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      Three-Dimensional Appearance and Physicochemical Properties of Pleurotus eryngii under Different Drying Methods

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      Foods
      MDPI AG

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          Abstract

          This study investigated the effects of different drying methods on the drying characteristics, three-dimensional (3D) appearance, color, total polysaccharide content (TPC), antioxidant activity, and microstructure of Pleurotus eryngii slices. The drying methods included hot air drying (HAD), infrared drying (ID), and microwave drying (MD). The results showed that the drying method and conditions significantly influenced the drying time, with MD having a significant advantage in reducing the drying time. The 3D appearance of P. eryngii slices was evaluated based on shrinkage and roughness as quantitative indexes, and the best appearance was obtained by hot air drying at 55 and 65 °C. HAD and ID at lower drying temperatures obtained better color, TPC, and antioxidant activity, but MD significantly damaged the color and nutritional quality of P. eryngii. The microstructure of dried P. eryngii slices was observed using scanning electron microscopy, and the results showed that drying methods and conditions had an obvious effect on the microstructure of P. eryngii slices. Scattered mycelia were clearly observed in P. eryngii samples dried by HAD and ID at lower drying temperatures, while high drying temperatures led to the cross-linking and aggregation of mycelia. This study offers scientific and technical support for choosing appropriate drying methods to achieve a desirable appearance and quality of dried P. eryngii.

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          Most cited references53

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          Trends in microwave-related drying of fruits and vegetables

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            Effects of different drying methods on the product quality and volatile compounds of whole shiitake mushrooms

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              Infrared drying of apple slices

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                Author and article information

                Contributors
                Journal
                FOODBV
                Foods
                Foods
                MDPI AG
                2304-8158
                May 2023
                May 15 2023
                : 12
                : 10
                : 1999
                Article
                10.3390/foods12101999
                37238817
                95bc0842-f28f-43a7-b212-1e1c20a3644a
                © 2023

                https://creativecommons.org/licenses/by/4.0/

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