Is the nutritional content of hardcore yam the same as that of ordinary yam?

In the folk, yam is a well-known important nourishing product. According to modern scientific analysis, yam contains protein, sugar, vitamins, fat, choline, amylase, lysine and other components, as well as iodine, calcium, iron, phosphorus and other human bodies.

Indispensable inorganic salts and trace elements.

Iron stick yam can have a good nutritional supplement, but also can have a tonic effect and effect.

Compared with ordinary yams, iron stick yam contains saponins, mucin, choline, yams, starch, glycoproteins, free amino acids, polyphenol oxidase, vitamin C, iodine, 16 kinds of amino acids, as well as iron, copper, zinc, manganese, calcium and other trace elements.

According to modern scientific analysis, the biggest feature of iron stick yam is that it contains a large amount of mucin. Mucin is a mixture of polysaccharide proteins, which has a special health care effect on the human body, can prevent fat deposition on the cardiovascular system, maintain the elasticity of blood vessels, and prevent the premature occurrence of atherosclerosis; May reduce subcutaneous fat accumulation; It can prevent the atrophy of connective tissue and prevent the occurrence of collagen diseases such as rheumatoid arthritis and scleroderma. Iron stick yam can be supplemented with a large amount of mucin, which can prevent fat accumulation, and can also protect the cardiovascular system.

What is the difference between iron stick yam and regular yam? After reading it, it's really a long knowledge, and it makes sense that it's expensive!

First, the appearance is different.

1. Iron stick yam is usually 2 cm in diameter, the epidermis is slightly darker, and the rhizome has iron-red filial piety marks. The weight of a single iron stick yam generally does not exceed 250 grams, that is, five taels (but the weight of the sand iron stick yam above 80 cm can be about 500 grams, depending on the planting technology and management).

2. The yam is cylindrical, cautiously curved and slightly flattened, 15 30 cm long and 15 cm in diameter. The surface is yellowish-white or light yellow, with longitudinal grooves, longitudinal wrinkles and fibrous root marks, and occasionally light brown skin remains. Weight, solid quality, not easy to break, white section, powdery.

It is odorless, light in taste, slightly sour, and sticky in chewing. Guang yam is cylindrical, the ends are flush, 9 18 cm long, and the diameter is 18 cm. The surface is smooth, white or yellowish-white.

2. The difference between containing and being included.

Iron stick yam is one of the many kinds of yam, and there are traces like rust on the iron stick yam, so it is named iron stick yam.

Second, the origin is different.

1. Iron stick yam, according to the different geographical locations, the iron stick yam is divided into two kinds of iron stick yam, sandy soil and soil near the Yellow River. Today, Henan Jiaozuo Wen County, Qinyang (ancient Huaiqing Mansion) and other places, among which Wen County (geographical coordinates are 112°51 39 to 113°13 20 east longitude, between 34°52 and 35°2 48 north latitude) is the origin of the geographical indication of iron stick yam.

2. Common yam is also cultivated in Boai, Wuzhi, Wenxian and other places in Henan, Shanxi, Shaanxi, Shandong, Hebei, Zhejiang, Hunan, Sichuan, Yunnan, Guizhou, Guangxi and other places. Guangxi, Hebei, Henan and other places constitute the main yam cultivation areas in China.

There are generally slender iron stick yams and coarse ordinary yams on the market, in fact, one is the northern yam and the other is the southern yam, the northern yam is the iron stick yam, with high starch content and suitable for making soup, and the other is the southern yam, which has a higher moisture content and is more suitable for stir-frying.

Hardcore yams are more slender than regular yams.

The main nutrients of yam, including starch, protein, free amino acids, mucilage (polysaccharides and glycoproteins) and minerals, are higher than those of ordinary yams.

And its reducing sugar content is low, not easy to turn yellow, and the moisture content is also low, which is very easy to preserve. In addition, iron stick yam has a higher edible value than ordinary yam because of its high starch content and sweet taste.

The reason why the iron stick yam is the first among many yams is not in vain.

The reason why it is ** is higher, firstly, the origin is limited, the "authentic" iron stick yam must be produced in the area of Jiaozuo in ancient Huaiqing Mansion, and secondly, the output is limited, and the output of iron stick yam is lower than that of ordinary yams, only 1 4 to 1 3 of ordinary yams. Since the production area is limited, why not replace it with other yams? The reason is that the quality of the iron stick yam is irreplaceable, and the nutritional value is far beyond that of ordinary yams.

Although household use can be informal, but if it is a medicinal material, it is best to take an iron rod and a yam. Therefore, scarcity is expensive, and iron stick yams, especially iron stick yams, are naturally much more expensive.

Yam has high nutritional value, eat a little with it every day, warm yang and nourish the kidneys, and strengthen the body!

Huai yam, the medicinal value is higher than that of ordinary yams, and it has tonic properties