• Title, Summary, Keyword: electronic tongue

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Amperometric Electronic Tongue Based on Metal Oxide Containing Carbon Paste Electrode Array (금속 산화물을 포함한 탄소반죽 전극 어레이로 제작한 전자 혀)

  • Han Jong Ho;Kim Dong Sun;Kim Jong Sik;Yoon In Jun;Cha Geun Sig;Nam Hakhyun
    • Journal of the Korean Electrochemical Society
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    • v.7 no.4
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    • pp.206-210
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    • 2004
  • All array of carbon paste-based electrodes was prepared by screen printing the carbon paste modified with metal oxides $(TiO_2,\;RuO_2,\;PbO_2,\;Ni(OH)_2)$ and Prussian blue (PB). An electronic tongue system was assembled with the carbon-paste electrode array, and applied to discriminate the tastes of various commercial beverages and foods by measuring the chronoamperometric responses to the samples diluted in 0.1M carbonate buffer (pH 9.6). The results were analyzed with principal component analysis(PCA) method and plotted on two dimensional PCA coordinate; it was apparent that the amperometric electronic tongue system could discriminate the types of various foods and beverages.

Discrimination of Korean Tobacco's Aroma and Tastes using the Eloctronic Nose/Tongue and Their feasibility in Tobacco Sensory Evaluation

  • Lee Whan-Woo;Lee Seung-Yong;Shon Hyun-Joo;Kim Young-Hoh
    • Journal of the Korean Society of Tobacco Science
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    • v.27 no.1
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    • pp.134-140
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    • 2005
  • The purpose of this study was the discrimination of different tobacco types by the E-Nose/tongue and the analysis of what human sensory attributes are correlated with e-instrument's sensors. Samples were made from five groups of Korean domestic tobacco leaves, aged burley and not aged, aged flue-cured and not aged and blending types of the four. Instrumental tests were conducted to discriminate characteristics among different tobacco samples by the E-Nose and the E-Tongue. Sensory attributes of tobacco tastes were impact, irritation, bitterness, hay-like, tobacco taste, smoke volume, smoke pungent and mouth cleanness. STATISTICA software was used to analyze correlation between the human sensory data and the raw data of e-instruments. Discrimination analysis can be achieved using principal components analysis (PCA) and discriminant factorial analysis(DFA). As a result, impact, bitterness, irritation, smoke volume and smoke pungent of human sensory attributes were correlated with data from the several clustered E-Nose sensors(p < 0.10). And bitterness, irritation, and smoke pungent of human sensory attributes were correlated with data from the E-Tongue sensors(p < 0.10). PCA plot by the E-Nose shows that aged tobacco and not aged were discriminated and DFA plot shows that three groups(aged burley, not aged burley and flue-cured) were discriminated. PCA plot by the E- Tongue shows that flue-cured tobacco was separated from burley. Our results indicated that the e-instruments are sensitive enough to distinguish among tobacco types and their several sensors are reacted to the human sensory attributes.

Effect of Aging Process and Time on Physicochemical and Sensory Evaluation of Raw Beef Top Round and Shank Muscles Using an Electronic Tongue

  • Kim, Ji-Han;Kim, Dong-Han;Ji, Da-som;Lee, Hyun-Jin;Yoon, Dong-Kyu;Lee, Chi-Ho
    • Food Science of Animal Resources
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    • v.37 no.6
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    • pp.823-832
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    • 2017
  • The objective of this study was to determine the effect of aging method (dry or wet) and time (20 d or 40 d) on physical, chemical, and sensory properties of two different muscles (top round and shank) from steers (n=12) using an electronic tongue (ET). Moisture content was not affected by muscle types and aging method (p>0.05). Shear force of dry aged beef was significantly decreased compared to that of wet aged beef. Most fatty acids of dry aged beef were significantly lower than those of wet aged beef. Dry aged shank muscles had more abundant free amino acids than top round muscles. Dry-aging process enhanced tastes such as umami and saltiness compared to wet-aging process according to ET results. Dry-aging process could enhance the instrumental tenderness and umami taste of beef. In addition, the taste of shank muscle was more affected by dry-aging process than that of round muscle.

A STUDY OF ELECTRONIC DEVICE FOR THE MEASURING THE TONGUE PRESSURE (설압력 측정품구에 관한 연구)

  • Lee, Ho-Yong;Kim, ki-Hwan;Chung, Kyung-Hoon
    • The journal of the Korean dental association
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    • v.15 no.12
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    • pp.1027-1030
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    • 1977
  • It has been widely believed that the exact measurement of the forces exerted on teeth and its structures by the lingual and perioral musculatures such as lip, cheek and tongue is important and significant in dentistry. Such measuring, moreover, is highly emphasized the importance of the fact that it can be of much help to study the physiological function displayed in the oral cavity. Recognizing the importance of measuring the pressures, the author has devised an electronic device consisting of pressure transducers utilizing reistance-strnain gauges. This electronic strain gauge was very easy to manipulate and its scale error was extremely minimized, unaffected by mouth temperature, mosture and external forces Author was able to read its results with attached meter without using calibration chart. Futhermore, the sensitivity of this electronic device was extremely high, Thus it facilitated to measure a force from 0 to 230 grams.

