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Anonymous users2024-02-07The content of tea polyphenols in the six major teas: the content of tea polyphenols in green tea is about 330mg g, the content of tea polyphenols in black tea is about 160mg g, the content of tea polyphenols in green tea is about 230mg g, the content of tea polyphenols in black tea is about 100mg g, and the content of tea polyphenols in white tea is about 290mg gThe tea polyphenol content of yellow tea is about 250mg g.
The content of tea polyphenols in the six major teas is sorted:
Green tea, yellow tea, dark tea, white tea, oolong tea, black tea. Among them, the first three belong to the green tea, and the last three belong to the withered tea. It can be seen that the content of tea polyphenols in tea with greening process is significantly higher than that of tea with withering process.
Among them, the content of tea polyphenols in green tea Pu'er tea (raw tea) and Xinyang Maojian was higher, respectively, and the lowest content of polyphenols in black tea aged orange Pu'er tea was only.
Some of the influencing factors of tea polyphenol content:
1. From the perspective of the whole tea tree, the highest content of tea polyphenols is new shoots, followed by old leaves, stems and roots, and the content in roots is low.
2. In the new shoots, the tea polyphenol content of the bud shoots was lower than that of the first leaf, and from the first leaf, its content decreased with the increase of leaf position.
3. Generally speaking, the content of tea polyphenols will increase when the temperature is high, the light is strong or the light time is long, and vice versa. Therefore, the tea polyphenol content of summer tea is the highest, followed by autumn tea, and spring tea is the lowest.
4. Generally, when the tea tree exceeds a certain altitude (about 500 meters), the content of tea polyphenols decreases with the increase of altitude.
5. In general, the tea polyphenols of large-leaved species are higher than those of small- and medium-leaved tea.
6. There are differences in the chemical composition of tea leaves of different colors, the content of tea polyphenols in purple buds and leaves is higher, followed by yellow-green buds and leaves, and the content of dark green buds and leaves is lower.
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Anonymous users2024-02-06Theophylline can reduce smooth muscle tone and dilate the respiratory tract;It can promote the release of endogenous adrenaline and norepinephrine, and relax the smooth muscles of the airwaysInhibits the release of calcium ions from the smooth muscle endoplasmic reticulum, reduces the concentration of calcium ions in cells and produces respiratory tract dilation.
Theophylline has a strong relaxation effect on smooth muscle, but not as much as receptor agonists. On October 27, 2017, the list of carcinogens published by the World Health Organization's International Agency for Research on Cancer (IARC) was preliminarily sorted out for reference, and theophylline was in the list of three types of carcinogens.
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Anonymous users2024-02-05Theophylline is an alkaloid extracted from tea leaves, and its properties are similar to that of caffeine. Although theophylline is named after "tea", the content of theophylline and theobromine in tea is less than one-thousandth of that of caffeine compared to caffeine. The caffeine content in coffee beans is 1%-2%, and the caffeine content in tea is 2%-4%, which is more than double that of coffee beans, so it is also called "theophyllin".
Theophylline refers to an alkaloid extracted from tea leaves, and its properties are similar to that of caffeine. Although theophylline is named after "tea", the content of theophylline and theobromine in tea is less than one-thousandth of that of caffeine compared with Hongsui caffeine. The caffeine content in coffee beans is 1%-2%, and the caffeine content in tea is 2%-4%, which is more than double that of coffee beans, so it is also called "theophyllin".
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Anonymous users2024-02-04The explanation of theophylline is: theophylline can reduce smooth muscle tone and expand the respiratory tract; It can promote the release of endogenous adrenaline and norepinephrine, and relax the smooth muscles of the airwaysInhibits the release of calcium ions from the smooth muscle endoplasmic reticulum, reduces the concentration of calcium ions in cells and produces respiratory tract dilation.
The explanation of theophylline is: theophylline can reduce smooth muscle tone and expand the respiratory tract; It can promote the release of endogenous adrenaline and norepinephrine, and relax the smooth muscles of the airwaysInhibits the release of calcium ions from the smooth muscle endoplasmic reticulum, reduces the concentration of calcium ions in cells and produces respiratory tract dilation. The structure is:
Tea (upper and lower structure) alkali (left and right structure). Pinyin is: chájiǎn.
What is the specific explanation of theophylline, we will introduce it to you through the following aspects:
Idioms about theophylline.
