• Korean Journal of Medicinal Crop Science
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• v.19 no.3
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• pp.191-197
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• 2011

In this study, we investigated antioxidant activities and whitening effects of Acer mono sap by encapsulation of nanoparticles. Acer mono sap was through ultra high pressure process and then encapsulated by lecithin. Nano-encapsulated The nanoparticles of Acer mono sap showed highest free radical scavengering effect as 89.7% in adding sample (1.0 mg/ml), compared to sap of non-encapsulation. It was showed strong inhibition effect on melanin production test by Clone M-3 cells as 47.8%. High inhibitory of tyrosinase was also measured as 85.8% by adding lecithin nano-particle of 1.0 mg/ml. The nano-particles also showed 14.8% of low cytotoxicity against human normal fibroblast cells in adding 1.0 mg/ml of the highest concentration. These results indicate that Acer mono sap may be a source of cosmetic agents capable of improving whitening effect and antioxidant activites.

• Korean Journal of Environment and Ecology
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• v.19 no.1
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• pp.55-62
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• 2005

To investigate the fore,:t community structure in the Danggol valley of Taebaeksan (Mt.), area, 45 plots$(10m\times10m)$, were set up with a random sampling method. By cluster analysis the forest community in the study area was classified into three groups (Larix leptolepis community, Fraxinus rhynchophylla-Carpinus cordata community, Betula costata-Quercus mongolica community). There were strong positive correlations between Euonymus sachalinensis and Rhododendron schlippenbachii: Weigela subsessilis and Rhododendron schlippenbachii, Euonymus sachalinensis; Acer pseudo-sieboldianum and Acer tegmentosum; Quercus mongolica and Tilia amurensis. While there were negative correlations between Acer pseudo-sieboldianum and Tilia amurensis, Acer ukurunduense: Quercus mongolica and Acer ukurunduense; Pinus koraiensis and Euonyms sachalinensis Fraxinus sieboldiana and Magnolia sieboldii, Carpinus cordata, Acer mono. Species diversity(H') of the investigated area was $0.7932\~1.2077$.

• Korean Journal of Veterinary Service
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• v.42 no.2
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• pp.43-51
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• 2019

The effects on the radical scavenging activities and hepatic lipid levels in rats fed a high-fat diet (HFD) in the 70% ethanolic extract from Acer tegmentosum Maxim (ATM) were evaluated. Total phenol content of ATM was 168.60 mg catechin/g in the 70% ethanolic extract of Acer tegmentosum. The DPPH and ABTS radical scavenging activities were 18.32 mM TE/g and 32.25 mM TE/g, respectively. Food efficiency ratio was lower significantly in supplemented group with 150 mg/kg BW/day during 5 weeks (HFD+ATM) compared to HFD. Total cholesterol and triglyceride contents in liver tissue of HFD+ATM were lower significantly compared to those of the HFD. Supplementation of ATM significantly decreased lipid peroxide contents and increased radical scavenging activity in the liver tissue compared with that of HFD group. Moreover, the hepatocytes of HFD rats showed a typical fatty liver morphology showing the presence of cytoplasmic lipid droplets, whereas administration of ATM attenuated the number and the size of lipid droplets. In the liver tissue of ATM administrated HFD group, the mRNA levels of SREBP-1c, $PPAR{\gamma}$, and FAS were decreased. Therefore, these results suggest that Acer tegmentosum extracts could have antioxidant activities and the hypolipidemic effects in liver tissue by its phenolic compounds.

