• 한국식품저장유통학회지
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• 제10권4호
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• pp.488-492
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• 2003

본 연구는 우리나라 전역에 걸쳐 자생하고 있는 생강나무잎을 식품학적 연구의 일환으로 식품으로 이용하고자 여러가지의 방법에 따라 제조한 차의 환원당, 유리당 및 아미노산 등의 변화를 조사하였다. 생강나무잎차의 유리당은 fructose, glucose, sucrose, maltose 4종의 유리당이 동정되었으며, 덖음차에서 유리당 함량이 가장 높았다. 유리 아미노산의 함량은 glutamic acid, aspartic acid, asparagine, glycine 등이 대체로 함량이 높았으며, 특히 덖음처리한 생강나무잎의 유리아미노산 함량이 111.6 mg/100g(덖음차), 101.5 mg/100g(찐후덖음차)로 가장 높았다. 또한 아미노산 유도체는 phosphoserine, $\alpha$-aminobtyric acid, $\beta$-aminobutyric acid, anserine 등은 함량이 높았으며, 제조방법에 따른 뚜렷한 변화는 없었다.

• 동아시아식생활학회지
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• 제27권2호
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• pp.159-167
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• 2017

In this study, quality characteristics of yakju fermented with byeo-nuruk prepared using rice, wheat, and water were investigated. Five different mixture ratios were considered for byeo-nuruk preparation. A comparative analysis of commercial yakju and byeo-nuruk yakju was also performed. The results showed no significant differences in pH, total acidity, and total soluble solids of byeo-nuruk yakju immediately following fermentation. The byeo-nuruk yakju alcohol content increased with increasing wheat proportion. Lactic and succinic acid were the major organic acids of byeo-nuruk yakju, and the major volatile components were isoamyl alcohol and linalool. Yakju prepared using material D had the highest volatile component content and high preference evaluation scores for taste and overall acceptability. Compared to commercial yakju, byeo-nuruk yakju had less total acidity, soluble solids, and volatile acids, whereas its pH level and amino acid content were higher. No significant differences were observed between commercial yakju and byeo-nuruk yakju in terms of sensory evaluation.

• 대한유전성대사질환학회지
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• 제15권2호
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• pp.65-71
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• 2015

Since the secretion of specific chiral isomers in urine (or plasma) is very crucial to diagnose some inborn metabolic disorders, clinical application of dual column achiral differential method has been performed for the absolute configuration of chiral compounds. Extracted from the acidified urine with diethyl ether, carboxylic functional group of organic acid (stereoisomers of the volatile) was derivatized with (-)-menthylation or (S)-(+)-3-methyl-2-butylation and followed by O-trifluoroacylation. Each of the enantiomers was accurately separated from the library matched double column (achiral) with a retention index (I). In various inborn metabolic disease urines, absolute chirality was identified correctly in the urine (10 patients) with inborn metabolic disease (including secretion of D, L- lactic acid, D, L-3-hydroxybutyric acid, and D, L-2-hydroxyglutaric acid). In this study, we identified and isolated the volatile diastereomer as a useful diagnostic marker, this successful application to urine specimens may be useful for diagnostic classification of inherited metabolic disorders.

• 신재생에너지
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• 제5권4호
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• pp.80-85
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• 2009

The effects of various organic wastes on anaerobic fermentative hydrogen production were studied using enriched mixed microflora in batch tests. Rotten fruit, corn powder and organic wastewater enriched with sulfate (up to 1,000 mg/L) were used for experiments. Maximum hydrogen production (547.1 mL) was observed from rotten apple with initial substrate concentration of 132.2 g COD/L. The experimental result on sulfate enriched organic wastewater indicated that hydrogen production is not adversely influenced by relatively high sulfate concentration. Residual sulfate content remained at 96-98 % after 75 hours of reaction, which showed that no major sulfate reduction was occurred at pH 5.3-5.5 in the reactor. The volatile fatty acid (VFA) fractions produced during the reaction was in the order of butyrate > acetate > propionate in all experiments. The results of this study would be useful for controlling the conditions on fermentative hydrogen production using different feedstocks.

