• Food Science and Preservation
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• v.21 no.3
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• pp.427-433
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• 2014

Ethanol and hot water extracts were prepared from Lindera obtusiloba Blume (LO) and Zanthoxylum piperitum DC (ZP) and used to evaluate their antimicrobial activities and thermal stability against six foodborne pathogens (3 gram-positive and 3 gram-negative bacteria). The antimicrobial activities were assessed using the agar diffusion method, and the thermal stabilities of extracts were examined after heat treatment at 60, 70, 80, and $100^{\circ}C$ for 10 min. The zones of inhibition by the LO extract or the ZP extract of the tested microorganisms were in the range of 21-30 mm and 19-25 mm, respectively, at 100 mg/mL concentrations. The 60% ethanol extract and the hot water extracts from LO showed the strongest antimicrobial effects against MRSA and Staphylococcus aurues, respectively. For the extract from ZP, the strongest antimicrobial effect was shown against S. aurues by 60% ethanol, and the weakest antimicrobial effect was shown against E. coli by the hot water extracts. The ZP extracts showed that the gram-positive bacteria were more sensitive than gram-negative bacteria. For the thermal stability of the extracts, the antimicrobial effects stabilized after heat treatment. Overall, the data suggest that the extracts have a potential for application in various food products for which a natural antimicrobial additive is desired.

• Journal of the Korean Society of Food Science and Nutrition
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• v.35 no.2
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• pp.187-191
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• 2006

This study was carried out to analyze antioxidative effects of extracts of Korean herbal materials, Diospyros kaki, Teucerium veronicoides and Zanthoxylum schinifolium. Total phenol compound content of Diospyros kaki extacts was higher than those of other extracts. The electron donating ability was $70\%$ in 250 ppm of D. kaki extracts, but was $70\%$ in 1,000 ppm of T. veronicoides and Z. schinifolium extracts. The superoxide dismutase (SOD)-like activity of T. veronicoides and Z. schinzfolium extract was 25, $30\%$ in 1,000 ppm of concentration, respectively, but those of D. kaki extracts was $99\%$. The nitrate scavenging ability of D. kaki extracts was $99\%$ in pH 1.2 and 1,000 ppm of extract solution, but those of T. veronicoides and Z. schinifolium extracts was 53, $72\%$, respectively. The nitrate scavenging ability of D. kaki, Z. schinifolium and T. veronicoides extract was 93, 55, and $40\%$ in pH 3.0 and 1,000 ppm of extract solution, respectively. The nitrate scavenging ability of extracts were $10\~20\%$ in pH 6.0. The nitrate scavenging ability of extracts was decreased according to increase of pH. The nitrate scavenging ability of D. kaki extracts was higher than those of T. veronicoides and Z. schinifolium extracts.

• Proceedings of the Zoological Society Korea Conference
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• 1994.10a
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• pp.84.2-84
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• 1994

• Proceedings of the Zoological Society Korea Conference
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• 1994.10a
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• pp.85.1-85
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• 1994

• Journal of the Korean Chemical Society
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• v.53 no.5
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• pp.613-619
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• 2009

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2009.04a
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• pp.548-556
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• 2009

본 연구에서는 산불발생 시 삼림 내 가연물의 화재강도 및 산불위험성을 예측하기 위하여 영동지역에서 자생하는 관목류 가운데 주요 분포수종으로 생강나무와 초피나무를 대상으로 생엽과 가지부위를 채취하여 착화특성, 화재전파특성, 피난특성을 고찰하였다. 발화온도 범위는 400$^{\circ}C$${\sim}$440$^{\circ}C$로 확인되었으며 생강나무의 생엽은 착화가 가장 빠르게 개시되었으며 가지부위는 생엽보다 착화는 늦으나 착화 후 화염유지시간이 길고 비교적 빠른시간에 많은 열량을 방출하는 것으로 나타났으며 초피나무의 가지부위는 연기방출량과 CO 및 $CO_2$의 방출량이 많은 것을 확인할 수 있었다.

• Proceedings of the Korean Nutrition Society Conference
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• 2003.05a
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• pp.190.2-190.2
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• 2003

• Korean Journal of Medicinal Crop Science
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• v.9 no.3
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• pp.192-197
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• 2001

This study was carried out to select proper SPME fiber for volatile component analysis in Zanthoxylum schinifolium and Z. piperitum. PDMS, PDMS/DVB and CAR/PDMS were better for single standard absorption analysis. PDMS and PDMS/DVB showed similar results in comparison between direct injection and the mixture of 24 single standards as well as the mixture of 10 single standards. PDMS and PDMS/DVB were not different each other in absorption patterns between direct injection and headspace SPME regardless of split ratio of GC injection port. However PDMS/DVB rather than PDMS was effective in absorbing the sesquiterpenes within 30-40 minutes as using the SDE extracts from Z. schinifolium and Z. piperitum.

• Korean Journal of Food Science and Technology
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• v.21 no.4
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• pp.562-568
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• 1989

The essential oils from ripe fruit peel and leaf of Zanthoxylum piperitum DC were extracted by gas co-distillation method and analyzed by gas chromatography/mass spectrometry (GC/ MS) and retention index matching. The experimental results revealed the presence of over 100 volatile components. Major components were 1,8-cineol (25.47%), limonene (11.91%), geranyl acetate (9.01%), myrcene (6.15%) in fruit peel and citronellal (23.11%), 1,8-cineol (18.38%), citronellol (6.04%) in leaf. Among the components identified were the following; in fruit peel, ${\alpha}-pinene$ and 13 hydrocarbons, linalool and 8 alcohols, citronellal and 3 aldehydes, carvone and 2 kotones, methyl salicylate and 7 esters, and 1,8-cineol and oxides, and in leaf, ${\alpha}-pinene$ and 7 hydrocarbons, linalool and 7 alcohols, citronellyl acetate and 5 esters, citronellal and 1 aldehyde, carvone, and 1,8-cineol and 1 oxide.

• Journal of Life Science
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• v.26 no.8
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• pp.936-942
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• 2016

As the incidence of environmental diseases is increasing due to harmful environmental factors, there is a rising interest in developing eco-friendly materials for housing. In this study, we sought to develop antimicrobial interior fabric blind materials by employing ethanol extract of a medicinal plant Zanthoxylum piperitum DC. As determined by the disc diffusion method, the zones of inhibition of the pericarp ethanol extract at a concentration of 5 mg/disc against Klebsiella pneumoniae, Staphylococcus aureus, and Streptococcus mutans were 13.5±1.5 mm, 14.0±0.5 mm and 15.0±0.1 mm, respectively, whereas the leaf ethanol extract (5 mg/disc) against K. pneumoniae, S. aureus, and S. mutans were 12.8± 0.3 mm, 13.5±1.0 mm, and 12.0±0.1 mm, respectively. The IC₅₀ of the leaf ethanol extract against K. pneumoniae, S. aureus and S. mutans were about 0.5 mg/ml, 0.1 mg/ml and 1.0 mg/ml respectively. To examine whether the leaf ethanol extract possessing antibacterial activity of Z. piperitum DC can be applicable to production of antimicrobial fabric blind materials, the fabrics treated with either 1.0% or 2.0% of the leaf ethanol extract were tested for antibacterial activity against K. pneumoniae and S. aureus using International Standard Fabrics Test Method. The results indicate that the fabric treated with the ethanol extract of Z. piperitum DC possesses an excellent antimicrobial activity against both pathogenic bacteria. These results suggest that Z. piperitum DC may be applicable to producing functional fabrics which are effective in reducing the harmful bacterial factors in indoor environments.