• Journal of Mushroom
• /
• v.16 no.1
• /
• pp.9-15
• /
• 2018

This study aimed to characterize the mycelial morphologies of Hericium erinaceus isolates, including 18 wild-type collections and cultivatable species 'Noru 1' and 'Noru 2', in Korea. The morphological characteristics were used to classify the species based on aerial or branched mycelia and their brownish or whitish colors when grown on potato dextrose agar. Of the wild-type collections, the isolates KFRI 509, KFRI 1091, KFRI 1093, and KFRI 1623 showed faster mycelial growth than the cultivars 'Noru 1' and 'Noru 2'. Moreover, 60% ethanol extracts of the fruiting body of the mushroom showed the highest phenol content and DPPH and ABTS radical scavenging activity. The DPPH and ABTS radical scavenging activities of KFRI 507, KFRI 508, KFRI 842, and KFRI 1623 were 10-60% higher than those of 'Noru 1' and 'Noru 2', depending on the extract concentrations. Thus, results suggest that these wild-type collections could be useful for breeding genetic sources or processed food materials with high antioxidant activity.

• Journal of Applied Biological Chemistry
• /
• v.62 no.2
• /
• pp.173-179
• /
• 2019

The aim of this study is to investigate the biological activities of Hericium erinaceus. 1,1-Diphenyl-2-picrylhydrazyl radical scavenging activity of H. erinaceus extract was higher than positive control. The inhibitory activities of xanthin oxidase, ${\alpha}$-glucosidase, and hyaluronidase was measured as functional food activity, and inhibitory activities on collagenase, tyrosinase, and astringent effect as beauty food activity in water and ethanol extracts from H. erinaceus. In functional food activity, xanthin oxidase inhibitory activities at $50-200{\mu}g/mL$ phenolic concentration in ethanol extracts from H. erinaceus showed inhibitory activity in dose dependent manner. ${\alpha}$-Glucosidase inhibitory activities at $50{\mu}g/mL$ phenolic concentration showed high activity of higher than 80%. Inhibitory activities on hyaluronidase as anti-inflammation factor showed inhibition effect in dose dependent manner both in water and ethanol extracts. In beauty food activity, Inhibitory activities on collagenase at $200{\mu}g/mL$ phenolic concentration in water and ethanol extracts showed high activity to 65.09 and 58.38% dose dependently. Tyrosinase inhibitory activity in water extract showed 9.4-58.24%. Astringent activity as pore shrink effect in ethanol extracts also showed a very high activity of 18.94-100%. Antimicrobial activity on pathogenic bacteria was highly effective on Staphylococcus aureus, Salmonella enteritidis, Vibrio parahaemolyticus and Escherichia coli at 2.5 mg/mL or above. Therefore, the extracts from H. erinaceus can be used as a functional food and beauty food resources and natural antimicrobial agent on pathogenic bacteria in food.

• Korean Journal of Food Science and Technology
• /
• v.35 no.5
• /
• pp.777-782
• /
• 2003

Response surface methodology (RSM) was used to monitor the characteristics of ethanol extracts from Hericium erinaceus. A central composite design was applied to investigate the effects of independent variables, ethanol concentration $(X_1)$, and sample ratio $(X_2)$ on dependent variables, soluble solid $(Y_1)$, total phenols $(Y_2)$, crude protein $(Y_3)$, electron donating ability $(Y_4)$, and browning color $(Y_5)$ of the extracts. As the sample ratio increased, the soluble solid content increased. Ethanol concentration played a minor role. Total phenols and crude protein increased with sample ratio. Sample ratio had a greater effect than alcohol concentration in the extraction of soluble solid, total phenols, crude protein, and browning color, with an exception of electron donating ability. The optimum ranges at 2 hr extraction was $3.9{\sim}5.0\;g/l00\;mL$ in sample ratio and $36{\sim}52%$ in ethanol concentration. Predicted values at the optimized conditions were acceptable when compared to experimental values.

