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KMID : 1134820090380020211
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Journal of the Korean Society of Food Science and Nutrition
2009 Volume.38 No. 2 p.211 ~ p.216
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The Comparison of Growth and Quality Characteristics during the Storage of Pleurotus ostreatus Cultivated in the Remnants of Medicinal Herb Extracts
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Jun Jung-Ho
Park Sun-Min
Ko Byoung-Seob
Kim Ju-Ho
Nam Sang-Pil
Um Young-Ran
Hong Sang-Mee
Hwang Hak-Soo
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Abstract
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This study was conducted to determine whether Pleurotus ostreatus (oyster mushroom), cultivated in various ratios with herbal extract remnants instead of cotton supplemented with nutrients (the control), improved mycelial growth, mushroom yields and longevity during storage. In addition, we investigated the transfer of medicinal herb components into the mushrooms since they contained non-specific medicinal herbs and their composition could not be controlled. Mushrooms cultivated with 70% and 100% medicinal herb remnants had faster growth rates, higher yields and less failure in the development of the fruit body than the control group. There were no differences in HPLC chromatogram among the methanol extracts of Pleurotus ostreatus in all groups. In addition, glycyrrhizin, an indicative compound of licorice which was a major herb among the herbal remnants, was not detected in any of the extracts. Pleurotus ostreatus that was cultivated with 70% and 100% herbal extract remnants had improved storage longevity in comparison with the control. They exhibited the least weight loss during storage among the groups and they maintained firmness in the stipe and pileus. However, the sources of media did not alter the color difference of the stipe and pileus or the quality index of the outward appearance during storage. In conclusion, cultivating media that contained over 70% of medicinal herb extract remnants increased the growth rates and yields of Pleurotus ostreatus. In addition, these mushrooms had enhanced storage longevity due to their firmness. Therefore, medicinal herb extract remnants should be utilized in the cultivating media of various mushrooms.
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KEYWORD
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oyster mushroom, storage, firmness, yield, growth rates
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