Break The Taboos Of Mutual Restraint Between Foods

Fan+Zhihong

As long as you read newspaer， magazine or surf online， there are lots of content about “compatibility and incompatibility of food”， which informs the readers tirelessly that food A and B is a perfect match， while food C and D is restricted each other------

But if we are careful enough， we will find that many compatible and restricted matches are misunderstandings of research information and science. Some of them are taking a part for the whole， some are exaggerating its impact， some diminish its scope， thus lead to people focus on detailed information of particular cases ， which bring people the feeling of treading on eggs when cooking.

Truth： starch can only be soluable in small intestine. Just with the existence of protein in the food ， it can can increase the time that starch passes into small intestine， avoiding rising in blood glucose. Most people know that they will feel hungry soon after they eat food rich in starch and low protein. Suppose it is unhealthy to eat starch and protein together， then it is not allowed to eat rice， steamed bun and noodles together with fish，meat and bean products， it might go as far as not to eat food like steamed stuffed bun， dumplings and wonton which contain both starch and meat， which are to be poisonous in the traditional thinking.

Truth： trypsin inhibitor contained in soya-bean milk is a protein serving as reducing acitivity of the inhibitor， which prevents protein from being taken by human body. However， such protein is not strong in its heat resistance， over 85% of which will be ruined after having been heated for 9 minutes with 100℃. So， it is ok to eat together with eggs after soya-bean milk has been boiling for 10 minutes. Eggs white of raw egg contains a protein which can prevent the intaking of nutrition， such as ovomucoid and biotin binding protein which will lost their activity as long as it is heated to 70℃， they are less resistance to heat.

There is one thing needs to be cautious， if the soya-bean milk is not well-cooked， then blood lectins of the milk is poisonous. It is with the green bean. So， it will be ok when such milk is boiled and then eat with egg.

Reason： Some people believe that drinking tea shortly after having high protein diet such as meat， seafood and others will be helpful to digestion. But they hardly realize that the combination of protein and tannic acid in the tea will generate tannic acid protein with constringent which can slow peristalsis and extend faeces stay in intestines. It would be easy to cause constipation on the one hand， it will increase the possibility of intaking of poisonous and cancerogenic substances by human body on the other hand.

Truth： tea polyphenol in the tea can reduce the activity of digestive enzyme， and delay the intaking speed of protein， fat and carbohydrate， decrease the absorptitity of sebaceous， which is healthy to guard against chronic disease. One more thing need to be warned it is better to drink weak tea during dinner， though Fe of meat is heme iron whose rate of absorbtion and utilization will not be affected by tannin compounds in the tea， however， non-hemeiron contained in food might reduce its absorptivity by strong tea.

Reason： crab is highly nutrients like protein and calcium， if enjoying it with fruits containing tannin will not only reduce nutrition of protein but easy to lead to a new stodgy substance combined by tannin and calcium in the crab， causing such symptoms like stomachache， vomiting， nausea and others. Fruits rich in tannic aicd include persimmon， grape， pomegranate， Chinese olive and others， such fruits should not be taken with seafood together， it will be ok to have them after two hours when you eat seafood.

Truth： the statement sound reasonable in a certain extent， but it is not precise enough. Though protein， calcium and tannin can interact with each other ， but it is not the most dangerous reason. The reason is this： after you have eggs rich in protein， or tofu highly in calcium， then you enjoy the fruits and you will not feel the forceful response just like the reaction from eating seafood.

Truth： crab contains abundant protein and calcium and other nutrition. If eating crab with fruits containing tannin will not only reduce the nutrition of protein， but easy to form a new strong substance consiting of calcium from crab and tannin， causing the occurrence of such symptoms like stomachache. Recently， American food expert has warned that it is dangerous to drink liquor with carrot， pointing out that carrot rich in beta carotene is taken into human body with liquor， then they will produce toxin in the liver， leading to hepatopathy， one more thing needs to be paid special attention， it is better not to drink liquor after drinking carrot juice immediately.

Reason： Recently， American food expert has warned that it is dangerous to drink liquor with carrot， pointing out that carrot rich in beta carotene is taken into human body with liquor， then they will produce toxin in the liver， leading to hepatopathy， one more thing needs to be paid special attention， it is better not to drink liquor after drinking carrot juice immediately.

Truth： it is quite normal to see milk with sediment when its protein interacts with vinegar. Even if you do not eat fruits， protein of milk still will generate sediment when encountering with gastric acid. Gastric acid is more sour than orange juice， if the interaction of milk and acidity is bound not to be intaken， then how much is the possibility for milk to be intaken in our body.

Reason： having oranges shortly after drinking milk will not only affects digestivie absorption， but leads to such symptoms as abdominal distension， stomachache， diarrhea and others because protein in milk will first meets vitamin C and tartaric acid in orange and then freezing into lump.

Reason： scientists have found that brassicaceous vegetable like turnip is taken in human body， it will generate thiocyanic acid， a substance which can restrain thyroid. The generating amount of such matter is in direct proportion to its acceptable daily intake. As the same time， if eating much fruit with high plant pigments like orange， pear， apple， grape and others， then flavonoid substances in these fruits will be decomposed by bacteria in the intestinal tract and turn into Methyp-bydroxybenzoate and ferulic acid， which can strengthen its effect of for thiocyanic acid to restrict thyroid， leading to its enlargement.

Truth： the isothiocyanate of turnip belongs to glucosinolate substance， and it does have the effect of reducing the rate of absorbtion and utilization of iodine. Besides turnip， many watercress like broccoli， leaf mustard， Chinese mustard and other also contain such substance. However， the thyromegaly is only caused by iodine deficiency. At present， iodate is taken by all Chinese in their daily life， so it is rare for people to suffer from iodine deficiency， what is more， animal foodstuff can also provide adequate iodine supply which can meet peoples daily demand. Even eating turnip and fruits every day will not lead to thyroid enlargement. In addition， bacteria of flavoid which acts as decomposition can only be stored in large intestine， while the stuff in it is seldom to be absorbed by human body， so it is not necessary to worry about this problem.