• 한국식품과학회지
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• 제51권6호
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• pp.543-550
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• 2019

숙성기간 및 저장용기에 따른 쌀 원료 증류식 소주의 향기성분의 변화를 파악하기위해, 스테인리스, 오크, 옹기로 각각 숙성 용기를 달리하여 18개월간 항온 및 실온조건에서 숙성한 시료를 분석하였다. GC-MS를 이용한 휘발성 향기성분 분석 결과 에스터(ester) 35종, 알코올(alcohol) 15종, 케톤(ketone) 5종, 알데하이드(aldehyde) 3종, 기타(miscellaneous) 13종, 미확인물질(unknown) 14종으로 총 85종의 휘발성 향기성분이 검출되었다. 에스터와 알코올이 주요 성분으로 분석되었으며, ethyl octanoate, ethyl decanoate, ethyl dodecanoate, isoamyl acetate, phenethyl acetate, ethyl hexanoate, isoamyl alcohol, phenethyl alcohol이 주요 향기 성분으로 나타났다. 그 외 오크 숙성 시료에서 4-ethylguaiacol, furfural, 1-decanal, 2-pentylfuran의 성분도 검출되었다. 주성분 분석 결과, 숙성 용기에 따라 PC1상에서 향기패턴의 큰 차이를 보였고, 숙성기간에 따라 오크와 옹기숙성 시료에서 향기성분이 증폭되는 것으로 나타났다. 스테인리스 스틸 숙성 시료의 경우 증류 직후와 비교해 향기성분의 변화가 가장 적게 나타났다. 향후 오크와 옹기 숙성재를 다양화하여 향기성분의 변화를 파악하는 연구와 이를 실제 감각평가나 소비자 조사와 연계하여 고급 숙성 증류식 소주 개발을 위한 후속 연구가 필요하리라 여겨진다.

• Journal of Ginseng Research
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• 제20권1호
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• pp.42-48
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• 1996

This study was carried out to determine the differences of essential oil components among Korean, Chinese and Japanese red ginseng, and Korean white ginseng (Panax ginseng C.A Mayer) , American and Canadian ginseng (P. Quinquefolium), and sanchi ginseng (P notoginseng). The steam distilled oils of these ginsengs were analyzed by GC and GC-MS, and 22 sesquiterpenes, 8 sesquiterpene alcohols, 8 monoterpenes, 5 aldehydes, 4 esters, 3 acids, 2 alcohols and 5 miscellaneous components were identified. The major oil components of Korean, Chinese and Japanese red ginseng were $\beta$-panasinsene, $\beta$-caryophyllene, $\alpha$-panasinsene, $\alpha$-neoclovene, selina-4,11-diane, bicyclo-ger-macrene and spathulenol. The contents of $\beta$-panasinsene, $\alpha$-neoclovene, $\alpha$-basabolene and spathulenol were higher in Korean red ginseng than Chinese and Japanese red ginseng. The contents of $\alpha$-cubebene, selina-4,11-diene and ledol were higher in Chinese red ginseng than Korean and Japanese red ginseng, but those of selina-4,11-diene and spathulenol were lower in Japanese red ginseng than Korean or Chinese red ginseng. On the other hand, the GC patterns of the oils from American, Canadian and sanchi ginseng were different from that of Korean white ginseng.

• 한국섬유공학회:학술대회논문집
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• 한국섬유공학회 2003년도 The Korea-Japan Joint Symposium
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• pp.9-10
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• 2003

Cellulose/chitosan and sericin/chitosan blend films with various mixing ratios were prepared and tensile properties, solubilities to the aqueous solution of acetic acid and the degree of swelling by the distilled water were measured. The interaction between the components of blend film and the blending effect were investigated.

