Storage of ‘umbu-cajá’ pulp powder produced by lyophilization

STORAGE AND PROCESSING OF AGRICULTURAL PRODUCTS • Rev. bras. eng. agríc. ambient. 20 (12) • Dec 2016 • https://doi.org/10.1590/1807-1929/agriambi.v20n12p1118-1123 copy

Storage of ‘umbu-cajá’ pulp powder produced by lyophilization

Armazenamento da polpa de umbu-cajá em pó produzida por liofilização

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

This work aimed to study the chemical and physical stability of ‘umbu-cajá’ powders produced by lyophilization during storage. ‘Umbu-cajá’ pulps formulated with different concentrations of gum arabic (10, 20 and 30%), previously frozen, were dehydrated in benchtop lyophilizer at -40 °C for 48 h and disintegrated to obtain the powder, which was stored in laminated packages for 180 days at ambient conditions, with physical, chemical and physico-chemical analyzes performed at the beginning and every 30 days of storage. According to the results, all investigated parameters were significantly altered throughout the storage, yet with less intense variations for important variables, such as ascorbic acid, reducing sugars and titratable acidity. At the end of storage, all powders were microbiologically safe.

Key words:
Spondias spp.; dehydration; conservation

Authorship

Dyego da C. Santos

Universidade Federal de Campina Grande/Programa de Pós-graduação em Engenharia Agrícola. Campina Grande, PB. E-mail: dyego.csantos@gmail.com; anatrindade@deag.ufcg.edu.br; josivanda@gmail.com (Corresponding author)Universidade Federal de Campina GrandeBrazilCampina Grande, PB, BrazilUniversidade Federal de Campina Grande/Programa de Pós-graduação em Engenharia Agrícola. Campina Grande, PB. E-mail: dyego.csantos@gmail.com; anatrindade@deag.ufcg.edu.br; josivanda@gmail.com (Corresponding author)

Ana P. T. Rocha

Josivanda P. Gomes josivanda@gmail.com (Corresponding author)

Emanuel N. A. de Oliveira

Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte. Pau dos Ferros, RN. E-mail: emanuel.oliveira16@gmail.comInstituto Federal de Educação, Ciência e Tecnologia do Rio Grande do NorteBrazilPau dos Ferros, RN, BrazilInstituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte. Pau dos Ferros, RN. E-mail: emanuel.oliveira16@gmail.com

Esther M. B. de Albuquerque

Universidade Federal de Campina Grande/Programa de Pós-graduação em Engenharia de Processos. Campina Grande, PB. E-mail: esther_barros@hotmail.comUniversidade Federal de Campina GrandeBrazilCampina Grande, PB, BrazilUniversidade Federal de Campina Grande/Programa de Pós-graduação em Engenharia de Processos. Campina Grande, PB. E-mail: esther_barros@hotmail.com

Gilmar T. de Araujo

Universidade Federal de Campina Grande/Unidade Acadêmica de Engenharia Química. Campina Grande, PB. E-mail: gilmartrindade@ufcg.edu.brUniversidade Federal de Campina GrandeBrazilCampina Grande, PB, BrazilUniversidade Federal de Campina Grande/Unidade Acadêmica de Engenharia Química. Campina Grande, PB. E-mail: gilmartrindade@ufcg.edu.br

josivanda@gmail.com (Corresponding author)

SCIMAGO INSTITUTIONS RANKINGS

Tables

Tables (3)

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Table 1
Mean results of water content, total solids, water activity, reducing sugars and ascorbic acid of ‘umbu-cajá’ pulp powders produced through lyophilization during the storage period at ambient conditions

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Table 2
Mean results of total soluble solids (TSS), total titratable acidity (TTA), pH and TSS/TTA ratio of ‘umbu-cajá’ pulp powders produced through lyophilization during the storage period at ambient conditions

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Table 3
Mean results of luminosity, intensity of red, intensity of yellow, hue angle and chrome of the ‘umbu-cajá’ pulp powders produced through lyophilization during the storage period at ambient conditions

