当我们将嫁接後的龙葵菓实内的种籽取出时,给一种紫色的液汁染污了双手,擦上肥皂洗手却变成的绿色(其中还带点蓝色),这个无意中发现的反应引起了我们的注意。经过研究之後,现在我们已经证实了龙葵菓肉中紫色的色素可以代替石蕊色质。据我们所瞭解,各地都有野生的龙葵菓,特别是菜园和房屋附近最多,甚至院墙上或屋顶都能生长。如果全国各地的学校或化学斫究机关都采用这种不必用钱去买的自然色素来代替石蕊色质,是很 When we removed the seeds from the grafted Solanum nigrum fruit, we stained both hands with a purple juice and rubbed it with green soap (which also had a little blue color), which was unwittingly discovered The reaction caught our attention. After research, now we have confirmed that the purple pigment of Solanum nigrum can replace the color of litmus. As far as we know, there are wild Solanum nigra in all parts of the country, especially in the vicinity of vegetable gardens and houses, and even the walls or roofs of courtyards. If the school or chemical research institutes across the country are using this kind of natural pigment instead of money to buy instead of litmus color is very