• Title/Summary/Keyword: aroma recovery

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Analysis of Amadori Compounds in Tobacco Leaf by LC-MS/MS (LC-MS/MS를 이용한 담배 중 Amadori Compounds의 분석)

  • Min, Hye-Jeong;Kim, Young-Hoi;Lee, Jeong-Min;Jang, Gi-Chul
    • Journal of the Korean Society of Tobacco Science
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    • v.33 no.1
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    • pp.21-27
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    • 2011
  • Amadori compounds(1-deoxy-1-amino-2-ketoses) are important precursors of color, flavor and aroma produced in foods. Amadori compounds occur naturally in tobacco. The contribution of amadori compounds to smoke quality has been (of) interest because of their roles of the Maillard reaction in the leaf chemistry. The amounts of these compound in tobacco are affected by the processes of aging, drying and storage conditions. In this study, eight compounds were chemically synthesized because amadori compounds (have not been sold commercially these days.) were not available for obtaining commercially. The aim of this study was to develop the analytical method of amadori compounds in tobacco leaf by the liquid chromatography mass spectrometry using triple quadrupole analyzer(LC-MS/MS). This method was simple, rapid, selective and sensitive, and eight amadori compounds were simultaneously and quantitatively analyzed within 20 minutes. This method showed excellent accuracy and precision. Recovery rates of amadori compounds ranged from 86% to 102%, with relative standard deviation(RSD) ranged from 2.6% to 5.9%. This method was applied to analysis of amadori compounds contents of tobacco leaves in different varieties. Furthermore, it was expected that the method could be extended to the analysis of other amadori compounds.

The Clinical Observation on 3 Cases of Facial Palsy Following Microvascular Decompression in Hemifacial Spasm Patients (편측안면경련 환자에서 미세혈관 감압수술 후 발생한 구안와사 환자 3례)

  • Kim, Jong-In;Choi, Yang-Sik;Kim, Haeng-Beom;Kim, Joo-Hee;Lee, Ro-Min;Kim, Kun-Hyung;Lee, Jae-Dong;Kang, Sung-Keel;Koh, Hyung-Kyun
    • Journal of Acupuncture Research
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    • v.23 no.6
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    • pp.229-238
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    • 2006
  • Background and Objetive : The aim of this study is to report 3 cases of facial palsy following microvascular decompression in hemifacial spasm patients. It is a rare disease, with few research on the effect of acupuncture therapy on it. Material and Method : We selected 3 cases of facial palsy following microvascular decompression in hemifacial spasm patients, among patients who visited the Facial palsy Clinic of Kyunghee Oriental Medical Center. We treated them with acupuncture therapy(ST6, ST4, BL2, TE17, GV24, GV14, and Ex-HN4 of the healthy side, and LI4 and ST36 of both sides) and aroma therapy. After treatment we observed and checked any changes within clinical symptoms using the House-Brackmann Grade and the Yanagihara's Unweighted Grading System. Result and Conclusion : 1. All three cases were of hemifacial spasm patients who had facial palsy following microvascular decompression. The patients visited 27 months(Case1), 2 months(Case2) and 7 months(Case 3) after the surgery respectively. 2. Period of time till complete recovery is 23 months(Case1), 8 months(Case2) and 3 month (Case3) respectively. 3. All three cases had symptoms of sequelae: retraction of mouth toward the healthy side and involuntary spasm of lips. The later the initiation of treatment after the sugery, the more severe symptoms of sequelae.

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Effect of Evidence-based Clinical Practice Guidelines for Promotion of Postoperative Nausea and Vomiting of Patients with Laparoscopic Hysterectomy (복강경 수술 환자의 수술 후 오심과 구토 관리를 위한 근거중심 실무 가이드라인 적용 효과)

  • Lee, Sung-Hee;Hong, Sung-Jung;Kim, Hwa Sun;Jeon, Younghoon
    • Korean Journal of Adult Nursing
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    • v.27 no.5
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    • pp.481-492
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    • 2015
  • Purpose: The purpose of this study was to examine the effects of the evidence-based clinical practice guidelines on Postoperative Nausea and Vomiting (PONV). Methods: The research design was a non-equivalent control group with a non-synchronized design. The participants were the patients undergoing gynecologic laparoscopy. Data were collected from July, 2014 through January, 2015. The participants in the experimental group (n=35) received an assessment of risk factors of PONV, aroma therapy, and P6 acupressure method as recommended in the guidelines. Those in the control group (n=35) received usual nursing care. Data were analyzed by mean, standard deviation, t-test, ${\chi}^2$-test using SPSS/WIN 19.0 program. Results: The occurrence of nausea and vomiting, the level of nausea and vomiting, and the need for antiemetic medicine in the experimental group were significantly less than those in the control group after surgery. The levels of postoperative pain and the amounts of time for nursing activities in the experimental group were significantly reduced than those in the control group after surgery. The levels of satisfaction were significantly higher in the experiment group than that of the control group. Conclusion: The evidence-based guidelines is recommended for nursing practice as a guidance for managing PONV and helping the recovery of patients after laparoscopic surgery.

