ACADSTAFF UGM
| Title | : | Development of Electronic Nose with Highly Stable Sample Heater to Classify Quality Levels of Local Black Tea |
| Author | : |
Dr. Danang Lelono, S.Si., M.T. (1) Prof. Dr. Eng. Kuwat Triyana, M.Si. (2) Prof. Dra. Sri Hartati, M.Sc., Ph.D. (3) |
| Date | : | 0 2017 |
| Keyword | : | Electronic Nose,Black Tea ,Quality Level Electronic Nose,Black Tea ,Quality Level |
| Abstract | : | an electronic nose (e-nose) based on a gas sensor array equipped with a stable temperature controller has been successfully developed by applying proportional–integral–derivative (PID) controller. This study was motivated due to the dependence of sensor response on the temperature of a sample. Here, the temperature influences the volatile organic compounds (VOC) of the sample. The performance of the e-nose was then evaluated to classify the quality levels of black tea (Q1, Q2, and Q3). The black tea samples were purchased from Tambi Tea Industry in Central Java, Indonesia. Here, the quality is based on the information from the factory. For each quality level, the measurement was repeated 31 times. Therefore, the total of measurements is 93, and only six sensors, i.e. MQ-7, TGS 813, TGS 2602, TGS 826, TGS 2620 and TGS 825 have the high influence on the patterns differentiation. It is found that the e-nose is not able to distinguish the three quality levels of black tea correctly when applying without heating treatment. In this condition, only 88.9% of cross-validated grouped are correctly classified. On the other hand, for the black tea sample with unstable heating, the performance of the e-nose has been improved. In this case, 92.5% of crossvalidated grouped are correctly classified. Moreover, for the black tea sample with stable heating treatment, all samples are separated where 97.8% of cross-validated grouped are correctly classified. The results indicated that the e-nose with the highly stable heater was capable of detecting the quality of black tea. |
| Group of Knowledge | : | Teknik Elektronika |
| Original Language | : | English |
| Level | : | Internasional |
| Status | : |
Published
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