Reader Joyce used this website to contact me on July 19, 2024 to inquire: Hello Professor
! Yesterday I saw a report as follows: “Banana contains polyphenol oxidases that can destroy polyphenols, and its polyphenol oxidase content is 100 to 500 times that of most fruits. Therefore, if bananas are added to fruit juice, the polyphenols of fruits and vegetables will be destroyed by almost as much as ……………"Even if you eat them separately, if you meet in the stomach, the banana will still destroy the polyphenols of other fruits and vegetables. Therefore, you cannot eat bananas for 2 or 3 hours before eating other foods." ”Exclusive/It's all wrong! "1 fruit" cannot be beaten into fruit juice, which will greatly reduce the efficacy of preventing cancer | Sanli News Network | LINE TODAY
I saw another article saying “ Banana is a fruit with high PPO, so adding bananas to the fruit shake will significantly reduce the absorption of syrup by …… "
I feel that the report is too correct, and the simple bananas become very complicated. (Does bananas aid digestion after eating?) I would like to teach the professor's analysis. Thank you. The first paragraph of the first article sent by the reader is: Bananas are high-deep and low-calf fruits, which are beneficial to cardiovascular health, are rich in antioxidants, can resist inflammation and enhance immune function. However, doctor Jiang Shoushan reminded that bananas are best eaten alone, because Bananas are rich in polyphenol oxidase, which can destroy polyphenols in other fruits and vegetables, greatly reducing the anti-oxidation and anti-cancer effects of other fruits and vegetables. "Even if eaten separately, if you meet in the stomach, bananas will still destroy polyphenols in other fruits and vegetables. Therefore, you cannot eat bananas in the first 2 or 3 hours of eating other foods." The second article sent by the reader was published by Dr. Li Siqian on his blog on 2024-6-16. The illustrations in this article are copied from his blog post. The first paragraph of the article is: I saw a very interesting video when I was browsing on YouTube. The author of the video believes that we should not add bananas to smoothie because this will greatly reduce the nutritional benefits of smoothie. The reason for my interest is not because of the sugar in bananas, but its impact on nutrient absorption. So, I checked the relevant research and summarized it as follows. The last paragraph of the
article is: If I were my readers, I would have rarely eaten bananas. Whether eaten raw or beaten with fruit shakes, bananas are very high in sugar, which are very unfriendly to blood sugar controllers, and the effect of replenishing ion is not as good as the market says. Although the number of samples in this study is not large, only 8, it provides a new reason for not eating bananas.
The comments of the two doctors Jiang Shoushan and Li Siqian are based on a paper published on 2023-8-24, but over-reading them even distort the conclusion of the paper.
The title of this article is Impact of polyphenol oxidase on the bioavailability of flavan-3-ols in fruit smoothies: a controlled, single blinded, cross-over study.
This study recruited eight healthy men to take one of three different food samples:
1. Banana smoothie: a smoothie made from banana, almond milk and cocoa extract containing epithecin. (Note: Epithecin is a yelium-3-ol)2.Mixed berry smoothie: a smoothie made with the same cocoa extract plus strawberries, blueberries, blackberries, raspberries, almond milk, water, crushed ice and ego.
3.Capsule: A cup of milk and a capsule containing cocoa extract.
Politics draw blood every hour to check the epithecin's 6 hours after taking the food sample. It turned out that people who took banana shake had about 80% less product than those who took mixed berry shakes or capsules.
Since bananas are rich in polyphenol oxidase (PPO, polyphenol oxidase), and berries only contain a small amount of PPO, researchers believe that the shakes made from bananas are not conducive to the bioavailability of yan-3-ol.
From this experiment, we can see that:
1. There is no such thing as "buffering bananas with other fruits" in the experimental samples.2. What the researchers examined was "epithecin in cocoa extract", not "polyphenols in fruits".
3. The researchers did not have the experience of "even if they are eaten separately, bananas will still destroy other fruits and vegetables."
From this we can see that the discussion of Dr. Jiang Shoushan is a plot that distorts the facts.
As for what Dr. Li Siqian said, "Bananas are very high in sugar fruits, … but it provides a new reason for not eating bananas." I would like to see Which Fruits Have the Most Sugar? published by Cliffland Clinic on 2023-1-13 (which fruits contain the most sugar content?).
A banana: 15gA oleyl: 17g
A oleyl: 25g
A oleyl: 46g
Fruit is a healthy way to get sugar. After all, fruit is very good for you. It is rich in vitamins and nutrients, and many fruits are rich in fiber, which helps the digestive system.
Nutritionist Czerwony said: "I don't want anyone to be afraid of sugar in fruits because these are natural sugars. The body is treated differently from sugars in foods like dry foods or cakes. Unless you have diabetes or other health conditions that require monitoring your blood sugar levels, you may not eat enough fruit because you are worried about sugar."
Moderator's note 1: There is another "famous doctor" in Taiwan who even told everyone not to eat fruits. Please see if fruits increase the erectile sterol? .
Moderator adds note 2: Please remember this sentence: "Anyone who demonizes fruit is a demon."
Moderator Add Note 3: Please also remember this sentence: "We eat food, not a single nutrient."
Moderator's note 4: If you really care about a single nutrient, such as polyphenols, drink a cup of tea every day (containing a lot of polyphenols). In this way, you don’t have to worry about the polyphenol oxidase in bananas, nor do you have to ignore the sugar in fruits.
Original text: Bananas are harmful, theresponsibility editor said by the two doctors: Gu Zihuan