• 한국식품영양과학회지
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• 제6권1호
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• pp.61-65
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• 1977

전남산(全南産) 오리고기의 아미노산(酸)을 gas chromatography에 의하여 분석(分析)하여 다음과 같은 결과(結果)를 얻었다. 1. 오리고기의 일반성분(一般成分)은 조단백질(粗蛋白質) $13.61%{\sim}21.19%$, 조지방(粗脂肪) $17.32%{\sim}34.92%$, 회분(灰分) $0.56%{\sim}1.09%$, 수분(水分) $50.91%{\sim}65.72%$로 되어 있다. 2. 오리고기 단백질의 아미노산(酸)은 alanine 6.10%, valine 2.75%, glycine 7.13%, iso-leucine 2.20%, leucine 4.54%, proline 4.90%, threonine 5.80%, methionine 1.15%, hydroxy proline 3.20%, phenylalanine 3.01%, aspartic acid 6.70%, glutamic acid 12.71%, lysine 4.95%, arginine 1.11%, histidine 5.60%, cystine+cysteine 4.40%이며, serine과 tyrosine은 trace로 함유되어 있다. 3. tryptophane을 제외하고 전(全) 필수아미노산(酸)을 정량(定量)하였다.

• 동아시아식생활학회지
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• 제7권3호
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• pp.309-314
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• 1997

밤꽃에 대한 기초자료를 얻기 위하여 밤꽃 중의 화학적인 특성을 조사하였으며, 그 결과는 다음과 같다. 밤꽃에 함유된 총당, 환원당, 조단백질, 조지방 및 회분의 함량은 개화전 시료에서 10.44, 4.91,. 8.80, 1.42 및 0.87%였으며, 개화 후 시료에서는 각각 11.75, 7.04, 7.71, 2.26 및 0.66%이었다. 밤꽃 물추출물의 갈변도는 개화전의 시료가 개화후의 시료보다 높았으며, flavonoids와 nonflavonoids의 함량은 개화전 시료에서 7.05와 0.52%였고, 개화 후에는 2.08과 0.22%이었다. Sucrose, fructose 및 glucose와 같은 유리당의 함량은 개화전 시료에서 2.90, 0.72 및 0.71%였으며, 개화 후에는 2.65, 2.10 및 2.20%였다. 개화전 밤꽃의 주요 아미노산은 threonine, proline 및 cystine이며, 그 함량은 각각 28. 96, 12.49 및 11.43%이었고, 개화후의 시료에서는 aspartic acid 및 glutamic acid로 그 함량이 각각 16.19와 11.9%이었다.

• 대한화학회지
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• 제9권4호
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• pp.201-210
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• 1965

Leuconostoc mesenteroides P-60, Lactobacillus arabinosus 17-5, Streptococcus faecalis R have been successfully used for the quantitative determination of sixteen amino acids in Undaria pinnatifida (Harvey) Suringar hydrolysate by alkaline and hydrolysis for succesive two hours from two to twelve hours, by means of microbiological assay. And thiamine and riboflavin were fluorometrically determinated by thiochrome and lumiflavin in powder (80mesh) of Undaria pinnatifida (Harvey) Suringar. The results were as follows: 1) Arginine contents was the highest in hydrolysate for two hours, but longer the hydrolysis, the more content Undaria pinnatifida was decreased. 2) The adequate contents of other amino acids were obtained by hydrolysis for six hours. 3) Growth check and improve of Lactobacillus were not identified in determination by microbiological assay for Undaria pinnatifida. 4) The following values were obtained in Undaria pinnatifida hydrolysate six hours: asparatic acid 466, arginine 230, lysine 317, histidine 74, isoleucine 242, methionine 202, phenylalanine 256, proline 231, threonine 231, tyrosine 161, valine 415, glycine 302, leucine 414, glutamic acid 625, cystine (5 hrs.) 53 and tryptophan (8 hrs.) 90mg per nitrogen one gram. 5) Protein score was 81 (limiting factor was isoleucine) and essential amino acids pattern was of satisfactory results. And methionine contained was higher than FAO value or milk value. 6) Sulphur contained amino acids (methionine plus cystine) contained in Undaria pinnatifida were 225mg/N-g. That was satisfactory results. 7) Absorption spectrum of wave length were not different 1% HAc from buffer-sol. (pH 6.8) in dilution for determination of riboflavin. Both methods might be suitable. 8) Thiamine and riboflavin contained in Undaria pinnatifida were ($B_1,\;82.51{\pm}1.1){\gamma}/N-g\;and\;(B_2,\;115.29{\pm}1.5){\gamma}/N-g.$.

