• Journal of the Korean Chemical Society
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• v.54 no.6
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• pp.680-686
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• 2010

Inhibition effects of alanine(Ala), asparagine(Asn), aspartic acid(Asp), glutamine(Gln) and methionine(Met) on the corrosion of copper were investigated in aerated artificial sea water. Amino acid adsorption process in copper surface can be explained by Temkin logarithmic isotherm due to the interaction between the adsorbed molecules. The inhibition efficiency for the copper corrosion depended on the concentration of amino acids.

• The Inventors News
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• no.8
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• pp.2-2
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• 2003

한국, LCD 산업 특허로도 정복한다 - 진양제약 백혈병 치료법 특허 출원 - 국내기업 디지털TV 기술 원천특허 소수 - `아스파라긴 소주` 특허 분쟁 벌어졌다 - 새로 태어나는 대학 특허 - 보안기술 특허출원 감소세로 전환

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.601-606
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• 2023

The edible sweetener aspartame is formed from the synthesis of asparagine, one of the amino acids, and phenylalanine. It is a protein ingredient that produces sweetness 200 times higher than sucrose, and is used as a diet product because it is a substance that can replace sugar. Although the effects on animals and humans have been well studied, no studies have been conducted on plant metabolism. In this study, the effect of aspartame metabolism was tested using germinated onion, bean sprouts, and Kalanchoe. The three types of plants with germinated roots showed rapid growth in the early stage of treatment with 1mM aspartame, and showed a nutrient supply effect due to the effect of amino acids, which are constituents. However, when treated for 4 weeks, symptoms similar to lateral roots appear in the form of lignification in onions, the effect of quickly withering is seen in bean sprouts, and senescence of roots appears in 12-week-old Kalanchoe. All of them show accelerated aging after the growth phase. This shows that, among the two amino acids, asparagine is related to auxin generation that induces rapid growth, and it is thought to be the result of lignification due to the effect of phenylalanine.

• Journal of the Korean Chemical Society
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• v.6 no.1
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• pp.84-87
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• 1962

A new peptide was isolated from an edible brown algae "Undaria pinnatifida" by both two dimensional and ion-exchange resin chromatographies. The peptide was composed of three amino acids, glutamic acid, alanine and aspartic acid.

• KSBB Journal
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• v.15 no.1
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• pp.96-99
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• 2000

Liposome-amino acid conjugates were prepared using phopholipid (dipalmitoylphosphatidylcholine (DPPC) or distearoylph-osphatidylcholine(DSPC)) and hydrophobically modified amino acids (glutamic acid(glu), glutamine(gln) or asparagine(asn)). The size of liposomes was about 100 nm. According to the glucose-induced turbidity changes, liposomes composed of DPPC and glutamic acid have higher glucose binding affinity than liposomes of DPPC-glutamine or DPPC-asparagine. Also, the liposomes were more stable in terms of aggregation or fusion than the others (DPPC-glutamine, DPPC-asparagine and DSPC-amino acids). As a rdsult, stable liposomes with an affinity for glucose could be prepared with DPPC and glutamic acid.

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2012.03a
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• pp.68-68
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• 2012

고사리는 다년생 양치식물로 예부터 선조들이 즐겨먹던 산채의 일종이다. 고사리에 비타민$B_1,B_2$, C뿐만 아니라 아스파라긴과 글루타민과 같은 성분도 포함된 것으로 밝혀지면서 최근 그 활용가치가 높아지고 있다. 고사리의 재배는 1996년부터 꾸준히 증가하여 현재 1252.8ha(2010년기준)에 이르고 있다. 고사리의 채취는 4월중순 ~ 5월초순에 이르며 어린 순만을 채취하여 식용으로 사용하고 채취시기 후 재배고사리 성채의 줄기와 잎은 50~100cm의 높이로 자라게 내버려두었다가 가을이 되면 저온이나 서리로 인해 갈변하여 일년생을 마치고 있는 실정이다. 이에 본 연구는 재배고사리 채취시기 이후 7,8,9월에 재배고사리 부산물인 줄기와 잎을 채취하여 염액을 추출하고 KS K 0905 표준면직물을 활용하여 농도변이 100%, 200%, 300%, 400%, 500%별로 면직물의 염색성을 살펴보았으며 염색된 직물의 $L^*$, $a^*$, $b^*$값과 먼셀값, K/S값을 분광광도계를 사용하여 측정하였다. 또한 재배고사리 부산물 색소의 특성을 알아보기 위해 추출액을 혼합하여 동결건조하고 분말화한 다음 TLC분석에 의해 그 성분을 확인하였다.

