Abstract
Rape is a one of the most important and perspective plant for oil world production, and rape oil has a high biological value due to high ratio of ω-3: ω-6 polyunsaturated fatty acids. Quality parameters of rape oil obtained by cold pressing from rape seeds of spring and winter varieties have been analyzed in this work. It was shown that rape oils obtained by cold pressing had low content of free fatty acids and unessential content of peroxide substances. The induction period and antioxidant concentration in oils from spring and winter varieties have been also studied in this work. The data obtained have shown that antioxidant stability of winter rape oil obtained by cold pressing was slightly higher than stability of spring rape oil.
Highlights
Rape is a one of the most important and perspective plant for oil world production
Nutritive and biological values of rape oil are caused by its composition, first of all by fatty acid composition
Wide using of edible rape oil had become possible since 1961 year, when new rape varieties, which did not contain erucic acid negatively influencing on human organism, were selected in Canada [2,7,9]
Summary
Для сравнения двух методов применили статистический критерий F-распределения, который позволяет сравнивать величины стандартных отклонений двух рядов наблюдений. Приведенных на рисунке 3: ПОВЭЖХ = 3,3 × SD/ВВЭЖХ = 3,3 × 1,17544/21,88814 = 0,18 мкг/мл. Результаты определения и метрологические характеристики разработанных методик количественного определения красителя Е110 в напитке. Полученные данные указывают на согласование результатов, полученных двумя разными методами. Пределов обнаружения, относительных стандартных отклонений также можно сделать вывод об удовлетворительном согласовании результатов, полученных с помощью двух разных разработанных методик. Что методика ВЭЖХ-определения красителя Е110 в напитке «Оранж» по сравнению со спектрофотометрией более чувствительна, дает лучшую сходимость результатов, в силу хроматографического разделения компонентов существенно более селективна. Таблица 1 – Результаты определения красителя Е110 в напитке безалкогольном сильногазированном «Оранж» (P=0.95)
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