• The Korean Journal of Mycology
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• v.44 no.3
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• pp.150-154
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• 2016

To determine a favorable substrate formulation for Grifola frondosa, physicochemical conditions, culture properties, and yields according to various substrate formulations were investigated. Based on these analyses, T4 (80:5:15 ratio of oak sawdust to dried bean-curd refuse to corn husk) resulted in a shorter cultivation period and higher yields (weight of fresh mushrooms harvested at maturity) than those of other treatments. The physicochemical properties of T4 were pH 5.4, 2.4% crude fat contents, 54 C/N ratio, 74.3% porosity, and 0.26 g/cm3 bulk density. These results emphasize the importance of optimal substrate development on the production efficiency of G. frondosa mushrooms and have implications for commercial applications.

• The Korean Journal of Mycology
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• v.26 no.1 s.84
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• pp.25-30
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• 1998

Present expriments were conducted to determine the possibility of cultivation of Coriolus versicolor selected among the higher fungi growing in Korea. Dried apple sawdust used in this study consisted of 31.5% C, 0.54% N, 2.41 % CaO, 0.05% $P_2O_5$, 0.48% MgO and 0.81% $K_2O$(pH 5.6). Coriolus versicolor mushrooms were cultivated on the sawdust media; apple sawdust; rice bran=80:20 in 850cc polypropylene bottles. The isolate of Coriolus versicolor used was YCV collected from an Apple farm in Youngchun district. It took 34 days to make fruitbody from spawning. The fruit bodies produced the total fresh weight 28 g in a bottles, and converted to 64% of fresh weight.

• Journal of Mushroom
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• v.7 no.1
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• pp.9-21
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• 2009

This study was executed in an attempt to investigate a artificial requisites of fruitbody occurrence. Environmental requirements on habitat for fruitbody occurrence of collected cultures resulted in leading to $13-16^{\circ}C$ and 75% relative humidity, and requiring silt loam of soil texture which had more nutritional substances than a dry field. Optimal temperature was $25^{\circ}C$, medium PDB, and pH 5.0 in cultural conditions. Mannose required of 5% in ASI 59002, 59003, 59004, but 3% in ASI 59001 was selected as optimum carbon source. The substrates stimulating sclerotium formation were cotton waste, or cotton waste + oak sawdust (mixture ratio of 8:2), which had 20% additive of wheat barn respectively. Sclerotium was formed well in the substrate adjusted chemical properties by applying 2% of calcium sulfate. Sclerotium formation was the most effective in the treatment of peat moss + oak sawdust (mixture ratio of 5:5) + 30% of wheat barn.

• The Korean Journal of Mycology
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• v.44 no.4
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• pp.300-306
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• 2016

Recently, the incidence of oak wilt disease has been increasing in Korea, resulting in an increasing number of dead trees. In this study, we performed sawdust bag cultivation of shiitake (Lentinula edodes) using oak wilt-diseased logs and measured the antioxidant activities of the resulting mushrooms. For sawdust media, 4 types of logs (healthy, infected, dead, and fumigated ones) were used. As inocula, three strains of L. edodes (NIFoS 764, Sanjo 701ho, and Sanmaru 2ho) were used. The productivity of L. edodes from dead logs was similar to that from healthy logs. Except for the Sanmaru 2ho strain, fumigated logs and infected logs yielded a lower productivity of L. edodes compared to healthy logs. In terms of antioxidant activity, L. edodes grown on sawdust from fumigated logs showed higher values than those from other logs.

• The Korean Journal of Mycology
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• v.6 no.2
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• pp.25-30
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• 1978

Present experiments were conducted to determine the possibility of cultivation of 9 edible wild species selected among the higher fungi growing in Korea. In the investigation on the mycelial growth according t6o the different media, the mycelial growth of Coprinus comatus was fast on the CSA medium, when malt extract was added to the basal medium PSA, the mycelial of Lapista nuda and Auricularia auricula-judae was fast in growth and density. In the spawning, the mycelial growth of Pholiota squarrosa on the oak tree's sawdust, Pleurotus cornucopiae on the broad-leaves' sawdust, and Coprinus comatus on the compost was respectably fast and also it shown to be possibility of artificial cultivation owing to their carporphore budding when Coprinus comatus and Lepiota alborubescens cultivated on the rice straw, Auricularia auriculajudae and Pleurotus cornucopiae on the sawdust of the popla and Pholiota squarrosaon the sawdust of the oak tree.

