Extraction and Determination of Resveratrol in Apple Skin
Flavonoids are widely found in plants,fruits and vegetables,and are important antioxidant substances.In recent years,studies have found that flavonoids have a strong ability to scavenge free radicals,while apple peel contains phenols,flavonoids and other bioactive substances,which play a great role,especially in the prevention of chronic diseases such as coronary heart disease and cardiovascular disease.It can also reduce the incidence of disease.If a small amount of apple peel powder is added to food,the content of polyphenols and flavonoids in food can be increased,so that apple peel powder can be used as a food additive in the production of fortified food,which not only makes reasonable use of resources,increases the value of the apple industry,but also reduces environmental pollution,so it has great potential value and significance.In the experiment,the skin of red Fuji apple was selected as raw material,the total flavonoids in the skin were extracted by organic solvo-ethanol,and the content was determined by UV-spectrophotometry.At the same time,the control variable method was used to analyze the conditions affecting the yield of total flavonoids in the apple peel.The optimal conditions were selected by orthogonal test.The ratio of solid to liquid was 1:45(g:mL),the concentration of ethanol was 75％,the extraction temperature was 65 ℃ and the extraction time was 2 h.The content of total flavonoids in apple peel was measured as 4.875％.
apple skinflavonoidsextractiondetermination of content
万方数据
维普
