How to discern the dyeing food in life Black sesame will take care if black sesame fades

How to discern the dyeing food in life Black sesame will take care if black sesame fades

Dye sesame ( Right) With the sesame that is not dyed ' Left) After soaked in water. (the materials and pictures)
While the food look more and more esthetic, food is natural and the security eaten is paid close attention to by more and more people. This newspaper teaches you the dyeing food in several method difference daily life.
How to distinguish whether oranges are dyed
The orange is a fruit well received by people, but the orange color on the market is more and more bright now, more and more goodlooking, how to distinguish whether the appearance of the orange is natural or is dyed, consumers must see carefully.
The orange dyed, the surface seems very red and gaudy, observe carefully, can discover the hole skin of epidermis and have red spots, some orange surfaces even have red residues.
Polish the surface of orange with the wet paper, if the wet paper turns red, prove the orange may be dyed; The orange not dyed, the wet paper can only see thin yellow after polishing. Dye the serious orange, the base of a fruit of orange will become red too; The orange not dyed, the base of a fruit of orange is green and alternate in vain. The orange dyed, the surface fumbles and sticks; The orange not dyed, feel stand up more naturally.
Black sesame will take care if black sesame fades
Dark sesame have two reasons to dye generally, first, " dressed up " And then sesame,look black and it is bright let's sell for intimate friend,can attract by consumer; Second, pale sesame of time deceive people among them slightly original the intersection of price and slightly low, quality, raise prices in a disguised form.
Generally speaking, really natural black sesame is dark gray, can not be shinily black, the fresh water will not fade either while soaking, will not filter out " ink " . However, after the black sesame of Chen Nian has been soaked in water for some time, the color of water will become purple or partial and black, this is natural pigment, but will not wash water appearing like Chinese ink, will not wash the situation that still fade seriously many times either.
In addition, the plumule of the black sesame a little is the white of the pinpoint size (or yellow) ,This is the key to distinguishing. If is a black sesame dyed, there is no this absolutely; Can nip and open a black sesame with the nail, really black sesame, the section is white. Really black sesame will neither will fade dye hands black by holding in hand, nor, can not turn into a white sesame after soaking either. Really black sesame soaks into water, will never appear black, it is dark brown at most.
Dyeing black rice don't be eaten
At present, it has two kinds of situations, longer second-class quality or inferior black rice that one is the length of time that common black rice adulterates on the market, adulterate and sell after dyeing; Another kind adopts the ordinary rice to fill black rice to sell after dyeing. Black rice will fade too after washing, has not only dyed black rice terribly in nature. Consumers can distinguish the sense organ from several following respects while buying black rice.
See: See color and luster and appearance of the black rice. General black rice is glossy, the grain of rice is uniform in size, seldom have garrulous rice, explode the waist (there is crackle on the grain of rice) ,Without worms, do not include the impurity. The color and luster of quality once, inferior black rice is dim, the grain of rice is big or small and non- even, the plumpness is poor, there is much garrulous rice, there are worms, lump etc.. For dyeing black rice, because the black of the black rice concentrates on the cortex, the endosperm is still white, so, consumers can wipe all the cortex outside of grain of rice off, observe whether the grain of rice is white, if not is white, extremely probably dye black rice artificially.
Two is smelt: Hear the smell of the black rice. Fetch the black rice of small quantity in the hand, to a hot gas of Kazakhstan of black rice, then take a sniff at the smell immediately. High-quality black rice has normal fragrant flavor, there are no other peculiar smell. The one a little with peculiar smell or there are abnormal smell such as the smell, acid stink of going mouldy is quality once, inferior black rice.
Three is tasted: Taste the taste of the black rice. Desirable the intersection of small quantity and dark rice put, enter in the mouth chewing carefully, rub, have a trial test break to pieces. High-quality black rice flavor is good, a little sweet, there is not any peculiar smell. There is no taste, a little with peculiar smell, the tart flavor, acerbity and other bad flavour one is quality once, inferior black rice.
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