• Korean journal of applied entomology
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• v.61 no.2
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• pp.377-385
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• 2022

Most pruning branches of mulberry, Korean raspberry (bokbunja), and blueberries are discarded without use. These discarded pruning branches were utilized as feed in the investigation of the development and oviposition characteristics of Protaetia brevitarsis with a focus on breeding possibilities. It was observed that the developmental period of P. brevitarsis larvae fed with berry fermented sawdust from mulberry, bokbunja, and blueberry was shortened to 157.3 130.3 days, and 140 days, respectively, compared to 169.3 days for those fed with oak fermented sawdust. The weight and survival rate of the larvae also increased. Under all three types of fermented sawdust feed, the percentage of larvae with weight ≧ 2.5 g during the group was over 60% between 6-8 weeks after hatching; however under oak fermented sawdust feed, it was within 10%, and the percentage only increased after 10 weeks. The average number of eggs laid per female was ≧ 80, with an average oviposition period of approximately 9 weeks; however, there was no significant difference owing to the large deviation per individual. Furthermore, mixed fermented sawdust from the three berries enhanced the growth rate of larvae, and there was no difference in the number of eggs laid compared to those fed with control oak fermented sawdust. Our study demonstrates berry fermentation sawdust is just as effective as oak fermentation sawdust in the breeding of P. brevitarsis.

• The Korean Journal of Mycology
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• v.27 no.4 s.91
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• pp.252-255
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• 1999

This study was carried out to investigate the physiological charateristics of Hericium erinaceus in sawdust media. The optimum temperature was $25^{\circ}C$ and the optimum pH was 5. Mycelial growth and density of H. erinaceus was quite good when oak tree sawdust were used as cultural substrates. The best mycelial growth in H. erinaceus were observed when wheat pollard was added as supplement on sawdust substrates. The optimum supplement ratios of wheat pollard and magnecium sulfate were 20% and 0.1% respectively, for H. erinaceus.

• The Korean Journal of Mycology
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• v.24 no.2 s.77
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• pp.149-154
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• 1996

Effects of various kinds of sawdusts, supplements and culture conditions on activities of several enzymes such as protease, phenoloxidase and cellulase produced from mycelium of P. ostreatus grown on sawdust medium were studied and the results are as follows; Higher specific activity of these enzymes was observed when oak tree sawdust and poplar tree sawdust were supplemented with rice bran or wheat bran at rate of 30%, 20% and 10% in total volume respectively. Higher total activities of protease, phenoloxidase and cellulase were observed at 70% of the moisture contents of culture media, while lower activity of these enzymes was observed with 40% moisture contents of sawdust culture medium. The pH 4 and 9 of the sawdust media appeared to be optimum pH for the. production of protease while pH 5 and 7 were optimal for the production of phenoloxidase. The pH 6 of the sawdust medium was optimal for the production of cellulase. The optimum incubating temperature for the production of protease, phenoloxidase and cellulase was $25^{\circ}C$. Higher total activities of protease and phenoloxidase were observed when culture medium was added with wood vinegar at the control, and 0.5% for cellulase.

• Journal of the Korea Organic Resources Recycling Association
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• v.18 no.1
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• pp.98-103
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• 2010

This study was carried out on the composting of the most part of the plant waste materials inflowed-drifting into the dam during the localized heavy rain and the rainy season, due to the abnormal climate change, and for the sewage sludge banned to dispose legally into the ocean from the year of 2012. It was analysed the distinctive physicochemical qualities of the compost with treatment S-1(dam suspended particle sawdust : oak tree bark : sewage sludge : chicken manure = 30 : 20 : 40 : 10) and treatment S-2(dam suspended particle sawdust : oak tree bark : sewage sludge : chicken manure = 30 : 30 : 30 : 10). Both S-1 and S-2 maintained for 10 days at above $65^{\circ}C$ of the compost pile temperature, and the most of its pathogen were destroyed. In case of pH, until the 90th day into composting, S-1 with the pH value of 7.78 was slightly higher than S-2. The C/N value of S-1 was 15.3 and that of S-2 was 16.9. The quality of its final product was satisfied to the manufacture-standards. The GI value of S-1 was 91 higher than that of S-2, which was 84. In conclusion, it is highly recommendable to manufacture S-1 for its frequent usage of dam suspended particle sawdust and sewage sludge, and for its excellent quality and safety.

• Journal of Korean Society of Forest Science
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• v.98 no.1
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• pp.49-54
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• 2009

This study aims to compare the profitability of using small diameter logs of Quercus species in terms of net profit (ratio), net income (ratio). The small logs of Quercus species could be used for the bed logs for shiitake mushroom and Phellinus linteus, sawdust, charcoal, and wood chip. The data of cost and revenue are collected by a face-to-face survey method from the associated factories. Our results show that the profitability for Phellinus linteus production is highest because its price has been formed high due to low market competition mainly resulted from capital service cost and production technique requirement. The next is followed by Shiitake mushroom, sawdust, wood chip, and charcoal. The study also reveals that profitability for long returning periods of investment is higher than that of short returning periods.