• The Korean Journal of Mycology
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• v.41 no.1
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• pp.21-27
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• 2013

This study was carried out to investigated optimum mixing ratio of Korean natural Acer tegmentosum for production of functional oyster mushroom. Total nitrogen and carbon sources of Acer tegmentosum were 0.2% and 44.4%, respectively and C/N ratio was 234. Total nitrogen source and pH of substrate mixed with Acer tegmentosum were 2.7~2.9 and 4.8~5.0, respectively. The contents of $P_2O_5$, $K_2O$ and MgO at Acer tegmentosum media were higher than that of the control. Mycerial growth was the fastest at Acer tegmentosum 10%, and slower by increase of Acer tegmentosum substrate. Yields of fruiting body was the highest to 159 g/850 mL at 10% of Acer tegmentosum and dimeter and thick of pileus were the highest, too. The L value of pileus and stipes were decreased by increase of Acer tegmentosum substrate, but there was no significant difference in the a-value and the b-value. The contents of $P_2O_5$ and $K_2O$ of fruiting body were increased at Acer tegmentosum substrate, but there was no significant difference in contents of CaO, MgO and $Na_2O$.

• Korean Journal of Agricultural Science
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• v.20 no.2
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• pp.145-152
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• 1993

Vegetational data obtained from 15 quadrats of Mt. Daeam area were analysed by applying two multivariate methods : two-way indicator species analysis(TWINSPAN) for classification and detrended canonical correspondence analysis(DCCA) for ordination. The dominant tree species were Quercus mongolica, Acer pseudo-sieboldianum, Betula costata, and Acer mono in descending order. The pH ranges were 5.0 to 5.5 in the 15 sites near bog and 5.3 to 5.4 in the 3 sites within bog. The forest communities in Mt. Daeam were classified into Quercus mongolica-Acer mono, Quercus mongolica-Prunus sargentii, Quercus mongolica-Abies nephrolepis-Acer tschonoskii var, rubripes, and Quercus mongolica-Abies nephrolepis-Betula costata according to the TWINSPAN. The relationships between the distribution of dominant species of forest vegetation and soil in the forest of Mt. Daeam were investigated by analyzing soil nutrition gradient. Quercus mongolica-Prunus sargentii forests were distributed in the good sites in nutrition levels of total nitrogen, cation exchange capacity, $Mg^{+{+}}$ and $Ca^{+{+}}$ but Quercus mongolica-Abies nephrolepis-Betula costata forests in the poor sites in the nutrition levels.

• Korean Journal of Plant Taxonomy
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• v.41 no.4
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• pp.329-337
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• 2011

The Acer wilsonii complex including A. wilsonii, A. tutcheri, and A. confertifoilum is distributed in southern China. Morphological variation was examined to delimit the species and to determine whether recognition at the specific level was warranted. Univariate and bivariate statistical methods, based on data taken from herbarium specimens, were used to examine morphological variation between and within species. This study showed that A. tutcheri differed from A. wilsonii by its rather short inflorescence, small leaf blades, and three leaf lobes with distinctive serrate leaf lobes. In contrast, there was virtually no separation of taxa with respect to the paniculate-corymbose or short paniculate inflorescence between A. confertifolium and A. tutcheri, suggesting that A. confertifolium morphologically resembled A. tutcheri and is a rather smaller form of it. Circumscription of Acer wilsonii has been quite troublesome, because the important holotype and isotype specimens contained different species under the same number and were misleading with respect to the correct application of the name. Furthermore, lobation is very weak within ser. Sinensia, but diversified inflorescences usually occur in China. A three lobed leaves species, A. wilsonii, represents the reduction in lobation without any modification of panicle inflorescences and seems to be closely related to A. sinense. However, A. tutcheri, which shows a reduction in panicle inflorescence with four petals and sepals, may not be closely related to A. sinense. Three lobed taxa may not correctly reflect the true relationship within ser. Sinensia. The designated lectotype of A. wilsonii, line drawings of representative leaves of related species, a key, and distribution maps of these taxa are presented.

• Animal Systematics, Evolution and Diversity
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• v.12 no.2
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• pp.185-188
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• 1996

A new species, Periphyllus unmoonsanensis n. sp., arising on the Acer palmatum is described from Korea.