• Journal of the Korean Chemical Society
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• v.31 no.5
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• pp.457-463
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• 1987

The total synthesis of insulin A chain (1-21) with properly protected sulfhdryl groups of three cysteins for the correct intra and inter disulfide bond formation has been accomplished on 2-bromopropionylated 2% DVB-styreneresin support employing manually operated rotary vessel. The sulfhydryl groups of cysteins were protected with acetamidomethyl, benzyl, and benzhydryl respectively. Glutamine and asparagine were attached to the peptide chain by active ester coupling, all other amino acids were coupled with DCC/HOBT. The synthesized peptide was purified by DEAE Sephadex A-25 and gel filtration Sephadex LH-20. The final product was found to be homogeneous by HPLC, electrophoresis, and amino acid analysis. The overall yield of the pure isolated peptide was 6%.

• Korean Chemical Engineering Research
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• v.47 no.2
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• pp.213-219
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• 2009

Crystallization experiments were performed by addition of various amino acids into biomineralization mixture of calcium carbonate. Liquid-liquid reaction of calcium carbonate was investigated by mixing calcium chloride, sodium carbonate and additives such as silk fibroin, asparagine, aspartic acid, glutamic acid and glycine. Also, the effects of reaction time, pH and solution concentration were observed. Analysis of crystals was done by FE-SEM, XRD, FT-IR equipments. FE-SEM was used in order to analyze morphology and crystal size. XRD was used to measure peak intensities and presence of $CaCO_3$ crystal. Two kinds of crystals were confirmed by FT-IR spectrum. Crystal distribution with reaction time was identified with measured peak areas of XRD and FT-IR data.

• Korean journal of food and cookery science
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• v.30 no.6
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• pp.785-791
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• 2014

The antioxidative activities of beverages with water or ethanol extracts from Maegmundong (Liriope platyphylla) were investigated with free amino acid and mineral analysis, as well as saponin, total phenolics and flavonoid determination. Antioxidative activity was evaluated by electron donating ability and ABTS radical scavenging activity. There was only a small difference between water extract beverages and ethanol-extract beverages with respect to their electron donating ability and ABTS radical scavenging activity, although the total saponin, total phenolics and flavonoid were found to be greater in the ethanol extract beverages than in the water extract beverages. Three major free amino acids of the Magemundong beverages with water- or ethanol extract were asparagine (58.30, 60.68 mg%), methionine (15.10, 13.95 mg%, respectively) and proline (12.31, 14.00 mg%, respectively). The most abundant mineral in the Maegmundong beverage with water and ethanol extract was potassium (238.68, 244.32 mg%, respectively).

• Korean Journal of Food Science and Technology
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• v.52 no.1
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• pp.67-74
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• 2020

In this study, various constituents and biological activities of different parts of asparagus were analyzed and compared. The Ca content was high in the leaves, K was significantly high in the top 25 cm of the spear, and Fe and Na were significantly high in the roots. The ascorbic acid, rutin, total polyphenol, and total flavonoid contents were high in the leaves, and the asparagine and glutathione contents were significantly high in the top 25 cm of the spear and roots, respectively. The bottom 5 cm of the spear had the highest saponin content compared with all other parts. The DPPH and ABTS radical scavenging activities were the highest in the leaves. The bottom 5 cm of the spear had the highest α-amylase inhibitory activity, whereas the stem showed the highest anti-inflammatory activity. These results suggest that the usually inedible parts of asparagus may be highly valuable as high-quality functional components owing to their antioxidative and anti-inflammatory activities.