• 약학회지
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• 제8권2호
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• pp.48-53
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• 1964

At the different growing stages of Fagopyrum esculentum Moench planted at the green house and out doors, the contents of free amino acids in the whole plants,were determined quantitatively by spot-extract colorimetric method (J. Awapara method) using the chromatograms obtained by the ion-exchange resin and paper chromatographic method. And the contents of carbohydrate in the whole plant were determined by Bertrand method. The results were summarized as follows. 1. Almost same kinds of free amino acids were detected in the both plants. 2. Concentrations of most amino acids was increased progressively during growth; further growth was accompanied by decreased concentrations. 3. Rate of growth and increasing of total amino acid content of green house plant is greater than that of out dorrs plant. 4. At the same stages of gwoth, total free amino acid content of green house plant is higher than that of out doors plant but sugar content is lower. 5. There was rapidly increasing of sugar content and decreasing of total free amino acid content except asparagine during mature of seeds.

• 한국식품과학회지
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• 제8권3호
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• pp.129-135
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• 1976

대맥(大麥) 16개(個) 품종(品種)(단백질함량(蛋白質含量) 최고(最高) 15.4%에서 최저(最低) 6.1%)의 정맥중(精麥中) amino산(酸)의 조성(組成)과 이들 상호간(相互間) 및 이들과 단백질(蛋白質)과의 상관(相關) 관계(關係)는 다음과 같았다. 1) 제한(制限) amino 산(酸)은 lysine 이었으며 threonine과 tyrosine이 적고 leucine과 phenylalanine이 특히 많은 편이며 필수(必須) amino산(酸) 총량(總量)은 많은 편이다. 2) 단백질(蛋白質)은 단백질당(蛋白質當) amino산(酸) 함량(含量)과의 상관(相關)에서 lysine, arginine, total basic amino acid와 1%수준에서 threonine, alanine 및 aspartic acid와 5%수준에서 유의부상관(有意負相關)을, phenylalanine과 1%수준에서 proline, cystine과 5%수준에서 유의정상관(有意正相關)을 갖는다. 3) Lysine은 arginine 및 aspartic acid가 유의정상관(有意正相關)을 보이므로 대맥(大麥)에서도 aspartic acid가 lysine 대사에 관련됨을 시사하며 다수성(多收性) 품종(品種) 또는 다비조건(多肥條件)은 aspartic acid pool을 상대적으로 감소시킬 가능성이 있고 그 결과로 lysine이 적어지는 것같다. 4) Lysine은 색소결합능(色素結合能)(Dye binding capacity)과 유의정상관(有意正相關)을 보였다. $(r=0.7377^{**})$ 5) Tryptophan은 histidine, 염기성 amino산총량(酸總量) 및 arginine 과만 유의정상관(有意正相關)을 보였다. 6) 필수(必須) amino산(酸) 중(中) lysine, tryptophan, threonine, valine은 같이 증감하며 함황(含黃) amino산(酸)과 방향성(芳香性) amino산(酸) 및 isoleucine, leucine은 이들과 반대로 증감한다.

• 한국수산과학회지
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• 제46권4호
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• pp.337-342
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• 2013

Porphyra yezoensis is potentially an excellent source of dietary fiber, amino acids, and eicosapentaenoic acid (EPA) because this red seaweed is available in large quantities and is rich in polysaccharides, proteins, and n-3 fatty acids. This study determined the insoluble dietary fiber (IDF), soluble dietary fiber (SDF), neutral detergent fiber (NDF), acid detergent fiber (ADF), amino acid, and fatty acid contents of P. yezoensis harvested monthly from November 2011 to March 2012. The total dietary fiber (TDF) and IDF contents ranged from 27.2-34.9% and 18.5-26.9%, respectively, and were greater in March than November. The SDF content ranged from 4.9-8.4% and did not differ significantly during growth. Galactose and 3,6-anhydro galactose were the major sugars in IDF and SDF. The higher levels of galactose and 3,6-anhydro galactose in IDF might be due to associated porphyran-type polysaccharides. Mannose and xylose were also major sugars in IDF. The total amino acid contents decreased gradually from November to March. The total amino acid composition of Porphyra was dominated by alanine, glutamic acid, arginine, and aspartic acid. No significant changes in the fatty acid profile were observed throughout the study period. The dominant fatty acid during all seasons was EPA, which comprised as much as 50% of the total fatty acid content.

