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What trace elements are there in apples to enhance memory?
Zinc is a trace element in apples, which can enhance memory.

Apple (Apple? The mill. ), a deciduous arbor plant of Rosaceae, with tall stems and short and thick cylindrical branchlets; Leaf blade oval, smooth surface, serrated edge and stout petiole; The flowers are small and umbrella-shaped, pale pink and fluffy on the surface; The fruit is large, oblate, short and thick. Flowering in May; Result period: July ~ 65438+ 10.

The name of the apple was first seen in the book Xuepu Yu Shu written by Wang Shimao in the Ming Dynasty, "Apple in the North", that is, the change of bonus. Apples are native to Central Europe, northern Iran and southern Caucasus of Russia. China is mainly distributed in Xinjiang and Ningxia, and generally grows in terraces on hillsides, plains, mines and hills.

Apple likes light and is cold-resistant. It requires a cool and dry climate and is not barren. It is suitable for neutral or slightly acidic sandy loam with loose soil, deep fertility and good drainage. Propagation methods include tuber method, grafting method, sowing method and cutting method. Natural reproduction of offspring depends on seed propagation, among which grafting reproduction is the fastest.

The word "apple" in modern Chinese comes from Sanskrit and is a fruit mentioned in ancient Indian Buddhist scriptures. It was first called "frequency girl", and later it was borrowed by Chinese and written as "Pingbo" and "Pingpo". There is an entry of "Apple" in the agricultural book "Qunfangpu Guo Pu" in the Wanli period of the Ming Dynasty, saying: "Apple, out of the northern land, Zhao Yan is especially good. Connect with the forest.

This tree is straight, Julia, as big as a forest and as smooth as a pear. Raw green, cooked half red and half white, or all red, bright and lovely to play with, how many levels of fragrance. When tasting Gan Song, people who are not ripe taste like cotton wool, and those who are overcooked are rotten, but those who are 89% ripe are the best. Many experts in the history of agriculture and fruit trees in China believe that this is the earliest use of the word "apple" in Chinese.

"southern Yunnan materia medica" records that "apples can nourish the lungs, relieve summer heat, stimulate appetite and sober up, and can cure bone and muscle pain." Apple is a kind of nutritious fruit, and is known as the king of fruit. According to the traditional western diet concept, an apple a day keeps the doctor away. Many Americans also regard apples as a necessity to lose weight. They go on a diet one day a week, and only eat apples on this day, which is called Apple Day.