• 한국축산식품학회지
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• 제38권5호
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• pp.889-900
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• 2018

Characterization and utilization of the bioactive compounds from natural resources is one of the most concerns to maintain quality properties of foods, especially to prevent the oxidation of lipids in meat products. Phytochemical components and antioxidant activities of Cudrania tricuspidata (CT) leaves extracted using various solvents and their effects on physicochemical properties of pork patties during refrigerated storage were measured. The combined solvents of 80% ethanol, 80% methanol and pure double-distilled (dd)-water obtained the higher total phenolic compounds, flavonoids content, and antioxidant activities as compared to the pure solvent alone. Among the individual antioxidant components, catechin was the predominant polyphenol in CT leaves in all extracts. The addition of CT leaves extracts into pork patties showed high antioxidant activities since thiobarbituric acid-reactive substances (TBARS) values of added CT extracts were lower than those of the control (p<0.05). In conclusion, CT leaf phytochemical components displayed antioxidant activity that varied with the extract solvent used. CT extracts were superior to control in retarding lipid oxidation of pork patties, which was evident as reduced TBARS and peroxide values (POV).

• 한국염색가공학회지
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• 제29권4호
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• pp.256-267
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• 2017

The purpose of this study was to analyze the functional ingredients of Perilla Frutescens L. Britt extracts and to confirm the possibility of producing PVA nanofibers using extracts. Distilled water, 3% aqueous sodium hydroxide solution and ethanol were used as extraction solvents. The electrospinning was carried out at a PVA concentration of 12%, an applied voltage of 10 kV and a tip to collector distance of 15cm. The contents of volatile substances, essential oils, total polyphenols and flavonoids of the extracts were measured to examine the constituents of functional materials. Flavor components and esters were identified in 3% sodium hydroxide and ethanol extracts. The content of polyphenols and flavonoids in ethanol extracts was higher than that of medicinal plants. 1wt.% of Tween 20 was added to disperse the essential oil components of the ethanol extract. Addition of a dispersant made it possible to produce a homogeneous mixture by having some compatibility with the ethanol extracts and the PVA molecule. When the concentration of the ethanol extract was 0.25 and 0.5wt%, relatively uniform PVA nanofiber having an average diameter of 350 to 365nm could be produced. The results of FT-IR, XRD and DSC analysis confirmed that Perilla Frutescens L. Britt ethanol extract was well mixed with PVA molecules and was electrospun.

• Applied Biological Chemistry
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• 제30권3호
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• pp.272-277
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• 1987

약주(藥酒)의 향기성분(香氣成分)인 formaldehyde, acetaldehyde, ethyl acetate, acetone, diacetyl, n-propanol, iso-butanol, iso-amyl alcohol, dimethylsulfide, ethanol의 역치를 유사(類似) 약주(藥酒)와 18% ethanol 액(液) 및 $20^{\circ}C$와 $50^{\circ}C$의 증류수중에서 측정(測定)하고 이들 성분(成分)의 각농도(各濃度)에서의 쾌감도(快感度)를 측정(測定)하였다. 유사약주(類似藥酒)에서의 역치는 각각 5,20,30,7,0.2,20,80,10,2ppm 및 5g/l이었으며 $20^{\circ}C$ 증류수중에서의 역치는 각각(各各) 5,10,20,7,0.15,75,7.5,2ppm 및 5g/l 이었고 iso-amyl alcohol은 $80{\sim}350ppm$에서 최고 쾌감(快感)을 나타낸 후 520ppm 이상에선 불쾌감(不快感)을 나타냈다. Ethanol은 $10^5ppm$, n-propanol은 50ppm까지는 쾌감(快感)을 나타냈으며 iso-butanol은 220ppm, diacetyl은 1ppm을 초과하면 불쾌감(不快感)을 나타냈으며 iso-butanol은 260ppm 초과의 경우 극도의 불쾌감(不快感)을 나타냈다. Ethyl acetate는 함량(含量)이 증가함에 따라 쾌감(快感)이 좋았으나 250ppm이 초과하면 쾌감(快感)이 감소(感少)하는 경향이었으며 acetaldehyde는 110ppm에서 최고(最高) 쾌감(快感)을 보였다.

