Hygroscopic behavior of lyophilized acerola pulp powder/Comportamento higroscopico do po da polpa de acerola liofilizada

Powder products are characterized by their practicality and long life. However, fruit powders have high hygroscopicity and tend to agglomerate due to its hydrophilic nature. The isotherms of equilibrium moisture content apply to the study of dehydrated food preservation potential. Acerola is a nutri...

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Veröffentlicht in:Revista brasileira de engenharia agrícola e ambiental 2016-03, p.269
Hauptverfasser: Ribeiro, Luciana C, da Costa, Jose M.C, Afonso, Marcos R.A
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description Powder products are characterized by their practicality and long life. However, fruit powders have high hygroscopicity and tend to agglomerate due to its hydrophilic nature. The isotherms of equilibrium moisture content apply to the study of dehydrated food preservation potential. Acerola is a nutritionally rich fruit, with great economic and industrial potential. The objective of this study was to analyse acerola powder adsorption isotherms obtained by lyophilization and characterize the powder obtained from lyophilized acerola pulp. Analysis of hygroscopicity, solubility and degree of caking were performed. Isotherms were represented by the mathematical models of GAB, BET, Henderson and Oswin, at temperatures of 25, 35 and 45°C. According to the results, the obtained powder showed hygroscopicity of 5.96 g of absorbed water 100[g.sup.-1] of solids, solubility of 95.08% and caking of 14.12%. The BET model showed the best fit to the adsorption isotherms of the acerola pulp powder obtained by lyophilization. The obtained isotherm was of type III, with a "J" shape. There was an inversion of the effect of temperature on the isotherms of acerola powders. Key words: Malpighia glabra hygroscopicity drying Produtos em po sao caracterizados pela sua praticidade e vida util longa; no entanto, os pos de fruta apresentam alta higroscopicidade e tendencia a aglomeracao devido a sua natureza hidrofilica. As isotermas de equilibrio higroscopico se aplicam para estudo do potencial de conservacao de alimentos desidratados. A acerola, por sua vez, e um fruto rico nutricionalmente e de grande potencial economico e industrial. O objetivo do presente trabalho foi analisar as isotermas de adsorcao do po de acerola obtido por liofilizacao e caracterizar o po obtido a partir de polpa de acerola liofilizada. Foram feitas as analises de higroscopicidade, do grau de caking e da solubilidade. Para representacao das isotermas foram utilizados os modelos matematicos de GAB, BET, Henderson e Oswin nas temperaturas de 25, 35 e 45°C cujos resultados mostraram que o po obtido apresentou higroscopicidade de 5,96 g de agua absorvida 100[g.sup.-1] de solidos, solubilidade de 95,08% e caking de 14,12%. O modelo de BET foi o que melhor se ajustou as isotermas de adsorcao do po de polpa de acerola obtido por liofilizacao. A isoterma obtida foi do tipo III em formato de "J"; observou-se a ocorrencia de uma inversao do efeito da temperatura sobre as isotermas dos pos de acerola. Palavras-chave: Ma
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However, fruit powders have high hygroscopicity and tend to agglomerate due to its hydrophilic nature. The isotherms of equilibrium moisture content apply to the study of dehydrated food preservation potential. Acerola is a nutritionally rich fruit, with great economic and industrial potential. The objective of this study was to analyse acerola powder adsorption isotherms obtained by lyophilization and characterize the powder obtained from lyophilized acerola pulp. Analysis of hygroscopicity, solubility and degree of caking were performed. Isotherms were represented by the mathematical models of GAB, BET, Henderson and Oswin, at temperatures of 25, 35 and 45°C. According to the results, the obtained powder showed hygroscopicity of 5.96 g of absorbed water 100[g.sup.-1] of solids, solubility of 95.08% and caking of 14.12%. The BET model showed the best fit to the adsorption isotherms of the acerola pulp powder obtained by lyophilization. The obtained isotherm was of type III, with a "J" shape. There was an inversion of the effect of temperature on the isotherms of acerola powders. Key words: Malpighia glabra hygroscopicity drying Produtos em po sao caracterizados pela sua praticidade e vida util longa; no entanto, os pos de fruta apresentam alta higroscopicidade e tendencia a aglomeracao devido a sua natureza hidrofilica. As isotermas de equilibrio higroscopico se aplicam para estudo do potencial de conservacao de alimentos desidratados. A acerola, por sua vez, e um fruto rico nutricionalmente e de grande potencial economico e industrial. O objetivo do presente trabalho foi analisar as isotermas de adsorcao do po de acerola obtido por liofilizacao e caracterizar o po obtido a partir de polpa de acerola liofilizada. Foram feitas as analises de higroscopicidade, do grau de caking e da solubilidade. Para representacao das isotermas foram utilizados os modelos matematicos de GAB, BET, Henderson e Oswin nas temperaturas de 25, 35 e 45°C cujos resultados mostraram que o po obtido apresentou higroscopicidade de 5,96 g de agua absorvida 100[g.sup.-1] de solidos, solubilidade de 95,08% e caking de 14,12%. O modelo de BET foi o que melhor se ajustou as isotermas de adsorcao do po de polpa de acerola obtido por liofilizacao. A isoterma obtida foi do tipo III em formato de "J"; observou-se a ocorrencia de uma inversao do efeito da temperatura sobre as isotermas dos pos de acerola. 