• Asian Journal of Turfgrass Science
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• v.10 no.3
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• pp.187-194
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• 1996

Dictyostelid cellular slime molds were isolated from soils and harks of the subtropical forest of Torreya nucifera in Cheju island. The results were as follows: Polysphondylium pallidum,Dictyostelium purpureum, D. mucoroides, D. aureo-stipes var. aureo-stipes, D. flavidum, D. miniutum, P.violaceu m, D. monocrhasioides. D. brefeldianum, D. polvcephalum. D. areum var. areum, P. tenuissimum, D. fasciculatum. In this forest, P. pallidum and D. purpureum were occurred dominantly, and D. mucoroides and D. aureo-stipes var, aureo-stipes were the second dominant. It was distinguished that D. purpureum was much more cornmonly found than the other forests. Cellular slime molds from the barks of the tree heights of 1,3 and 5m were occured 7, 3 and 2 species respectively. Torreya fruit extract affected on the growth of D. aureo-stipes var. aureo-stipes and D. flavidum but not on D. purpureum and D. mucoroides. Key words: Cellular slime mold, Torreya forest, Torreya fruit extract.

• The Korean Journal of Community Living Science
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• v.26 no.4
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• pp.697-705
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• 2015

This study investigates antimicrobial effects of food-borne pathogens and the antioxidant activity of Torreya nucifera extract. The growth of food-borne pathogens including Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans was inhibited by the extract. The antimicrobial activity of the extract was highest for Staphylococcus aureus among seven gram-positive bacteria and for Pseudomonas aeruginosa among six gram-negative bacteria. The extract exhibited slightly lower DPPH radical-scavenging activity, but its ABTS radical-scavenging activity was higher than that of ${\alpha}$-tocopherol. The results demonstrate the extract's antimicrobial effects on food-borne pathogens as well as potent antioxidant capacity and suggest that Torreya nucifera may be used as a natural antibacterial agent and an effective antioxidant in food.

• Journal of Korean Society of Forest Science
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• v.99 no.3
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• pp.312-322
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• 2010

In Korea, Torreya nucifera (L.) Siebold & Zuccarini is widely distributed in the warm temperate zone of South coastal area and Jeju island, mainly as preserved forest in the vicinity of the Buddhist temple and Confucian temple. The objective of this study is in order to develop the conservation method and comprehension of vegetation community by current vegetation structure analysis of Torreya nucifera stand. As the results, the number of surveyed species in Torreya nucifera stand were total 148 species with 28 species of tree layer, 38 species of subtree layer, and 82 species of shrub layer. The appearance of the common species were Ligustrum obtusifolium Siebold & Zucc., Hedera rhombea Bean, and Trachelospermum asiaticum Nakai var. asiaticum. All the story of the surveyed region, Torreya nucifera maintained the current dominant species, but the subtree layer and shrub layer was decreased dominant rate because of the development of the crown of tree layer and biased growth of the subtree layer. Most of the tree layer and subtree layer in Torreya nucifera stands are composed of the sprout forest. Therefore, these results suggest that in order to maintain the healthy stand it is demanded for the application of selection thinning method for reducing crown competition in Torreya nucifera forests.

• Journal of the Korean Wood Science and Technology
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• v.29 no.4
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• pp.53-59
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• 2001

The needles of torreya(Torreya nucifera S. et Z) were collected, extracted with acetone-$H_2O$(7:3, v/v), fractionated with hexane, chloroform and ethylacetate, and freeze dried to give some dark brown powder. The ethylacetate soluble mixture was chromatographed on a Sephadex LH-20 column using a series of aqueous methanol and ethanol-hexane mixture as eluents. Most of the needle extractives were flavan and its methyl ether compounds such as (+)-catechin, (-)-epicatechin, (+)-gallocatechin, (-)-epigallocatechin, 3'-O-methyl-(+)-catechin and 3'-O-methyl-(-)-epicatechin including protocatechuic acid, one of benzoic acids. $^1H$- and $^{13}C$-NMR, NOE and CI-MS analyses were performed to elucidate the structures of the isolated compounds.

• Korean Journal of Food Science and Technology
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• v.50 no.3
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• pp.274-279
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• 2018

To evaluate the antioxidant activities of Korean and Chinese Torreya seeds, their total phenolic compound content, total flavonoid content, DPPH radical and ONOO-scavenging activities were compared using their water and methanol extracts. The effective compounds were identified and quantitatively analyzed by GC-MS. The DPPH and ONOO-scavenging activities were the highest in the Korean Torreya seeds. After using GC-MS to identify the active compounds, a total of eight compounds were identified in Korean Torreya seeds, and five compounds were found in Chinese Torreya seeds. In conclusion, we could confirm the antioxidant activity and the difference between active compounds of the Korean and Chinese Torreya seeds; we also confirmed the superiority of Korean Torreya seeds. Futhermore, this basic data about the Korean and Chinese Torreya seeds can be provided to consumers, so that they can select proper and suitable functional foods.

