Why aren t oranges sweet? What is the stalk of oranges that are so sweet

Because the cells of the orange undergo anaerobic respiration and partial nutrient respiration!

During this period, glucose in plants is the most important energy substance, in order to maintain the normal metabolism of fresh cells, through the action of some enzymes to decompose glucose and fructose, produce lactic acid, alcohol, water, carbon dioxide and other substances;

Aerobic respiration can get a lot of energy, while anaerobic respiration is not complete, for example, if the apple is left for a long time, it will smell of wine, because alcohol is produced!

Alcohol is very harmful to cells!

In this way, some oranges still taste bitter, astringent, and not sweet, and this is the reason!

The sweetness of oranges is mainly due to the action of sugar, more precisely the effect of polysaccharides, and the polysaccharides in oranges are mainly fructose. The process of drying oranges is a process of spoilage, which breaks down polysaccharides into simple sugars, which are then utilized or converted into other substances, and the decomposers play a role in this. In general, monosaccharides are weaker than polysaccharides, for example, glucose (monosaccharides) is not as sweet as sucrose.

For these reasons, oranges are not sweet when they dry out.

Since the cells of the orange are still alive after being picked, the living cells have to respire to consume glucose, and the reduction of carbohydrates will inevitably lead to a decrease in its sweetness!

It's not just the process of spoilage, but also aerobic respiration, which requires energy, and the direct energy on sugars, so the cells carry out aerobic respiration is the process of consuming sugars, and polysaccharides are converted into monosaccharides, which are broken down into water and carbon dioxide and energy, so they are not sweet.

It's respiration. At night, the indoor temperature is high (even on the balcony), and the melons and fruits have a strong respiration effect, which breaks down some of the sugar. The temperature in Turpan, Xinjiang is low at night, and there is no respiration effect, so it is sweet.

Because oranges dry out like milk that has been left for a long time, it has gone bad. So not only will it not be sweet, but it will also have a weird taste.

Drying out is not necessarily evaporation, it is possible that water is involved in the reaction.

Could it be the hydrolysis of polysaccharides? ）

However, it seems that not all oranges are not sweet when they dry out.

Don't think that the orange is dead, it must be respirated to break down organic matter (including sugars) to keep it alive until it decays.

South orange and north orange. It is mainly a matter of soil and water.

Aerobic respiration + anaerobic respiration + respiration of microorganisms in plants = consumption of organic matter.

Because the sugar in the orange is expired.

The sugar breaks down. I've forgotten what I've broken down into and I'll tell you tomorrow.

The orange respiration is consumed.

It is oxidized, and the resulting vitamin C is acidic.

Tangerine respiration breaks down sugars.

The reason for this is complicated, and it is estimated that someone from the Institute of Agricultural Sciences will investigate to understand what the specifics are.

It is broken down by anaerobic respiration.

It may have something to do with the variety.

Sugar will also evaporate.

It's okay to eat any rotten fruit, not afraid of a bad stomach.

It may be that the sugar has been broken down, fructose and glucose are both simple sugars, so don't talk nonsense if you don't know. They are all people who study natural sciences, and they must be rigorous in studying natural sciences.

Whether the fruit of citrus is sour or sweet, excluding the variety factor, there are only two reasons. First, the adverse effects of the external environment, such as light, moisture, temperature, topography and other ecological conditions will directly affect the sweetness and acidity of citrus fruits, if the light is insufficient, photosynthesis will be blocked, affecting the accumulation of sugar, reducing sugar content, increasing acid content, and decreasing quality; The second is the influence of cultivation management level, such as the lack of organic matter in the soil, the unreasonable ratio of nitrogen, phosphorus and potassium, and the early harvesting, etc., which will cause the sugar and acid content of citrus fruits.

If we choose a variety that is not more acidic, then in the other two areas, the highest probability of causing the citrus to be too acidic is generally our management level. Because the external environment has been fully considered in the construction of the park, there are generally few problems such as less light, less water, and unsuitable temperature. From the management point of view, the lack of understanding of the soil situation leads to citrus deficiency, or unscientific fertilization, unreasonable harvesting, etc., these situations will still be frequent.

Therefore, if the citrus is too acidic, we need to consider our cultivation management issues first, especially in terms of fertilization.

After this sentence, which was originally very warm, became popular on Chinese social **, it was extended by netizens with the stalk "buy oranges" to allude to the meaning of "I am your father", and was used to take advantage of others.

I'm going to buy a few oranges", an Internet buzzword, this sentence comes from Zhu Ziqing's short essay "Back", in which Zhu Ziqing's father says to Zhu Ziqing, "I'll buy a few oranges." You're right here, don't move.

The old man touched the bun with his hand several times, but never picked it up. As soon as the pony entered the door, he picked up one: Pony, be good, give it to you.

The pony was twelve or thirteen years old, with a very thin face, but he was dressed very roundly, his nose was red from the cold, he had two white snots, and a pair of broken ears on his ears.

Standing beside the old man, he took the bun with his right hand, and automatically picked up one with his left hand, and took a bite of the other. Ay! Slowly!

The old man put one hand on his grandson's head, picked up a bun with the other, and slowly sent it to his mouth. "Grandpa is enough to eat two, it's all yours! After eating, let's collect the car and go home, don't pull it.

If it's not so cold tomorrow, let's get out of the car early.

That's right, pony, pony nodded at the bun and sniffed: Grandpa eat three, the rest is mine. I went back and took my grandfather home, you still have two more to eat, and you can drink some orange peel in water, which was bought for my great-grandson.

Lao She's "Four Generations in the Same Hall".

Good light, appropriate low temperature and relatively arid maintenance environment to do these three points, not only conducive to its coloring, but also to make the fruit sweeter, good light this is the same no matter in which season, the maintenance environment of fruits and vegetables must be placed in a sunny place, preferably outdoors or in the yard, this kind of open-air sun, rapid lack of shelter;

When the low temperature means that the temperature has dropped in autumn, especially at night, the temperature is relatively low, but we don't need to keep it warm, or transfer the position to maintain, citrus are able to withstand a certain low temperature, generally minus 5 degrees is no problem at all, the appropriate low temperature can make the fruit sweeter;

The relatively dry and sensitive maintenance environment refers to the fact that if the leaves of the plant are wilted and drooped when the temperature is high at noon, and the temperature decreases in the afternoon, it will recover on its own, and there is no need to water at this time, if it is past noon, the leaves are still wilted or curled in the afternoon, that is the need for proper watering, to avoid excessive drought, and the appropriate drought maintenance environment can also make the fruit sweeter;

The last point to mention is the nutrients, fruit trees and potted plants.

It is very important to want to bear more fruit is that the pot is large enough, and the large pot means that it has enough space to grow, and the nutrients in the potting soil will be more sufficient, like my mandarin orange.

It is planted in an oversized flower pot, which is also called a dragon pot.

It is much larger than a 7-gallon pot, so that the potting soil nutrients can be sufficient for the root system to grow, usually fertilizing with organic fertilizer, about a month on the surface of the potting soil sprinkled with a circle of acres of arguing;

Tangerine sweet and sour in variety. Some varieties are sweet, some varieties are sour, depending on which one you buy.