Talking about yeast foods
your What was the first reaction?
Bread? Steamed bun?
Many people Eat yeast food
Everyday must-have cakes and desserts
There is a saying on the web
Eating yeast-containing foods is easy to get stomach problems
Is it true or false?
Let’s learn about the real situation together…
yeast, what is it?
Yeast is neither puffed It is not an industrial raw material such as softening agent, but it is actually a single-cell structurefungi, which is a natural starter, Can survive under anaerobic conditions.
4 functions of yeast in dough:
● Yeast works in the dough to promote Formation of protein chains.
● During fermentation, yeast absorbs sugar in the dough, resulting in Carbon dioxide and alcohol, exert their “fermentation” effect, make the dough soft and porous and bulky.
● In addition to carbon dioxide production, yeast fermentation increases gluten expansion, improve the air-entraining ability of the dough.
● Yeast produces many “volatile organic substances” during fermentation that help to form bread and other food-specific baked aromas.
Frequently eat foods containing yeasteasy to get stomach problems ?
Someone said “steamed bread , Don’t eat bread when it is just steamed (baked), otherwise you will get stomach problems.” Looking at the reasons, the main target is the carbon dioxide produced after yeast fermentation.
As a biological leavening agent, yeast does produce carbon dioxide during the fermentation process of steamed bread and bread. , but the fermentation and gas production capacity of yeast will be affected by many factors such as temperature, dough composition, pH value.
For example:The yeast cannot survive when the temperature exceeds 60°C, Don’t expect yeast to ferment and produce gas. In the process of steaming steamed buns and baking bread, the heating temperature is even higher.
Therefore, there is no need to worry that the steamed (baked) steamed buns (bread) are still being produced in large quantities carbon dioxide. And even if it contains carbon dioxide, it’s no more than your favorite carbonated drink.
It can be seen that eating yeast-containing foods often will not hurt the stomach, but can improve the digestion and absorption rate of nutrients in the diet.
Eating yeast-fermented steamed bread frequently will cause gouthigh uric acid< /strong>?
Long-term human intake A high purine diet is a high risk factor for hyperuricemia and gout, and general diets are divided into high purine, Medium purineand low purine.
In terms of purine content alone, the purine content of 100g of yeast powder is 559mg, and yeast powder is indeed a high-purine food .
But from the intake analysis, the recommended amount of yeast powder is 0.5%, that is, 5g per packet , about 1 kilogram of flour can be raised, calculated according to the amount of staple food of 100g per person per meal, the purine content is basically negligible, and there is no need to worry that eating yeast-fermented steamed bread will cause high uric acid and gout.
< span>Yeastandbaking sodawhich Facing better?
No .1
yeast< /strong>
Yeast isnatural starter , during the fermentation processnot easy to be sour, and the steamed pasta has its own fragrance; and the yeast is in the fermentation process span>Can produce B vitamins(such as niacin, folic acid, etc.) and protein strong>; In addition, yeast itself is also a probiotic, it increases the gelatinization degree of starch, making the steamed bread more easily absorbed by the human body, and reduces the burden on the stomach .
Yeast is easily controlled by “temperature” during fermentation – yeastThe best fermentation room temperature is around 30 degrees, and the fermentation speed will be slower if the temperature is not suitable.
No .2
baking soda
The scientific name for baking soda issodium bicarbonate , is a alkaline leavening agent. Carbon dioxide gas will be released in contact with water and high temperature environment, which is also an important reason why it can be used to make noodles.
but it reacts with less carbon dioxide, The effect is limited, so the steamed pasta is often not soft enough; and if you accidentally use too much, it will make the ingredients have a bitter taste, and it will also make the noodles look more yellow.
Compared with baking soda, baking soda can be added appropriately Fried food, such as fried small crispy pork, fried dough sticks, etc., can make the fried food more crispy; When marinating beef Add a little more to tenderize the meat when frying.
What should I pay attention to when using yeast in food?
Select the right yeast
First
The yeast should be confirmed to be within the shelf life.
Next
is also a point that is usually overlooked: Note that yeast are high-sugar and low-sugar types, ” “High-sugar” yeasts are generally used in doughs with more than 7% added sugar, such as sweet breads.
For home-made steamed buns or whole-wheat bread, choose yeast powder with the word “low sugar” .
Last p>
See if the packaging is firm, because active dry yeast will be vacuum-packed, The bag becomes soft, indicating that air may have entered and the yeast will be less viable.
< span>Yeast is best “activated”
before use Add a small amount of warm water to the desired amount of yeastWhisk lightly to dissolve, then add a teaspoon White sugar, let stand for 3 to 5 minutes to “activate” the yeast, and then put it into the flour to add enough water to knead the dough to ensure that the reconciled dough is fully fermented in the shortest time. Save time, and at the same time make steamed pastries softer and sweeter.
Optimum temperature
The temperature of 30℃~35℃ is the most suitable for raising dough, whether fermentation It can be fully seen that the dough is fluffy and expanded and the honeycomb appears in the dough.
< span>Refer to the recommended amount of yeast to use
In general, the amount of yeast added Follow the product instructions to add.
can also be adjusted according to fermentation time and season. For example, when the temperature in winter and spring is low, the fermentation may be slightly more.
Source: Run Run Shaw Hospital, China Food and Drug Administration
Editor: Zhuhai Market Supervision Team
Declaration: Copyright Owned by the original author, if there is any infringement, please contact the background, we will deal with it within 24 hours