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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">meat</journal-id><journal-title-group><journal-title xml:lang="en">Theory and practice of meat processing</journal-title><trans-title-group xml:lang="ru"><trans-title>Теория и практика переработки мяса</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2414-438X</issn><issn pub-type="epub">2414-441X</issn><publisher><publisher-name>ФГБНУ «Федеральный научный центр пищевых систем им. В.М. Горбатова» РАН</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21323/2414-438X-2022-7-3-150-155</article-id><article-id custom-type="elpub" pub-id-type="custom">meat-224</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Wireless pressure sensor system for fish quality monitoring</article-title><trans-title-group xml:lang="ru"><trans-title>Wireless pressure sensor system for fish quality monitoring</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2635-7206</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Mu</surname><given-names>B.</given-names></name><name name-style="western" xml:lang="en"><surname>Mu</surname><given-names>B.</given-names></name></name-alternatives><bio xml:lang="en"><p>Boyu Mu, Master, Beijing Laboratory of Food Quality and Safety, College of Engineering</p><p>Beijing 100083, PR China</p><p>Tel.: +86–188–6058–7671</p></bio><email xlink:type="simple">mby0527@cau.edu.cn</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8313-4105</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Nikitina</surname><given-names>M. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikitina</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Marina A. Nikitina, Doctor of technical sciences, docent, leading scientific worker, the Head of the Direction of Information Technologies of the Center of Economic and Analytical Research and Information Technologies</p><p>26, Talalikhina str., 109316, Moscow</p><p>Tel: +7–495–676–95–11 extension 297</p></bio><email xlink:type="simple">m.nikitina@fncps.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9512-4000</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Xiao</surname><given-names>X.</given-names></name><name name-style="western" xml:lang="en"><surname>Xiao</surname><given-names>X.</given-names></name></name-alternatives><bio xml:lang="en"><p>Xinqing Xiao, Doctor of Engineering, Associate Professor, Beijing Laboratory of Food Quality and Safety, College of Engineering</p><p>Beijing 100083</p><p>Tel.: +86–158–0122–7781</p></bio><email xlink:type="simple">xxqjd@cau.edu.cn</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>China Agricultural University</institution><country>China</country></aff><aff xml:lang="en" id="aff-2"><institution>V. M. Gorbatov Federal Research Center for Food Systems</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>14</day><month>10</month><year>2022</year></pub-date><volume>7</volume><issue>3</issue><fpage>150</fpage><lpage>155</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Mu B., Nikitina M.A., Xiao X., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Mu B., Nikitina M.A., Xiao X.</copyright-holder><copyright-holder xml:lang="en">Mu B., Nikitina M.A., Xiao X.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.meatjournal.ru/jour/article/view/224">https://www.meatjournal.ru/jour/article/view/224</self-uri><abstract><p>Food quality monitoring is increasingly important. This paper aims to propose the developed wireless pressure sensor system (WPSS) for fish quality monitoring. WPSS consists of a sensor acquisition module, power supply module, and Bluetooth module. The sensor acquisition module includes a temperature sensor, pressure sensor, and microcontroller unit (MCU). When Bluetooth receives the data collection command from the smartphone, the data of storage temperature and pressure in the food package can be collected by the sensor and transmitted wirelessly to the smartphone through Bluetooth. All data obtained by the system is monitored, stored, processed, and eventually displayed in a smartphone app in real-time to improve temperature, air pressure, and freshness transparency within the food package, ultimately ensuring food quality and safety. The proposed WPSS has potential application in many kinds of food monitoring. It can realize simple and intuitive food quality indications.