• Journal of Plant Biology
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• 제17권2호
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• pp.69-83
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• 1974

To elucidate the relationship between chemical structure and biological activity of alantolactone, and also to investigate the relationship between the growth of cells and the respiration of Chlorella pyrenoidosa affected by alantolactone, alantolactone and isoalantolactone were isolated from Inula helenium L., and di-, and tetrahydroalantolactones were prepared by the hydrogenation. At a concentration of 5$\times$10-5M alantolactone, the growth rate of Chlorella was greatly reduced. The viability of cells was also reduced over 50% within 2 hr at a concentration of 2.5$\times$10-4M alantolactone. However, oxygen uptake was increased by 20% over 3 hr. And 14CO2 production from glucose-1-14C, glucose-6-14C and 14C-acetate-U.L. was also increased by alantolactone. Biological activityof alantolactone was significantly reduced by cysteine, reduced glutathione or cystine but not by tryptophan or histidine. It was detected by spectrophotometrically and by TLC that alantolactone was also reacted with thiols except cystine. The solution of alantolactone reached with thiol gave the UV absorption spectrum of $\alpha$-saturated ${\gamma}$-lactone, and most of SH groups were disappeared by the addition reaction. From the reaction mixture of alantolactone and cysteine, a lactone adduct was isolated and purified. Isoalantolactone had shown similar activity as alantolactone, however, it was appeared that di-, and tetrahydroalantolactones were not only inactive biologically but also in vitro. It was concluded that there was no correlationship between increased respiration rate and mortality of Chlorella. During the respiration TCA cycle was activated, however it was uncertain that the activation of EMP or HMP was also appeared. Alantolactone and isoalantolactone were biologically active compounds but others were inactive. The reactivity of $\alpha$-methylene ${\gamma}$-lactone moiety toward SH group was principally responsible for its biological activity in sesquiterpene lactones.

• 한국식품영양과학회지
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• 제13권3호
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• pp.275-284
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• 1984

