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بررسی امکان سنجش غلظت ساکاروز در نیشکر شریدر شده با استفاده از روش طیفسنجی دی-الکتریک | ||
| تحقیقات سامانه‌ها و مکانیزاسیون کشاورزی | ||
| دوره 24، شماره 86، خرداد 1403، صفحه 59-80 اصل مقاله (2.38 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/amsr.2024.364936.1477 | ||
| نویسندگان | ||
| علی فرحمندی1؛ مجتبی نادری بلداجی* 2؛ مارال عجمیان3؛ مهدی قاسمی ورنامخواستی4؛ سامان آبدانان مهدی زاده* 5 | ||
| 1دانشجوی دکتری گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شهرکرد، ایران | ||
| 2دانشیار گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شهرکرد، ایران | ||
| 3دکتری، موسسه تحقیقات و آموزش توسعه نیشکر و صنایع جانبی خوزستان، اهواز، ایران | ||
| 4دانشیار گروه مهندسی مکانیک بیوسیستم، دانشکده کشاورزی، دانشگاه شهرکرد، ایران | ||
| 5دانشیار گروه مهندسی بیوسیستم، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی، اهواز، ایران | ||
| چکیده | ||
| نیشکر محصولی است کلیدی در تولید شکر کشور که قطب تولید آن در استان خوزستان است. پس از برداشت از مزرعه و ورود آن به کارخانه، نیشکر با استفاده از دستگاه شریدر خرد و الیافی میشود. در این مطالعه، برای سنجش ساکاروز موجود در نیشکر شرید شده، روش طیفسنجی دیالکتریک در بازه بسامد صفر تا صد مگاهرتز با استفاده از حسگر دیالکتریک استوانهای با قابلیت تراکم نمونه ارزیابی شد. تعداد 55 نمونه نیشکر شرید شده در فصل برداشت نیشکر در سال 1400 از فرایند تولید کارخانۀ شکر خام سلمان فارسی خوزستان تهیه شد و ضمن اندازهگیری شاخصهای بریکس با روش رفرکتومتری، Pol با روش پلاریمتری ساده و درصد ساکاروز با روش پلاریمتری مضاعف، نمونهها با حسگر دیالکتریک مورد سنجش قرار گرفت و طیفهای حاصل از آن برای سنجش میزان شاخصههای غلظت قند (به عنوان متغیرهای وابسته) تحلیل شد. از روشهای رگرسیونی چند متغیره حداقل مربعات جزیی (PLSR)، رگرسیون مولفههای اصلی (PCR) و رگرسیون ماشین بردار پشتیبان (SVR) برای توسعۀ مدلهای پیشبینی متغیرهای غلظت استفاده شد. اعتبارسنجی مدل پیشبینی PLSR پیشبینی قویتری از درصد ساکاروز حاصل از روش پلاریمتری مضاعف (79/0 R2=، 75/0 RMSE= و 22/2RPD=) در مقایسه با Pol (76/0 R2=، 8/0 RMSE= و 07/2RPD=) و بریکس (77/0 R2=، 89/0 RMSE= و 2RPD=) نشان داد. این نتیجه با سهم بیشتر قند ساکاروز در مواد انحلالپذیر در عصاره نیشکر و تعداد گروههای بیشتر OH مولکول ساکاروز در مقایسه با دیگر قندهای موجود در عصاره و تأثیر غالب ساکاروز بر خصوصیات دیالکتریک عصارۀ نیشکر قابل توجیه است. با بهینهسازی و بهبود دقت سنجش این روش میتوان ابزاری ساده و کم هزینه برای استفاده در صنایع شکر ارائه داد. | ||
| کلیدواژه‌ها | ||
| پلاریمتری مضاعف؛ حسگر دیالکتریک؛ غلظت قند؛ نیشکر | ||
| عنوان مقاله [English] | ||
| Feasibility Study of Measuring Sucrose Concentration in shredded Cane using Dielectric Spectroscopy Method | ||
| نویسندگان [English] | ||
| Ali Farahmandi1؛ Mojtaba Naderi-Boldaji2؛ Maral Ajamian3؛ Mahdi Ghasemi-Varnamkhasti4؛ Saman Abdanan5 | ||
| 1Ph. D. Student Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, Shahrekord University | ||
| 2Associate Professor, Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran | ||
| 3Khuzestan Sugarcane and By-products Development Research and Training Institude, Ahvaz, Iran | ||
| 4Associate Professor, Department of Mechanical Engineering of Biosystems, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran | ||
| 5Associate Professor, Khuzestan University of Agricultural sciences and natural resources | ||
| چکیده [English] | ||
| Sugarcane, an important crop in sugar production in the country, is widely produced in Khuzestan province. After harvesting the sugarcane and when delivered to the sugar factory, the cane is shredded. In this study, for measurement of sucrose concentration in shredded cane, the dielectric spectroscopy technique in the frequency range of 0-100 MHz was evaluated using a cylindrical parallel-plate sensor with compaction of the shredded cane. 55 samples of shredded cane were taken from the sugar production line of Salman Farsi factory during the harvesting season of 2021-2022 and their reference properties including sugar concentration with three indicators of Brix using refractometry method, Pol using simple polarimetry method and the sucrose measured using double polarimetry were measured. The samples were subjected to dielectric spectroscopy using the capacitance sensor and the dielectric spectra were analyzed for sugar concentration prediction. Multivariate regression analyses of partial least-sugare regresseion (PLSR), principal component regression (PCR) and support vector regression (SVR) were applied for development of prediction models of sugar concentration variables. Validation of the prediction model of PLSR showed a stronger prediction of sucrose (R2= 0.79, RMSE= 0.89, RPD= 2.22) measured using the double-polarimetry as compared to Pol (R2= 0.76, RMSE= 0.8, RPD= 2.07) and Brix (R2= 0.77, RMSE= 0.89, RPD= 2). This result was explained with higher number of OH groups of sucrose molecule as compared to the other sugars existing in the sugarcane juice and the dominant effect of sucrose on the dielectric characteristics of the juice. With optimization and improvement of the accuracy of this method, a simple and cost-effective instrument can be developed for use in sugar industries. | ||
| کلیدواژه‌ها [English] | ||
| Dielectric Sensor, Double Polarimetry, Sugar Concentration, Sugarcane | ||
| مراجع | ||
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