• Korean Journal of Food Science and Technology
• /
• v.53 no.2
• /
• pp.160-164
• /
• 2021

This study investigated various physiological activities to examine the applicability of the functional materials of Allium tuberosum root extract. The A. tuberosum root extract showed a low cytotoxicity against murine melanoma B16F10 cells. It also showed high DPPH radical scavenging activity (ID50, 6.2 ㎍/mL), inhibited tyrosinase activity (ID50, 115.4 ㎍/mL), and decreased melanin content (ID50, 31.5 ㎍/mL). Treatment of B16F10 cells with A. tuberosum root extract suppressed the protein expression of tyrosinase in a dose-dependent manner. These findings suggest that A. tuberosum root extract inhibits melanin synthesis by suppressing intracellular tyrosinase expression. Additionally, A. tuberosum root extract inhibited elastase with an ID50 value of 145.1 ㎍/mL and contained isoquercitrin. These results indicate that A. tuberosum root extract is an appropriate natural material.

• Research in Plant Disease
• /
• v.14 no.1
• /
• pp.76-78
• /
• 2008

During the investigation of Allium decline in Pohang, Korea, root-knot nematode was found from root of Allium tuberosum Roth. It was identified as Meloidogyne incognita and was first reported from Allium tuberosum. Allium decline was associated with root-knot nematode, root mite and Fusarium sp. but root-knot nematode appeared to be the main cause of Allium decline.

• Journal of Bio-Environment Control
• /
• v.25 no.4
• /
• pp.320-327
• /
• 2016

Allium hookeri is used for food and medical materials in Asia. This study was carried out to elucidate the effects of shading rates on growth and quality of A. hookeri cultivation in greenhouse. Treatments were given with 35%, 55%, 75% and 95% shading rates and non-shading (Control). Photosynthesis photon flux density (PPFD) of control, 35%, 55%, 75%, and 95% shading were 792, 515, 351, 182, and $78.2{\mu}mol{\cdot}m{\cdot}s^{-1}$ respectively. The emergence ratio was 98% under non-shading, 35% and 75% shading condition, and it was 100% under 55% and 95% shading condition on April 20, 2016. These results showed no correlation between emergence rate and shading treatment. When shading net was set up inside at greenhouse, fresh weights in control, 35%, 55%, 75%, and 95% shading treatments were 1,142, 3,511, 5,936, 6,408 and 3,779kg/10a, respectively. When shading net was set up outside at greenhouse, fresh weights in control, 55%, 75%, and 95% shading treatments were 1,372, 5,442, 6,238 and 3,595kg/10a, respectively. Dry weight, percentage of dry matter, number of leavesand branches, plant height and root length in 75% shading treatment were higher than other shading treatments. From these results, we suggested that the proper shading rate in a greenhouse is 75% for A. hookeri cultivation in middle area of Korea.

• Journal of Convergence for Information Technology
• /
• v.10 no.7
• /
• pp.232-239
• /
• 2020

This study evaluated the antioxidant and anti-inflammatory activity of ethanol extracts using three parts of the chives plant: the bulb, the leaf, and the flower. As a result of DPPH and ABTS radical scavenging ability, the scavenging activity of the flower extract was higher than that of the bulb and leaf. In addition, as a result of FRAP analysis, antioxidant activity increased in all extracts depending on the extract concentration. The total polyphenol content was high in the following order: flower (11.29±0.37 mgGAE/g) > leaf (6.61±0.14 mgGAE/g) > bulb (5.7±0.67 mgGAE/g) extract. The cytotoxicity of the three extracts against rat macrophage RAW264.7 cells and HaCaT cells, both of which are human cutaneous keratinocyte cell lines, was minimal. NO by LPS was generated as a result of examining the anti-inflammatory activity of each extract through the NO colorimetric analysis method and ELISA. TNF-α secretion was decreased to a significant level in the flower ethanol extract. Therefore, these results indicate that there is a high possibility that the ethanol extract of chives, a natural plant resource, can be used as a cosmetic raw material.

• The Korean Journal of Pesticide Science
• /
• v.3 no.1
• /
• pp.46-50
• /
• 1999

Methanol extracts of 9 kinds of native medicinal plants(Taraxacum platycarpum, leaf; Pinus densiflora, leaf; Artemisia prinseps, leaf; Allium tuberosum, leaf; Cassia obtussifolia, whole; Sophora angestifolia, root; Stemonae sessilifolia, root; Lonicera japonica stem, leaf, flower; and Clivia miniata) were investigated for insecticidal effect. Methanol extracts of Pinus densiflora leaves and Sophora angestifolia radix showed relatively good insecticidal activity against Culex pipiens pallens larvae. Strong larvicidal activity against the Musca domestica larvae was produced from methanol extracts of Taraxacum platycarpum leaves and Allium tuberosom leaves. while Stemonae radix showed moderate activity. All materials tested revealed little or weak insecticidal activity against M. domestica adults.