</p></abstract><kwd-group xml:lang="en"><kwd>wireless sensing</kwd><kwd>pressure sensor</kwd><kwd>bluetooth communication</kwd><kwd>fish monitoring</kwd><kwd>food quality and safety</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Alam, A. U., Rathi, P., Beshai, H., Sarabha, G. K., Jamal Deen, M. (2021). Fruit quality monitoring with smart packaging. Sensors, 21(4), 1–30, Article 1509. https://doi.org/10.3390/s21041509</mixed-citation><mixed-citation xml:lang="en">Alam, A. U., Rathi, P., Beshai, H., Sarabha, G. K., Jamal Deen, M. (2021). Fruit quality monitoring with smart packaging. Sensors, 21(4), 1–30, Article 1509. https://doi.org/10.3390/s21041509</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Mu, B., Cao, G., Zhang, L., Zou, Y., Xiao, X. (2021). Flexible wireless pH sensor system for fish monitoring. Sensing and Bio-Sensing Research, 34, Article 100465. https://doi.org/10.1016/j.sbsr.2021.100465</mixed-citation><mixed-citation xml:lang="en">Mu, B., Cao, G., Zhang, L., Zou, Y., Xiao, X. (2021). Flexible wireless pH sensor system for fish monitoring. Sensing and Bio-Sensing Research, 34, Article 100465. https://doi.org/10.1016/j.sbsr.2021.100465</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Xiao, X., Mu, B., Cao, G., Yang, Y., Wang, M. (2022). Flexible battery-free wireless electronic system for food monitoring. Journal of Science: Advanced Materials and Devices, 7(2), Article 100430. https://doi.org/10.1016/j.jsamd.2022.100430</mixed-citation><mixed-citation xml:lang="en">Xiao, X., Mu, B., Cao, G., Yang, Y., Wang, M. (2022). Flexible battery-free wireless electronic system for food monitoring. Journal of Science: Advanced Materials and Devices, 7(2), Article 100430. https://doi.org/10.1016/j.jsamd.2022.100430</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Koutsoumanis, K., Tsaloumi, S., Aspridou, Z., Tassou, C., Gougouli, M. (2021). Application of quantitative microbiological risk assessment (QMRA) to food spoilage: Principles and methodology. Trends in Food Science and Technology, 114, 189–197. https://doi.org/10.1016/j.tifs.2021.05.011</mixed-citation><mixed-citation xml:lang="en">Koutsoumanis, K., Tsaloumi, S., Aspridou, Z., Tassou, C., Gougouli, M. (2021). Application of quantitative microbiological risk assessment (QMRA) to food spoilage: Principles and methodology. Trends in Food Science and Technology, 114, 189–197. https://doi.org/10.1016/j.tifs.2021.05.011</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Khaled, A. Y., Parrish, C. A., Adedeji, A. (2021). Emerging nondestructive approaches for meat quality and safety evaluation — A review. Comprehensive Reviews in Food Science and Food Safety, 20(4), 3438–3463. https://doi.org/10.1111/1541–4337.12781</mixed-citation><mixed-citation xml:lang="en">Khaled, A. Y., Parrish, C. A., Adedeji, A. (2021). Emerging nondestructive approaches for meat quality and safety evaluation — A review. Comprehensive Reviews in Food Science and Food Safety, 20(4), 3438–3463. https://doi.org/10.1111/1541–4337.12781</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Franco, M. R., da Cunha, L. R., Bianchi, R. F. (2021). Janus principle applied to food safety: An active two-faced indicator label for tracking meat freshness. Sensors and Actuators, B: Chemical, 333, Article 129466. https://doi.org/10.1016/j.snb.2021.129466</mixed-citation><mixed-citation xml:lang="en">Franco, M. R., da Cunha, L. R., Bianchi, R. F. (2021). Janus principle applied to food safety: An active two-faced indicator label for tracking meat freshness. Sensors and Actuators, B: Chemical, 333, Article 129466. https://doi.org/10.1016/j.snb.2021.129466</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Ye, P., Li, X., Xie, Y. -N., Wu, P. (2022). Facile monitoring of meat freshness with a self-constructed photosensitization colorimetric instrument. Food Chemistry, 385, Aticle 132676. https://doi.org/10.1016/j.foodchem.2022.132676</mixed-citation><mixed-citation xml:lang="en">Ye, P., Li, X., Xie, Y. -N., Wu, P. (2022). Facile monitoring of meat freshness with a self-constructed photosensitization colorimetric instrument. Food Chemistry, 385, Aticle 