کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1187698 963471 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A screening method for the determination of ascorbic acid in fruit juices and soft drinks
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
A screening method for the determination of ascorbic acid in fruit juices and soft drinks
چکیده انگلیسی

A simple and rapid liquid chromatographic method based on a new stationary phase Teknokroma, Tr-010065 Mediterranea sea18 (15 cm × 0.4 cm, id 3 μm), to determine ascorbic acid in beverages is reported. With the proposed method the samples were analysed by direct injection without a previous treatment. The total analysis time does not exceed 6 min. The method showed a good repeatability (RSD < 2%: n = 6) and an excellent sensitivity (LOD = 0.01 mg/l). Seventeen samples were analysed, including fruit juices, soft drinks and isotonic beverages. Ascorbic acid contents ranged from 6.6 to 840 mg/l. The ascorbic acid stability in some beverages during their shelf-life was also evaluated. Degradation of about 54% was observed in a tea drink.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 116, Issue 2, 15 September 2009, Pages 509–512
نویسندگان
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