Moisture Sorption Method for Hygroscopic Samples Using a Modified Proximity Equilibration Cell

Kanade, P. B.; Pai, J. S.

doi:10.1111/j.1365-2621.1988.tb13566.x

Cited by 8 publications

(5 citation statements)

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“…A total of 32 loads were used for each starch sample with eight duplicated loads each for sorption and desorption measurements. After five to six days of equilibration (Chinachoti and Steinberg 1985; Kanade and Pai 1988), the moisture contents of samples were measured by oven-drying at 130°C (AACC 2000). The weight gained or lost by filter paper at each a w was measured in a separate experiment.…”

Section: Water Vapor Sorption and Desorption Of Rsmentioning

confidence: 99%

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Hot‐Water Solubilities and Water Sorptions of Resistant Starches at 25°C

Shin

Woo²,

Seib

2003

Cereal Chem

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Cereal Chem. 80(5):564-566Resistant starches (RS) were prepared from wheat starch and lintnerized wheat starch by autoclaving and cooling and by cross-linking. Heat-moisture treatment also was used on one sample to increase RS. The experimental resistant starches made from wheat starch contained 10-73% RS measured as Prosky dietary fiber, whereas two commercial resistant starches, Novelose 240 and 330, produced from high-amylose maize starch, contained 58 and 40%, respectively. At 25°C in excess water, the experimental RS starches, except for the cross-linked wheat starch, gained 3-6 times more water than the commercial RS starches, and at 95°C gained 2-4 times more. Cross-linked RS4 wheat starch and Novelose 240 showed 95°C swelling powers and solubilities of 2 g/g and 1%, and 3 g/g and 2%, respectively. All starches showed similar water vapor sorption and desorption isotherms at 25°C and water activities (a w ) < 0.8. At a w 0.84-0.97, the resistant starches made from wheat starch, except the cross-linked wheat starch, showed 10% higher water sorption than the commercial resistant starches.

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Section: Water Vapor Sorption and Desorption Of Rsmentioning

confidence: 99%

“…The use of a proximity equilibration cell (PEC) to rapidly equilibrate a sample to an atmosphere of known relative humidity was developed by Lang et al (1981). The PEC method has advantages over other methods (Chinachoti and Steinberg 1985;Kanade and Pai 1988) in precision, simplicity, and rapid measurement.…”

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confidence: 99%

Hot‐Water Solubilities and Water Sorptions of Resistant Starches at 25°C

Shin

Woo²,

Seib

2003

Cereal Chem

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“…Water uptake of solid polyacid samples was measured gravimetrically at fixed relative humidities and temperatures by using a home-built controlled humidity chamber inspired from the literature. , It was made from a small commercial borosilicate glass desiccator with a closely attached lid (see Scheme ), on whose bottom a small cylindrical vessel ( A ) containing a saturated aqueous solution of a specific inorganic salt was positioned. An excess of inorganic salt was added to the saturated solution to ensure that saturation was maintained in the whole range of investigated temperatures.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, Characterization, and Solid-State Properties of (CH₂–CH₂–C(COOH)₂)_n: A Highly Symmetrical, Semicrystalline Carbon-Chain Poly(carboxylic acid)

et al. 2020

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The synthesis and structural characterization of poly(trimethylene-1,1dicarboxylic acid), (CH 2 -CH 2 -C(COOH) 2 ) n , a carbon-chain polymer bearing two carboxylic acids on every third carbon alongside the backbone is described for the first time. Solid-state properties are investigated by a variety of techniques (WAXS, FT-IR, CP-MAS, TGA), in particular with respect to the semi-crystalline character of the polymer and its affinity toward water. The observed experimental features are rationalized on the basis of the ability for the macromolecular chains to associate via the pendant carboxylic acids, and of the high global symmetry obtained for this polyacid through the geminal placement of the side substituents.

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“…Experiments were conducted under controlled conditions of relative humidity and temperature. Proximity equilibration cells (PECs) have been used by many researchers , to study sorption isotherms. Six saturated salt solutions were used to obtain different relative humidities .…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

On the Study of the Drying Behavior of a Heat-Sensitive Biomaterial Undergoing Stepwise-Varying Temperature Schemes

Chou

Chua

2003

Ind. Eng. Chem. Res.

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A mechanistic model is presented for predicting the moisture and temperature distribution of biomaterials undergoing stepwise temperature drying. Good conformity of up to 7.4% was obtained between the simulated results and experimental data from product moisture and temperature. The calibrated model was used to conduct a parametric study on the stepwise variation of the air temperature and the impact on the internal temperature distribution and quality kinetics. The benefit of employing stepwise temperature profiles includes reversing the direction of heat flow within the product, resulting in appreciable improvement in product quality parameters such as ascorbic acid retention and surface color.

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Moisture Sorption Method for Hygroscopic Samples Using a Modified Proximity Equilibration Cell

Cited by 8 publications

References 4 publications

Hot‐Water Solubilities and Water Sorptions of Resistant Starches at 25°C

Hot‐Water Solubilities and Water Sorptions of Resistant Starches at 25°C

Synthesis, Characterization, and Solid-State Properties of (CH₂–CH₂–C(COOH)₂)_n: A Highly Symmetrical, Semicrystalline Carbon-Chain Poly(carboxylic acid)

On the Study of the Drying Behavior of a Heat-Sensitive Biomaterial Undergoing Stepwise-Varying Temperature Schemes

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Moisture Sorption Method for Hygroscopic Samples Using a Modified Proximity Equilibration Cell

Cited by 8 publications

References 4 publications

Hot‐Water Solubilities and Water Sorptions of Resistant Starches at 25°C

Hot‐Water Solubilities and Water Sorptions of Resistant Starches at 25°C

Synthesis, Characterization, and Solid-State Properties of (CH2–CH2–C(COOH)2)n: A Highly Symmetrical, Semicrystalline Carbon-Chain Poly(carboxylic acid)

On the Study of the Drying Behavior of a Heat-Sensitive Biomaterial Undergoing Stepwise-Varying Temperature Schemes

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Product

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Synthesis, Characterization, and Solid-State Properties of (CH₂–CH₂–C(COOH)₂)_n: A Highly Symmetrical, Semicrystalline Carbon-Chain Poly(carboxylic acid)