• Microbiology and Biotechnology Letters
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• v.28 no.2
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• pp.105-110
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• 2000

Various environmental factors such as pH, temperature and initial glucose concentration were investigated for enhancing cell growth in fermentations of Phellinus linteus WI-OOl, a producer of polysaccarides with potent anticancer activities. Optimal pH and temperature were around 5.5 and $28^{\circ}C$, respectively. Relatively little variation of pH was observed ranging between 5.5 and 6.5 during the whole fermentation period. Maximum cell concentration and specific growth rate were investigated in the media containing initial glucose concentrations of 0.5%, 1 %, 2%, 3% and 4%. High initial glucose concentration enhanced biomass production but showed negative effect on specific growth rate. In bioreactor experiments with various feeding strategies, increases of 28% and 42% in final cell concentration were obtaind as compared to conventional batch process, by adopting pulse and continuous supplement of 2% glucose solution, respectively.

• The Korean Journal of Mycology
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• v.39 no.2
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• pp.117-121
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• 2011

To produce the functional food materials, 50 kinds of the mycelial extracts from edible mushroom were examined for anticoagulant activity and Phellinus linteus showed the highest activity through the activated partial thromboplastin test (aPTT). The maximum production of anticoagulant activity and the mycelial growth was observed in culture medium containing soluble starch 3.0%, peptone 0.1%, $MgSO_4{\cdot}7H_2O^{\circ}C$ 0.1%, $K_2HPO_4$ 0.1% and in the culture conditions controlled at initial pH 7.0, $30^{\circ}C$ and 150 rpm by the rotary shaker. In addition, the maximum production of mycelial dry weight was 7.5 mg/mL after 10 days under the optimal conditions, and anticoagulant activity was reached to 390 sec in 5 L-jar fermentor.

• Mycobiology
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• v.43 no.1
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• pp.43-48
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• 2015

The medicinal fungus Phellinus linteus, in the family Hymenochaetaceae, has been used as a traditional medicine for the treatment of various diseases. In this study, the chemical constituents of the culture broth of P. linteus were investigated. P. linteus was cultured in potato dextrose broth medium, and the culture broth was extracted with ethyl acetate. The ethyl acetate-soluble portion was concentrated and subjected to ODS column chromatography, followed by Sephadex LH-20 column chromatography. Six compounds (1~6) were purified by preparative reversed-phase high-performance liquid chromatography. Spectroscopic methods identified their structures as caffeic acid (1), inotilone (2), 4-(3,4-dihydroxyphenyl)-3-buten-2-one (3), phellilane H (4), (2E,4E)-(+)-4'-hydroxy-${\gamma}$-ionylideneacetic acid (5), and (2E,4E)-${\gamma}$-ionylideneacetic acid (6). Compounds 1, 2, and 3 exhibited potent dose-dependent antioxidant activity.

• Mycobiology
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• v.42 no.2
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• pp.189-192
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• 2014

During a search for neuraminidase inhibitors derived from medicinal fungi, we found that the fermentation broth of Phellinus linteus exhibited potent neuraminidase inhibitory activity. Through bioassay-guided fractionation, two active compounds were purified from the ethyl acetate-soluble portion of the fermentation broth of P. linteus. These structures were identified as inotilone (1) and 4-(3,4-dihydroxyphenyl)-3-buten-2-one (2) by spectroscopic methods. Compounds 1 and 2 inhibited H1N1 neuraminidase activity with $IC_{50}$ values of 29.1 and 125.6 $125.6{\mu}M$, respectively, in a dose-dependent manner. They also exhibited an antiviral effect in a viral cytopathic effect reduction assay using MDCK cells. These results suggest that compounds 1 and 2 from the culture broth of P. linteus would be good candidates for the prevention and therapeutic strategies towards viral infections.

• Journal of Food Hygiene and Safety
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• v.13 no.1
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• pp.20-23
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• 1998

The objective of this study was to evaluate the bifidogenic effect and a-glucosidase inhibitory effect of artificially cultured Phellinus linteus. The water extract of P. linteus promoted the growth of Bifidobacterium breve as well as the decrease of final pH in the media culturing intestinal bacteria. The growth of lactic acid bacteria inhibited effectively the bacterial enzymes, ${\beta}-glucosidase,\;{\beta}-glucuronidase$ and tryptophanase, of intestinal bactetria. The water extract of P. linteus inhibited maltase, sucrase and ${\alpha}-amylase$ of rat intestine.

