• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.11
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• pp.44-52
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• 2020

This study was conducted to investigate the effect on Brain Quotient from inhalation of blended oils. The subjects of the study were 64 people aged 20 to 59 years, with 32 in the experimental group and 32 in the control group. Blended oil with six aromas (Lavender, Bergamot, Mandarin, Lemon, Cedarwood, Roman Chamomile) was given to the experimental group, and Jojoba oil was given to the control group, for 30 minutes. Before and after the experiment, BQ tests (SRQ, BRQ, ATQ, ACQ, EQ, ASQ, CQ, and BQ) from the experimental group and the control group were compared and analyzed using a brain-training machine (NeuroHarmony S). There was a significant difference between the experimental group and the control group in three out of the eight tests analyzed ATQ (p<.05), ACQ (p<.05), BQ (p<.05). In other words, aromatherapy improves concentration and memory by increasing attention, and helps to maintain mental activity, thinking ability, and behavioral balance. BQ also represents a comprehensive brain function, and aromatherapy is a good way to maintain human mental and physical health.

• Journal of Korean Society of Forest Science
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• v.88 no.4
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• pp.523-532
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• 1999

The studies were carried out to develop an urban forest aromatic bath in the idle space within city area for handicapped persons, patients and city workers, who having less chance to visit the natural forest aromatic bath. The environmental conditions were checked in the experimental double vinyl house where native and exotic aromatic woody and herbaceous plants were growing with minimum energy input in the periods of mid-winter and mid-summer. The growth and photoperiodic responses of the plants to the low and high temperatures were observed during winter and summer respectively. The most of herbaceous plants in the double vinyl house with the controlled minimum night temperature of $-2^{\circ}C$ had no winter injury but did not grow and started the growth in April. The exotic herbs such as Catnip faassen's(Nepeta x faassenia) and Lemon bergamot(Monarda citriodora) grew better in the longer photoperiodic conditions. The growth rates of Abies koreana, Thuja koraiensis and Pinus sylvestriformis in the early spring were affected mainly by the night minimum temperature and less affected by the photoperiodic conditions during winter. The native aromatic herbs such as Robdosia japonica, Molsa punctulata, Agastache rugosa and Codonopsis lanceolata showed stimulatory growth at the 16 hours day-length in case of the high temperature vinyl hose. The height and root collar diameter growth of pine seedlings were inhibited in maxim temperatures over $40^{\circ}C$ during summer.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.31 no.3 s.52
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• pp.265-271
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• 2005

This study is performed to investigate the effects of citrus essential oils on melanin production in B16 melanoma cells and reactive oxygen species (ROS) generation in RBL 2H3 cells. Five kinds of citrus essential oil (bergamot, grapefruit, lemmon, mandarin, petigrain) did not have any influence on DPPH radical scavenger activity, cell growth and cytotoxicity in B16 melanoma cells. In purified tyrosinase assay, both mandarin and petigrain essential oils dose-dependently inhibited its activity, but bergamot did not. In $1{\mu}M\;{\alpha}-MSH-stimulated$ B16 melanoma cells, all of 5 citrus essential oils inhibited melanin production in $\underline{a}$ dose dependent manner. On the other hand, four kinds of citrus essential oil dose-dependently increased ROS generation in RBL 2H3 mast cells, but mandarin did not. From the above results, it is possible that citrus essential oils nay be developed to be anti-melanogenic agent on the basis of their inhibitory effect on MSH-induced melanin production. Hut we can not rule out the possibility of the induction of allergy and inflammation since citrus essential oils caused ROS generation in RBL 2H3 mast cells.

