Comparison of Moisture Content and Drip Amount between Domestic and Imported Frozen Tricholoma matsutake and Sarcodon aspratus
2018
Kim, S.M., Sunchon National University, Suncheon, Republic of Korea | Kim, K.J., Jangheung Research Institute for Mushroom Industry, Jangheung, Republic of Korea | Jo, A.R., Sunchon National University, Suncheon, Republic of Korea | Park, J.K., Sunchon National University, Suncheon, Republic of Korea | Jo, C.H., Ministry of Food and Drug Safety, Cheongju, Republic of Korea | Kwon, K., Ministry of Food and Drug Safety, Cheongju, Republic of Korea | Kim, J.B., Sunchon National University, Suncheon, Republic of Korea
This study investigated the additives and water content used for artificial weight increase in frozen Tricholoma matsutake and Sarcodon aspratus. No additives were detected in mushrooms based on the additives identification test. Moisture content of domestic frozen T. matsutake was lowest at 88.54%, whereas those of Yanji, Tibet, and Yunnan were found to be 90.65%, 92.75%, and 94.88%, respectively. The drip% of frozen T. matsutake in Tibet, Yunnan, and Yanji were 23.13%, 20.07%, and 14.51%, respectively, whereas drip% of domestic frozen T. matsutake was 11.65%. The drip% of frozen S. aspratus was 20.79% of Korean and 22.69% of Chinese products, with no significant difference between the two groups. It is suspected that long-term water immersion is carried out during the washing process for frozen T. matsutake from Tibet and Yunnan, which showed significantly higher moisture content and drip% than domestic frozen T. matsutake. Artificial water immersion of raw T. matsutake was performed from 0.5 to 24 hours respectively, followed by freezing and thawing to compare the drip amount. As a result of artificial water immersion of T. matsutake, higher than 20% drip percentage was observed 2 hours after water immersion. Considering that water immersion processes do not take longer than 2 hours to wash mushrooms and food hygiene applies administrative measures when the net weight is 20% or less than the stated quantity, we suggest higher than 20% drip percentage to judge the artificial weight increase in frozen T. matsutake.
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