• KOREAN JOURNAL OF CROP SCIENCE
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• v.33 no.1
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• pp.87-96
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• 1988

Some climatic factors and quality-ralated chemical properties were compared among conventional late and early transplanting in Korea, and conventional growing in Greece where climate for tobacco growth and quality is quite different from Korea. Precipitations were lowest and sunshine hours were highest for greece planting. Rainfall was 40% or less and the number of sunshine hours was higher by 20% or more in early transplanting than in conventional late planting during the period from 30 days to 80 days after transplanting in Korea. The content of total nitrogen, nicotine, petroleum ether extracts of leaves were much higher in Greece planting than those in Korea planting. The content of volatile organic acids and volatile neutrals were highest with Greece culture, followed by early and late transplanting in Korea. The leaf quality evaluated by price showed the same trends. Ash content and pH level of leaves were considerably lower in early transplanting than late planting. Petroleum ether extracts, volatile organic acids and total nitrogen showed significant positive correlation coefficients with assigned grade price, while ash content showed significant negative correlation coefficients. Quality indices were deviced and applied for the Quality evaluation.

• CELLMED
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• v.4 no.2
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• pp.11.1-11.6
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• 2014

Cinnamomum zeylanicum (C. zeylanicum) is a tropical evergreen tree of Lauraceae family. It is one of the oldest culinary spices known and used traditionally in many cultures for centuries. In addition to its culinary uses, cinnamon also possesses as a folk remedy of many health disease condition including analgesic, antiseptic, antispasmodic, aphrodisiac, astringent, carminative, haemostatic, insecticidal, and parasiticide and memory enhancing property. This study was aimed to assess the acetylcholinesterase and butyrylcholinesterase inhibitory activity of standardized methanol extract of the C. zeylanicum. Gas chromatography - mass spectrometry (GC-MS) and high performance liquid chromatography (HPLC) analysis were done to identify the presence of eugenol as chemical component and support the neuroprotective activity in the extract. Anticholinesterase inhibitory activity of crude methanol extract of C. zeylanicum leaves and cinnamon oil were evaluated by 96-well microtiter plate assay and thin layer chromatography bioassay detection methods. This study revealed that cinnamon oil ($IC_{50}:45.88{\pm}1.94{\mu}g/ml$) has better anticholinesterase activity than methanol extract ($IC_{50}:77.78{\pm}0.03{\mu}g/ml$). In HPLC analysis, retention time of eugenol in cinnamon oil was found to be 15.81 min which was comparable with the retention time (15.99 min) of the reference standard, eugenol. Seven chemical compounds were identified by GC-MS analysis, in which eugenol as an important phytoconstituents. Thus the phytochemicals from C. zeylanicum methanol leaves extract could be developed as potential source of anticholinesterase activity, with particular benefit in the symptomatic treatment of Alzheimer's disease.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1993.10a
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• pp.637-647
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• 1993

Over 40 per cent Indian population needs to be attended for nutritional improvement. Traditional nutritious food resources though abundantly available but presently less used, if incorporated in the diets, can yield low-cost nutritionally balanced diets. The linear programming (LP)model was used for optimization of food resources to satisfy protein -energy requirements of hard working rural poor. Soybean-a highly nutritious food legume-available at reasonably low price was included along with chick -pea and pigeon -pea for comparison .The three cereals predominantly used in Indian diets -rice, wheat and sorghum -and three typical leafy vegetables namely, spinach , drumstick leaves and rajagira (Amaranths paniculantus) leaves were used for optimization . The contribution of food legume was restricted to supply only 50 per cent of daily protein requirement for maximum protein value. The quantities of other food stuffs namely , milk , sugar , tubers etc. were restricted to nati nal per capita availability. the nutrition satisfaction levels in per cent RDA by the model are 149-250 for protein , 51-106 for fat, 134-362 for iron an d143-1158 for Vitamin-A. Quantities of food legumes, cereals and leafy vegetables ranged from 289-601, 3000-3700 and 360-1200 g/day respectively for a reference family of five hard working rural poor. Daily food resources cost ranged from US$ 0.6 to 1.0 for the family. Amongst food legumes, soybean based diet combinations provide maximum nutritional benefits at minimum cost indicating its suitability for wider adoption by hard working poor.