132676. https://doi.org/10.1016/j.foodchem.2022.132676</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Alizadeh-Sani, M., Tavassoli, M., Mohammadian, E., Ehsani, A., Khaniki, G. J., Priyadarshi, R. et al. (2021). pH-responsive color indicator films based on methylcellulose/chitosan nanofiber and barberry anthocyanins for real-time monitoring of meat freshness. International Journal of Biological Macromolecules, 166, 741–750. https://doi.org/10.1016/j.ijbiomac.2020.10.231</mixed-citation><mixed-citation xml:lang="en">Alizadeh-Sani, M., Tavassoli, M., Mohammadian, E., Ehsani, A., Khaniki, G. J., Priyadarshi, R. et al. (2021). pH-responsive color indicator films based on methylcellulose/chitosan nanofiber and barberry anthocyanins for real-time monitoring of meat freshness. International Journal of Biological Macromolecules, 166, 741–750. https://doi.org/10.1016/j.ijbiomac.2020.10.231</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Erfiza, N. M., Purba, N. R., Ahda, K., Sulaiman, I., Rohaya, S., Razi, F. (September 21, 2021). Characterization of tannin based colorimetric indicator and its application on fish packaging. Paper presented at the IOP Conference Series: Earth and Environmental Science, Banda Aceh, Indonesia, 922(1), Article 012057. https://doi.org/10.1088/1755–1315/922/1/012057</mixed-citation><mixed-citation xml:lang="en">Erfiza, N. M., Purba, N. R., Ahda, K., Sulaiman, I., Rohaya, S., Razi, F. (September 21, 2021). Characterization of tannin based colorimetric indicator and its application on fish packaging. Paper presented at the IOP Conference Series: Earth and Environmental Science, Banda Aceh, Indonesia, 922(1), Article 012057. https://doi.org/10.1088/1755–1315/922/1/012057</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Lee, B. -H., Wu, S. -C., Shen, T. -L., Hsu, Y. -Y., Chen, C. -H., Hsu, W. -H. (2021). The applications of lactobacillus plantarumderived extracellular vesicles as a novel natural antibacterial agent for improving quality and safety in tuna fish. Food Chemistry, 340, Article 128104. https://doi.org/10.1016/j.foodchem.2020.128104</mixed-citation><mixed-citation xml:lang="en">Lee, B. -H., Wu, S. -C., Shen, T. -L., Hsu, Y. -Y., Chen, C. -H., Hsu, W. -H. (2021). The applications of lactobacillus plantarumderived extracellular vesicles as a novel natural antibacterial agent for improving quality and safety in tuna fish. Food Chemistry, 340, Article 128104. https://doi.org/10.1016/j.foodchem.2020.128104</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Bekhit, A. E. -D. A., Holman, B. W. B., Giteru, S. G., Hopkins, D. L. (2021). Total volatile basic nitrogen (TVB-N) and its role in meat spoilage: A review. Trends in Food Science and Technology, 109, 280–302. https://doi.org/10.1016/j.tifs.2021.01.006</mixed-citation><mixed-citation xml:lang="en">Bekhit, A. E. -D. A., Holman, B. W. B., Giteru, S. G., Hopkins, D. L. (2021). Total volatile basic nitrogen (TVB-N) and its role in meat spoilage: A review. Trends in Food Science and Technology, 109, 280–302. https://doi.org/10.1016/j.tifs.2021.01.006</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Ma, Q., Lu, X., Wang, W., Hubbe, M. A., Liu, Y., Mu, J. et al. (2021). Recent developments in colorimetric and optical indicators stimulated by volatile base nitrogen to monitor seafood freshness. Food Packaging and Shelf Life, 28, Article 100634. https://doi.org/10.1016/j.fpsl.2021.100634</mixed-citation><mixed-citation xml:lang="en">Ma, Q., Lu, X., Wang, W., Hubbe, M. A., Liu, Y., Mu, J. et al. (2021). Recent developments in colorimetric and optical indicators stimulated by volatile base nitrogen to monitor seafood freshness. Food Packaging and Shelf Life, 28, Article 100634. https://doi.org/10.1016/j.fpsl.2021.100634</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Qiao, T., Ren, J., Craigie, C., Zabalza, J., Maltin, C., Marshall, S. (2015). Singular spectrum analysis for improving hyperspectral imaging based beef eating quality evaluation. Computers and Electronics in Agriculture, 115, 21–25. https://doi.org/10.1016/j.compag.2015.05.007</mixed-citation><mixed-citation xml:lang="en">Qiao, T., Ren, J., Craigie, C., Zabalza, J., Maltin, C., Marshall, S. (2015). Singular spectrum analysis for improving hyperspectral imaging based beef eating quality evaluation. Computers