Temperature—composition phase diagram and gel properties of the gelatin—starch—water system

Khomutov, L.I.; Lashek, N. A.; Ptitchkina, Nataliya M.; Morris, Edwin R.

doi:10.1016/0144-8617(96)00001-x

Cited by 28 publications

(12 citation statements)

References 10 publications

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“…Therefore, it was assumed that the reduction in transparency with increasing DAS level could be a consequence of some degree of phase separation. It is well reported that protein‐polysaccharide systems are characterized by limited compatibility between their components 34, 35. In fact, proteins and polysaccharides are normally limitedly compatible.…”

Section: Resultsmentioning

confidence: 99%

Tensile properties, barrier properties, and biodegradation in soil of compression—Molded gelatin‐dialdehyde starch films

Martucci

Ruseckaite

2009

J of Applied Polymer Sci

123

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Glycerol (Gly)-plasticized gelatin (Ge) films crosslinked with dialdehyde starch (DAS) as environmentally friendly crosslinking agent were successfully produced by compression molding, demonstrating the capacity of gelatin of being transformed into films by using thermoplastic processes. The effect of DAS content on the color, light transmission, total soluble matter (TSM), water uptake (WU), water vapor permeability (WVP), oxygen permeability (OP) as well as biodegradability during soil burial was investigated. The addition of up to 10 wt % DAS (Ge-10DAS) generated transparent films, with reduced TMS, WU, WVP, and OP values but higher extensivity than the uncrosslinked counterpart. Further incorporating DAS into plasticized-gelatin matrix conducted to phase separation with detrimental effect of transparency and tensile properties. DAS-containing films degraded at slow rate than the uncrosslinked counterpart, suggesting that biotic attack during soil burial is restricted by covalent crosslinking points induced by DAS. Ge-10DAS films lost about 28% of their initial mass within the first 8 days of exposure to degrading medium; therefore, the material can be classified as rapidly degradable.

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Section: Resultsmentioning

confidence: 99%

Tensile properties, barrier properties, and biodegradation in soil of compression—Molded gelatin‐dialdehyde starch films

Martucci

Ruseckaite

2009

J of Applied Polymer Sci

123

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“…This is due to the fact that the droplets are protected against flocculation by a steric stabilization mechanism. [26,28,[58][59][60] Taking into account the homogenization with surfactant, sample S31.7/G2 presented a very low CI, showing that for this formulation, the emulsifier helped to stabilize a previously unstable emulsion. The higher stability of emulsions containing higher concentrations of solids could be explained based on polymer-induced depletion forces.…”

Section: Emulsion Stabilitymentioning

confidence: 99%

Influence of emulsification methods and use of colloidal silicon dioxide on the microencapsulation by spray drying of turmeric oleoresin in gelatin‐starch matrices

2016

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Microencapsulated turmeric oleoresin can present improved curcumin stability and be easily applied in hydrophilic systems. Most of the microencapsulation techniques rely on the initial emulsification of the core material in the wall biopolymers and this step affects the encapsulation efficiency and properties of the resulting microcapsules. The objective of this work was to evaluate the effects of different emulsification methods, the use of colloidal silicon dioxide and Tween 80 as additives, and the rheological behaviour of the encapsulating gelatin-starch dispersions on the emulsion stability, encapsulation efficiency, and yield of turmeric oleoresin microcapsules produced by spray-drying. The encapsulating matrices were prepared with varied concentrations of modified starch (from 0.22-0.317 g/g (22-31.7 wt%), dry basis) and gelatin (0-0.06 g/g (0-6 wt%), dry basis). The microstructure of the emulsions was evaluated through optical microscopy and small amplitude oscillatory shear rheology. The emulsification of turmeric oleoresin was performed by the following methods: high-shear mixing, using a rotor-stator homogenizer, with and without addition of Tween 80 as a surfactant; and by ultrasound homogenizer with and without the colloidal silicon dioxide (Aerosil 200). The homogenization method presented considerable influence on the emulsion stability and on the average droplet sizes in the emulsion. The concentration of gelatin directly affected the emulsion and microcapsule properties. Ultrasound homogenization and the use of colloidal silicon dioxide resulted in the highest encapsulation efficiency of turmeric oleoresin in the low total-solid formulations.

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“…The addition of DAS increased significantly opacity values 381 (P < 0.05) (Table 1), nevertheless for DAS contents lower than 10 wt%, films can be 382 considered transparent. Since no significant differences (P > 0.05) in film thickness 383 were detected (Table 1), it was assumed that this reduction in film transparency could 384 be consequence of some degree of phase separation due to the limited thermodynamic 385 compatibility between protein and polysaccharide (Khomutov et al, 1995) or by an 386 ineffective mixing during the dissolution stage of film formation. Optical microscopy 387 performed on iodine stained films confirmed the existence of two-phase morphologies 388 (Fig.…”

Section: Structural and Functional Characterization Of Blank Spc-gly-mentioning

confidence: 99%

Soybean protein films. Characterization and potential as novel delivery devices of Duddingtonia flagrans chlamydospores

Ciannamea¹,

Sagüés²,

Saumell³

et al. 2013

Biological Control

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Temperature—composition phase diagram and gel properties of the gelatin—starch—water system

Cited by 28 publications

References 10 publications

Tensile properties, barrier properties, and biodegradation in soil of compression—Molded gelatin‐dialdehyde starch films

Tensile properties, barrier properties, and biodegradation in soil of compression—Molded gelatin‐dialdehyde starch films

Influence of emulsification methods and use of colloidal silicon dioxide on the microencapsulation by spray drying of turmeric oleoresin in gelatin‐starch matrices

Soybean protein films. Characterization and potential as novel delivery devices of Duddingtonia flagrans chlamydospores

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