Permeation Flux of Ester Compounds through Hydrophobic Membrane by Pervaporation (투과증발에 의한 Ester 성분의 소수성막의 투과플럭스)

  • Song, Kun-Ho;Lee, Kwang-Rae
    • Membrane Journal
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    • v.26 no.3
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    • pp.197-204
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    • 2016
  • The objective of this work was to investigate the performance of pervaporation process for recovery of ester compounds from model aqueous solutions and how the fluxes of esters and water were affected by changes in feed concentration and temperature. The flux of ethyl acetate (EA), propyl acetate (PA), ethyl propionate (EP), butyl acetate (BA), and ethyl butyrate (EB) increased with an increase in feed concentration from 0.15 wt% to 0.60 wt%, and increased with temperature change from $30^{\circ}C$ to $50^{\circ}C$. The flux of esters (EA, PA, EP, BA, and EB) was in order of (EA) < (PA, EP) < (BA, EB). This result meant that the flux strongly depended on affinity between esters and membrane surface; EA is the least hydrophobic because it has one hydrophobic function group ($-CH_2-$), (PA, EP) have two ($-CH_2-$), and (BA, EB) are the most hydrophobic because these have three ($-CH_2-$). As well as such an influence of hydrophobicity of ester molecules on ester flux, the influence of hydrophobicity of membrane surface on ester flux needs further investigation. With increase in temperature, water flux of aqueous EA, PA, EP, BA, and EB solution increased. However, water flux of aqueous ester solutions did not change appreciably with increase in concentration. This experimental results may be used as fundamental data for pervaporation (PV) to improve the aroma recovery process as an alternative to thermal evaporation and distillation processes.

Effects of Shading and Organic Matter Applications on Growth and Aromatic Constituents of Codonopsis lanceolata (차광과 유기물 시용이 더덕의 생육 및 향기성분에 미치는 영향)

  • 이승필;김상국;남명숙;최부술;이상철
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.41 no.4
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    • pp.496-504
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    • 1996
  • The study was conducted to obtain the basic information on increasing aromatic degrees by shading and organic matter application on Condonopsis lanceolata. The result were as followings : Fresh root wt. in shading 55 % treatment was increased about twices, whereas fresh root weight in non-shading was decreased. But growth of ground parts such as vine length, leaf width, and leaf number was promoted under non-shading treatment. Macroelements such as K, Ca, and Mg, were increased in non-shading and higher organic matter application. The components such as crude protein, fiber, and ash were increased in the shading 55% treatment compared with non-shading. In the sixteen amino acids, arginine contents were the highest in non-shading and organic matter 30M/T. Recovery yield of essential oil was 0.005% in non-shading. The highest was organic matter 30M/T in the non-shading as 0.007%. Major aromatic constituents were 11 kinds of aliphatic alcohols such as I-hexanol, cis-3-hexenol, and trans-2-hexanal. As a result, major aromatic degree was higher in shading 55%, also increased in the much organic matter application. It was considered to be applied dense shading 55% and much organic matters to produce Condonopsis lanceolata plants which have high aroma and good quality.

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Clinical Studies on 11 Cases of Facial Nerve Palsy in Herpes Zoster Oticus (이성대상포진으로 인한 안면신경마비환자 11례에 대한 임상적 고찰)