• 한국약용작물학회:학술대회논문집
• /
• 2007.05a
• /
• pp.155-156
• /
• 2007

• 한국약용작물학회:학술대회논문집
• /
• 2010.10a
• /
• pp.139-139
• /
• 2010

• The Korean Journal of Mycology
• /
• v.37 no.1
• /
• pp.80-85
• /
• 2009

As a preliminary study in order to develop new varieties of Hericium species, this study was carried out to investigate the optimal temperature for mycelial growth, to figure out the applicability to sawdust cultivation on Quercus mongolica substrate, and to analyze the antioxidant capacity of ergothioneine and polyphenols in Hericium strains preserved in Korea Forest Research Institute (KFRI). In the results of optimal temperature for mycelial growth of eight Hericium erinaceus, it was $20^{\circ}C$ in a strain (KFRI 842), $25^{\circ}C$ in five strains (KFRI 507, 508, 509, 843, 845), and $30^{\circ}C$ in two strains (KFRI 582, 844). Optimal temperature for mycelial growth of H. coralloides (KFRI 713) was $25^{\circ}C$. Four strains (KFRI 508, 843, 844, 713) out of the total nine Hericium strains showed full mycelium growth within 20 days at the optimal temperature on PDA medium in petri-dish (85 mm in diameter). The other strains have need of more time for full mycelium growth. Mushroom production of H. erinaceus ranged from 215 to 384 g of fresh weight and its dry weight was 7 to 9% of it, whereas that of H. coralloides was 299 g of fresh weight and its dry weight was 10% of it. The contents of ergothioneine and polyphenols of H. erinaceus strains were different by strains and those were in the range of $1.6{\sim}3.7$ mg/g dw. and $5.9{\sim}7.8$ mg/g dw., respectively. On the other hand, those of H. coraloides were in the range of 1.7 mg/g dw. and 3.9 mg/g dw., respectively. From the results of correlation ($R^2$ = 0.1) between ergothioneine and polyphenols in the strains, it was found that the total contents of them differ by strains but the ratio of the two compounds was not very different in the strains.

• The Korean Journal of Mycology
• /
• v.32 no.2
• /
• pp.145-147
• /
• 2004

The ethyl acetate extracts from the liquid cultures of Coriolus versicolor, Phellinus linteus, and Hericium erinaceus showed significant antibacterial activities against Escherichia coli K88, E. coli K99, E. coli 987P, and Salmonella typhimurium 14058 causing bacterial diarrhea in Korean house pigs and chicken. Of these extracts, Coriolus versicolor extract showed the highest antibacterial activity. In addition, these extracts also showed significant growth inhibition against Staphylococcus aureus CARM3230 and E. coli CARM1381 which are known as kanamycin and ampicillin-resistant strains. These results showed that the mushroom extracts could be developed as a livestock feed additives that can replace commercial antibiotics, and also could be good resources for the development of a new antibacterial agent.

• The Korean Journal of Mycology
• /
• v.28 no.1
• /
• pp.16-21
• /
• 2000

Super water absorbent (CPAM-AS-hyd-1) was prepared by polymerization of acrylamide and allyl sulfonate salt with N,N'-methylene-bis-acrylamide as crosslinking agent, followed by alkaline hydrolysis and the effect on mycelial growth and sporophore production of edible mushrooms in the artificial cultivation was examined. The mycelial growth of edible mushrooms did not depend on the addition of super water absorbent upto 200 g of hydrated polymer gel per 100 cc medium. The proper hydrated polymer gel concentration for sporophore production of Pleurotus sajor-caju and Hericium erinaceus were 200 g and $200{\sim}250\;g$ per 100 cc medium, respectively. The proper hydrated polymer gel and puffed rice hull concentration for sporophore production of Flammulina velutipes was 200 g per 100 mm medium and 10% (v/v), respectively.

• Journal of Mushroom
• /
• v.17 no.1
• /
• pp.34-39
• /
• 2019

In the present study, physiological activities of hot water extracts and 70% ethanol extracts of three types of medicinal mushrooms (Hericium erinaceus, Cordyceps militaris, and Ganoderma lingzhi) produced in Korea and China were investigated. Both the hot-water and 70% ethanol extracts of H. erinaceus and C. militaris from Korea displayed the highest 2,2-diphenyl-1-picrylhydrazy radical scavenging activities. Nitrite scavenging activities of hotwater extracts of G. lingzhi from Korea and China (41% and 39%, respectively) were higher than the activities of 70% ethanol extracts. Total polyphenol contents of hot water extracts of H. erinaceus and C. militaris from Korea were higher than those of 70% ethanol extracts. The ethanol extracts of G. lingzhi from Korea displayed the highest total polyphenol content. C. militaris from Korea displayed the highest ${\beta}-glucan$ level (45.11%). ${\beta}-glucan$ content of H. erinaceus from China (30.87%) was higher than H. erinaceus from Korea (16.94%). The findings indicate that healthy ingredients can be maximally extracted using the optimal solvents for each mushroom. These results will be useful in understanding the difference in physiological activities between the solvents used for the extraction of medicinal mushrooms from Korea and China.

• Journal of Microbiology and Biotechnology
• /
• v.12 no.6
• /
• pp.957-961
• /
• 2002

The hypolipidemic effect of exe-polymer produced in submerged mycelial culture of Hericium erinaceus (HE), Auricularia auricula-judue (AA), Flammulina veluripes (FV), Phellinus pini (PP), and Grifola frondosa (GF) was investigated in dietary-induced hyperlipidemic rats. The animals were administered with exe-polymers at the level of 100 mg/kg body weight daily for four weeks. Hypolipidemic effect was achieved in all the experimental groups, however, HE exo-polymer proved to be the most potent one, which significantly reduced the plasma triglyceride ($28.9\%$), total cholesterol ($29.7\%$), low-density lipoprotein (LDL) cholesterol ($39.6\%$), phospholipid ($16.0\%$), and liver total cholesterol ($28.9\%$) level, when compared to the saline administered (control) group. The results of the present investigation strongly demonstrate the potential of HE exe-polymer in combating hyperlipidemia in the experimental animals.