توسعه یک سامانه زبان الکترونیک مبتنی بر الکترود گلسی‌کربن به منظور کمیت‌سنجی اسید اسکوربیک

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشگاه تهران

چکیده

آب میوه­ها به سبب داشتن ویتامین­های ضروری از دیدگاه سلامت دارای منافع زیادی برای انسان می­باشند لذا به شدت در معرض تقلب و ناخالصی می­باشند. از طرف دیگر ترکیب­های پیچیده موجود در مواد غذایی، تعیین محتوای کیفی و کمی آن­ها را مشکل ساخته است. استفاده از روش­های شیمیایی برای اندازه­گیری و تشخیص ترکیبات پیچیده اغلب وقت‌گیر و هزینه‌بر می­باشند. در حال حاضر فناوری زبان الکترونیک، چشم انداز امیدوار کننده‌ای را در در خصوص کنترل کیفی و تشخیص اصالت محصول نشان داده است لذا کاربرد گسترده­ای در صنایع غذایی پیدا کرده­ است. در این پژوهش، یک سامانه زبان الکترونیک مبتنی بر الکترود کاری گلسی‌کربن و تکنیک ولتامتری چرخه­ای برای کمیت سنجی اسید اسکوربیک به کار گرفته‌شده است. نتایج نشان داد همبستگی خطی مطلوبی (y=0.0622x-1.1547, R2=0.998) میان تغییرات غلظت اسید اسکوربیک و جریان پیک کاتدی آن وجود دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Development of an electronic tongue based on glassy carbon electrode for quantification of ascorbic acid

نویسندگان [English]

  • Mohammad Jafar Dalvand
  • Shahin Rafiee
Student
چکیده [English]

Fruit juices has many benefits to human health due to the essential vitamins, they are vulnerable to fraud and gross. The compounds in food are found complex, so it is difficult to determine the quantitative and qualitative content values. The use of chemical methods to measure and recognize the complex compounds are often time-consuming and relatively expensive. Recently electronic tongue widely used in the food industry in particular have shown promising outlook for demonstrating the quality and originality of the product. In this study, an electronic tongue system based on glassy carbon electrodes and cyclic voltammetry is used for quantification of ascorbic acid. The results indicated that the proposed electronic tongue is able to quantify ascorbic acid. Furthermore, the results revealed good correlation (y=0.0622x-1.1547,R^2=0.998) between ascorbic acid concentration and cathodic peak current.

کلیدواژه‌ها [English]

  • Fruit juice
  • Electronic Tongue
  • Ascorbic acid
  • cathodic peak
  • voltammogram
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