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Article

Effect of Drying Methods and Processing Conditions on the Quality of Curcuma longa Powder

1
INTAL Research Group, INTAL Foundation, Institute of Food Science and Technology, Itagüí 05542, Colombia
2
BIOALI Research Group, Food Department, Faculty of Pharmaceutical and Food Sciences, Universidad de Antioquia, Medellin 050010, Colombia
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy Langrish
Processes 2022, 10(4), 702; https://doi.org/10.3390/pr10040702
Received: 11 March 2022 / Revised: 30 March 2022 / Accepted: 2 April 2022 / Published: 5 April 2022
(This article belongs to the Special Issue Advanced in Dewatering and Drying Processes)
Turmeric (Curcuma longa) is a spice that has been used for a long time in traditional medicine for its anti-inflammatory properties and recently used in the food industry for its dyeing and flavoring properties. This work studied the effect of different drying methods (convection oven drying, fluidized bed drying, and traditional solar drying) on the quality of Curcuma longa powder. The effect of UV radiation on turmeric powder using different packaging materials (glass, aluminum foil bag, and low-density polyethylene bag), was also studied. Subsequently, the fluidized bed drying method was used to evaluate the effect of drying temperature. The results show that convection and fluidized bed drying had no significant impact on turmeric quality. However, solar drying degraded curcuminoids by 36.5% and the ORAC value decreased by 14%. Regarding the packaging materials, the aluminum bag prevented the deterioration of 14% of the curcuminoids for the powder exposed to UV radiation. Finally, the effect of temperature on fluidized bed drying was evaluated at 50–80 °C, finding that there were no significant differences in the curcuminoid content and antioxidant capacity of turmeric powder. This implies that the range of temperature used in this study is appropriate for drying this material using fluidized bed drying, producing a turmeric powder with a high content of bioactive compounds, when compared to convection oven and solar drying. Therefore, the turmeric powder obtained in this way can be used as an active ingredient in the formulation of different kinds of foods and supplements. View Full-Text
Keywords: Curcuma longa; drying methods; antioxidant capacity; curcuminoids; packaging Curcuma longa; drying methods; antioxidant capacity; curcuminoids; packaging
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MDPI and ACS Style

Llano, S.M.; Gómez, A.M.; Duarte-Correa, Y. Effect of Drying Methods and Processing Conditions on the Quality of Curcuma longa Powder. Processes 2022, 10, 702. https://doi.org/10.3390/pr10040702

AMA Style

Llano SM, Gómez AM, Duarte-Correa Y. Effect of Drying Methods and Processing Conditions on the Quality of Curcuma longa Powder. Processes. 2022; 10(4):702. https://doi.org/10.3390/pr10040702

Chicago/Turabian Style

Llano, Sandra M., Ana M. Gómez, and Yudy Duarte-Correa. 2022. "Effect of Drying Methods and Processing Conditions on the Quality of Curcuma longa Powder" Processes 10, no. 4: 702. https://doi.org/10.3390/pr10040702

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