Residual tea leftovers, wave wine, idle tea, coarse tea, light rice, tea rice, unintentional tea, surplus rice, full of flowers, sipping tea, light tea, light rice, such as flowers, such as tea, people go to tea, cold tea, and serve tea to send guests.
Words about theophylline.
People go to tea, three teas, six rice, waves, wine, leisure, three teas, six ceremonies, tea send-offs, clear tea, light rice, residual tea, leftover sails, old rice, tea and rice, full of tea, no heart, tea after drinking.
About theophylline.
1. ObjectiveTo evaluate the clinical application of anticholinergic drugs, theophylline preparations and expectorants.
2. So they hurriedly called the doctors of the nephrology department to find a way, and after consultation, they decided to do peritoneal dialysis and auxiliary cardiopulmonary bypass, hoping to filter out aminophylline and other toxins through peritoneal dialysis.
3. Coramine, lobeline, huisulin, meixiemian, artifolidine, aminophylline, etc.
4. MethodsTwo groups were randomly divided into doxofylline ** group and general**, and docofylline and aminophylline were used intravenously to observe the efficacy.
5. We believe that it is necessary to specify the dissolution degree of theophylline in aminophylline tablets to control its quality.
Click here to see more information about theophylline.
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Anonymous users2024-02-03In addition to the anti-asthma effect, theophylline can also inhibit the release of histamine from mast cells and basophils, which has a certain anti-inflammatory effect. It also has a dilated coronary artery, peripheral blood vessels, bile ducts, increased myocardial contractility and a weak diuretic effect.
The pharmacological effect of aminophylline against asthma is mainly derived from theophylline, but because theophylline is not easily soluble in water, there is no injection form. Later, researchers found that ethylenediamine can enhance the water solubility of theophylline, so theophylline and ethylenediamine are combined with Lacchaifeng into a double salt, that is, aminophylline, which makes the clinical injection of asthma. Therefore, theophylline in the clinical sense is actually aminophylline.
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Anonymous users2024-02-02Summary. Pro, caffeine is a compound with a similar structure to theophylline, they have the same molecular formula but they have a slightly different structure. Caffeine can be obtained by methylation of theophylline, and the specific reaction conditions and methods can be optimized according to the specific conditions of the laboratory.
Generally speaking, theophylline can react with methyl sulfuric acid or methyl iodine to produce methylation products, which can then be properly treated and purified to obtain caffeine. It is important to note that this chemical reaction needs to be carried out under the right conditions and needs to be operated safely.
Hello, theophylline sodium salt is not theophylline, it is a compound containing theophylline. Theophylline is an alkaloid naturally found in tea, coffee, cocoa and other plants, which has the effects of stimulating nerves, enhancing myocardial contractility, and dilating blood vessels. Theophylline sodium salt is not a salt formed by combining theophylline with sodium ions, and is often used in the pharmaceutical and food industries.
Numeric states. What is the CAS number of theophylline sodium salt.
The CAS number of theophylline sodium salt is: 1942-28-9.
What is the CAS number of theophylline.
The CAS number of theophylline is 58-08-2.
Isn't cas58-55-9 theophylline?
The compound with CAS number 58-55-9 is theanine, not theophylline.
Methylated theophylline, whether to use theophylline sodium salt or 58-55-9
Methylated theophylline is obtained by methylation reaction of theophylline, rather than methyl reaction of theophylline sodium salt or 58-55-9. Methylated theophylline is a chemical substance that is similar in structure to theophylline but contains a methyl group in the molecule. Its CAS number is 3430-13-5.
Forehand. Caffeine can be obtained by methylation with what kind of theophylline.
Pro, caffeine is a chemical cave complex with a similar structure to theophylline, they have the same molecular formula, but their structure is slightly different. Caffeine can be obtained by methylation of theophylline, and the specific reaction conditions and methods can be optimized according to the specific conditions of the laboratory. Generally speaking, theophylline can react with methyl sulfuric acid or methyl iodine to produce methylation products, and then after proper treatment and purification, it can be obtained to obtain canachioline.
It is important to note that this chemical reaction needs to be carried out under the right conditions and needs to be operated safely.
How much theophylline methylation is used with the CAS number?
Theophylline with CAS number 58-08-2 is the main component of the common tea Zheng missing leaves, and it is also one of the commonly used raw materials for methylated theophylline. Methylated theophylline can also be synthesized from other ** theophylline, such as theophylline with CAS number 6055-19-2.
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