Both gelatin and starch have separately been widely used to develop edible films and, for various reasons, developing edible films by blending starch with gelatin has attracted much attention.For example, films made of polysaccharides and proteins show better gas barrier (O2 and CO2) properties than any pure films. Previous research has shown that gelatin and starch are immiscible and that phase separation affects the rheological, processing and mechanical properties of their blends. In most cases, gelatin shows as a continuous phase even in starch-rich blends.However, their compatibility can be improved by various methods.found that the time-dependent modulus of gelatin–starch gels was sensitive to the extent of gelatin crosslinking, as influenced by the thermal processing conditions. Under certain processing conditions, a gradual increase in starch content produced gels of lower elastic modulus and increased degree of microscopic phase separation.reported that DSC thermograms of gelatin–starch films based on intense thermal blending showed a single glass transition temperature, indicating the complete molecular miscibility of the components.found that phase separation depended on pH.reported that higher processing temperatures improved the permeability of gelatin–starch films. More recently,reported that, at a certain concentration, sago starch and fish gelatin could form compatible films.
It is well known that starch is a heterogeneous material containing two microstructures: linear (amylose) and branched (amylopectin). Previous studies have found that amylose and protein could form an amylose–protein complex, which is stable up to 90 ◦C in excess water solution. It is expected that this complex will improve the compatibility between gelatin and starch. Furthermore, hydroxypropylation has been widely used to improve the viscosity, transparency and stability of starch products.It is also expected that the flexible and hydrophilic groups of hydroxypropylene are more compatible with
gelatin. Another key property of starch modification by hydroxypropylation is its toxicological safety,and so it has been widely used as a food ingredient, as well as being used alone as capsule material
Both gelatin and starch have separately been widely used to develop edible films and, for various reasons, developing edible films by blending starch with gelatin has attracted much attention.For example, films made of polysaccharides and proteins show better gas barrier (O2 and CO2) properties than any pure films. Previous research has shown that gelatin and starch are immiscible and that phase separation affects the rheological, processing and mechanical properties of their blends. In most cases, gelatin shows as a continuous phase even in starch-rich blends.However, their compatibility can be improved by various methods.found that the time-dependent modulus of gelatin–starch gels was sensitive to the extent of gelatin crosslinking, as influenced by the thermal processing conditions. Under certain processing conditions, a gradual increase in starch content produced gels of lower elastic modulus and increased degree of microscopic phase separation.reported that DSC thermograms of gelatin–starch films based on intense thermal blending showed a single glass transition temperature, indicating the complete molecular miscibility of the components.found that phase separation depended on pH.reported that higher processing temperatures improved the permeability of gelatin–starch films. More recently,reported that, at a certain concentration, sago starch and fish gelatin could form compatible films.
It is well known that starch is a heterogeneous material containing two microstructures: linear (amylose) and branched (amylopectin). Previous studies have found that amylose and protein could form an amylose–protein complex, which is stable up to 90 ◦C in excess water solution. It is expected that this complex will improve the compatibility between gelatin and starch. Furthermore, hydroxypropylation has been widely used to improve the viscosity, transparency and stability of starch products.It is also expected that the flexible and hydrophilic groups of hydroxypropylene are more compatible with
gelatin. Another key property of starch modification by hydroxypropylation is its toxicological safety,and so it has been widely used as a food ingredient, as well as being used alone as capsule material
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Both gelatin and starch have separately been widely used to develop edible films and, for various reasons, developing edible films by blending starch with gelatin has attracted much attention.For example, films made of polysaccharides and proteins show better gas barrier (O2 and CO2) properties than any pure films. Previous research has shown that gelatin and starch are immiscible and that phase separation affects the rheological, processing and mechanical properties of their blends. In most cases, gelatin shows as a continuous phase even in starch-rich blends.However, their compatibility can be improved by various methods.found that the time-dependent modulus of gelatin–starch gels was sensitive to the extent of gelatin crosslinking, as influenced by the thermal processing conditions. Under certain processing conditions, a gradual increase in starch content produced gels of lower elastic modulus and increased degree of microscopic phase separation.reported that DSC thermograms of gelatin–starch films based on intense thermal blending showed a single glass transition temperature, indicating the complete molecular miscibility of the components.found that phase separation depended on pH.reported that higher processing temperatures improved the permeability of gelatin–starch films. More recently,reported that, at a certain concentration, sago starch and fish gelatin could form compatible films.
It is well known that starch is a heterogeneous material containing two microstructures: linear (amylose) and branched (amylopectin). Previous studies have found that amylose and protein could form an amylose–protein complex, which is stable up to 90 ◦C in excess water solution. It is expected that this complex will improve the compatibility between gelatin and starch. Furthermore, hydroxypropylation has been widely used to improve the viscosity, transparency and stability of starch products.It is also expected that the flexible and hydrophilic groups of hydroxypropylene are more compatible with
gelatin. Another key property of starch modification by hydroxypropylation is its toxicological safety,and so it has been widely used as a food ingredient, as well as being used alone as capsule material
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