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However, fruit powders have high hygroscopicity and tend to agglomerate due to its hydrophilic nature. The isotherms of equilibrium moisture content apply to the study of dehydrated food preservation potential. Acerola is a nutritionally rich fruit, with great economic and industrial potential. The objective of this study was to analyse acerola powder adsorption isotherms obtained by lyophilization and characterize the powder obtained from lyophilized acerola pulp. Analysis of hygroscopicity, solubility and degree of caking were performed. Isotherms were represented by the mathematical models of GAB, BET, Henderson and Oswin, at temperatures of 25, 35 and 45°C. According to the results, the obtained powder showed hygroscopicity of 5.96 g of absorbed water 100[g.sup.-1] of solids, solubility of 95.08% and caking of 14.12%. The BET model showed the best fit to the adsorption isotherms of the acerola pulp powder obtained by lyophilization. The obtained isotherm was of type III, with a "J" shape. There was an inversion of the effect of temperature on the isotherms of acerola powders. Key words: Malpighia glabra hygroscopicity drying Produtos em po sao caracterizados pela sua praticidade e vida util longa; no entanto, os pos de fruta apresentam alta higroscopicidade e tendencia a aglomeracao devido a sua natureza hidrofilica. As isotermas de equilibrio higroscopico se aplicam para estudo do potencial de conservacao de alimentos desidratados. A acerola, por sua vez, e um fruto rico nutricionalmente e de grande potencial economico e industrial. O objetivo do presente trabalho foi analisar as isotermas de adsorcao do po de acerola obtido por liofilizacao e caracterizar o po obtido a partir de polpa de acerola liofilizada. Foram feitas as analises de higroscopicidade, do grau de caking e da solubilidade. Para representacao das isotermas foram utilizados os modelos matematicos de GAB, BET, Henderson e Oswin nas temperaturas de 25, 35 e 45°C cujos resultados mostraram que o po obtido apresentou higroscopicidade de 5,96 g de agua absorvida 100[g.sup.-1] de solidos, solubilidade de 95,08% e caking de 14,12%. O modelo de BET foi o que melhor se ajustou as isotermas de adsorcao do po de polpa de acerola obtido por liofilizacao. A isoterma obtida foi do tipo III em formato de "J"; observou-se a ocorrencia de uma inversao do efeito da temperatura sobre as isotermas dos pos de acerola. 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However, fruit powders have high hygroscopicity and tend to agglomerate due to its hydrophilic nature. The isotherms of equilibrium moisture content apply to the study of dehydrated food preservation potential. Acerola is a nutritionally rich fruit, with great economic and industrial potential. The objective of this study was to analyse acerola powder adsorption isotherms obtained by lyophilization and characterize the powder obtained from lyophilized acerola pulp. Analysis of hygroscopicity, solubility and degree of caking were performed. Isotherms were represented by the mathematical models of GAB, BET, Henderson and Oswin, at temperatures of 25, 35 and 45°C. According to the results, the obtained powder showed hygroscopicity of 5.96 g of absorbed water 100[g.sup.-1] of solids, solubility of 95.08% and caking of 14.12%. The BET model showed the best fit to the adsorption isotherms of the acerola pulp powder obtained by lyophilization. The obtained isotherm was of type III, with a "J" shape. There was an inversion of the effect of temperature on the isotherms of acerola powders. Key words: Malpighia glabra hygroscopicity drying Produtos em po sao caracterizados pela sua praticidade e vida util longa; no entanto, os pos de fruta apresentam alta higroscopicidade e tendencia a aglomeracao devido a sua natureza hidrofilica. As isotermas de equilibrio higroscopico se aplicam para estudo do potencial de conservacao de alimentos desidratados. A acerola, por sua vez, e um fruto rico nutricionalmente e de grande potencial economico e industrial. O objetivo do presente trabalho foi analisar as isotermas de adsorcao do po de acerola obtido por liofilizacao e caracterizar o po obtido a partir de polpa de acerola liofilizada. Foram feitas as analises de higroscopicidade, do grau de caking e da solubilidade. Para representacao das isotermas foram utilizados os modelos matematicos de GAB, BET, Henderson e Oswin nas temperaturas de 25, 35 e 45°C cujos resultados mostraram que o po obtido apresentou higroscopicidade de 5,96 g de agua absorvida 100[g.sup.-1] de solidos, solubilidade de 95,08% e caking de 14,12%. O modelo de BET foi o que melhor se ajustou as isotermas de adsorcao do po de polpa de acerola obtido por liofilizacao. A isoterma obtida foi do tipo III em formato de "J"; observou-se a ocorrencia de uma inversao do efeito da temperatura sobre as isotermas dos pos de acerola. Palavras-chave: Malpighia glabra higroscopicidade secagem</abstract><pub>ATECEL--Associacao Tecnico Cientifica Ernesto Luiz de Oliveira Junior</pub><doi>10.1590/1807-1929/agriambi.v20n3p269-274</doi></addata></record>
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title Hygroscopic behavior of lyophilized acerola pulp powder/Comportamento higroscopico do po da polpa de acerola liofilizada
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