  • Kim, Youn-mi;Baek, Yong-hyeon;Lee, Jae-dong;Park, Dong-seok;Kim, Chang-hwan;Kob, Hyung-kyun
    • Journal of Acupuncture Research
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    • v.19 no.5
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    • pp.234-246
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    • 2002
  • Background: Herpes Zoster Oticus, which can be caused from infection by Varicella-zoster virus, is known to be expected poor prognosis, since it has higher possibility of complete injury of facial nerve. Conservative therapy of the Western medicine is effective on the treatment for the herpes zoster and pain. However, its effectiveness on the facial verve palsy has not been proven. Objective : This study was performed to evaluate the treatment of oriental medicine and an analyze prognosis of the facial nerve palsy in Herpes Zoster Oticus. Methods : This retrospctive study was conducted to observe the clinical manifestation of Herpes Zoster Oticus, and the result of electrical diagnostic study on the patients with the facial nerve palsy in Herpes Zoster Oticus who were diagnosed and treated at the Department of Acupuncture & Moxibustion in Kyung Hee Oriental Medical Hospital. Results : 1. According to the six clinical types of Herpes Zoster Oticus, the patients in this study can be grouped as 7 cases of the type II, 2 cases of the type V, and one case of the type IV and the type VI. 2. The shorter the period from onset to the first visit to a hospital, the prognosis of facial nerve palsy in Herpes Zoster Oticus was the better. 3. According to the follow up study, the H-B grades of all cases were improved. 4. According to the follow up study, the result of electrical diagnostic study was improved. Conclusions : We found in our study that the treatment of oriental medicine, such as acupuncture, herbal medicine and aroma therapy, helps the recovery of facial nerve palsy in Herpes Zoster Oticus. The further clinical study about the more cases of facial nerve palsy in Herpes Zoster Oticus and comparative study between the group of oriental medicine and that of western medicine are needed.

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Quality Evaluation of Extracted Citron Juice by Long Term Storage (장기저장에 따른 착즙 유자 과즙의 품질 평가)

  • 이경미;이미순;황진봉;정진웅
    • The Korean Journal of Food And Nutrition
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    • v.10 no.2
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    • pp.145-150
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    • 1997
  • This study was performed to compare the changes of quality in citron(Citrus junos Sieb) juice between sampleII stored at 5$^{\circ}C$ for 1 year after extraction and sampleI made from raw citrons by the belt-pressing extraction method. Compared with sampleI, the soluble solid of sampleII was decreased more than 1$^{\circ}$brix, and the moisture increased 3%. The acidity reduced from 5.83 to 5.23 at the pH rose from 2.68 to 2.84. Although it decreased more than 50% in vitamin C and over 20~30% in amino acid, the changes of the other proximate components, amino nitrogen and free sugar content were very little at the range 0.1~1.0%. Volatile compounds in citron juices between sampleI and II were analyzed by GC and GC-MS. Sample I and II showed about 70 of volatile compounds. But only 13 compounds were identified by mass spectrometer. Major volatile compounds were aromatic compounds of limonene, terpinene, terpineol and terpinolene. Amounts of volatile compounds in citron juices depended on the storage period. The recovery of volatile compounds of citron juices, reduced 30~50% after storage for 1 year and the trace component disappeared during storage. The sensory characteristics including color, aroma, taste and overall acceptability and sugar recipe were not significantly.

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Physicochemical Characteristics of Sikhye (Korean Traditional Rice Beverage) with Specialty Rice Varieties (특수미 품종에 따른 식혜의 이화학적 특성)

  • Kim, Kee-Jong;Woo, Koan-Sik;Lee, Jin-Seok;Chun, A-Reum;Choi, Yoon-Hee;Song, Jin;Suh, Sae-Jung;Kim, Sun-Lim;Jeong, Heon-Sang
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.37 no.11
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    • pp.1523-1528
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    • 2008
  • This study was carried out to compare the physicochemical characteristics and sensory quality of Sikhye (a Korean traditional rice beverage) prepared with specialty rice varieties. The results showed that Ilpum had higher hulling recovery, milled/brown rice ratio, and milling recovery than Sulgaeng, Baegjinju, Baegjinju 1, and Dongjinchal. The alkali digestive value, protein content, and amylose contents of Sulgaeng were 6.3, 7.3% and 19.3%, respectively. The highest brix degree was $10.00^{\circ}Bx$ in Baegjinju Sikhye. The turbidity appeared at 0.4440, 0.4100, 0.3828, 0.3372, 0.1414 in Ilpum, Baegjinju, Baegjinju 1, Sulgaeng, and Dongjinchal Sikhye, respectively. There were no significant differences in pH and maltose contents among the groups. The highest L-value was 44.62 in Ilpum Sikhye. The a-value and b-value were $-1.66{\sim}-0.70$ and $-9.18{\sim}-5.19$, respectively. Finally, the sensory evaluation results indicated that there were no significant differences in appearance, aroma, and taste between the groups, and the Sulgaeng Sikhye showed higher overall quality than the Dongjinchal Sikhye as the control.