Properties of gelatin-based films with added ethanol–propolis extract

Bodini, Renata Barbosa; Sobral, Paulo José do Amaral; Fávaro-Trindade, Carmen Sílvia; Carvalho, Rosemary Aparecida de

doi:10.1016/j.lwt.2012.10.013

Cited by 141 publications

(153 citation statements)

References 34 publications

Supporting

Mentioning

104

Contrasting

Unclassified

Order By: Relevance

“…The interest in films produced from natural macromolecules is growing because of the current demand of consumers for more natural and environmentally friendly packaging materials (Emiroğlu et al, 2010;Bodini et al, 2013). Polymers obtained from renewable resources or valorization of agro-industrial wastes and by-products are regarded as a good alternative.…”

Section: Introductionmentioning

confidence: 99%

Effect of incorporation of nutraceutical capsule waste of safflower oil in the mechanical characteristics of corn starch films

et al. 2016

View full text Add to dashboard Cite

Biodegradable films blends made of safflower oil nutraceutical capsules waste: corn starch (20:4, 30:4, 40:4 and 50:4) were prepared. The objective of this study was to evaluate the influence of addition of different concentrations of safflower oil nutraceutical capsule waste in the mechanical properties (tensile strength, elongation at break, Young's modulus) and thickness of corn starch films. A decrease in tensile strength and Young's modulus and an increase in elongation at break were observed with the increase in the content of the nutraceutical capsule waste. The results showed that the blends of safflower oil capsules waste-corn starch films demonstrated promising characteristics to form biodegradable films with different mechanical characteristics.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of incorporation of nutraceutical capsule waste of safflower oil in the mechanical characteristics of corn starch films

et al. 2016

View full text Add to dashboard Cite

show abstract

“…The presence of ethyl cellulose (lowest amount of BP) provided flexibility to the films. Gelatin films have displayed good rupture resistance, but the presence of propolis extract decreased the tensile strength of these films (Bodini et al, 2013). Conversely, in this study, the films are made of BP with gelatin as an adjuvant (lower amount) and the behaviour of the resulting film was different.…”

mentioning

confidence: 81%

“…During the extraction process of propolis constituents, the solvent carries a smaller amount of substances and a greater part is to be dissolved, constituting the residue or (BP) that is not utilized and normally disposed (Bruschi et al, 2002). However, BP possesses in its composition several substances such as wax, resins and gums, which may be important in the development of micro/nanostructured compounds (Bruschi et al, 2003;Hasirci et al, 2011;Sulaiman et al, 2011;Bodini et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Pharmaceutical films made from the waste material from the preparation of propolis extracts: development and characterization 855 cellulose containing propolis extract as a therapeutic agent have already been proposed, showing that propolis incorporation enables the obtainment of polymeric films with physical and mechanical properties, dependent on the extract concentration used (Bodini et al, 2013;Rowe, Sheskey, Quinn, 2009). These observed film properties are mainly due to the polymer characteristics and to the presence of resins, gums, waxes, proteins, minerals and other chemicals in the propolis extract.…”

mentioning

confidence: 99%

“…In contrast, F1 displayed the lowest values, which may be explained by the highest BP concentration in this film. Propolis is a material utilized by bees to protect the comb from humidity and it was observed that the addition of propolis extract to gelatin films contributed to a significant reduction of the water vapour permeation (Bodini et al, 2013). The formulations containing gelatine demonstrated higher moisture uptake capacity due to greater water solubility.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Pharmaceutical films made from the waste material from the preparation of propolis extracts: development and characterization

Toledo

Bavato

Rosseto

et al. 2015

Braz. J. Pharm. Sci.