• Korean journal of food and cookery science
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• v.4 no.1
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• pp.47-52
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• 1988

The chemical composition of 13 different Korean green tea products made from various kinds of tea trees and processing methods was analyzed. The distinct changes in the chemical composition noticed by the harvesting time of tea leaves. The content of crude protein decreased and the contents of crude fat and crude fiber increased as the harvesting runs proceeded. The contents of tanic substances and total sugar tended to increase while caffein content decreased as the runs proceeded. The contents of some organic acids reached to the maximum at the second run of harvest. Steamed leaves had higher chlorophyll content than roasted one, and it resulted in the brighter green and more yellow color of steamed tea products.

• Bulletin of the Korean Chemical Society
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• v.33 no.10
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• pp.3461-3464
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• 2012

• Bulletin of the Korean Chemical Society
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• v.34 no.12
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• pp.3859-3862
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• 2013

• Carbon letters
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• v.9 no.2
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• pp.97-104
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• 2008

In the present study Sisal fiber obtained from the leaves of Agave sisalana has been chosen to validate its viability as an adsorbent for the removal of Nickel from aqueous solutions. The material was also surface modified and its effect on adsorption of Nickel was also studied. Agave sisalana fiber was found to be a cheap and effective adsorbent doing away with the need to activate the material therby reducing processing cost. The equilibrium studies indicated that the adsorption capacity of raw fiber and the surface modified fiber was 8.66 and 9.77 mg/g respectively with the Langmuir isotherm describing the adsorption phenomena better than the Freundlich and Temkin isotherm. The adsorption was found to be exothermic from the thermodynamic studies and the kinetics showed that the adsorption phenomena were second order.

• Natural Product Sciences
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• v.15 no.2
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• pp.90-95
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• 2009

Phytochemical investigation of the MeOH extract of the leaves of Nelumbo nucifera resulted in the isolation of five norsesquiterpenes, four flavonoids, two triterpenes and one alkaloid. Their chemical structures were characterized by spectroscopic methods to be (E)-3-hydroxymegastigm-7-en-9-one (1), (3S,5R,6S,7E)- megastigma-7-ene-3,5,6,9-tetrol (2), dendranthemoside B (3), icariside $B_2$ (4), sedumoside $F_1$ (5), luteolin (6), quercetin 3-0-${\beta}$-D-glucuronide (7), quercetin 3-0-${\beta}$-D-glucoside (8), isorhamnetin 3-0-rutinoside (9), alphitolic acid (10), maslinic acid (11), and N-methylasimilobine (12). Norsesquiterpenoids (1-5) and triterpenes (10-11) were isolated for the first time from this plant. Compounds 6 and 10-12 exhibited considerable cytotoxicity against four human cancer cell lines in vitro using a SRB bioassay.

• The Plant Pathology Journal
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• v.16 no.3
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• pp.162-165
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• 2000

Screening of effective fungicides, determination of effective fungicide application time and investigation of the emergence of resistant isolates to fungicides were conducted to establish effective chemical control strategy of gray blight of tea (Camellia sinensis) in Korea. Systemic fungicides, such as bitertanol, were effective for controlling gray blight when the fungicides were sprayed within 3 days after cutting tea leaves for harvest. Sprayed immediately after cutting, contact fungicides such as chlorothalonil were also effective, but control efficacy rapidly decreased with lengthening of the intervals between cutting and spraying. Korean isolates of P. longiseta and P. theae were still sensitive to bitertanol or fluazinam. However, the isolates highly insensitive to copper hydroxide or thiophanate-methyl have already emerged in Korea. Therefore, careful attention should be paid to use of fungicides and spraying programs for the effective control of gray blight of tea in Korea.

• KSBB Journal
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• v.32 no.1
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• pp.1-8
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• 2017

Bamboo is a plant belonging to the Gramineae family, and can be used as valuable bioresources for many industrial applications. Bamboo has some useful properties and having a lot of beneficial uses such as a bamboo ware, agriculture material, building construction material, pulpwood, etc. Bamboo stem has a large amount of active ingredients that those of bamboo leaves. The stem of bamboo can be processed into various biomaterials including cellulose and lignin, and sometimes uses as foods, cosmetics and medicines using stem extracts with polyphenol compounds. For cosmetic applications of bamboo stems, especially, the constituents of bamboo stem are suitable for inner beauty (cosmetic food) products showing antioxidant and UV-protecting activities. This review summaries the recent literature data and discusses the versatile uses of bamboo stem and its extracts mainly for cosmetic application.