• 한국식품영양과학회지
• /
• 제29권6호
• /
• pp.1123-1126
• /
• 2000

수증기 증류법으로부터 얻은 배초향(Agastache rugo-sa, Labiatae)의 정유는 부패균을 포함하는 수종의 미생물에 대하여 현저한 항균활성을 나타내었다. 배초향의 유효성분을 확인하기 위하여 정유성분을 GC-MS로 분석한 결과 GC chromatogram에서 얻은 각 피크의 reten-tion time 및 mass spectral data 의표준물질과의 비교에 의해서 isomenthone, methone, dihydrocarvone, anetho-le, vanillin, eugenol, methyleugenol, $\beta$-caryophyllene, $\beta$-caryophyllene oxide 등의 정유성분이 확인되었다. 이 연구에서 밝혀진 여러 성분들의 항균 활성은 잘 알려져 있으므로 이들이 유효성분으로 추측된다. 또한 Korean mint로 세계적으로 알려져 있는 배초향의 정유는 식품 방부제로서 적합할 것으로 생각된다.

• 한국근적외분광분석학회:학술대회논문집
• /
• 한국근적외분광분석학회 2001년도 NIR-2001
• /
• pp.1051-1051
• /
• 2001

In 1989, at the 2nd ICNIRS Meeting in Tsukuba, I projected certain directions for NIR technology would take in the future. Among those projections were: (1) An inrush of companies producing FT-NIR instruments. (2) Hybrid NIR Systems (3) Hand-held NIR Technology. All three thrusts have resulted in numerous commercial offerings over the last 12 years Hand-held technology for all fields is growing at an astonishing rate. To date, NIR work at North Carolina State University has produced four (4) hand-held NIR units for: (1) Nicotine and Moisture in tobacco, (2) Vanillin and Moisture in Vanilla Beans, (3) Protein, Moisture and Nitrogen in plant tissue, (4) Chlorophyll and Moisture in Growing Plants: A NIR Spectrometer for Developing Countries. This paper will discuss these developments, including design and performance data.

• 한국식물생명공학회:학술대회논문집
• /
• 한국식물생명공학회 2003년도 추계학술대회 발표논문 초록집
• /
• pp.175-175
• /
• 2003

• 한국식품위생안전성학회지
• /
• 제7권2호
• /
• pp.107.1-112
• /
• 1992

Free-, soluble- and insoluble phenolic acids were extracted from defatted Galla Rhois. The extracts were then dissolved in equal amounts of an soybean oil, and POV (peroxide value) of the resulting substrates, portion of the soybean oil (control) and 0.02% BHT were measured by AOM (active oxygen method) test at 97.8$^{\circ}C$ for 40 hours through Rancimat method. Induction period of control, BHT, free phenolic acids, soluble phenolic acids and insoluble phenolic acids by the Rancimat method were 4.8, 10.5, 23.9 and 30.5hr. The phenolic acids separated and tentati-vely identified by gas chromatography were catechol, gallic acid, vanillin, protocatechuic acid, syri-ngic acid, ferulic acid.

• BMB Reports
• /
• 제45권5호
• /
• pp.265-274
• /
• 2012

Lignin hydrolysates contain many different chemical species, including ferulic acid, coumaric acid, vanillic acid, vanillin, syringaldehyde and furfural. From the perspective of biofuels, these compounds are problematic and can cause downstream loss of product if not removed prior to beginning the fermentative process. In contrast, a search for these compounds within the literature turns up many papers where the same compounds have beneficial properties pertaining to human health, including as antioxidants and in cancer prevention, or are involved in bacterial cell-to-cell signaling. Consequently, this article reviews the dual nature of these and other compounds found in lignin hydrolysates, highlighting both their detrimental and beneficial activities.

• Archives of Pharmacal Research
• /
• 제29권12호
• /
• pp.1171-1178
• /
• 2006

This study examined the effects of flavors, which are usually added to improve the appeal of pharmaceutical agents, on the viscosity and gelling point of 18% (w/w) aqueous poloxamer 407 solutions. Monoterpenes, esters, alcohols, aldehyde ketones and lactone type flavors were examined. The concentrations of flavor ranged from 0.1 to 1.0%(w/w). After adding a flavor to the aqueous poloxamer 407 solution, the viscosity of the solution was measured using a Brookfield viscometer, and the gelling point was determined from the viscosity vs. temperature plot. The gelling point of the aqueous poloxamer 407 solution decreased with increasing concentration of flavors except for coumarin, vanillin and ethylvanillin. Thermal analysis with DSC showed an interaction between the flavors and poloxamer 407. These results suggest that the flavors bind to the hydrophilic end chains of poloxamer 407, which increases the viscosity, causing gelation at lower temperatures.

