Î²/Î±-lactose at equilibrium were measured with Gas Chromatography (GC) and polarimeter and they ranged from 0.08 to 1.37. In ethanol free solutions the ratio of Î²/Î±- lactose increased with the rising temperature.

AB - Recovery of Î² or Î±-lactose and its downstream processing require information about solubility data. Solubilities of lactose in various compositions of ethanol and water were measured gravimetrically. The solubility increased as the temperature increased but decreased with increasing ethanol percentage. The solubility was inversely fitted in a 4th polynomial model with increasing ethanol weight percentage. The simultaneous effects of temperature (T) and ethanol (E) on lactose solubility (Cs) could be expressed in a plane multiple regression of Cs = 11.85 - 0.29E + 0.25T, R2 = 0.80. The ratios of Î²/Î±-lactose at equilibrium were measured with Gas Chromatography (GC) and polarimeter and they ranged from 0.08 to 1.37. In ethanol free solutions the ratio of Î²/Î±- lactose increased with the rising temperature.

KW - lactose

KW - solubility

KW - ethanol

KW - water

KW - temperature

UR - http://handle.uws.edu.au:8081/1959.7/44658

M3 - Conference Paper

SN - 1877040126

BT - Chemeca 2004: Sustainable Processes - Proceedings of the 32nd Australasian Chemical Engineering Conference, held in Sydney, N.S.W., 26-29 September, 2004

PB - Curran Associates

T2 - Australasian Chemical Engineering Conference

Y2 - 28 September 2008

ER -

Study of solubility and mutarotation equilibrium of lactose in ethanol-water mixtures

Abstract

Conference

Keywords

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