• 한국버섯학회지
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• 제18권1호
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• pp.107-114
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• 2020

본 연구는 국내에서 수집한 15종의 야생버섯류를 식용가능 및 약용가능, 식독불명 또는 독버섯으로 분류하여 아미노산 성분함량을 분석하였다. 식용가능한 야생버섯들의 총 아미노산 성분함량의 범위는 866.4 ~ 1,220.5 mg/kg이었으며, 필수 아미노산의 총 함량은 301.4 ~ 490.2 mg/kg이었다. 그 중 흰우단버섯(OK811)에서 다량의 류신(Leu), 페닐알라닌(Phe), 시스테인(Cys), 글루탐산(Glu) 함량을 보이며 식용가능한 야생버섯류 중에서 총 필수 아미노산 함량이 가장 높았다. 약용가능한 버섯류의 총 아미노산 성분함량의 범위는 802.6 ~ 1,233.7 mg/kg이었으며 필수 아미노산 총 함량의 범위는 263.5 ~ 412.8 mg/kg이었다. 그 중 간버섯속(OK1071)의 총 아미노산 및 필수 아미노산 함량이 약용가능한 야생버섯류 중에서 가장 높았다. 특히 비필수 아미노산 성분인 시스테인(Cys)은 204.1 mg/kg가 검출되어 약용가능 야생버섯 뿐만 아니라 식용가능 야생버섯류에 비하여 훨씬 높은 함량을 나타냈다. 독버섯 또는 식독불명 버섯류의 총 아미노산 함량 범위는 681.8 ~ 1223.4 mg/kg 이었으며, 필수 아미노산의 함량의 범위는 229.1 ~ 442.8 mg/kg이다. 독버섯으로 알려진 노랑다발(OK826)은 이들 버섯류 중에서 가장 높은 총 아미노산 함량을 보였으며, 알기닌(Arg)은 109.2 mg/kg로 식용 또는 약용가능한 버섯류들에 비하여 높게 검출되었고 페닐알라닌(Phe)은 120.6 mg/kg로 약용가능한 야생 버섯류들에 비하여 높게 나타났다. 본 연구결과는 향후 야생버섯을 이용한 신품종 또는 산업적 이용 등을 위한 우수 버섯자원 선발에 필요한 기초자료로 활용하고자 한다.

• 한국자원식물학회지
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• 제17권1호
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• pp.35-40
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• 2004

쪽파의 잎과 인경, 2,4-D 0.5, 1.0mg/L가 첨가된 MS배지에서 배양된 캘러스로부터 아미노산 분석과 항산화활성 을 분석하였다. 총아미노산 분석의 함량은 자연조건상태의 잎에서는 59.779 mg% 함유하였으나 2,4-D 0.5mg/L가 첨가된 배지에서 배양된 캘러스에서는 73.725 mg%를 함유하였으며 그 가운데 Glutamic acid가 26.555 mg%로서 가장 높게 나타났다. 총아미노산 함량에 대한 필수 아미노산의 함량 비율은 자연조건상태의 인경부분이 39.462 mg%를 함유하였고, 2,4-D 0.5mg/L가 첨가된 배지에서 배양된 캘러스에서는 13.072 mg%를 함유하고 있었다.

• 한국해양바이오학회지
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• 제10권1호
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• pp.18-25
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• 2018

Chlorella is quantitatively and qualitatively high in protein with balanced essential amino acid profiles, vitamins and minerals. ${\gamma}-Aminobutyric$ acid (GABA) is broadly distributed in nature and fulfills multi-physiological functions including effect such as a health-promoting functional compound. To improve the GABA production, Chlorella protothecoides were grown through the modified mixtrophic culture medium containing 2L of sterilized bristol medium with 0.01% urea and 4.0% glucose in a 5L fermenter. The results showed that nineteen kinds of amino acid including GABA at C. protothecoides sample were analyzed using high performance liquid chromatography (HPLC). Glutamic acid in total concentration (%) of amino acid is the most abundant amino acid (33.10%), followed by alanine (20.48%) and GABA (17.48%). Three amino acids including GABA were responsible for more than 70% total concentration in C. protothecoides sample including eight essential and nine non-essential amino acids: aspartic acid, asparagine, serine, glutamine, histidine, glycine, threonine, arginine, tyrosine, valine, methionine, tryptophan, phenylalanine, isoleucine, leucine, lysine. As a result of this experiment, it is expected that Chlorella will be developed to a critical product having high value as, GABA, functional food materials.