• 한국수산과학회지
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• 제49권4호
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• pp.445-453
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• 2016

Seahorse Hippocampus abdominalis a marine teleost fish, has long been used as one of the essential materials in traditional Chinese medicine. However, the uses of seahorse have been limited due to its high cost, despite its beneficial biological activities. Seahorse has not been widely explored for its biofunctional properties and active components. In the present study, the enzymatic hydrolysates of seahorse were prepared by using two digestive enzymes (trypsin and pepsin) and five food grade enzymes (neutrase, protamex, alcalase, kojizyme, and flavourzyme). The enzymatic hydrolysates indicated higher hydrolysis yields than its water extract. Among them, the distilled water-pepsin hydrolysate (DP) which was obtained by distilled water extraction followed by pepsin hydrolysis, showed the highest yield and protein content as well as the highest alkyl radical scavenging activity. Also, it provided protective effects against oxidative stress induced by AAPH in vero cell and zebrafish. Further fractionation based on the molecular weight was carried out to identify it’s active components, and < 5 kDa (less than 5 kDa) molecular weight fraction was confirmed to have the highest antioxidant activity. In conclusion, this study suggests that DP of seahorse has antioxidant properties, and might be a novel and useful material from the marine origin for healthy functional foods and cosmetics.

• 한국식품저장유통학회지
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• 제19권3호
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• pp.433-437
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• 2012

감자를 이용해서 증류식 소주를 제조하고 전통방식의 소주고리 증류 및 감압증류 조건에 따른 퓨젤유 및 휘발성 성분의 특성에 대해 조사하였다. 감자소주의 퓨젤유 함량은 감자술덧을 감압 증류하였을 때 높았으며, isoamyl alcohol, isobutyl alcohol, n-propanol의 상대비는 전통방식 증류주가 3.1 : 0.8 : 1.0, 감압 증류주가 4.0 : 1.2 : 1.0 이었다. 감자소주의 휘발성 성분 chromatogram은 증류조건에 따라 뚜렷한 차이를 나타내었고, 휘발성 성분으로는 감자소주(I)에서 alcohol류 4종, ester류 6종, aldehyde류 1종, acid류 1종, 감자소주(II)에서 alcohol류 7종, ester류 14종, aldehyde류 2종, acid류 1종 및 기타 성분 3종이 확인되었다. 감자소주(II)는 향에 대한 선호도가 감자소주(I)보다 유의적으로 높았다.

• 한국균학회지
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• 제14권1호
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• pp.25-30
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• 1986

Sarcodon aspratus (Berk.) S. Ito에서 효소분획을 추출하여 casein 및 여러 식품 단백질기질을 조제하여 그것에 대한 분해작용을 실험하였다. Casein을 크게 분해하고 각 식품단백질기질도 분해하였으므로 protease의 존재를 알게 되었고 여러 기질에 대해 표준 pepsin과 비교할때 거의 동일한 역가를 나타내었으므로 우수한 protease가 함유되어 있음을 규명하였다. 아울러 능이가 육류체증 치료에 민간약으로 사용되는 근거를 제시하였다고 사료된다.

• 미생물학회지
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• 제47권1호
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• pp.87-91
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• 2011

본 연구에서는 분말 식품에서 real-time PCR과 배지배양법을 사용하여 Cronobacter spp.를 검출하는 방법이 비교검증 되었다. 조제분유, 이유식, 미숫가루에 Cronobacter를 인위적으로 접종시킨 후, 식품공전의 방법에 따라 멸균증류수와 Enterobacteriaceae enrichment (EE) broth에서 각각 1, 2차 증균배양 하였으며, Druggan-Forsythe-Iversen에 선택배양하여 Cronobacter를 검출하였다. Real-time PCR은 멸균증류수 및 EE broth에서 1 ml을 채취한 후 DNA를 추출하여 시행하였다. 실험결과 모든 식품에서 배지배양법과 real-time PCR간에는 통계학적 유의차가 존재하지 않았다(p>0.05). 한편 모든 실험회차에서 real-time PCR 수행 시, 1차 증균액인 멸균증류수에서의 양성검출율이 2차 증균액인 EE broth에서보다 높았는데, 이는 2차 증균액 내의 구성성분 중 일부분이 real-time PCR의 반응을 저해했기 때문으로 사료된다. 연구결과를 종합해 볼 때, 1차 증균 후, real-time PCR을 통해 Cronobacter를 검출하는 방법은 정확한 민감도를 보이면서도 시간과 노동력을 절감할 수 있는 효과적인 방법으로 사료된다.