• 한국식품저장유통학회지
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• 제7권2호
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• pp.189-194
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• 2000

To study the potential of the Zanthoxylum schinifolium and Z. piperitum leaves, as raw materials for functional food and medicine, apart from male and female, chemical components were carried out. Among general components of sancho and chopi leaves, moisture and crude protein were higher sancho leaf than chopi leaf, but total sugar and crude fat were higher chopi leaf than sancho leaf and the components of major minerals were K, Ca, Mg and Na. Among free sugars, glucose(0.24% and 0.21%) and sucrose(0.19% and 0.27%) were the highest contents in sancho and chopi leaves(male and female), respectively. The organic acid were isolation and identification as malic acid and citric acid, citric acid is higher than malic acid. The total amino acid of sancho and chopi leaves contained proline and glutamic acid in male and female sancho and female chopi leaves, glutamic acid and aspartic acid in male chopi leaf highly in order. The fatty acid contents of four samples were high 15.16%, 9.76%, 8.78% and 9.29% of linolenic acid, respectively. Among many volatile compounds, limonene(13.25% and 19.16%) and citronellal(34.37% and 29.66%) were predominant flavor compounds in sancho and chopi leaves(male and female), respectively.

• 한국식품영양과학회지
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• 제24권1호
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• pp.141-146
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• 1995

본 연구의 목적은 이온음료 제조를 위한 동치미 최적 담금 조건을 설정하고자 각 담금 조건 소금농도 2.0, 2.4%, 숙성온도 0.5, $10^{\circ}C$에 따른 동치미액의 성분 분석을 행하였다. pH 감소속도 및 총산도는 동치미의 숙성온도가 높을수록 빠른 증가경향을 나타내었으며 유기산은 lactic acid, citric acid, malic acid가 검출되었고, 그 중 lactic acid 생성량이 가장 많았으며 succinic acid는 $0^{\circ}C$ 숙성 말기에 미량 검출되었다. 젖산균은 염도에 관계없이 숙성초기에 증가하다가 감소하는 경향을 나타내었고 젖산균이 증가하는 기간에 lactic acid 함량도 증가하는 경향을 나타내어 젖산균수와 lactic acid 함량 변화는 일치하는 경향을 보여주고 있다. 휘발성 성분은 3-methyl pentane, ethyl thioethene, 2,3-diaza-indolizine, dimethyl disulfide 등으로 추정되었다. 이온 음료 제조를 위한 최적 담금 조건은 비휘발성 유기산이 최대로 검출되는 최적 숙기인 pH 4.2~3.9, 산도 0.1~0.4에 이르는 동치미로 $0^{\circ}C$에서 24~29일, $5^{\circ}C$에서 9~12일, $10^{\circ}C$에서 16~22 숙성시킨 동치미를 최적 담금조건으로 설정하고자 한다.

• Journal of Microbiology and Biotechnology
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• 제26권10호
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• pp.1755-1764
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• 2016

The application of Bacillus sp. in the biological control of plant soilborne diseases has been shown to be an environmentally friendly alternative to the use of chemical fungicides. In this study, the effects of bioorganic fertilizer (BOF) fortified with Bacillus amyloliquefaciens SQY 162 on the suppression of tomato bacterial wilt were investigated in pot experiments. The disease incidence of tomato wilt after the application of BOF was 65.18% and 41.62% lower at 10 and 20 days after transplantation, respectively, than in the control condition. BOF also promoted the plant growth. The SQY 162 populations efficiently colonized the tomato rhizosphere, which directly suppressed the number of Ralstonia solanacearum in the tomato rhizosphere soil. In the presence of BOF, the activities of defense-related enzymes in tomato were lower than in the presence of the control treatment, but the expression levels of the defense-related genes of the plants in the salicylic acid and jasmonic acid pathways were enhanced. It was also found that strain SQY 162 could secrete antibiotic surfactin, but not volatile organic compounds, to suppress Ralstonia. The strain could also produce plant growth promotion compounds such as siderophores and indole-3-acetic acid. Thus, owing to its innate multiple-functional traits and its broad biocontrol activities, we found that this antagonistic strain isolated from the tobacco rhizosphere could establish itself successfully in the tomato rhizosphere to control soilborne diseases.

