• 제목/요약/키워드: combined amino acid

검색결과 97건 처리시간 0.022초

녹두나물 성장과정중의 실소화합물과 유리아미노산의 변화에 관한 연구 (Changes of Nitrogen Compouds and Free Amino Acid of Mung-bean Sprout)

  • 김경자
    • 대한가정학회지
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    • 제19권1호
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    • pp.25-31
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    • 1981
  • The changes of various nitrogenfractions and free amino acid composition were investigated at various growing stages. The results are summarized as follows 1) Total nitrogen, water soluble protein nitrogen, and true protein nitrogen were decreased with growth. 2) Free amino acid increased with sprout-growth. the content of free amino acid were about 74.4%(combined Ser, Asp, Arg, Val) after 4 day sprout. It is belived that serine, aspartic acid, arginine and valine play an important role as taste compounds in mungbean sprout. 3) 16kinds of amino acid, including essential amino acids in human nutrition except tryptophan and cystin were quantified.

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잇바디돌김의 함질소 엑스성분조성 및 월별변동 (Extractive Nitrogenous Constituents and Their Monthly Variation of Fresh Laver Porphyra dentata)

  • 박춘규;박철훈;박정임
    • 한국식품영양과학회지
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    • 제30권4호
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    • pp.579-588
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    • 2001
  • 한국 남해안에서 양식생산되고 있는 김류의 함질소엑스성분 조성 및 월별 변동을 구명하기 위하여 1998년 1월부터 4월까지 월별로 전남 장흥군에서 양식된 잇바디돌김, Porphyra dentata 생엽을 매월 1회씩 채취하여 맛과 밀접한 관계가 있는 함질소엑스성분 즉, 엑스분질소, 유리아미노산, 결합아미노산, ATP관련화합물, 4급암모늄염기 등을 분석하여 방사무늬김, P. yezoensis와 비교하였다. 엑스분질소함량은 760~872 mg/100 g(건물)이었다. 유리아미노산은 27~31종이 분석되었으며, 그 총량은 2,404~3,966 mg/100 g(건물)이었다. 함량이 많은 유리아미노산으로서는 alanine, taurine, glutamine, glutamic acid, aspartic acid 등이었다. 결합아미노산은 가수분해 후 16~23종에서 증가하였으며, 유리아미노산 총량의 36.0~112.0% 수준이었다. ATP관련화합물 총량은 73.3~94.4 mg/100 g(2.04~4.43 $\mu$mol/g, 건물)이었다. Be-taine류로서는 homarine과 trigonelline이 모든 시료에서 검출되었고, $\beta$-alaninebetain과 ${\gamma}$-butyrobetaine은 일부시료에서 검출되었다. TMA는 모든 시료에서 확인되었으며, TMAO는 일부시료에서 분리되었다. 잇바디돌김 생엽의 함질소엑스성분 특징은 방사무늬김에서 처럼 유리아미노산과 결합아미노산 함량이 풍부하여 질소분포의 약 90%에 달하는 중요한 맛성분이었으나 그 성분조성의 월별 변동에는 다소 차이를 보여 대부분의 성분들이 1, 3월에 높고 2, 4월에 낮았다. 잇바디돌김은 방사무늬김에 비해 전반적으로 함질소엑스성분 함량이 약간 낮은 수준이었다.

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막장의 아미노酸 組成에 關한 硏究 (Studies on the Amino Acids Composition of Makjang)

  • 신홍대;윤주억
    • 대한화학회지
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    • 제7권1호
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    • pp.6-12
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    • 1963
  • Amino acid composition of Makjang was determined by combined usage of ion exchanged resin and paper chormatography in the following states. a. A fraction soluble in water b. Hydrolysate of the whole Makjang c. Same as a. (p.p.t. formed by tungstic acid or trichloroacetic acid being removed) d. Hydrolysate of c. (T and TCA) By comparing amino acid composition of Makjang with that of its raw material, we found that decomposition of essential amino acids during brewing is slight. From the amino acid composition of a,b,c,d, we discussed the ratio of amino acid liberation during brewing and assumed that Makjang contains peptide-like substances composing of glutamic acid and aspartic acid.