and Electronics in Agriculture, 115, 21–25. https://doi.org/10.1016/j.compag.2015.05.007</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Castro-Giráldez, M., Botella, P., Toldrá, F., Fito, P. (2010). Lowfrequency dielectric spectrum to determine pork meat quality. Innovative Food Science and Emerging Technologies, 11(2), 376–386. https://doi.org/10.1016/j.ifset.2010.01.011</mixed-citation><mixed-citation xml:lang="en">Castro-Giráldez, M., Botella, P., Toldrá, F., Fito, P. (2010). Lowfrequency dielectric spectrum to determine pork meat quality. Innovative Food Science and Emerging Technologies, 11(2), 376–386. https://doi.org/10.1016/j.ifset.2010.01.011</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Semeano, A. T. S., Maffei, D. F., Palma, S., Li, R. W. C., Franco, B. D. G. M., Roque, A. C. A. et al. (2018). Tilapia fish microbial spoilage monitored by a single optical gas sensor. Food Control, 89, 72–76. https://doi.org/10.1016/j.foodcont.2018.01.025</mixed-citation><mixed-citation xml:lang="en">Semeano, A. T. S., Maffei, D. F., Palma, S., Li, R. W. C., Franco, B. D. G. M., Roque, A. C. A. et al. (2018). Tilapia fish microbial spoilage monitored by a single optical gas sensor. Food Control, 89, 72–76. https://doi.org/10.1016/j.foodcont.2018.01.025</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Gu, S., Chen, W., Wang, Z., Wang, J., Huo, Y. (2020). Rapid detection of aspergillus spp. infection levels on milled rice by headspace-gas chromatography ion-mobility spectrometry (HSGC–IMS) and E-nose. LWT, 132, Article 109758. https://doi.org/10.1016/j.lwt.2020.109758</mixed-citation><mixed-citation xml:lang="en">Gu, S., Chen, W., Wang, Z., Wang, J., Huo, Y. (2020). Rapid detection of aspergillus spp. infection levels on milled rice by headspace-gas chromatography ion-mobility spectrometry (HSGC–IMS) and E-nose. LWT, 132, Article 109758. https://doi.org/10.1016/j.lwt.2020.109758</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">John, A. T., Murugappan, K., Nisbet, D. R., Tricoli, A. (2021). An outlook of recent advances in chemiresistive sensor-based electronic nose systems for food quality and environmental monitoring. Sensors, 21(7), Article 2271. https://doi.org/10.3390/s21072271</mixed-citation><mixed-citation xml:lang="en">John, A. T., Murugappan, K., Nisbet, D. R., Tricoli, A. (2021). An outlook of recent advances in chemiresistive sensor-based electronic nose systems for food quality and environmental monitoring. Sensors, 21(7), Article 2271. https://doi.org/10.3390/s21072271</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Scheier, R., Schmidt, H. (2013). Measurement of the pH value in pork meat early postmortem by raman spectroscopy. Applied Physics B: Lasers and Optics, 111(2), 289–297. https://doi.org/10.1007/s00340–012–5332-y</mixed-citation><mixed-citation xml:lang="en">Scheier, R., Schmidt, H. (2013). Measurement of the pH value in pork meat early postmortem by raman spectroscopy. Applied Physics B: Lasers and Optics, 111(2), 289–297. https://doi.org/10.1007/s00340–012–5332-y</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Pereira, P. F. M., de Sousa Picciani, P. H., Calado, V., Tonon, R. V. (2021). Electrical gas sensors for meat freshness assessment and quality monitoring: A review. Trends in Food Science and Technology, 118, 36–44. https://doi.org/10.1016/j.tifs.2021.08.036</mixed-citation><mixed-citation xml:lang="en">Pereira, P. F. M., de Sousa Picciani, P. H., Calado, V., Tonon, R. V. (2021). Electrical gas sensors for meat freshness assessment and quality monitoring: A review. Trends in Food Science and Technology, 118, 36–44. https://doi.org/10.1016/j.tifs.2021.08.036</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Biasizzo, A., Korousic Seljak, B., Valencic, E., Pavlin, M., Zarnik, M. S., Blazica, B. et al. (2021). An open-source approach to solving the problem of accurate food-intake monitoring. IEEE Access, 9, 162835–162846. https://doi.org/10.1109/ACCESS.2021.3128995</mixed-citation><mixed-citation xml:lang="en">Biasizzo, A., Korousic Seljak, B., Valencic, E., Pavlin, M., Zarnik, M. S., Blazica, B. et al. (2021). An open-source approach to solving the problem of accurate food-intake monitoring. IEEE Access, 9, 