• Korean Journal of Environment and Ecology
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• v.23 no.1
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• pp.22-29
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• 2009

To investigate the vegetation structure of mountain valley from Cheonwangbong to Seonneotang, 23 plots($400m^2$) set up with random sampling method were surveyed. Two groups of Abies koreana community, Fraxinus mandshurica-Acer pseudo-sieboldianum community were classified by cluster analysis. Abies koreana was a major woody plant species in the valley area from Cheonwangbong to Mapogpo, and Pinus koraiensis, Acer pseudo-sieboldianum and Sorbus amurensis was partly occupied. High positive correlations was proved between Picea jezoensis and Sorb us amurensis, Taxus cuspidata, Fraxinus sieboldiana, Kalopanax pictus; Betula costata and Betula platyphylla var. japonica, Corn us controversa; Abies koreana and Pinus koraiensis; Stephanandra incisa and Betula ermani, Acer tegmentosum, Prunus sargentii; Acer pseudo-sieboldianum and Betula ermani; Fraxinus mandshurica and Deutzia prunifolia, Acer tschonoskii var. rubripes; Sorbus amurensis and Kalopanax pictus; Betula platyphylla var.japonica and Cornus controversa; Lindera erythrocarpa and Lespedeza maximowiczii, Quercus serrata, Styrax obassia; Lindera obtusi/oba and Abies holophylla; Carpinus laxiflora and Lespedeza maximowiczii; Fraxinus sieboldiana and Acer tschonoskii var. rubripes, Pinus koraiensis, Taxus cuspidata; Acer tschonoskii var. rubripes and Taxus cuspidata; Quercus mongolia and Rhododendron schlippenbachii; Quercus serrata and Styrax obassia, and relatively high negative correlations was proved between Abies koreana and Deutzia prunifolia; Lindera obtusi/oba and Pinus koraiensis. Species diversity(H') of investigated groups was ranged $2.7478{\sim}2.9573$.

• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.3
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• pp.455-460
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• 2010

This study was investigated the effect of the ultra filtration (UF) on extending shelf-life and increasing quality of Acer mono sap. To evaluate the quality changes of Acer mono sap before and after UF, crude ash, crude protein, minerals, free sugar, organic acid, pH, total acidity, browning index, turbidity and total microbial number were measured during storage periods at -1, 4 and $10^{\circ}C$. After UF, the ash, minerals, organic acid, total acidity, browning index and turbidity of Acer mono sap were slightly decreased, while the pH was slightly increased, and total microbial number was not detected. After UF, the pH, total acidity, browning index, turbidity and total microbial number of Acer mono sap were very stable during storage periods at -1 and $4^{\circ}C$. During the storage at $10^{\circ}C$, turbidity and total microbial number was slightly increased, while the pH of before UF was decreased and the total acidity, browning, turbidity and total microbial number was increased during storage periods. As the results of this study indicate application of UF on Acer mono sap could extend the shelf-life and quality without loss of natural minerals and useful components.

• Journal of the Korean Society of Food Science and Nutrition
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• v.20 no.5
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• pp.479-482
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• 1991

The medical use of Acer mono MAX. and Betula costata T. sap has had the long history in Korea. So the mineral and sugar contents of these sap gathered in Mt. Jiri area at spring were analyzed to investigate the scientific base of folk remedies by using ion liquid chromatography and high performance liquid chromatography. The values of chlorine and sulfate in Acer mono MAX. were 11.5 mg/l and 176.7 mg/l, and in Betula costata T. 26.5 mg/l and 162.4 mg/l, respectively. The values of potassium, sodium, calcium and magnesium in Acer mono MAX. were 67.9 mg/l, 5.6 mg/l, 73.8 mg/l and 4.5 mg/l, and in Betula costata T. were 152.1 mg/l, 9.7 mg/l, 39.2 mg/l and 5.7 mg/l, respectively. The values of copper, zinc and manganese in Acer mono MAX. were 0.057 mg/l, 0.483 mg/l and 5.071 mg/l, and copper, zinc, mangances and iron in Betula costata T. were 0.038 mg/l, 1.584 mg/l, 4.354 mg/l and 2.511 mg/l, respectively. The values of sucrose in Acer mono MAX. were 27.29 mg/l, glucose and fructose in Betula costata T. were 0.97 g/l and 3.05 g/l, respectively.