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멸치, 밴댕이 및 까나리의 함질소 엑스성분 비교 (Comparison of Extractive Nitrogenous Constituents in the Raw Anchovy (Engraulis japonica), Big Eyed Herring (Harengula zunasi), and Northern Sand Lance (Ammodytes personatus))

  • 박춘규
    • 한국식품과학회지
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    • 제31권6호
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    • pp.1458-1464
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    • 1999
  • 우리 나라 연근해에서 어획되고 있는 멸치, 밴댕이 및 까나리의 맛 성분조성을 밝히기 위하여 수산물에 널리 분포하고 있는 함질소 엑스성분인 유리아미노산, combined amino acid류, ATP관련 화합물, 4급암모늄 염기 및 구아니시노 화합물 등을 분석하여 상호 비교하였다. 엑스분 질소함량은 밴댕이가 633 mg/100 g으로서 가장 높고, 다음은 멸치로서 601 mg이었으며 까나리는 455 mg으로서 가장 낮았다. 어류 3종에서 $31{\sim}32$종의 다양한 유리아미노산이 검출되었으나, 그 조성은 모두 유사한 경향이었고, 함량이 풍부한 것들로서는 histidine, taurine, alanine, leucine, carnosine, glutamic acid, lysine 등이었다. 그러나 그 함량에는 어종별로 차이가 있어서 밴댕이, 멸치, 까나리에서 각각 1,672 mg/ l00g, 1,416 mg 및 951 mg이었다. Combined amino acid류 함량을 유리아미노산 수준과 비교하면 까나리에서 110%, 멸치에서 84.8%, 그리고 밴댕이에서는 62.4%로서 어종별로 차이가 있었다. ATP관련 화합물은 밴댕이, 멸치, 까나리에서 각각 $6.15{\mu}mol/g,\;4.14{\mu}mol,\;3.81{\mu}mol$로서 어종에 따른 차이가 많았다. Betaine류는 멸치와 까나리에서 glycinebetaine, ${\beta}-alaninebetaine,\;{\gamma}-butyrobetaine$이 그리고, 밴댕이에서는 ${\beta}-alaninebetaine$이 검출되었으나 미량에 불과하였다. TMAO는 까나리에서 265 mg, 멸치 249 mg, 그리고 밴댕이에서는 201 mg이었으며, TMA는 모두 12 mg 이하로서 비슷하였다. Creatine 함량은 밴댕이 242 mg, 멸치 146 mg, 까나리 131 mg으로서 차이가 있었다. 엑스분 중의 질소 분포는 유리아미노산과 combined amino acid류 질소가 가장 높아서 멸치, 밴댕이, 까나리에서 각각 71.1%, 69.0% 및 68.7%로서 유사하였으며, 엑스분 질소의 회수율은 각각 90.8%, 93.2%, 95.0%이었다.

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Compositions of Extractive Nitrogenous Constituents and Their Monthly Variation for Fresh Capsosiphon fulvescens

  • Jung, Kyoo-Jin;Park, Jung-Nim
    • Preventive Nutrition and Food Science
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    • 제15권2호
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    • pp.120-129
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    • 2010
  • To elucidate the composition of extractive nitrogenous components in the fresh Capsosiphons fulvescens cultured off the southern coast of Korea, and to determine the monthly variation of these nitrogenous components, extract samples collected monthly from December to March at Jangheung-gun, Jeonnam Province were analyzed for total nitrogen, free and combined amino acids, ATP and related compounds, betaines, trimethylamine oxide (TMAO) and trimethylamine (TMA). The content of extractive nitrogen was 1,090~1,233 mg/100 g on dry basis. The number of 21~25 ninhydrin-positive substances was detected in the analysis of free amino acids, and their total amount was 3,710~4,788 mg/100 g on dry basis. Among them, free proline, asparagine, glutamic acid, alanine, taurine and glutamine were found to be abundant. The combined amino acids amounted to 1,573~2,121 mg/100 g in total and the total amount of ATP and related compound was 33.8~84.0 mg/100 g ($1.06{\sim}2.46\;{\mu}mol/g$) on dry basis. Betaine, glycinebetaine, $\beta$-alaninebetaine, $\gamma$-butyrobetaine, homarine and trigonelline were detected in most of samples. Levels of free and combined amino acids, ATP and related compounds fluctuated from sample to sample, with their contents higher in December and January and lower in March.

