left as untreated bamboo leaves boiled dumplings soup; right is copper sulfate soaked bamboo leaves cook the soup dumplings.
crystalline copper sulfate hydrate known alum.
every Dragon Boat Festival, the people who will eat a few dumplings, fresh bamboo leaves will pack into the dumplings taste better, but some unscrupulous traders is the public who spotted this mind, in on the idea of playing a crooked bamboo leaves, bamboo leaves will turn yellow again has withered. The reporter found that the local people to use more rice dumplings is reed leaves, cooked after that appearance is still very green dumplings are mostly using bamboo, bamboo leaves and cook complete with copper sulfate will remain after the bubble bright, the reporter did a hands-on experiments specially.
people suspected of Reporters went public Liu home. Liu told reporters that the package a few days to see someone outside the dumplings, green appearance is very nice, she went to the market, buy some rice dumplings bamboo leaves home, it is difficult to pack the kind of fresh emerald color dripping .
reporters saw Sharon dumplings although the appearance of the package is already showing a dry brown, like the leaves to fall gradually turn yellow, but there was a smell of bamboo leaves, sweet flavor, while stripping out of a Shares rich rice cakes blowing. She often cooked out of this is the normal color, but that looks very nice, very probably put something else! cream, the color does not look like the kind of fresh bamboo leaves green, and those who cook the dumplings are even more yellow skin dark. supermarkets, a staff member said that these dumplings are dumplings with high quality from the South cooked frozen dumplings made of leaves, so does not look very bright, with origin regions are approaching, so do not need to go very fresh stain, while those on the market are used to make bamboo leaves, bamboo leaves long-distance transport from the field over, because bamboo leaves will yellow over time picking Therefore burberry bags outlet, it will sell a lot less than fresh Ashiba some bamboo farmers in picking bamboo, it will add some things inside, so that is not only transported over the fresh green bamboo leaves, boiled bamboo leaves is green, but what specifically concocted, hawkers, but said he did not know.
link consumption of copper sulfate can cause kidney failure
bamboo leaf rice dumplings in the annual harvest season July to October, usually after the Dragon Boat Festival in the year, which means that, when used in a lot of rice dumplings are dumplings on an annual leaves, but due to geographical, storage, transport and other sectors affected, it is difficult to guarantee the long-term change the color of leaf dumplings, while the natural state is actually bamboo leaves, bamboo leaves in the light, heat under the effect of chlorophyll degradation, the formation of yellow or olive-brown, which is what we call the common yellow leaves or dried leaves. dumpling leaves turning green processing, is to copper sulfate, copper chloride and other industrial raw materials in the generation of free copper ions and chlorophyll formation of metal complexes of chlorophyll green processing.
interview, some bamboo leaves hawkers told reporters that if people want to buy bamboo bamboo leaves, the best choice for those who does not look very bright, and the smell is fresh.
6 4, the reporter linked to sea-Ci hospital emergency room, a medical staff told reporters that the copper sulfate used for agricultural and industrial anti-corrosion anti-virus, clinical intoxication are generally caused due swallowed. copper sulfate on the gastrointestinal tract have a strong stimulating effect, if the dumplings soaked with copper sulfate leaf rice dumplings, it is easy to penetrate the material attached to the dumplings above, and then enter the body through food. and endanger the lives of patients ugg mini! found that the most important of which is expected to blindly agents, agricultural pesticides, water, fungicides, etc. Reporters spend 25 yuan bought a bottle of 500 grams of copper sulfate, ready to use experiments to Secret bright bamboo leaves.
correspondent home, it will two bags were vacuum-packed bamboo leaves open, in addition to bright green color, these bamboo still has a special flavor of rice dumplings, the reporter with a napkin to wipe of the two bags of bamboo leaves, respectively, did not leave a dyed paper color traces.
reporter will then separate the two bags of bamboo leaves, which put a bag of clean tap water, while another bag into the water in addition to, the reporter is still the water into the Gail bottle of copper sulfate, the results of the whole basin of water into the blue.
soaked in a full 30 minutes, the reporter will wash off with water bamboo leaves and rice dumplings soaked with copper sulfate leaves were placed in the pot, with a high heat for about half an hour, and found that burberry kids outlet, after the different treatment of these two bamboo leaves, there have been significant changes: only tap water has been cleaned off the original bamboo leaves green color, become brown; another with copper sulfate soaked bamboo leaves after cooking, the appearance is still showing in dark green.
Experiment II
staining package of dumplings with bamboo leaves bitter taste
after copper sulfate solution, after treatment of bamboo leaves in cooked color is still bright, it really made correspondent bit surprised, but it also proves the feeding can indeed make the bamboo leaves in the After the still bright as ever cooked.
then the reporter made a second experiment, the bamboo leaves with clean water directly rice dumplings with bamboo leaves soaked with copper sulfate for cooking rice dumplings for comparison. < / p>
correspondent first direct cleaning of bamboo leaves with a bag of rice dumplings, boiled for an hour in, the reporter will be taken out dumplings, soup dumplings and then cooked into a white bowl of them, aside; then again two reporters with copper sulfate soaked bamboo leaves were cleaned, then pack into a rice dumplings into the pot boiling, cook for an hour in, the reporter again removed and the remaining soup dumplings juice into the white bowl.
by comparing two different treatment of bamboo leaves after cooking and the soup dumplings look after, the reporter found that: only washing with water cook the dumplings in bamboo leaves, the bamboo leaves have become brown, bowl of soup is thick yellow; but with copper sulfate soaked bamboo leaves into the bag after the dumplings cooked, still bright green bamboo leaves, and a bowl of soup also a trace of yellow green.
addition to soup dumplings color and color appearance, the reporter also found that copper sulfate soaked with made dumplings cooked in bamboo leaves, the kind of common dumplings taste has become very light fragrance is very light, but with a hint of slightly bitter taste. edition text / Correspondent Bao Fu Yulin just
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