• Applied Biological Chemistry
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• 제34권4호
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• pp.366-372
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• 1991

관행법에 의해 재배된 수세미외의 잎, 줄기, 미숙과즙, 종실, 수액 등 각 부위에 함유된 휘발성 정유성분, 탄화수소, 유기산 및 비휘발성 지방산을 추출, 분리하였다. 150여개의 분리성분중 37개 정유 성분을 확인한 후 각 부위별로 정량하였다. 또한, 26종의 탄화수소, 5종의 유기산 및 6종의 지방산도 분리정량하여 부위별 분포와 함량을 비교하였다.

• 동아시아식생활학회지
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• 제6권3호
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• pp.355-363
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• 1996

Physicochemical properties of marketing and intensive persimmon vinegar were investigated, the results are as following; Total acidity in D, H, S, J, sweet persimmon(SP) and persimmon vinegar were 4.20, 3.03, 2.58, 3.30, 5.92 and 5.81%, respectively, and the value of intensive persimmon(IP) vinegars wre higher than that of others. SP sample was lower than any other vinegar as compared to L value in colors, no sample was lower than H and S vinegar inturbidity and browning. Brix of IP samples were lower than that of other vinegars, there was a little fructose in the all samples. Among the organic acids, galacturonic acid content except acetic acid was the highest, and ascorbic and malic acid were detected a little, Calium content was the highest of minerals in persimmon vinegars, phosphorus was detected a little. Alcohols of 5~6 types were analyzed in each samples, free amino acids of 17~24 dypes were analyzed, D and IP vinegars have more acohols and amino acids, and their contents were higher than the others. Volatile components of 6~9 types were analyzed in each samples, these have more ethanols except acetic acids than other volatile components, and the contents of IP samples were higher than that of marketing persimmon vinegars.

• 원예과학기술지
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• 제32권2호
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• pp.252-260
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• 2014

Contents of carotenoids, phenolic compounds, volatile organic compounds, and alkaloids in leaves, internodes, fruits, and roots of tomatoes in different developmental stages were measured. Lycopene, ${\beta}$-carotene, and lutein were detected in all the tested parts except roots and green fruits. Lycopene content in red fruits was $49.04{\mu}g{\cdot}g^{-1}$ FW, while that in the other parts was below $40{\mu}g{\cdot}g^{-1}$ FW. ${\beta}$-Carotene and lutein contents in 24th leaves were 5.81 and $6.40{\mu}g{\cdot}g^{-1}$ FW, respectively, and were greater than those in the other parts. Caffeic, chlorogenic, and vanillic acids were detected in all the tested parts except roots. The content of chlorogenic acid in the 18th leaves was $40.11{\mu}g{\cdot}g^{-1}$ FW, while that in the other parts was lower than $31.00{\mu}g{\cdot}g^{-1}$ FW. The contents of caffeic and vanillic acids in the 24th leaves were 9.18 and $1.64{\mu}g{\cdot}g^{-1}$ FW, respectively, and were greater than those in the other parts. Moreover, younger leaves contained the more diverse volatile organic compounds including monoterpenes and sesquiterpenes. Contents of dehydro-tomatine and ${\alpha}$-tomatine were greatest in leaves, followed by internodes, roots and fruits. Younger leaves and internodes contained more dehydro-tomatine and ${\alpha}$-tomatine than older leaves and internodes. The contents of dehydro-tomatine and ${\alpha}$-tomatine in the 24th leaves were 0.89 and $1.42mg{\cdot}g^{-1}$ FW, respectively, and were greatest among all the tested parts. Our results indicated that, except lycopene, tomato leaves included greater secondary metabolites contents than red fruits. The results suggest that inedible parts of tomato plants can be used as raw material for antioxidants, anti-inflammatory agents, fungistats, and pesticides.