The food is also a dye2011.10.26 08:53
Institute of Food Science and Technology, Nanjing Agricultural University's Professor Han Yongbin unexpected finding in the study of vegetables, grain in bright colors,
That bright purple sweet potato color, people looked liked, but for a slight knowledge of the plant color people know that if the natural food pigment extracted, then the color is almost because many pigment structure is unstable, it will break down when exposed to light.
Professor Han Yongbin said the near future,nological breakthroughs may make purple sweet potato red a long time to save, then stained with purple potato magic lipstick will come into our lives.
, and in fact, vegetable dyes have been used in China for thousands of years. Ancient literature of the dye records, dating back to the Xia Dynasty earlier. Until the Warring States period, China's grass dyeing technology is quite mature, the use of dyed grass are: blue grass, madder, Lithospermum, etc.
Nanjing Institute of expert utilization of wild plants in the study found that many dye plants also the role of both herbs or evil, blue grass has bactericidal and detoxification, bleeding swelling effect; wormwood is good fortune in the role of civil society. More importantly, some plant dyes dyeing effect is not worse than the chemical dyes, for example, we often wear jeans, in the future can use Radix extract of indigo replaced.
By Sun Yamin