• 한국생물공학회:학술대회논문집
• /
• 한국생물공학회 2002년도 생물공학의 동향 (X)
• /
• pp.473-476
• /
• 2002

A lignin degradation bacteria, symbiotic bacteria was isolated from the gut of Sympetrum depressiusculum and tested for its lignin degrading activity using lignin model compounds and related aromatic compounds. The strain was identified as Serratia marcescens HY-5 based on the 165 rDNA, cellular fatty acid composition, biochemical and physiological characteristics. S. marcescens showed 40-50% lignin degrading activity in the media that contained vaillin, guaiacol and dealkaline lignin. S. marcescens showed three ligninase activities [Jaccase, lignin peroxidase(LiP) and Manganase peroxidase(MnP)]. Addition of dealkaline lignin to the basal media increased about 6fold of laccase activity. Vanillic acid or vanillin increase 1.3fold of MnP activity and p-coumaric acid increased 12fold of LiP activity which added to the basal medium.

• 한국응용과학기술학회지
• /
• 제12권2호
• /
• pp.145-150
• /
• 1995

The Kinetics velocity for hydrolysis reaction of vanillylidene imine derivatives has been measured by ultra-violet ray spectrophotometer in 20wt% $dioxane-H_2O$ at $25^{\circ}C$. It was measured the reaction rate Constant of vanillylidene imine derivatives that can be applied widely following to pH-change at $25^{\circ}C$. Final products that hydrolyzed the vanillylidene imine certified in vanillin and aniline derivative, and the effect of substitution radical that has affected on hydrolysis reaction was largely promoted to reaction rate by electron attrating group in acidity and electron donoring group in basic. From the results of rate constant to hydrolysis reaction, substituent radical effect and final products. It has certified the hydrolysis reaction mechanism of vanillylidene imine derivatives.

• 한국응용약물학회:학술대회논문집
• /
• 한국응용약물학회 1993년도 제2회 신약개발 연구발표회 초록집
• /
• pp.147-147
• /
• 1993

신생쥐의 DRG 배양에서 접종후 1일째 neurite의 형성을 관찰할수 있었고 배양한 세포가 신경세포임을 확인하기 위하여 신경섬유에 대한 항체를 이용한 조직화학적 실험을 실시한 결과 붉게 염색된 세포를 볼 수 있었으므로 이 세포들이 DRG신경세포임을 확인할 수 있었다. 배양한 신경세포중 capsaicin에 대한 감수성을 갖는 신경세포군을 확인하기 위하여 cobalt stain 방법으로 실험한 결과 capsaicin에 대한 감수성율 갖는 신경세포룰 관찰할 수 있었고 비교를 위하여 함께 실험한 resiniferatoxin, KR 25018, 6-paradol, NE-19550, RDL-201등의 capsaicin 유사체들의 경우도 정도는 달리 하였으나 유사한 반응을 보였으므로 일차배양한 신경세포에 대한 작용이 capsaicin의 작용과 같을 가능성을 보여주었다. 진통효과 검정결과 진통효과가 있는 것으로 확인된 capsaicin 구조 유사체들인 resiniferatoxin, 6-paradol, NE-19550, RDL-201, KR-25018모두 농도 의존적인 반응을 보였다. 또한 칼슘 도입을 위해 요구되는 관능기로는 알킬측쇄와 P-위치의 수산기, 3-methoxy기 및 acyl amide 구조가 중요하였다. 알킬측쇄는 NVA의 경우처럼 탄소 8개 정도가 적당했으나 구조적으로 현저히 다른 치환기를 가진 resiniferatoxin이나 KR-25018의 경우에도 유효하였다. Vanillin환의 P-수산기도 필수적이었고 3-methoxy기의 존재시에는 칼슘 도입효과가 강하였다. Acyl amide 결합도 중요하나 필수적은 아니였다.

• Fibers and Polymers
• /
• 제7권2호
• /
• pp.158-163
• /
• 2006

Standard extraction procedure for examining chromophoric substances of turmeric was investigated. Acetone and methanol were used as extracting solvents with different extraction procedures and pH levels. GC-MS analysis identified curcumene 2 (6.7 min), feruloylmethane 3 (8.3 min), coumaran 4 (6.09 min), vanillin 5 (6.2 min), and zingiberene 6 (10.5 min) as the major products. Curcumin 1 which has been known as the major chromophoric substance of turmeric was not detected in any samples. The maximum amount of curcumene 2, which was used as the fingerprint product for turmeric dye, was obtained by utilizing presoaking and decanting step with methanol prior to actual extraction step using a waterbath shaker (WMM). The highest relative abundance of curcumene 2 was detected in pH 6 sample followed by pH 5 indicating that the most appropriate pH level was in the range of pH 6-5.