کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5132505 | 1492052 | 2018 | 7 صفحه PDF | دانلود رایگان |
- We validated the HPAEC for determining the content of NO2 and NO3 in feed products.
- We evaluated the content of NO2 and NO3 in beet pulp, raw beet juice and molasses.
- Some of analysed samples would not meet the requirements of Directive 2010/6/EU.
In 2010, the Directive on undesirable substances in animal feed entered into force and for the first time was laid down a maximum limit for nitrite content in sugar industry feed materials such as molasses and beet pulp. Due to a lack of suitable analytical methods for nitrite determination, this study was developed with the aim to standardize a nitrite analytical method in by-products from sugar industry.In this study high performance anion exchange chromatography with conductometric detection was used for determining nitrite and nitrate content of sugar by-products included in feed material.The study confirms the usefulness of the applied ion chromatographic method for the evaluation of the content of nitrite and nitrate in sugar by-products.The results showed that in many samples of beet pulp and molasses the content of “undesirable substances for animal feed” was below 15 mg kgâ1 (expressed as sodium nitrate at 12% of moisture).
Journal: Food Chemistry - Volume 240, 1 February 2018, Pages 648-654