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http://dx.doi.org/10.14480/JM.2020.18.4.357

Anti-inflammatory effect and useful contents of saccharification extract powder using hot water extract from log cultivation Lentinula edodes by different UV irradiation  

Yun, Kyeong-Won (Department of Oriental Medicine Resources, Sunchon Nat'l University)
Im, Seung-Bin (Jangheung Research Institute for Mushroom Industry)
Jin, Seong-Woo (Jangheung Research Institute for Mushroom Industry)
Kim, Kyung-Je (Jangheung Research Institute for Mushroom Industry)
Koh, Young-Woo (Jangheung Research Institute for Mushroom Industry)
Ha, Neul-I (Jangheung Research Institute for Mushroom Industry)
Jeong, Hee-Gyeong (Jangheung Research Institute for Mushroom Industry)
Jeong, Sang-Wook (Jangheung Research Institute for Mushroom Industry)
Kim, Seung-Ju (Joyfulfarm Co.)
Kim, Bok-Seon (Joyfulfarm Co.)
Kim, Ki-Man (Gwangju University)
Choi, Yu-Jin (Imsil Cheese & Food Research Institute)
Song, Da-Hye (Imsil Cheese & Food Research Institute)
Seo, Kyoung-Sun (Jangheung Research Institute for Mushroom Industry)
Publication Information
Journal of Mushroom / v.18, no.4, 2020 , pp. 357-364 More about this Journal
Abstract
The grade and price of Lentinula edodes largely differs in preference depending on the product area and seasonal factors. The product amount of autumn L. edodes was higher than that of spring L. edodes, but high quality, which is divided into "Hwago" is low in preference. Mostly, the autumn L. edodes is obtained as powder; hence, it is necessary to develop a processing method to utilize its flavor and aroma at an affordable price. Additionally, we estimated the content of 𝛽-glucan, ergosterol, vitamin D2, reducing sugars, and free amino acids and evaluated the anti-inflammatory activity of saccharification powder of log-cultivated L. edodes. In the saccharification powders obtained via 7 min of UV irradiation of log-cultivated L. edodes, 𝛽-glucan and vitamin D2 contents were found to be the highest, whereas ergosterol content was found to be the lowest. The content of reducing sugars ranged from 62.4 mg/L to 68.2 mg/L. The free amino acids were higher in these saccharification powders than in the control. Subsequently, RAW 264.7 cells were treated with different concentrations (10, 50, 100, 200, 300, and 500 ㎍/mL) of the saccharification powders of log-cultivated L. edodes obtained via different UV irradiation time applications. The cells showed good viability; the anti-inflammatory effect was found to be the highest at 7 min UV irradiation. Therefore, 7 min of UV irradiation was determined to be the optimum condition for manufacturing saccharification powders of log-cultivated L. edodes. Hence, saccharification powders of log-cultivated L. edodes may be used as a raw material for natural sweeteners, food additives, and in the food industry.
Keywords
Lentinula edodes; Vitamin $D_2$; Free aminoacids; Anti-inflammatory effect; Saccharification powder;
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