Chinese flower bud can provide natural yellow pigment

A new study shows that the extract from L (Sophora japonica L.) can provide a natural yellow pigment rich in antioxidants and can be used in food The yellow pigment shows "perfect chemical stability," Chinese researchers report in the International Journal of food science and technology Dr Xiaohong Wang, from Hangzhou Agricultural University, China, pointed out that this result is very useful for its future investment in application and its business prospects in the food pigment industry Natural pigments are often used as food additives to improve color and stimulate appetite Synthetic pigments are often used in industry because of their bright colors, good stability and low cost But researchers point out that some synthetic pigments can have negative effects, such as making children over excited and producing inflammatory properties In general, natural pigments are safe and provide nutritional and pharmacological benefits Such as anti-oxidation and anti-inflammatory properties But natural pigments are rarely used in food processing because of their instability, high cost and storage problems The flower bud of Sophora L (Sophora rice) has been used for a long time as a traditional Chinese medicine The researchers pointed out that extracts from Sophora japonica, including natural pigments, are well known in Chinese folk, but their chemical properties have never been studied Systematic analysis of the Yellow Pigment from the latest study of Sophora japonica, the first study of its chemical structure, stability and potential use in food processing The yellow pigment extract of Sophora japonica (hype) was systematically studied by the method of spectral breadth measurement The relationship between its stability and pH value, temperature and metal ions was studied The main component of hype is flavonoids, in which the pigment contains 40% rutin PH is between 2.0 and 9.0 It is yellow when pH is 2.0 to 6.0, and hype will turn bright yellow when pH is more than 7 The accurate model shows that hype has good thermal stability and half-life of 918.9h at room temperature It is also reported that the presence of metal ions is beneficial to the pigmentation of HMPE, which will be beneficial to its application in the food industry The perfect stability researchers point out that hupe shows perfect chemical stability for food use - the widespread use of pigments in Chinese herbal medicines acknowledges the consistency of their results The researchers pointed out that hype has the potential to be a natural pigment in food, and further study on the stability of pigment in food model is needed Its potential as a natural pigment will be greatly provided, because the pigment contains high level of rutin The researchers added: at present, flavonoids are used as antioxidants in the food industry, and the high content of flavonoids will undoubtedly improve the use of HMPE.