• Journal of the Korea Furniture Society
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• v.26 no.2
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• pp.163-170
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• 2015

This study was conducted to identify wood species for 51 excavated wooden shoes in the 12~16 Chungjin district of Jongno. Wood species of 31 Pinus sp., 12 Torreya nucifera S. et Z., 4 Ginkgo biloba L., 2 Salix sp., 1 Kalopanax pictus (Thunb.) Nakai. and 1 Morus sp. were identified. Wood used for wooden shoes was a species that can be mainly obtained easily around. Among them, Torreya nucifera S. et Z. grows in warm temperate zone of Korea, which shows that interregional cooperation has occurred.

• YAKHAK HOEJI
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• v.22 no.2
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• pp.87-90
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• 1978

"Bija"(Torreya nut), a tree belonging to the Torreyaceae family, is cultivated in Jae Joo Do and Jun Ra Do, Korea. The seed of Torreya nucifera, which has been widely used as folkmedicine in the treatment of tapeworm infestation, was examined on the sterol composition determined by gas liquid chromatography and thin layer chromatography on the preparative plates. Sterols were obtained from the nonsaponifiable matters of ether extract of the seed. It was noted that .betha.-sitosterol was the major sterol in the nut. The results showed that contents of sterols were campesterol 3.15-3.75%, stigmasterol 5.38-5.67%, $\beta$-sitosterol 85.61-86.28% and ${\delta}^{7}$-sterol 4.91-5.19% by gas liquid chromatography.

• 한국약용작물학회:학술대회논문집
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• 2007.05a
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• pp.185-186
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• 2007

• YAKHAK HOEJI
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• v.10 no.2_3
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• pp.29-32
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• 1966

The seed of Torreya nucifera, which has been widely used as folk medicine in the treatment of tapeworm infestation, was pharmacologically examined to isolate the biologically active component. It was found that the water insoluble part of the methanol extract of the seed, which was previously pressed to remove inactive oil fraction, showed remarkable anthelmintic effects on the rat infected with Hymenolepis diminuta (rat tapeworm).

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.32 no.1
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• pp.93-106
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• 2014

In this study, Analyze environment of location, investigation into vegetation resources, survey management status and establish to classify the management area for Natural monument No.374 Pyengdae-ri Torreya nucifera forest. The results were as follows: First, Torreya nucifera forest is concerned about influence of development caused by utilization of land changes to agricultural region. Thus, establish to preservation management plan for preservation of prototypical and should be excluded development activity to cause the change of terrain that Gotjawal in the Torreya nucifera forest is factor of base for generating species diversity. Secondly, Torreya nucifera forest summarized as 402 taxa composed 91 familly 263 genus, 353 species, 41 varieties and 8 forms. The distribution of plants for the first grade & second grade appear of endangered plant to Ministry of Environment specify. But, critically endangered in forest by changes in habitat, diseases and illegal overcatching. Therefore, when establishing forest management plan should be considered for put priority on protection. Thirdly, Torreya nucifera representing the upper layer of the vegetation structure. But, old tree oriented management and conservation strategy result in poor age structure. Furthermore, desiccation of forest on artificial management and decline in Torreya nucifera habitat on ecological succession can indicate a problem in forest. Therefore, establish plan such as regulation of population density and sapling tree proliferation for sustainable characteristics of the Torreya nucifera forest. Fourth, Appear to damaged of trails caused by use. Especially, Scoria way occurs a lot of damaged and higher than the share ratio of each section. Therefore, share ratio reduction Plan should be considered through the additional development of tourism routes rather than the replacement of Scoria. Fifth, Representing high preference of the Torreya nucifera forest tourist factor confirmed the plant elements. It is sensitive to usage pressure. And requires continuous monitoring by characteristic of Non-permanent. In addition, need an additional plan such as additional development of tourism elements and active utilizing an element of high preference. Sixth, Strength of protected should be differently accordance with importance. First grade area have to maintenance of plant population and natural habitats. Set the direction of the management. Second grade areas focus on annual regeneration of the forest. Third grade area should be utilized demonstration forest or set to the area for proliferate sapling. Fourth grade areas require the introduced of partial rest system that disturbance are often found in proper vegetation. Fifth grade area appropriate to the service area for promoting tourism by utilizing natural resources in Torreya nucifera forest. Furthermore, installation of a buffer zone in relatively low ratings area and periodic monitoring to the improvement of edge effect that adjacent areas of different class.