• Korean Journal of Medicinal Crop Science
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• v.8 no.3
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• pp.274-282
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• 2000

Physico-chemical characteristics and chemical composition of seed oil of Sapium japonicum were determined by various analysis methods. Physio-chemical characteristics of the extracted oil from fresh seed were specific gravity (0.928), refraction index (1.477), acid value (2.30), saponification number (190.0), and iodine value (126.0). Neutral lipid (93%) in seed oil was identified as major components, followed by glycolipid (4.9%) and phospholipid (1.3%). In GC analysis, nine fatty acids were presented in the seed oil. Among fatty acids, predominant fatty acids were oleic acid (45.8%) and linoleic acid (35.6%). The contents of fatty acids of seed oil somewhat varied with their storage period. Composition of fatty acids from lipid fractions which were isolated on silica open column was investigated. Major fatty acids in three lipid fractions were linoleic acid and linolenic acid. The fatty acid contents of fresh seed oil derived from each lipid fraction were generally high comapred to storage seed oil. From the above results, seed oil of Sapium Japonicum could be useful in cosmetics, detergents and a few pharmaceuticals.

• Korean Journal of Medicinal Crop Science
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• v.25 no.5
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• pp.296-304
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• 2017

Background: Sancho oil extracted from Zanthoxylum schinifolium (Siebold & Zucc) is a useful edible oil that has been in use for a long time, but it is known to be susceptible to rancidity. Sancho oil purification can remove impurities to prevent rancidity. This study was performed in order to improve the quality of sancho oil and enhance its availability throughout the purification process. Methods and Results: Sancho oil extracted in Hadong, Korea was refined via the degumming and deoxygenation processes, following which we examined the changes in the polyphenol content, fatty acid content and antioxidant activity of the oil. Acetic acid was effective for deoxygenation of sancho oil and 2 N NaOH was effective for its deoxidation. The polyphenol content and antioxidant activity were reduced by the purification process. Saturated fatty acids contents did not vary with the degumming and deoxygenation processes, however the content of unsaturated fatty acids were slightly reduced. Conclusions: This study suggests that the process of sancho oil purification used in this study will contribute to the increased use and storage of sancho oil.

• Asian-Australasian Journal of Animal Sciences
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• v.24 no.5
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• pp.587-602
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• 2011

Improved efficiency in the use of natural resources, pragmatic production systems and environmental sustainability, justified by the need for improved land use systems and increased productivity, are discussed in the context of Asian integrated systems, diversification, and issues of sustainability. The importance of these are reflected by serious inadequate animal protein production throughout Asia, where available supplies cannot match current and projected human requirements up to 2050. Among the ruminant production systems, integrated tree crops-ruminant production systems are grossly underestimated and merit emphasis and expansion. As an example, integrated oil palm- based system is an important pathway for integration with ruminants (buffaloes, cattle, goats and sheep), and provides the entry point for development. The importance and benefits of integrated systems are discussed, involving animals with annual and perennial tree crops, integration with aquaculture, the significance of crop-animal interactions, stratification of the systems, production options, improved use of forages and legumes, potential for enhanced productivity, implications for improved livelihoods of the rural poor and the stability of farm households. The advances in research and development in South East Asia highlight demonstrable increased productivity from animals and meat offtakes, value addition to the oil palm crop, sustainable development, and distinct economic impacts. The results from 12 out of a total of 24 case studies concerning oil palm over the past three decades showed increased yield of 0.49-3.52 mt of fresh fruit bunches (FFB)/ha/yr; increased income by about 30%; savings in weeding costs by 47- 60% equivalent to 21-62 RM/ha/yr; and an internal rate of return of 19% based on actual field data. The results provide important socio-economic benefits for resource-poor small farmers. Potential increased offtakes and additional income exist with the integration of goats. Additionally, the potential for carbon sequestration with tree crops is an advantage. The reasons for low adoption of the syatems are poor awareness of the potential of integrated systems, resistance by the crop- oriented plantation sector, and inadequate technology application. Promoting wider expansion and adoption of the systems in the future is linked directly with coherent policy, institutional commitment, increased investments, private sector involvement, and a stimulus package of incentives.