Table 1 Mean results of water content, total solids, water activity, reducing sugars and ascorbic acid of ‘umbu-cajá’ pulp powders produced through lyophilization during the storage period at ambient conditions

Water content: OM = 9.68%; CV = 0.84%; LSD for columns = 0.1617; LSD for rows = 0.2061
Total solids: OM = 90.32%; CV = 0.09%; LSD for columns = 0.1617; LSD for rows = 0.2061
Water activity: OM = 0.292; CV = 0.76%; LSD for columns = 0.0044; LSD for rows = 0.0056
Reducing sugars: OM = 20.64%; CV = 0.15%; LSD for columns = 0.0625; LSD for rows = 0.0797
Ascorbic acid: OM = 48.31 OM 100g-1; CV = 0.28%; LSD for columns = 0.2724; LSD for rows = 0.3472
G10, G20 and G30 – ‘Umbu-cajá’ powders with pulps formulated with 10, 20 and 30% of gum arabic, respectively; OM – Overall mean; CV – Coefficient of variation; LSD – Least significant deviation
Means followed by the same letter, lowercase in the columns and uppercase in the rows, do not differ statistically by Tukey test at 0.05 probability level; Statistical analysis applied individually for each parameter evaluated

Table 2 Mean results of total soluble solids (TSS), total titratable acidity (TTA), pH and TSS/TTA ratio of ‘umbu-cajá’ pulp powders produced through lyophilization during the storage period at ambient conditions

Total soluble solids: OM = 80.23 °Brix; CV = 0.41%; LSD for columns = 0.6579; LSD for rows = 0.8387
Total titratable acidity: OM = 5.02%; CV = 0.40%; LSD for columns = 0.0400; LSD for rows = 0.0510
pH: OM = 3.45; CV = 0.19%; LSD for columns = 0.0130; LSD for rows = 0.0165
TSS/TTA ratio: OM = 17.51; CV = 0.69%; LSD for columns = 0.2395; LSD for rows = 0.3053
G10, G20 and G30 – ‘Umbu-cajá’ powders with pulps formulated with 10, 20 and 30% of gum arabic, respectively; OM – Overall mean; CV – Coefficient of variation; LSD – Least significant deviation
Means followed by the same letter, lowercase in the columns and uppercase in the rows, do not differ statistically by Tukey test at 0.05 probability level; Statistical analysis applied individually for each parameter evaluated

Table 3 Mean results of luminosity, intensity of red, intensity of yellow, hue angle and chrome of the ‘umbu-cajá’ pulp powders produced through lyophilization during the storage period at ambient conditions

Luminosity: OM = 76.74; CV = 0.04%; LSD for columns = 0.0672; LSD for rows = 0.0856
Intensity of red: OM = 5.73; CV = 0.35%; LSD for columns = 0.0399; LSD for rows = 0.0509
Intensity of yellow: OM = 27.57; CV = 0.10%; LSD for columns = 0.0526; LSD for rows = 0.0671
Hue angle: OM = 78.39; CV = 0.06%; LSD for columns = 0.0879; LSD for rows = 0.1121
Chroma: OM = 28.17; CV = 0.09%; LSD for columns = 0.0509; LSD for rows = 0.0649
G10, G20 and G30 – ‘Umbu-cajá’ powders with pulps formulated with 10, 20 and 30% of gum arabic, respectively; OM – Overall mean; CV – Coefficient of variation; LSD – Least significant deviation
Means followed by the same letter, lowercase in the columns and uppercase in the rows, do not differ statistically by Tukey test at 0.05 probability level; Statistical analysis applied individually for each parameter evaluated

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Unidade Acadêmica de Engenharia Agrícola Unidade Acadêmica de Engenharia Agrícola, UFCG, Av. Aprígio Veloso 882, Bodocongó, Bloco CM, 1º andar, CEP 58429-140, Campina Grande, PB, Brasil, Tel. +55 83 2101 1056 - Campina Grande - PB - Brazil
E-mail: revistagriambi@gmail.com

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Storage of ‘umbu-cajá’ pulp powder produced by lyophilization

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[1] josivanda@gmail.com (Corresponding author)