|
|
|
|
new perspectives of quantum dots in the food field: determination of β-carotene in tropical fruit juices and food supplements
|
|
|
|
|
|
|
|
نویسنده
|
jiménez-lópez j. ,santos j.l.m. ,ortega-barrales p. ,ruiz-medina a.
|
|
منبع
|
food analytical methods - 2017 - دوره : 10 - شماره : 7 - صفحه:2412 -2421
|
|
چکیده
|
A novel and simple method for the determination of β-carotene, a carotenoid abundant in plants and fruits, is proposed. multicommutated flow injection analysis (mcfia) has been applied as automated flow methodology to the analysis of β-carotene in tropical fruit juices and food supplements, making use of the quenching effect caused by this analyte over glutathione-capped cdte quantum dots (qds) fluorescence signal. under optimized conditions, the method was linear in the range of 0.3–15 μg ml−1, with a detection limit of 0.09 μg ml−1 and relative standard deviations lower than 3%. the determination rate was of about 80 h−1, and results were in good agreement with those provided by both the manufacturer and a chromatographic reference method.
|
|
کلیدواژه
|
β-carotene ,luminescence ,glutathione-capped cdte quantum dots ,fruit juices ,food supplements
|
|
آدرس
|
university of jaén, campus de las lagunillas, faculty of experimental sciences, department of physical and analytical chemistry, spain, porto university, faculty of pharmacy, laboratory of applied chemistry, department of chemical sciences, portugal, university of jaén, campus de las lagunillas, faculty of experimental sciences, department of physical and analytical chemistry, spain, university of jaén, campus de las lagunillas, faculty of experimental sciences, department of physical and analytical chemistry, spain
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Authors
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|