• Proceedings of the Korean Society of Crop Science Conference
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• 1992.05a
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• pp.134-135
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• 1992

• The Korean Journal of Pesticide Science
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• v.20 no.1
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• pp.30-34
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• 2016

To evaluate the efficacy of natural nematicides for the control of root-knot nematode in strawberry greenhouses, commercial essential oils were examined by 24-well culture plate bioassay for their nematicidal activities against second-stage juveniles and eggs of Meloidogyne hapla. Based on the mortality of M. hapla juveniles at a concentration of $125{\mu}g/mL$, the most active essential oil was Alpinia galanga (100%), followed by Carum carbi (22.3%), Eugenia caryophyllata (9.4%), Cinnamonum zeylanicum (7.2%), Mentha pulegium (2.4%), and Foeniculum vulgare (2.1%). Moreover, A. galanga significantly reduced hatching at 7, 14, and 21 days after treatment. The volatile constituents identified in the A. galangal oil were methyl cinnamate (87.4%), 1,8-cineole (4.4%), ${\beta}$-pinene (2.5%), ${\alpha}$-pinene (2.2%), and p-cymene (1.1%), as major constituents. Results of this study show that A. galangal essential oil and its major constituents may serve as an environmental friendly agent of a promising natural nematicide to control Meloidogyne spp.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.48
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• pp.41-48
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• 2003

The number of natural products obtained from plants has now reached over 100,000 and new chemical compounds are being discovered ever year. Medicinal and Aromatic plants and their extracts have been used for centuries to relieve pain, aid healing, kill bacteria and insects are important as the antifungal and anti-herbivore agents with further compounds being involved in the symbiotic associations. Although their functions in plants have not been fully established, it is Known that some substances have growth regulatory properties while others are involved in pollination and seed dispersal. The complex nature of these chemicals are usually produced in various types of secretory structures which is an important character of a plant family and also influenced and controlled by genetic and ecological factors. Detailed anatomical description of these structures ave relevant to the market value of the plants, the verification of authenticity of a given species and for the detection of substitution or adulteration. Volatile oils are used for their therapeutic action for flavoring of lemon, in perfumery of rose or as starting materials for the synthesis of other compounds of turpentine. For therapeutic purposes they are administered as inhalations of eucalyptus oil, peppermint oil, as gargles and mouthwashes of thymol and transdermally many essential oils including those of lavender, etc. With these current trend for using volatile components in essential oil will be increasing in the future in Korea and in the world as well.

• Korean Journal of Medicinal Crop Science
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• v.12 no.6
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• pp.459-462
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• 2004

Essential oil components were analysed in forty seven individual plants of Elsholtzia splendens collected from eight different regions in Korea to identify their chemotypes. Major oil components of chemotype 1 was dihydrotagentone (75%) and naginataketone and elsholtziaketone were not detected at all. Chemotype 2 was naginataketone (NK) type which content was more than 60%. Chemotype 3 had more than 60% of elsholtziaketone (EK) as major volatile oil. EK type and NK type plants selected were maintained stably in their progenies after seed generation. Naginatketone and elsholtziaketone had functional properties such as antioxidation and antibacteria.

• Korean Journal of Agricultural Science
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• v.37 no.3
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• pp.373-376
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• 2010

Peppermint (Mentha piperita L.) belongs to a member of the mint family (Lamiaceae) and is widely used in food, cosmetics and medicines. This study was carried to investigate the variation of essential oil content and its composition during callus subculture of M. piperita. For callus induction from the leaf explant of peppermint, the basal medium was supplemented with various concentrations of 2, 4-D. The best callus induction rate (93%) of M. piperita. was obtained in MS medium containing 2 mg/l 2, 4-D. The induced peppermint callus maintained on Lin-Staba medium were studied during a period of 20th subcultures for the stability of essential oil production. Growth rates of peppermint callus increased during prolonged subculture. However, there was a progressive decrease of essential oil content and unstability of monoterpene productions when callus cultures were serially subcultured.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.558-560
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• 2003

This paper examines the capability of remote sensing technique for detecting and quantifying the foliar nutrients of oil palm crop. Study has been carried out in the Malaysian Palm Oil Board (MPOB) Research Station in Kluang Johore, Malaysia. Result of the study shows a strong relationship between measured foliar nutrient and the spectral reflectance measured using spectroradiometer. Model that has been developed can be used to estimate the nutrient concentration in the oil palm plantation at micro level and also at macro -level using appropriate satellite data.

• Korean Journal of Medicinal Crop Science
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• v.7 no.2
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• pp.115-120
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• 1999

This study was carried out to compare the essential oil and its composition, and estragol content at different growth stages in the local collections of A. rugosa. Estragol was the major constituent in essential oil of all collections tested. Estragol content in essential oil was $82.3{\sim}89.1%$ in leaves, $81.1{\sim}89.2%$ in inflorescence, $72.0{\sim}45.2%$ in stem and there was no significant difference among nine local colletions. At full bloom stage, essential oil content was significantly higher than other growth stages and the highest content of estragol in essential oil was appeared at this stage. Especially, the content of essential oil in the inflorescence of Mokpo collection was 3.3%, which was the highest among the collections. Mokpo and Jindo collections produced much more essential oil and estragol than the other collections both at full bloom and ripening stages.