• The Korean Journal of Mycology
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• v.26 no.1 s.84
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• pp.86-90
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• 1998

Anti-complementary (immuno-stimulating) activities of the polymers produced from submerged mycelial culture, natural and artificially cultivated basidiocarps of Phellinus linteus were compared. Activity $(ITCH_{50})$ of polymer extracted from natural and artificial cultivated basidiocarps of P. linteus was 65.77% and 63.94%, respectively, which is not significant difference. However, the activities which were significantly low were found from endo-polymer (41.95%) and exo-polymer (21.87%) produced by submerged culture of P. linteus.

• Journal of Physiology & Pathology in Korean Medicine
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• v.19 no.4
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• pp.950-954
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• 2005

Phellinus linteus (Berk. & M.A. Curtis) Teng, commonly referred to as Sangwhang in Korea, is a well-known species of the genus Phellinus, which attracts great attention due to its phamarcological values. P. linteus has been reported to produce anti-tumor, anti-angiogenic, anti-mutagenic and immunomodulatory activities in vivo and in vitro. However, despite extensive biochemical studies on P. linteus, the wine produced by P. linteus fermentation (WPLF) has poorly investigated. In the present study, it was compared the in vitro cytotoxic effects of WPLF with ethanol as positive control. WPLF as well as ethanol induced the inhibition of cell proliferation and morphological changes in both HepG2 and A549 cells in a concentration-dependent manner, however, WPLG treatment has less cytotoxic effects than ethanol treatment. These cytotoxic effects were associated with the induction of apoptotic cell death, but, WPLG treatment has less apoptotisis inducing effects than ethanol treatment.

• Mycobiology
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• v.33 no.2
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• pp.104-108
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• 2005

Genus Phellinus taxonomically belongs to Aphyllophorales and some species of this genus have been used as a medicinal ingredients and Indian folk medicines. Especially, P. linteus and morphological-related species are well-known medicinal fungi that have various biological activities such as humoral and cell-mediated, anti-mutagenic, and anti-cancer activities. However, little is known about the rapid detection for complex Phellinus species. Therefore, this study was carried out to develop specific primers for the rapid detection of P. linteus and other related species. Designing the species-specific primers was done based on internal transcribed spacer sequence data. Each primer set detected specifically P. linteus (PL2/PL5R) and P. baumii (PB1/PB4R). These primer sets could be useful for the rapid detection of specific-species among unidentified Phellinus species. Moreover, restriction fragment length polymorphism analysis of the ITS region with HaeIII was also useful for clarifying the relationship between each 5 Phellinus species.

• Mycobiology
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• v.40 no.2
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• pp.142-144
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• 2012

During the search for neuraminidase inhibitors from medicinal fungi, we found that the culture broth of Phellinus linteus exhibited potent inhibitory activity. Solvent partition, Sephadex LH-20 column chromatography, and high-performance liquid chromatography (HPLC) were performed for purification of two active substances from the culture broth. According to $^1H$ NMR measurements and comparison of HPLC retention times with those of authentic compounds, their chemical structures were identified as hispidin and hypholomine B. Compounds (hispidin) 1 and 2 (hypholomine B) inhibited neuraminidase, with $IC_{50}$ values of 13.1 and 0.03 ${\mu}M$, respectively.

• Journal of Applied Biological Chemistry
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• v.56 no.3
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• pp.183-185
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• 2013

Two styrylpyranones (1 and 2) were isolated from the $CH_2Cl_2$-soluble fraction of Phellinus linteus and their structures were established by extensive Nuclear magnetic resonance (NMR) spectral data as inoscavin E and C. Both compounds showed significant prolyl endopeptidase inhibitory activity with $IC_{50}$ values of $4.26{\pm}0.14$ and $4.08{\pm}0.04{\mu}M$ and $K_i$ values of $1.50{\pm}0.02$ and $1.43{\pm}0.03{\mu}M$, respectively. They also exhibited antioxidant capacities against the ABTS radical system with $EC_{50}$ values of $6.47{\pm}0.05$ and $7.64{\pm}0.06{\mu}M$, respectively.