Showing papers by "Shin-Kyo Chung published in 2016"

Drying characteristics and physical properties of medicinal and edible mushrooms

Abstract: In this study, the drying characteristics of medicinal (Ganoderma lucidum, Phellinus linteus) and edible (Pleurotus eryngii, Lentinus edodes) mushrooms were investigated. Their shrinkage ratios, Hunter’s color values, and rehydration ratios were evaluated. Mushrooms were cut with rectangular (1 cm) and square (1×1 cm) shapes, and dried in the room temperature and at 50°C and 70°C using hot-air dryer. Initial moisture contents of edible mushrooms were higher than those of medicinal mushrooms, whereas final moisture contents were vice versa. Drying rate was the highest when drying at 70°C (p<0.05). Moreover the drying rate of square slices was higher than that of rectangular slices (p<0.05). The shrinkage ratios of both medicinal mushrooms and edible mushrooms were the least when drying at 50°C and 70°C, respectively (p<0.05). The changes of color values were less in the medicinal mushrooms dried in the room temperature than in the hot-air dried medicinal mushrooms (p<0.05). However, in case of edible mushrooms, the changes of color values were less in the hot-air dried mushrooms (p<0.05). Rehydration ratios of medicinal mushrooms dried at 50°C was the highest (p<0.05). In contrast, rehydration ratios of edible mushrooms was the highest when drying in the room temperature (p<0.05). Thus, the hot-air drying at 50°C would be suggested as the efficient drying method for both medicinal mushrooms and edible mushrooms.