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Assessment of Physicochemical Characteristics among Different Types of Pale Ale Beer (Pale ale류에 속하는 맥주 신제품의 이화학적 특성 평가)

  • Kim, Ki Hwa;Park, Sue Jee;Kim, Jee Eun;Dong, Hyemin;Park, In Seon;Lee, JaeHwan;Hyun, So Yang;Noh, Bong Soo
    • Korean Journal of Food Science and Technology
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    • v.45 no.2
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    • pp.142-147
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    • 2013
  • This study was conducted to evaluate and compare new beer (NB) with market beers, e.g., New castle brown ale (NC), Victoria bitter (VB), and Coopers pale ale (CP) using physicochemical parameters. In addition, pattern recognition analyses were carried out using an electronic nose based on mass spectrometry (MS-E nose) and an electronic tongue (E-tongue) for differentiation of the different types of beer. The measured alcohol content of NB was 4.37%. NB was not significantly different compared with other types of beer with regard to bitterness unit, color, and polyphenol content (p<0.05). On the basis of the flavor pattern determined by the MS-E nose, NB was separated by DF1 (first score from discriminant function analysis), while NC, VB, and CP were located in the same group. The result of the E-tongue showed that the different samples could be clearly discriminated; NB was less sour. It was suggested that the discriminant function analysis (DFA) given by the MS-E nose and E-tongue could be used for evaluations during new product development. Furthermore, because of its simplicity, it might be possible to use the validated method for the evaluation of beer.

Implementation of Multi Electronic Acupuncture based on Internet (인터넷 기반 멀티 전자침 구현)

  • Hong, You-Shik
    • The Journal of The Institute of Internet, Broadcasting and Communication
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    • v.14 no.5
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    • pp.197-202
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    • 2014
  • It is used the important method that Oriental doctor determines patient's disease status observing patient's state of tongue in Oriental medicine clinic. In this paper, it developed the how to use the pulse diagnosis and tongue diagnosis based on s mart based electronic acupuncture. It will do objective judgment without wrong diagnosis. In this paper, we developed the algorithm that it automatically determines patient health condition and smart electronic acupuncture kit using fuzzy logic and fuzzy reasoning system were completed. In this paper, Simulation results proved that acupuncture is effective than the traditional method of using electronic intelligence.

Smart Tongue Electronic Chart System (스마트 설진 전자챠트 시스템)

  • Hong, You-Sik
    • The Journal of The Institute of Internet, Broadcasting and Communication
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    • v.12 no.2
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    • pp.243-249
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    • 2012
  • These days it is becoming more and more common to find electronic medical screening systems installed in Oriental hospitals and clinics. This is a relatively new development for the practice of traditional Oriental medicine. Specifically, Pulse detection machines are being utilized in order to help determine a patient's disease scientifically. However, identifying and diagnosing the specific disease correctly for each patient is still very difficult in Oriental medicine. The intention of this paper is to propose a solution which uses two separate Electronic systems working together to produce a better likelihood of finding the correct diagnosis for each patient. It is proposed that an EMR intelligent electronic chart system be developed and employed, which would utilize both Pulse wave system and a tongue detection system at the same time, in order to solve the problem. Computer simulation results have proven to show that EMR systems used in hospitals and clinics are more efficient and yield a more accurate diagnosis than traditional methods.

Intelligence Medical Diagnosis System using Cellular Phone (휴대폰을 이용한 지능형 의료진단 시스템)

  • Hong, You-Sik;Lee, Sang-Suk;Nam, Dong-Hyun;Lee, Woo-Beom;Choi, Jong-Gu;Song, Young-Jun
    • The Journal of The Institute of Internet, Broadcasting and Communication
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    • v.11 no.2
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    • pp.213-218
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    • 2011
  • In this paper, we have developed a tongue diagnosis system using fuzzy rules. A healthy person's tongue is red in color and has less tongue coating. However, when a person suffers from a disease, the color of their tongue changes from red to white, blue, or black. Therefore, it can analyze patient's health if analyze color and coated tongue of tongue. Medical diagnosis system can automatically determines the symptoms of the disease of a patient and their and calculate the optimal acupuncture time on the basis of the patient's physical conditions, illness conditions, and age from any place and at any time. The computer simulation results have shown that electro-acupuncture administered by using the medical diagnosis system developed in this study is more effective than the conventional method.

Design of E-Tongue System using Neural Network (신경회로망을 이용한 휴대용 전자 혀 시스템의 설계)

  • Jung, Young-Chang;Kim, Dong-Jin;Kim, Jeong-Do;Jung, Woo-Suk
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.6 no.2
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    • pp.149-158
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    • 2005
  • In this paper, we have designed and implemented a portable e-tongue (electronic tongue) system using MACS (multi array chemical sensor) and PDA. The system embedded in PDA has merits such as comfortable user interface and data transfer by internet from on-site to remote computer. MACS was made up 7 electrodes (${NH_4}^+$, $Na^+$, $Cl^-$, ${NO_3}^-$, $K^+$, $Ca^{2+}$, $Na^+$, pH) and a reference electrode. For learning the system, we adapted the Levenberg-Marquardt algorithm based on the back-propagation, which could iteratively learned the pre-determined standard patterns, in e-tongue system. Conclusionally, the relationship between the standard patterns and unknown pattern can be easily analyzed. The e-tongue was applied to whiskeys and cognac (one high level whisky, one low level whiskey, two cognac) and 2 sample whiskeys for each standard patterns and unknown patterns. The relationship between the standard patterns and unknown patterns can be easily analyzed.

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