Optimization of the spray drying process for obtaining cape gooseberry powder: an innovative and promising functional food

  • Misael CORTÉS R. Universidad Nacional de Colombia Sede Medellín https://orcid.org/0000-0003-3407-1635
  • Gustavo HERNÁNDEZ S. Universidad Nacional de Colombia Sede Medellín
  • Eliana M. ESTRADA M. Universidad Nacional de Colombia

Abstract

Background: currently, functional foods are the type of foods of most interest to the modern consumer, due to the health benefits they provide. Objectives: Optimize the spray drying process to obtain cape gooseberry powder added with active compounds. Methods: A process of spray drying was carried out to obtain a powder from cape gooseberry suspensions added with vitamin C, iron, folic acid, isolated soy protein and dietary fiber. The drying process was optimized according to the characteristics of food formulations and operating conditions, obtaining a product with low hygroscopicity, high solubility and high levels of physiologically active compounds. Response surface methodology was used, considering a central composite design with four factors: maltodextrin (0-40%p/p), inlet air temperature (170-210°C), atomizer disc speed (16000-24000 rpm) and outlet air temperature (75-95°C). Results: The results showed a higher retention of vitamin C (69.7±0.7%), folic acid (90.9±1.8%) and iron (90.8±1.0%) with the food formulation containing a 24.4% of maltodextrin and the drying process defined by an atomizer disc speed of 19848 rpm and inlet and outlet air temperature of 194.2°C and 87.7°C, respectively. Conclusions: The spray drying process is an effective technology that provides added value to the fruit of cape gooseberry, allowing the incorporation and conservation of active compounds such as iron, folic acid and ascorbic acid.
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Author Biographies

Misael CORTÉS R., Universidad Nacional de Colombia Sede Medellín
Faculty of Agricultural Sciences, Department of Agricultural Engineerig and Food, Functional Foods Research Group, PhD, Titular Professor
Gustavo HERNÁNDEZ S., Universidad Nacional de Colombia Sede Medellín
Faculty of Agricultural Sciences, Department of Agricultural Engineerig and Food, Functional Foods Research Group, MSc, Titular Professor
Eliana M. ESTRADA M., Universidad Nacional de Colombia
Functional Foods Research Group, Research

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Published
2017-04-27
How to Cite
CORTÉS R. M., HERNÁNDEZ S. G., & ESTRADA M. E. M. (2017). Optimization of the spray drying process for obtaining cape gooseberry powder: an innovative and promising functional food. Vitae, 24(1), 59-67. https://doi.org/10.17533/udea.vitae.v24n1a07
Section
Foods: Science, Engineering and Technology