• Journal of the Korean Society of Food Science and Nutrition
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• v.25 no.4
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• pp.649-653
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• 1996

This study was carried out to quantitate the proximate composition of free sugars, amino acids, fatty acids, and minerals contents in Jehotang. The analysis of overall chemical components of Jehotang indicates that it contains 22.40% of moisture, 1.31% of crude protein, 1.24% of crude fat, 0.80% of ash and 74.25% of carbohyderate. The pH of the Jehotang was 3.2. The sugar content was relatively high. Among the identified extractable free sugars were 15.3% of fructose, 13.6% of glucose, 0.42% of sucrose, 1.18% of maltose, and a trace of isomaltose. No raffinose, maltotriose and molezitose were detected. In amino acid composition of the Jehotang, leucine was the highest with the content of 9.6mg, followed by arginine, valine, and phenylalanine. The ratio of essential/total amino acid was 40.4%. Fatty acid content, which occupies 1.24%, can be classified into 4 kinds. Major ones, in order of quantity, are oleic acid(52.7%), linoleic acid(28.5%), palmitic acid(14.6%) and stearic acid(4.2%). Among the minerals, the amount of K was the highest with the level of 2430.5ppm, followed by Ca, Na, P, Mg, Fe, Mn, Zn and Cu.

• Korean Journal of Medicinal Crop Science
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• v.10 no.3
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• pp.185-193
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• 2002

This study was done to accept basic data on chemical components in rhizome of native Polygonatum species in Korea. In mineral contents of their rhizome, total nitrogen, potassium, calcium, magnesium and sodium concentration were higher in Polygonatum inflatum, P. humile and P. odoratum var. pluriflorum 1 than the other species in all the sampling dates. P. odoratum var. pluriflorum 1, P. odoratum var. pluriflorum 2 and P. inflatum showed relatively higher iron and mananese contents but P. odoratum var. pluriflorum 1 and P. stenophyllum did in copper content on November 20. Total sugar was acculated in later growth stages, although P. stenophyllum had the highest content but P. lasianthum var. coreanum had the lowest in all the sampling dates. Protein content was the highest in P. lasianthum var. coreanum but the lowest in P. stenophyllum in all the sampling dates. The major amino acids in their rhizomes were arginine followed by glutamic acid, and total and essential amino acid content were abundant in P. lasianthum var. coreanum and P. humile.

• Journal of Mushroom
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• v.14 no.4
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• pp.184-190
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• 2016

This study was performed to determine the optimal condition for Lentinula edodes JMI-10079 mycelium cultivation on the root of Polygonum multiflorum. We also analyzed the proximate composition, total amino acids, and minerals in the root of P. multiflorum cultivated with L. edodes JMI-10079 mycelia. The optimal temperature and pH for L. edodes JMI-10079 mycelium cultivation on the P. multiflorum root were $25^{\circ}C$ and pH 5-6 respectively, whereas the optimal carbon and nitrogen sources were glucose and maltose, respectively. The content of crude protein, crude fat, and ash in the P. multiflorum root cultivated with L. edodes JMI-10079 mycelia was higher than that in the uncultivated P. multiflorum root. The content of crude fiber was the highest in the control. Total amino acid analysis revealed that the contents of total amino acids and total essential amino acids were increased by higher root of P. multiflorum concentration.

• Journal of Life Science
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• v.14 no.1
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• pp.82-90
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• 2004

This study was carried out to analysis the composition of fruit body of Morchella esculenta (MEF) to determine the possibility of medical and edible use. The nutritional compositions of MEF were as follows ; The contnt (g%) of crude fat, carbohydrate, crude protein were 3.8, 43.5 and 29.7, respectively. Potassium concentration in MEF was high up to 3558.0 mg% and Ca, Mg, Fe, Na and Zn were followed. There were 23 amino acids in MEF The content of glutamic acid was high up to 1433.0 mg% and leucine, alanine, arginine valine and theronine were followed. Since MEF contains 25 free amino acids, it will be a favorable food stuff. The content of Vitamin A, Vitamin $B_1$, , Vitamin$B_2$, Vitamin $B_6$, Vitamin C, Vitamin $BD_3$, Vitamin E and Vitamin $K_1$, were 2.23 $\mug%$, 0.13 mg%, 0.07 mg%, 0.27 mg%, 0.17 mg%, 52.27 $\mug%$, 5.26 mg% and 3.23 $\mug%$, respectively. MEF will have a good anti-aging effect due to content of Vitamin C and Vitamin E.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.35 no.5
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• pp.449-463
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• 1990

To obtain the basic informations on quality improvement, seed protein and amino acid composition were analyzed in 460 strains of perilla germplasm. Among the tested strains, total protein content ranged from 17.9% to 28.1 % with the 23.6% of varietal means. Form the experiment, Namji, Sandong, and Eunjin were selected as high protein strains of which content was as high as 28.1%. In protein content, collected strains from Jeonnam province showed highest, and was not significantly different by maturity, but this characteristics showed differences by seed coat color and 1,000 seed weight. The significantly negative correlation was observed between protein content and seed setting ratio. However it was observed that significant and high positive correlation between protein and oil content. A calibration for an Infra-Alyzer 450 using log reflectance readings at 2208, 1982, 1940 and 1722nm could be used without adjustment for the measurment of the protein content in perilla with a standard deviation of differences against micro-kjeldahl of 0.27%. The amino acid composition of perilla was similar to the other oilseed crops, and showed a relatively high lysine and methionine content. Further, amino acid composition of perilla seed was exellently characterized with bal ance and higher than FAO recommendation. Major amino acids were indentified as a glutamic acid and arginine in perilla seed protein.

