What is the fiber content of common foods? Which fruits contain the most fiber?

Cellulose is the most widely distributed and abundant polysaccharide in nature. Eating cellulose fruits can help digestion, smooth bowel movements, and regulate the body's cholesterol and fat levels. What is the cellulose content of common foods? You can open the Encyclopedia Knowledge Network to learn more!

Contents of this article

1. Fiber content of common foods

2. Which fruit contains more fiber?

3. How to extract cellulose from plants

Fiber content of common foods

Food fiber is also one of the nutrients contained in food that is essential for maintaining human health. It is effective in relieving constipation, detoxifying, lowering blood lipids, and preventing and treating obesity, so it is called the seventh nutrient.

Wheat bran: 31%

Cereals: 4-10%, ranked from most to least: wheat grains, barley, corn, buckwheat noodles, coix seeds noodles, sorghum rice, and black rice.

Cereals: 8-9%;

Oatmeal: 5-6%

The cellulose content of potatoes, sweet potatoes and other tubers is about 3%.

Beans: 6-15%, from most to least, soybeans, green beans, broad beans, kidney beans, peas, black beans, red beans, mung beans

Vegetables: Bamboo shoots have the highest content. The cellulose content of dried bamboo shoots reaches 30-40%, and that of peppers exceeds 40%.

Fungi (dried): The cellulose content is the highest, among which pine mushrooms have a cellulose content of nearly 50%. Those with more than 30% are arranged from most to least as follows: hair algae, shiitake mushrooms, white fungus, and black fungus.

Nuts: 3-14%. Those above 10% include black sesame, pine nuts, and almonds; those below 10% include white sesame, walnuts, hazelnuts, pecans, sunflower seeds, watermelon seeds, and peanut kernels.

Fruits: The highest content is in dried red fruits, with a cellulose content of nearly 50%, followed by dried mulberries, cherries, sour dates, black dates, large dates, small dates, pomegranates, apples, and pears.

What fruit contains more fiber?

Fruits such as grapefruit, pear, sour jujube, cherry, green-skinned pomegranate, apple, citrus, and strawberry contain a lot of fiber. Eating fiber fruits can help digestion, facilitate bowel movements, and regulate the body's cholesterol and fat levels.

Cellulose is a macromolecular polysaccharide composed of glucose. It is insoluble in water and general organic solvents. It is the main component of plant cell walls. Cellulose is the most widely distributed and abundant polysaccharide in nature, accounting for more than 50% of the carbon content in the plant kingdom. Cotton has a cellulose content of nearly 100%, which is the purest natural source of cellulose. In general wood, cellulose accounts for 40-50%, and there are 10-30% hemicellulose and 20-30% lignin.

How to extract cellulose from plants

1. Boil the plants in 2% NaOH at 100°C for 100 min;

2. When the solution temperature drops to 70-80°C, add 5% hydrogen peroxide and continue heating for 0.5h, keeping the temperature at 70-80°C;

3. Filter and wash the residue thoroughly with distilled water until it becomes neutral. After drying, the fiber sample is obtained.