방사무늬김 건제품의 함질소 엑스성분 조성 (Extractive Nitrogenous Constituents of Dried Layer, Porphyra yezoensis)

  • 박춘규;박철훈;박정임
    • 한국수산과학회지
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    • 제34권4호
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    • pp.394-402
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    • 2001
  • 한국 근해에서 양식되고 있는 김류의 함질소엑스성분조성 및 월별변동현상을 구명하기 위하여 1998년 1월부터 4월까지 전남 장흥군에서 양식된 방사무늬김 Porphyra yezoensis을 매월 1회씩 채취하여 건제품으로 가공한 다음 맛과 밀접한 관계가 있는 함질 소엑스성분 즉, 엑스분질소, 유리아미노산, 결합아미노산, ATP관련화합물, 4급암모늄염기 등을 분석하였다. 엑스분질소함량은 $976\~1,196\;mg/100\;g$ (건물)이었다. 유리 아미노산은 $28\~31$종이 검출되었으며, 그 총량은 $5,648\~6,845mg/100g$ (건물)이었다. 함량이 많은 유리아미노산으로서는 alanine, glutamic acid, taurine, phosphoserine. aspartic acid 등이었다. 결합아미노산은 가수분해후 $18\~22$종에서 증가되었으며, 그 총량은 $1,194\~1,406mg/100g$ (건물)이었으며, 유리아미노산총량의 $19.6\sim22.9\%$ 수준으로서 중요한 함질소 엑스성분이었다 ATP관련화합물총량은 $111.6\~195.5mg/100g\;(3.30\~6.00{\mu}mol/g$, 건물)수준이었다. Betaine류는 마른 김에서 homarine이 모든 시료에서 검출되었고, trigonelline은 1월 시료에서만 확인되었다. Glycinebetaine, $\beta$-alaninebetaine 및 $\gamma$-butyrobetaine은 가공과정 중 소실되었다. TMA는 모든 시료에서 검출되었고, TMA는 일부시료에서만 확인되었다. 방사무늬김은 생야을 건제품으로 가공함으로서 유리아미노산은 증가하고 결합 아미노산 함량은 감소되었다. 또한 ATP관련화합물은 증가한 반면 TMAO와 TMA, betaine류는 전반적으로 감소되었다.

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Two combined amino acids promote sleep activity in caffeine-induced sleepless model systems

  • Hong, Ki-Bae;Park, Yooheon;Suh, Hyung Joo
    • Nutrition Research and Practice
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    • 제12권3호
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    • pp.208-214
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    • 2018
  • BACKGROUND/OBJECTIVES: The aim of this study was to evaluate the biological and sleep-promoting effects of combined ${\gamma}$-aminobutyric acid (GABA) and 5-hydroxytryptophan (5-HTP) using caffeine-induced sleepless fruit flies, ICR mice, and Sprague-Dawley rats. MATERIALS/METHODS: Video-tracking analysis was applied to investigate behavioral changes of Drosophila melanogaster. Pentobarbital-induced sleep test and electroencephalogram (EEG) patterns were used for analysis of sleep latency, duration, and quantity and quality of sleep in vertebrate models. RESULTS: Administration of combined GABA/5-HTP could significantly reverse the caffeine induced total distance of flies (P < 0.001). Also, individually administered and combined GABA/5-HTP significantly increased the total sleeping time in the caffeine-induced sleepless ICR mice (P < 0.001). In the caffeine-induced sleepless SD-rats, combined GABA/5-HTP showed significant differences in sleep quality between individual amino acid administrations (P < 0.05). CONCLUSIONS: Taken together, we identified inhibitory effects of combined GABA/5-HTP in locomotor activity, sleep quantity and quality in caffeine-induced sleepless models, indicating that combined GABA/5-HTP may be effective in patients with insomnia by providing sufficient sleep.