View full text Add to dashboard Cite

This study investigated the development and characterized the physicochemical properties of films obtained from by-products (BP) from the preparation of propolis extracts. Films were produced in the presence and absence of a polymeric adjuvant (gelatin or ethylcellulose) and propylene glycol by a solvent casting method. Density, surface topography by scanning electron microscopy, mechanical properties (folding endurance, tensile strength and percentage elongation), water vapour permeability (WVP), moisture uptake capacity, thermogravimetry, differential scanning calorimetry and Fourier transform infrared spectroscopy (FTIR) were determined. The films were a transparent, light greenishyellow colour, with a uniform surface, and were flexible and easy to handle. The thickness and density of the preparations indicated that the compounds were homogeneously dispersed throughout the film. Mechanical properties were influenced by the film composition; films containing gelatin were more resistant to stress, while those containing ethylcellulose were more flexible. Increasing the adjuvant concentration decreased the elasticity and the rupture resistance, but increased the moisture uptake capacity and WVP of the formulations. BP was thermally stable as were the films. FTIR tests suggested interactions between BP and the adjuvants. This work could contribute to the utilization of BP to prepare films for food and pharmaceutical uses Uniterms: Propolis/byproducts. Propolis/use of waste material/films development. Films/propolis byproducts/physicochemical properties. Polymers. Ethylcellulose. Gelatin.Este estudo investigou o desenvolvimento e as características físico-químicas de filmes obtidos com o resíduo (BP), normalmente descartado, advindo da preparação de extratos de própolis. Os filmes foram produzidos com e sem adjuvantes poliméricos (gelatina ou etilcelulose) e propilenoglicol, pelo método de evaporação de solvente. Foram determinadas a densidade, a topografia de superfície usando microscopia eletrônica de varredura, as propriedades mecânicas (resistência à dobra, tensão e elongação), transmissão de vapor de água (WVP), capacidade de absorção de umidade, termogravimetria, calorimetria exploratória diferencial e espectroscopia de infravermelho com transformada de Fourier (FTIR). Os filmes demonstraram coloração verde-amarelada, transparência, uniformidade de superfície, homogeneidade, flexibilidade e fácil manuseio. A espessura e a densidade das preparações indicaram que os compostos estavam dispersos de forma homogênea. As propriedades mecânicas foram influenciadas pela composição dos filmes e aqueles que continham gelatina apresentaram-se mais resistentes enquanto os compostos por etilcelulose demonstraram maior flexibilidade. Com o aumento da concentração polimérica, a resistência e a elasticidade diminuíam, porém aumentou a capacidade de absorção de água e a WVP das formulações. BP apresentou estabilidade térmica assim como os filmes. Os testes de FTIR sugeriram interações entre o BP e os adjuvantes utilizados. Es...

show abstract

Development of poly(lactic acid) films with propolis as a source of active compounds: Biodegradability, physical, and functional properties

Ulloa

Vidal

Dicastillo

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Active films (AFs) using polylactic acid (PLA) as a polymeric matrix containing various propolis concentrations (5, 8.5 and 13%) as the active agent (AA) were developed using a casting method. The purpose was to determine the effects of the incorporation of AA on the physical properties of the films and to evaluate the antioxidant and antimicrobial activities. Tensile strength and elastic modulus of the AFs decreased relative to the control (PLA without AA). Introducing the active substances from propolis into the PLA also affected its thermal properties (glass transition). Adding AAs to the polymer generated more opacity with a green-yellowish colour compared to the control. In addition, AFs exhibited reduced water vapor permeability as the AA concentration increased. Biodegradation assay showed that the AFs degraded faster than the control. AFs exhibited antioxidant activity, which was measured as the ability to scavenge free radicals (DPPH and ABTS), due to the presence of bioactive compounds (phenolics). Antimicrobial activity was evaluated against Escherichia coli and showed a reduction over 2 4-log cycles. Therefore, incorporation of propolis is a useful strategy for the development of active packaging with antioxidant and antimicrobial effects, which increase the shelf-life of food products.

show abstract

Properties of gelatin-based films with added ethanol–propolis extract

Cited by 141 publications

References 34 publications

Effect of incorporation of nutraceutical capsule waste of safflower oil in the mechanical characteristics of corn starch films

Effect of incorporation of nutraceutical capsule waste of safflower oil in the mechanical characteristics of corn starch films

Pharmaceutical films made from the waste material from the preparation of propolis extracts: development and characterization

Development of poly(lactic acid) films with propolis as a source of active compounds: Biodegradability, physical, and functional properties

Contact Info

Product

Resources

About