• Journal of the Korean Society of Food Science and Nutrition
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• v.45 no.4
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• pp.518-523
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• 2016

This study investigated the nutritional components and antioxidant activity of dry bitter melon (Momordica charantia L.). The moisture, crude protein, crude fat, crude ash, carbohydrate, and ascorbic acid contents of dry bitter melon were 6.10%, 3.31%, 1.08%, 2.31%, 87.20%, and 908.84 mg/100 g, respectively. Potassium was the most abundant mineral, followed by Mg, P, Na, Ca, Zn, Cu, and Mn, which means dry bitter melon was an alkali material. Regarding amino acid contents, dry bitter melon was rich in arginine, urea, asparagine, ${\gamma}-aminobutyric$ acid, and alanine. Total polyphenol and total flavonoid contents of dry bitter melon extract were 36.08 mg gallic acid equivalents/extract g and 15.66 mg tannic acid equivalents/extract g, respectively. The $IC_{50}$ value for 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity was 9.81 mg/mL for dry bitter melon ethanol extracts.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.39 no.3
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• pp.278-284
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• 1994

The sulfur amino acid composition in soybean (Glycine max L.) seeds may be an essential characteristic of new cultivars for some animal diets. Variation in seed storage protein among genotypes might make it possible to improve the quality of seed protein by genetically altering seed storage protein composition through plant breeding. This study was carried out to determine if mutant strains have potential for improving seed protein quality in soybean. Ten mutant strains had a distinct characteristic of seed storage protein subunits. Among the mutant strains, the sulfur amino acid compositions(methionine plus cystein) of Keburi(P.I.417016), Keburi(P.I.506817), and P.I.54608-1 were relatively higher than those of the others and were 1.9, 2.1, and 1.8%, repectively, which might be due to low levels of ${\alpha}$, ${\alpha}$', and ${\beta}$ subunits of 7S protein. Therefore, it is concluded that the mutant strains, Keburi(P.I.417016), Keburi(P.I.506817), and P.I.54608-1 appear to be potential materials for a breeding program for improving sulfur amino acid composition, and the others also seem to be possible breeding materials for other uses.

• Food Science and Preservation
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• v.17 no.6
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• pp.820-825
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• 2010

We investigated changes in the quality characteristics of soy sauce made using salts from deep ocean water; such salts are more economic to obtain than sun-dried salt. pH level and buffer action both decreased as fermentation proceeded. The content of the pure extract after 120 d of fermentation was 7.5%(w/w), and increased as fermentation proceeded. Total and amino acid nitrogen levels after 120 d of fermentation were 1.4% and 0.75%, respectively (both w/w). Of the free amino acids (179.8-315.7 mg%), glutamic acid was the most abundant, followed by alanine, lysine, and leucine. The glutamic acid/total free amino acid ratio was 21.0-23.2%. The content of essential amino acids was 78.0-142.3 mg%; this level increased as fermentation progressed.

• Korean Journal of Plant Resources
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• v.9 no.3
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• pp.211-217
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• 1996

As a part of studies on the development of a Gugisuen(Lycium chinense M.), which is one of the unutilization of waste resources, we investigated the composition of fatty acid and amino acid according as picking period and varieties of Gugisuen. The chemical components of Gugisuen were as follows : 1. Proximate composition of Gugisuen were Cheongyang native had the highest contents of crude lipid, crude protein, total sugar, and the contents of crude protein, total sugar, and reducing sugar was the highest picked on June 20. 2. The contents of $P_2O_5$, $K_2O$, CaO, MgO, Cu, and Mn were higher in Cheongyang native than that of other varieties. And mineral contents of Gugisuen picked on May 10 were the highest. 3. The major fatty acids were linoleic, linolenic acids, and these unsaturated fatty acids composed about 50% of total fatty acids. Fatty acid compositions between each varieties were not significant, and those components were the highest in Gugisuen picked on May 10. 4. Eighteen amino acids were identified from Gugisuen, glutamic acid, the highest content was $10.05\sim10.94%$ and these contents increased in the order to aspartic acid > glycine > alanine > leucine > lysine. The contents of serine, arginine, methionine, cystine-2 and isoleucine were higher in late harvest time and glutamic acid and tryptophane were higher in early harvest time.

• Korean Journal of Poultry Science
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• v.34 no.2
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• pp.119-128
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• 2007

The effects of microbial phytase on laying performance, egg quality, and ileal digestibility of nutrients and amino acids were examined at three levels of phytase (0, 300, 600 unit/kg) in 55-wk-old White Leghorn for 4 weeks. Egg productivity tended to increase with supplemental phytase compared to that of control. Daily feed intake of hens fed phytase also increased. Egg shell thickness was not significantly different among the treatments. Haugh unit and yolk color were not statistically different. However, egg shell breaking strength was high at phytase treatment. Excretion and absorption of nitrogen were no difference among all treatments, but those of phosphorus was higher in the phytase treatment than control. The digestibility was high at crude fiber, crude ash, calcium and phosphorus in nutrients, at lysine, methionine and phenylalanine in essential amino acids, and alanine, cystine, glutamic acid, glycine and tyrosine in non-essential amino acids. In conclusion, supplemental microbial phytase in laying hens diet may help to improve egg production and to decrease P of feces. But, further studies were needed to investigate on the digestibility.