Pateiro M, Vargas-Ramella M, Franco D, Gomes da Cruz A, Zengin G, Kumar M, Dhama K, Lorenzo JM. The role of emerging technologies in the dehydration of berries: Quality, bioactive compounds, and shelf life.
Food Chem X 2022;
16:100465. [PMID:
36225212 PMCID:
PMC9550524 DOI:
10.1016/j.fochx.2022.100465]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 09/05/2022] [Accepted: 09/29/2022] [Indexed: 11/09/2022] Open
Abstract
Berries comprise essential nutrients necessary for healthy living.
Convective, vacuum, microwave, and freeze-drying are the most common methods.
Pre-treatments improve permeability, accelerate drying, and inactivate oxidation.
Combined methods are recommended to assure high quality of dehydrated berries.
Berries are among the fruits with the highest nutritional and commercial value. This paper reviews the conventional and emerging dehydration methods most commonly used as postharvest treatment and discusses their efficacy in maintaining and/or improving the nutritional and functional qualities of dried berries. The characteristics of the conventional methods (e.g., convective drying, freeze-drying, spray-drying, osmotic dehydration), their pre-treatments, their combination, and intermittent drying, as well as their potential disadvantages are discussed. The use of emerging dehydration techniques (e.g., electromagnetic radiation drying, explosion puffing drying, heat pump drying, low-pressure superheated steam drying, microwave drying) allows to improve the quality of the dried berries compared to conventional techniques, in addition to reducing drying times, increasing drying speed and energy efficiency. Finally, the use of pre-treatments and the combination of technologies can enhance the quality of the final product as a result of the improvement in the effectiveness of the dehydration process.
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