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Ascorbic Acid Determination in Commercial Fruit Juice Samples by Cyclic Voltammetry
المؤلفون المشاركون
Danet, Andrei Florin
Kalinowski, Slawomir
Pisoschi, Aurelia Magdalena
المصدر
Journal of Automated Methods and Management in Chemistry
العدد
المجلد 2008، العدد 2008 (31 ديسمبر/كانون الأول 2008)، ص ص. 1-8، 8ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2009-03-29
دولة النشر
مصر
عدد الصفحات
8
التخصصات الرئيسية
الملخص EN
A method was developed for assessing ascorbic acid concentration in commercial fruit juice by cyclic voltammetry.
The anodic oxidation peak for ascorbic acid occurs at about 490 mV on a Pt disc working electrode (versus SCE).
The influence of the potential sweep speed on the peak height was studied.
The obtained calibration graph shows a linear dependence between peak height and ascorbic acid concentration in the domain (0.1–10 mmol⋅L−1).
The equation of the calibration graph was y=6.391x+0.1903 (where y represents the value of intensity measured for the anodic peak height, expressed as μA and x the analyte concentration, as mmol⋅L−1, r2=0.9995, r.s.d.=1.14%, n=10, Cascorbic acid=2 mmol⋅L−1).
The developed method was applied to ascorbic acid assessment in fruit juice.
The ascorbic acid content determined ranged from 0.83 to 1.67 mmol⋅L−1 for orange juice, from 0.58 to 1.93 mmol⋅L−1 for lemon juice, and from 0.46 to 1.84 mmol⋅L−1 for grapefruit juice.
Different ascorbic acid concentrations (from standard solutions) were added to the analysed samples, the degree of recovery being comprised between 94.35% and 104%.
Ascorbic acid determination results obtained by cyclic voltammetry were compared with those obtained by the volumetric method with dichlorophenol indophenol.
The results obtained by the two methods were in good agreement.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Pisoschi, Aurelia Magdalena& Danet, Andrei Florin& Kalinowski, Slawomir. 2009. Ascorbic Acid Determination in Commercial Fruit Juice Samples by Cyclic Voltammetry. Journal of Automated Methods and Management in Chemistry،Vol. 2008, no. 2008, pp.1-8.
https://search.emarefa.net/detail/BIM-509687
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Pisoschi, Aurelia Magdalena…[et al.]. Ascorbic Acid Determination in Commercial Fruit Juice Samples by Cyclic Voltammetry. Journal of Automated Methods and Management in Chemistry No. 2008 (2008), pp.1-8.
https://search.emarefa.net/detail/BIM-509687
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Pisoschi, Aurelia Magdalena& Danet, Andrei Florin& Kalinowski, Slawomir. Ascorbic Acid Determination in Commercial Fruit Juice Samples by Cyclic Voltammetry. Journal of Automated Methods and Management in Chemistry. 2009. Vol. 2008, no. 2008, pp.1-8.
https://search.emarefa.net/detail/BIM-509687
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-509687
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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