• Food Science and Preservation
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• v.24 no.6
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• pp.871-878
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• 2017

The objective of this study was to compare antioxidant activities of green tea, rosemary, lemon and bamboo leaves extracts using three different extraction methods (80% ethanol sonication extraction, distilled water autoclave extraction, distilled water extraction at room temperature). As a result, green tea and rosemary extracts showed relatively high antioxidant activities compared with those of lemon and bamboo leaves. These green tea and rosemary extracts were subsequently added to soymilk and their mixtures were examined for antioxidant activities. Soymilk added with 10% green tea distilled water autoclave extracts and distilled water at room temperature extracts showed relatively high DPPH, $85.09{\pm}2.26%$, $84.38{\pm}1.97%$, and ABTS radical scavenging activities, $73.43{\pm}2.78%$, $81.34{\pm}4.78%$, respectively. On the other hand, soymilk added with 10% rosemary distilled water autoclave extracts showed remarkably higher DPPH radical scavenging activity while their ABTS radical scavenging ability was similar to that of non-added soymilk. In conclusion, our results suggest that the addition of green tea distilled water autoclave extracts, distilled water at room temperature extracts and rosemary distilled water autoclave extracts to soymilk could contribute to the development of added value soymilk products with increased antioxidant activities.

• Journal of the Korea Convergence Society
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• v.8 no.9
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• pp.127-133
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• 2017

The purpose of this study is to confirm the effect of natural tooth whitening using fruits that can be easily accessed in real life by increasing interest in tooth whitening in modern society. Twenty premolar teeth were divided into five groups (n=4). Strawberry (A), lemon (B), banana skin (C), baking soda (D) and whitening toothpaste (E) were treated with a toothbrush on the enamel surface. The tooth surface was treated with a toothbrush at the same time for 3 minutes for breakfast, lunch, and dinner, then washed with sterile distilled water, and stored in saline solution. This procedure was repeated for 4 weeks, and the color change of teeth was observed at intervals of one week. After 4 weeks, there was a significant difference in tooth color change after 3 weeks(p<0.05). Among them, strawberry and lemon showed higer effects to whitening toothpaste. It is believed that strawberries and lemons have a higher whitening effect than whitening toothpaste. Whitening toothpaste may be replaced with a safe natural whitening effect using strawberries and lemons instead of chemical ingredients that may be harmful to human body.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2007.10b
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• pp.78-83
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• 2007

The colors have a close to our life and there are many color names derived from plants in Japan. This study aimed to analyze relationship people and plants and investigated what the images of colors derived from plants related to the color names. Surveys on color images of abstract and concrete were conducted with adults who lived in the metropolitan area and in urban areas. The subjects were surveyed about images of similar colors derived from plants(3 type of similar two colors; pink, green and yellow) and asked to select a pair of color names(momo or pink, midori or green, yamabuki or lemon) corresponding to the color. The subjects were simultaneously presented with two similar colors and asked to give their perceptions of each color against 13 polar opposite pairs of terms or phrases using a Semantic Differential Scale, and asked to select the number of the 16 items concerned with life such as clothes and food. With the pink colors, many subjects did not feel opposite abstract images between these two similar colors and felt the same concrete images such as 'cosmetics' and 'clothes', and these color names such as momo and pink are confused. With the green colors and the yellow colors, many subjects felt opposite abstract images between these two similar colors such as 'natural - artificial' and 'rural - urban' and different concrete images such as 'plants' and 'plastics', and these two similar colors are distinguished by the color names such as 'midori - green' and 'yamabuki - lemon'. The results revealed that there are two patterns in the relationship colors derived from plants, color images and color names. In the pattern which images of colors derived from plants are connected with artificial things irrelevant to plants, the color names corresponding to the two similar colors are confused. On the other hand, in the pattern which images of colors derived from plants are connected with plants and artificial things, the two similar colors are distinguished by their color names. So demographics influenced the images of color, younger subjects compared with older tend to obviously distinguish images of colors derived from plants, and there are images of color influenced by the environment as a child. In both patterns, images of colors derived from plants are influenced by artificial things and natural colors are limited among many people. These results indicate that there are a few opportunities to see colors of plants which are full of variety. These results suggest that it is necessary to recognize colors derived from plants in relation to plants and to educate regarding the nature of plants, therefore landscape architecture focused on colors of plants is required.