우리나라 고유(固有)의 발효식품(醱酵食品)인 청국장(淸國醬)은 발효중(醱酵中) 납두균(納豆菌)이 생산(生産)하는 발효작용(醱酵作用)으로 대두중(大豆中)의 단백질(蛋白質)이 peptide와 아미노산(酸)으로 분해(分解)되어 독특(獨特)한 향미(香味)를 생성(生成)하고 동시(同時)에 소화율(消化率)을 높이며 또 제조기간(製造期間)이 짧다는 장점도 가지고 있다. 그러나 청국장(淸國醬)메주 발효중(醱酵中) 질소화합물(窒素化合物), 핵산관련물질(核酸關聯物質) 및 지방산(脂肪酸)등의 변화(變化)를 종합적(綜合的)으로 실험(實驗)한 보고(報告)는 이외로 적다. 그래서 일본산(日本産) Natto로 부터 분리(分離)한 Bacillus natto 균(菌)으로 부터 청국장(淸國醬)메주를 발효(醱酵)시키면서 경시적(經時的)으로 채취(採取)한 시료(試料)에 대(對)하여 질소화합물(窒素化合物), 유리(遊離)아미노산(酸), 구성(構成)아미노산(酸), 핵산관련물질(核酸關聯物質) 및 지방산(脂肪酸) 등의 변화(變化)를 실험(實驗)하여 다음과 같은 결과(結果)를 얻었다. 1. 청국장(淸國醬)메주 발효중(醱酵中) 불용성질소(不溶性窒素)는 발효중(醱酵中) 감소(減少)하였고, PAA 질소(窒素)는 완만한 증가(增加)를 보였다. 그리고 수용성질소(水溶性窒素)는 발효(醱酵) 36시간(時間)까지 일정(一定)한 수준을 유지한다가 그 후(後) 서서(徐徐)히 감소(減少)하는 경향(傾向)이었다. 엑스분질소(分窒素) 및 유리(遊離)아미노산질소(酸窒素)는 발효(醱酵) 48시간(時間)까지 급격(急激)히 증가(增加)하다가 그 이후(以後) 감소(減少)하였으나 암모니아질소(窒素)는 발효중(醱酵中) 계속해서 증가(增加)하였다. 2. 핵산관련물질(核酸關聯物質)은 원료대두(原料大豆)에는 ADP, ATP, AMP 및 inosine의 순(順)으로 그 함량(含量)이 많았고, 발효(醱酵) 48시간후(時間後)에는 inosine 및 hypoxanthine이 증가(增加)하는 반면(反面)에 ADP, ATP 및 AMP는 감소(減少)하였다. 3. 원료대두중(原料大豆中)의 유리(遊離)아미노산(酸)은 17종(種)이 검출(檢出) 동정(同定)되었으며, 함량(含量)이 많은 것은 cystine, arginine, aspartic acid 및 phenylalanine의 순(順)이었고, 총유리(總遊離)아미노산(酸)에 대(對)하여 3% 이하(以下)로 비교적(比較的) 함량(含量)이 적은 것은 methionine, lysine, alanine, glycine, leucine 및 tyrosine였고, threonine 및 proline은 흔적량이었다. 발효중(醱酵中) 계속해서 증가(增加)하는 유리(遊離)아미노산(酸)은 alanine, valine, isoleucine, leucine 및 phenylalanine, 발효(醱酵) 48시간(時間)까지 증가(增加)하다가 그 후(後) 감소(減少)하는 것은 lysine, histidine, arginine, glutamic acid, glycine, methionine 및 tyrosine였고, 그 외(外) 유리(遊離)아미노산(酸)은 증감(增減)이 불규칙(不規則)하였다. 4. 원료대두중(原料大豆中) 특(特)히 함량(含量)이 높은 구성(構成)아미노산(酸)은 glutamic acid, serine 및 proline으로서 이들 3종(種)이 총구성(總構成)아미노산(酸)의 42.7%였고, 함량(含量)이 적은 것은 methionine, cystine, histidine, tyrosine 및 isoleucine였다. 발효(醱酵) 12시간(時間)까지 증가(增加)하다가 그 후(後) 감소(減少)하는 구성(構成)아미노산(酸)은 lysine, histidine, glutamic acid, valine, isoleucine 및 phenylalanine, 발효중(醱酵中) 계속해서 감소(減少)하는 아미노산(酸)은 aspartic acid, proline, glycine, alanine, cystine, leucine 및 tyrosine, 발효(醱酵) 48시간(時間)까지 증가(增加)하다가 그 후(後) 감소(減少)하는 것은 arginine 및 methionine, 증감(增減)이 불규칙(不規則)한 것은 threonine 및 serine였다. 5. 원료대두(原料大豆)의 지방산(脂肪酸)은 8종(種)이였고, $C_{18:2}$ 산(酸)이 52.6%로 가장 많았다. 발효중(醱酵中) $C_{14:0}$ 산(酸) 및 $C_{16:2}$ 산(酸)은 양적(量的) 변화(變化)가 없었고, $C_{20:1}$ 산(酸)은 발효(醱酵) 24시간(時間)까지 증가(增加)하다가 그 후(後) 감소(減少)하였고, 그외(外) $C_{18:0}$ 산(酸), $C_{18:1}$ 산(酸), $C_{18:3}$ 산(酸)은 발효중(醱酵中) 불규칙(不規則)한 변화(變化)를 보였다.

