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Influence of shell material on vitamin C content, total phenolic compounds, sorption isotherms and particle size of spray-dried camu-camu juice

  • Nina K. Silva (a1), Felix E.P. Cornejo (a2), Flavia S. Gomes (a2), Sergio M. Pontes (a2), Virgínia M. Matta (a2) and Suely P. Freitas (a1)...


Introduction. Camu-camu is a native Amazonian fruit mainly known for its high vitamin C content. Its composition confers high antioxidant capacity on this fruit and makes it a potential source of antioxidant products. The use of spray-drying with the aid of a carrier agent is a technique that has been applied for the preservation of important components of foods and drugs. The objective of our work was to evaluate the influence of those agents used as shell material on the vitamin content and total phenolic compounds of camu-camu powder juice obtained by spray-drying. Materials and methods. A commercial frozen camu-camu pulp was the raw material; maltodextrin and gum arabic were the selected carrier agents. Processes were performed in a mini-spray-dryer with inlet and outlet air temperatures of 180 °C and 85 °C, respectively, and a drying air flow rate of 700 L·h–1. Laser diffraction was used to determine the particle size distribution of the samples, and sorption isotherms of spray-dried camu-camu were measured using a static gravimetric method. Total phenolic compounds and vitamin C were determined in the raw pulp and in the powders obtained. Results. When using gum arabic and maltodextrin as the carrier agents, the moisture results obtained for the spray-dried camu-camu powders were 2.8% and 3.2%, respectively; the process yield was 84% and 72%, respectively. The spray-dried powder produced using gum arabic presented higher contents of vitamin C [(15,363 ± 226) mg·100 g–1] and phenolic compounds [(6,654 ± 596) mg GAE·100 g–1] than the powder obtained with maltodextrin, respectively (11,258 ± 298) mg·100 g–1 and (5,912 ± 582) mg GAE·100 g–1. Conclusions. The concentration factors for the vitamin C and phenolic compounds in camu-camu powder reveal the effectiveness of spray-drying to preserve the antioxidant capacity of this fruit. Gum arabic was a more effective barrier than maltodextrin for bioactive compound retention.


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[1]Zanatta, C.F., Mercadante, A.Z., Carotenoid composition from the Brazilian tropical fruit camu-camu (Myrciaria dubia), Food Chem. 101 (2007) 15431549.
[2]Rufino, M.S.M., Alves, R.E., Brito, E.S., Pérez-Jiménez, J., Saura-Calixto, F., Mancini-Filho, J., Bioactive compounds and antioxidant capacities of 18 nontraditional tropical fruits from Brazil, Food Chem. 121 (2010) 9961002.
[3]Chirinos, R., Galarza, J., Betalleluz-Pallardel, I., Pedreschi, R., Campos, D., Antioxidant compounds and antioxidant capacity of Peruvian camu camu (Myrciaria dubia (H.B.K.) McVaugh) fruit at different maturity stages, Food Chem. 120 (2010) 10191024.
[4]Zheng, W., Wang, S.Y., Oxygen radical absorbing capacity of phenolics in blueberries, cranberries, chokeberries, and lingonberries, J. Agric. Food Chem. 51 (2) (2003) 502509.
[5]Mattietto R.A., Carvalho A.V., Matta V.M., Ribeiro S.T., Avaliação dos teores de ácido ascórbico em progênies de camu-camu coletados em diferentes estádios de maturação, in: Proc.. II Simp. Ciênc. Tecnol. Alim., Aracaju, Brazil, 2010, Cd-Rom.
[6]Inoue, T., Komoda, H., Uchida, T., Node, K., Tropical fruit camu-camu (Myrciaria dubia) has anti-oxidative and anti-inflammatory properties, J. Cardiol. 52 (2008) 12732.
[7]Shahidi, F., Han, X., Encapsulation of food ingredients, Crit. Rev. Food Sci. Nut 33 (1993) 501547.
[8]Gouin, S., Micro-encapsulation: Industrial appraisal of existing technologies and trends, Trends Food Sci. Techol. 15 (2004) 330347.
[9]Dib Taxi C.M.A., Suco de camu-camu (Myrciaria dubia) microencapsulado obtido através de secagem por atomização, State Univ. Campinas, Thesis, Campinas, Brasil, 2001, 98 p.
[10]Singleton, V.L., Rossi, J.A., Colorimetry of total phenolics with phosphomolybdicphosphotungstic acid reagents, Am. J. Enol. Vitic. 16 (1965) 144168.
[11]Georgé, S., Brat, P., Alter, P., Amiot, M.J., Rapid determination of polyphenols and vitamin C in plant-derived products, J. Agric. Food Chem. 53 (2005) 13701373.
[12]Benassi, M.T., Antunes, A.J.A., Comparison of meta-phosphoric and oxalic acids as extractant solutions for determination of vitamin C in selected vegetables, Arq. Biol. Tecnol. 31(4) (1998) 507503.
[13]Stoloff, L., Calculations of water activity measuring instruments and devices: Collaborative study, J. AOAC 61 (1978) 11661178.
[14]Iglesias H.A., Chirife J., Handbook of food isotherms, Acad. Press, N.Y., U.S.A., 1982.
[15]Black, D.L., Mcquay, M.Q., Bonin, M.B., Laser-based techniques for particle-size measurement: a review of sizing methods and their industrial applications, Prog. Energy Comb. Sci. 22 (1996) 267306.
[16]Silva, M.A., Sobral, P.J.A., Kieckbusch, T.G., State diagrams of freeze-dried camu-camu (Myrciaria dubia (HBK) Mc Vaugh) pulp with and without maltodextrin addition, J. Food Eng. 77 (2006) 426432.
[17]Krishnan, S., Kshirsagar, A.C., Singhal, R.S., The use of gum Arabic and modified starch in the microencapsulation of a food flavoring agent, Carbohydr. Polym. 62 (2005) 309315.
[18]Mosquera, L.H., Moraga, G.N., Martínez-Navarrete, N., Critical water activity and critical water content of freeze-dried strawberry powder as affected by maltodextrin and Arabic gum, Food Res. Int. 47 (2) (2012) 201206.
[19]Rodrigues, R.B., Menezes, H.C., Cabral, L.M.C., Dornier, M., Rios, G.M., Reynes, M., Evaluation of reverse osmosis and osmotic evaporation to concentrate camu–camu juice (Myrciaria dubia), J. Food Eng. 63 (2004) 97102.
[20]Tonon, R., Brabet, C., Hubinger, M.D., Influence of process conditions on the physicochemical properties of açai (Euterpe oleraceae Mart.) powder produced by spray drying, J. Food Eng. 88 (3) (2008) 411418.


Influence of shell material on vitamin C content, total phenolic compounds, sorption isotherms and particle size of spray-dried camu-camu juice

  • Nina K. Silva (a1), Felix E.P. Cornejo (a2), Flavia S. Gomes (a2), Sergio M. Pontes (a2), Virgínia M. Matta (a2) and Suely P. Freitas (a1)...


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