• 한국조리학회지
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• 제23권7호
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• pp.42-49
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• 2017

This study was conducted to determine the nutritional value of domestic cherry tomato varieties (Summerking, Qutiquti, and Minichal). The levels of amino acids, amino acid derivatives, and ${\gamma}-aminobutyric-acid$ (GABA) were analyzed using ion chromatography. In domestic cherry tomatoes, eighteen free amino acids were found including L-glutamic acid (L-Glu), L-glutamine (L-Gln), and L-aspartic acid (L-Asp). L-Glu was the most abundant amino acid, ranging from 1,533.17 mg/100 g to 1,920.65 mg/100 g (dry weight). The next abundant amino acids were L-Gln, ranging from 784.68 mg/100 g to 1,164.36 mg/100 g and L-Asp, ranging from 320.73 mg/100 g to 387.22 mg/100 g. Domestic cherry tomatoes contained eight essential amino acids except tryptophan and the total essential amino acid content was 297.30~432.43 mg/100 g (dry weight), which was 8.92~10.61% of total free amino acid. Several amino acid derivatives were found: L-carnitine (L-Car), hydroxylysine (Hyl), o-phosphoethanolamine (o-Pea), phosphoserine (p-Ser), ${\beta}-alanine$ (${\beta}-Ala$), N-methyl-histidine (Me-His), ethanolamine ($EtNH_2$), and L-citrulline (L-Cit). L-Car, transporting long-chain fatty acid into mitocondrial matrix, was the most abundant amino acid derivative in all domestic cherry tomatoes. A high level of GABA (313.18~638.57 mg/100 g), known as a neurotransmitter, was also found in all three domestic cherry tomatoes. These results revealed that domestic cherry tomatoes have a good balance of nutrient and bioactive compounds. Therefore, cherry tomatoes can be used as a functional food material.

• 대한가정학회지
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• 제23권1호
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• pp.25-31
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• 1985

This study designed not only to elucidate free amino acid, fatty acid composition and mineral content in dried alaska pollack but also to examine calcium, magnesium, poassium and sodium contents in its cooking broth according to each boiling time such as 2.5, 5, 10, 20, and 30 minutes. RESULTS : 1. Glutamic acid in dried alaska pollack was the most abundant free amino acid and was followed in order of aspartic acid, lysin, leucine and histidine. They composed of 50.95% of the total amino acid contents. 2. In dried alaska pollack the most abundant fatty acid was palmitic acid. Essential fatty acid content was 26.57% of the total fatty acid. 3. The calcium, magnesium, potassium and sodium contents in dried alaska pollack showed 10.721 mg%, 9.235mg%, 4072.5mg% and 2299.8% respectively. The amount of magnesium and potassium in cooking broth arrived at the highest level when 20 minute boiling was undertaken and the quantities of magnesium and sodium were the highest when 30 minute boiling was made.

• 한국환경과학회지
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• 제23권2호
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• pp.165-170
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• 2014

Despite abundant nutritions, krill is barely used for human consumption. The objective of this study was to investigate the nutritional component and amino acid composition of krill and further utilizes it for food resource. Proximate compositions of krill meal were consisted of crude protein 58.85%, ash 13.89%, crude fat 12.45%, carbohydrate 11.01% and moisture 3.80%. The amount of total amino acid was 54.74 g%, and the major amino acids were glutamic acid (7.71 g%), aspartic acid (6.20 g%), leucine (4.72 g%), lysine (4.41 g%), arginine (6.49 g%) and alanine (3.25 g%), respectively. Total essential amino acid content was 21.87%, and the major amino acids were leucine (4.72 g%), lysine (4.41 g%) and isoleucine (2.90 g%), respectively. Content of total free amino acid in krill meal was 20224.30 mg/kg, and the major free amino acids were taurine (4501 mg/kg), arginine (3130.60 mg/kg), proline (2302.90 mg/kg), alanine (2088.10 mg/kg), glycine (1606.40 mg/kg) and lysine (1197.40 mg/kg). Especially, taurine was the most abundant of all free amino acids. Thus, these data indicate that krill seems to be abundant protein source food.

• 한국식품영양과학회지
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• 제23권6호
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• pp.933-938
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• 1994

A study was amino acid contents by heating conditions of mackerel, pacific saury , yellow croaker, and brown sole investigated. In fresh fishes, total amino acid contents showed higher amount in brown sole and yellow croaker, than those of pacific saury and mackerel. The amino acid contents among the tested samples were higher Glx , leucine, lysine and arginine in order. During heating of samples the amino acid contents decreased. There appeared to be a proportional relationship of the heating temperature to decrease of amino acid. The amino acid contents of steamed samples significantly decreased than those of others. During warming and rewarming samples after storage at 4$^{\circ}C$ for 24 hours , amino acid contents slightly decreased.