발효소시지의 숙성에 따른 풍미성분의 변화 (Changes in Flavor Components during Ripening of Fermented Sausages)

  • 양종범
    • 한국식품영양학회지
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    • 제12권4호
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    • pp.380-386
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    • 1999
  • Fermented sausages inoculated with starter cultures which were combined Lactobacillus curvatus and Staphylococcus carnosus(LCSC), Lactobacillus plantarum and Staphylococcus carnosus(LPSC) were manufac-tured. changes in chemical composition salinity weight loss fatty acids inosine monophosphate(IMP) and hypoxanthine (Hx) and fee amino acids during ripening of fermented sausages were investigated. Due to drying the water content was decreased while the protein and fat contents salinity and weight low were increased during ripening. No significant differences between LCSC and LPSC were found for chemical composition salinity and weight loss. During ripening unsaturated fatty acid contents was dec-reased while saturated fatty acid contents was increased. At the end of the ripening the levels of mon-oenes were slightly higher in the LPSC than in the LCSC. In both treatments IMP contents were dec-reased but no changes were observed in Hx contents during ripening. Due to ripening the increase in total and individual free amino acids were observed and contents of glutamic acid alanine leucine and lysine were greatly increased.

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Paper Chromatogaphy 법(法)에 의한 SH화합물간(化合物間)의 수은(水銀)에 대(對)한 친화력(親和力) 비교(比較) (Affinity of Mercury to SH Compounds Compared by Using the Paper Chromatography)

  • 김영희;이만정
    • 한국식품영양과학회지
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    • 제10권1호
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    • pp.67-76
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    • 1981
  • Paper Chromatography 법(法)으로 아미노산류(酸類)와 이노신산(酸) 및 수은중독(水銀中毒) 치료제(治療劑)인 BAL의 수은(水銀)에 대(對)한 친화력(親和力)의 크기를 비교(比較)하였다. 그 결과(結果) Cysteine Cystine 및 Methionine의 3종(種)의 합류황(合硫黃) 아미노산(酸)은 수은(水銀)과 쉽게 결합(結合)하였으나 다른 아미노산(酸)들과의 결합(結合)은 확인(確認)하지 못하였다. 수은(水銀)은 SH기(基)를 가지는 Sodium thiosulfate 및 BAL과는 쉽게 결합(結合)하였으며 이노신산(酸)과도 쉽게 결합(結合)하였다. 이들 함류황(含硫黃) 아미노산(酸) 류(類)보다 큰 것으로 판단(判斷)되었다.

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국내산 마른 김(Porphyra)의 생리활성 및 아미노산 조성 비교 (Physiological Activities and Amino Acid Compositions of Korean Dried Laver Porphyra Products)

  • 이학증;최종일;최성재
    • 한국수산과학회지
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    • 제45권5호
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    • pp.409-413
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    • 2012
  • The physiological activities and amino acid compositions of dried lavers of Porphyra from the Jangheung, Seochen and Haenam coasts were determined. The ethanol extract of the Haenam dried laver exhibited the greatest 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity (56.1%), ferric-reducing antioxidant potential (FRAP) value(86.5 mM) and total polyphenol content (3.51 ppm) of these dried laver products. In addition, there was a strong positive correlation between the antioxidative activity and total polyphenol content of the laver products, suggesting that polyphenol compounds contribute to the antioxidant capacity in the ethanol extract of dried laver. However, there was no difference among the extracts in terms of cell proliferation activity. Fourteen combined amino acids were identified in oligopeptides from the dried laver products. Of the three extracts, that of the Haenam dried laver contained the highest levels of both free and total amino acids including alanine, glutamic acid, taurine, phosphoserine, and aspartic acid.