162835–162846. https://doi.org/10.1109/ACCESS.2021.3128995</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Hasan, M. M., Rafiul Islam, M., Ahmed, W., Saqib, M. M., Rafi Rahman, M., Uddin, M. R. et al. (July 8–9, 2021). Cost effective bluetooth technology based emergency medical ventilator for respiratory support. Paper presented at the 2021 International Conference on Automation, Control and Mechatronics for Industry 4.0, ACMI 2021, Rajshahi, Bangladesh. https://doi.org/10.1109/ACMI53878.2021.9528262</mixed-citation><mixed-citation xml:lang="en">Hasan, M. M., Rafiul Islam, M., Ahmed, W., Saqib, M. M., Rafi Rahman, M., Uddin, M. R. et al. (July 8–9, 2021). Cost effective bluetooth technology based emergency medical ventilator for respiratory support. Paper presented at the 2021 International Conference on Automation, Control and Mechatronics for Industry 4.0, ACMI 2021, Rajshahi, Bangladesh. https://doi.org/10.1109/ACMI53878.2021.9528262</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Romanov, V., Galelyuka, I., Voronenko, O. (September 22–25, 2021). WSN for food product quality control. Paper presented at the Proceedings of the 11th IEEE International Conference on Intel ligent Data Acquisition and Advanced Computing Systems: Technology and Applications, IDAACS2021, Cracow, Poland, 1 580–583. https://doi.org/10.1109/IDAACS53288.2021.9660852</mixed-citation><mixed-citation xml:lang="en">Romanov, V., Galelyuka, I., Voronenko, O. (September 22–25, 2021). WSN for food product quality control. Paper presented at the Proceedings of the 11th IEEE International Conference on Intel ligent Data Acquisition and Advanced Computing Systems: Technology and Applications, IDAACS2021, Cracow, Poland, 1 580–583. https://doi.org/10.1109/IDAACS53288.2021.9660852</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Mubarak, Y., Nyitamen, D., Na’inna, A. (July 15–16, 2021). Implementation of microcontroller based water quality monitoring system for fish pond using solar power and bluetooth technology. Paper presented at the 2021 1st International Conference on Multidisciplinary Engineering and Applied Science, ICMEAS2021, Abuja, Nigeria. https://doi.org/10.1109/ICMEAS52683.2021.9692392</mixed-citation><mixed-citation xml:lang="en">Mubarak, Y., Nyitamen, D., Na’inna, A. (July 15–16, 2021). Implementation of microcontroller based water quality monitoring system for fish pond using solar power and bluetooth technology. Paper presented at the 2021 1st International Conference on Multidisciplinary Engineering and Applied Science, ICMEAS2021, Abuja, Nigeria. https://doi.org/10.1109/ICMEAS52683.2021.9692392</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">GB5009.228–2016 National Food Safety Standard — Determination of Volatile Basic Nitrogen in Food (English Version). Retrieved from https://codeofchina.com/standard/GB5009.228–2016.html Accessed May 15, 2022</mixed-citation><mixed-citation xml:lang="en">GB5009.228–2016 National Food Safety Standard — Determination of Volatile Basic Nitrogen in Food (English Version). Retrieved from https://codeofchina.com/standard/GB5009.228–2016.html Accessed May 15, 2022</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Do, H.-D., Kim, D.-E., Lam, M. B., Chung, W.-Y. (2021). Selfpowered food assessment system using LSTM Network and 915 MHz RF energy harvesting. IEEE Access, 9, 97444–97456, Article 9476040. https://doi.org/10.1109/ACCESS.2021.3095271</mixed-citation><mixed-citation xml:lang="en">Do, H.-D., Kim, D.-E., Lam, M. B., Chung, W.-Y. (2021). Selfpowered food assessment system using LSTM Network and 915 MHz RF energy harvesting. IEEE Access, 9, 97444–97456, Article 9476040. https://doi.org/10.1109/ACCESS.2021.3095271</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Nguyen, T.-B., Tran, V.-T., Chung, W.-Y. (2019). Pressure measurement-based method for battery-free food monitoring powered by NFC energy harvesting. Scientific Reports, 9(1), Article 17556. https://doi.org/10.1038/s41598–019–53775–1</mixed-citation><mixed-citation xml:lang="en">Nguyen, T.-B., Tran, V.-T., Chung, W.-Y. (2019). Pressure measurement-based method for battery-free food monitoring powered by NFC energy harvesting. Scientific Reports, 9(1), Article 17556. https://doi.org/10.1038/s41598–019–53775–1</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