• 생약학회지
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• 제6권3호
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• pp.125-129
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• 1975

The pharmacognostical and pharmacological studies of 'Manryong' were carried out, which has been widely used in Chun-Ra Province, Korea and the following results were obtained. 1) The original plant of the bulb MANRYONG is Erythronium japonicum DECNE. (Liliaceae). 2) The internal structure consists of mostly parenchyma containing numerous starch grains, vascular bundles and substituted fibers. 3) The external surface occurs as a yellowish white and slightly bented ovoidal shape. 4) 'Manryong; contains 11 kinds of free amino acids, such as asparagin, tryptophan, cystine, glutamic acid, threonine, glycine, leucine, proline, histidine, methionine, and alanine. 5) Hemolytic action of the crude saponin isolated from 'Manryong' is weaker than that of digitonin. 6) Effects of 'Manryong' extracts on ceruloplasmin were studied and an antidotal activity of the extracts was found in liver intoxicated with carbon tetrachloride.

• 생약학회지
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• 제16권4호
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• pp.206-209
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• 1985

White needle crystalline compound, mp.\;78{\sim}79$, was isolated from the petroleum ether fraction of the aerial parts of Chenopodium acuminatum. This compound was supposed to be cycloalkane by chemical properties, spectral data and elemental analysis. After extraction with petroleum ether, the methanolic extract of this plant found to contain aspartic acid, threonine, serine, glutamic acid, glycine, cystine, valine, isoleucine, tyrosine, and phenylalanine. Inorganic elements contained in this plant are as following: Mg 4.84%, Ca 9.602%, Zn 1.11%, K 29.104%, Mn 5.124%, Fe 27.039%, Co 0.31%, Pb 0.995%, Na 0.039% and Cu, 0.0076%.

• 미생물학회지
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• 제1권1호
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• pp.19-25
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• 1963

The studies could be summarized as follows: 1. Standard Rf Values were made as Table II for the identification of amino acids. 2. Amounts of free amino nitrogen in eggs were increased about 0.03% (Table IV) while the amounts of total nitrogen (Table III) were increased lower percentage during the ten days of development. 3. Three unknown substances were found newly during the development. 4. Eight ninhydrine positive amino acids were present, in the fresh embryonic eggs, but the numbers increased to eighteen after fifty days of development. 5. Through the development, there were large amounts of glutamic acid, aspartic acid and alanine. 6. After fifty days development, the amount of amides, such as asparagine, glutamine and alanine were increased very large which were very small amount before it and the amount of asparagine were more than that of glutamine. 7. Tryptophane, Cystine , Histidine were detected after 50 days of development. This is very remarkable fact.

• 미생물학회지
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• 제6권1호
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• pp.1-5
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• 1968

This experiment was undertaken the purpose of investigating the difference of the content of free amino acids in the diseased and healthy leaves of the resistance and susceptible rice varieties, to blast by means of paper chromatography. The results obtained are summarized as follows. (1) In the healthy and diseased leaves, the former was founded nine to tell sorts of free amino acids and later was observed eleven. In the both of leaves, alanine and valine were contained in larger amount, and aspartic acid, glycine and arginine were found relatively less in general. (2) In the diseased leaves, the amino acids were increased in quantity, especially glutamine and aspartic acid were remarkable, and cystine were found only in the diseased ones. (3) It seems to that the health leaves in all varieties were observed the amino acid contents, in notably increase and decrease, but in the diseased ones were not changed in amount. Tatacho, susceptible variety was more contained the amount of glutamine and aspartic acid than Zenith, resistance one.

• Journal of Nutrition and Health
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• 제20권6호
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• pp.456-462
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• 1987

Chemical composition, free amino acid and fatty acid composition of wild and cultured cockle clam were studied. 1. The content of crude protein was higher in Anadara suberenata thanthat ini Anadara granosa. The contents of crude protein and ash increased after boiling. 2 Free amino acid composition of Anadara granosa was similar to that of Anadara suberenata. Both glutamic acid and aspartic acid among free amino acid were the most abundant in cockle clam. Next, leucine, arginine and lysine were abundant in order. They all composed of approximately 50%^ of total amino acid content. Whereas the contents of cystine and methionine were poor. 3. In cockle clam the major fatty acids consisted of C16 :0, C18: 0, C18 ;1 and C18:3 in order. The level of C16 :0 was the highest in lipids. The levels of C18 : 0 and C14 :0 were higher in Anadara granosa than those in Anadara suberenata, while the levels of C16 :0, C18 :3 and C16 : 1 were higher in Amadara suberenata than those in Anadara granosa.