• Korean journal of food and cookery science
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• v.19 no.5
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• pp.539-545
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• 2003

The physiological and sensory properties of breads, prepared with wheat flour substituted with various herbs, were evaluated. The specific gravities and maximum heights of the breads increased when the wheat flour was supplemented with 1% rosemary, lemon balm or lavender, and with 3% rosemary, but not with 3% lemon balm or lavender. The fermentation and cooling losses of the breads with added herbs were smaller than those of the control, but there was no significant difference in the baking loss. The lightness of the breads decreased with increases in the herb contents. In the texture measurements for the breads, the hardness decreased slightly on the addition of 1% of the herb powders, but increased on the addition of 3% of the herb powders. As for the results of the sensory evaluation, the overall acceptances of the breads with 3% added herbs were higher than those of the control and 1% added herb breads. The addition of herbs to the breads inhibited the growth on fungi, and the more herbs substituted, the higher the degrees of this inhibition. The moisture contents were slightly increased, and the staling rates during storage at 25 decreased, in breads with added herbs. These results suggest that the shelf-lives of the breads were extended by the addition of herbs.

• Journal of Conservation Science
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• v.37 no.5
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• pp.426-439
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• 2021

In this study, we compare the properties and estimate the durability of five oil colors that are the most popularly used colors in the conservation of oil paintings. A set of these colors was obtained form four manufacturers each, and their properties were analyzed by conducting deterioration experiments. Subsequently, we observed the colors and performed X-ray fluorescence analysis. As a result of colour observation and XRF analysis, it was confirmed that there are the differences according to the pigment types, mixing rations and the manufacturers even for colors having the same product name. The deterioration test indicated differences in the appearance of the colors ; for instance, the color difference was above 12.0 in most of the samples, including restoration color and acrylic gouache. In the case of Lemon Yellow a lot of discoloration and cracking occurred, and difference in gloss was ob served in Viridian of manufacturer C. Most cracks were ob served in the restoration color obtained from manufacturer B and were assumed to be because of the resin used by the manufacturer. Nevertheless, additional research will have to be conducted by controlling variables in order to find out the cause. Through this study, we demonstrated that retouching materials for conservation of oil painting differed in their physical properties according to the color and manufacturer. Therefore a conservator should be mindful during the selection and use of materials for retouching oil paintings.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.6
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• pp.261-271
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• 2019

This study was conducted to investigate the effect of aromatherapy on the autonomic nervous system by the inhalation. The subjects of the study were 64 people aged 20 and under 59 years old, 32 in the experimental group and 32 in the control group. Blending oil with Six aroma(Lavender, Bergamot, Mandarin, Lemon, Cedarwood, Roman Chamomile) was applied to the experimental group, and Jojoba oil was applied to the control group for 30min. Before and after the experiment, HRV(TP, VLF, LF, HF, LF/HF) of the experimental group and the control group were compared and analyzed using pulse wave mesuring instrument(uBioClip v70). There was a significant difference between the experimental group and the control group in 3 out of 5 items analyzed TP(p<.05), LF(p<.05), HF(p<.01). In other words, aromatherapy increases the total activity of the autonomic nervous system by enhancing the TP, increases the activity of the sympathetic and parasympathetic nerves, promotes the activity of the heart, Facilitate the activity of the heart. Therefore, if aromatherapy is used steadily in everyday life, it will enable healthy life by positively affecting the autonomic nervous system response.

• Korean Journal of Environmental Biology
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• v.38 no.4
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• pp.603-610
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• 2020

The problem of increased resistance to pesticides is caused by the management of Bemisia tabaci, which depends almost entirely on pesticides, and to solve this problem, we investigated the host preference of B. tabaci among herbal plants to develop a possible attractant for alternative control methods. Experiments were conducted in greenhouse tomatoes at the National Institute of Horticultural Science and Herbal Science in Wanju-gun. Major herbal plants such as lemon balm, chocolate mint, rose geranium, and apple geranium were installed 50cm from the ground and 30cm from the top of the tomatoes, then the density of B. tabaci was investigated. As a result of examining the density of B. tabaci by the location of the herbal plants, it was found that the lemon balm location showed the highest B. tabaci density while rose geranium and apple geranium were rather avoided. These results are expected to be helpful in the development of alternative B. tabaci control methods using herbal plants including attractants, repellents, and trap plants.