一： Dehydration Process: A Scientific Experiment on Umami
The production of dehydrated shiitake mushrooms is a precise process of preserving their umami flavor. Freshly picked 80% ripe shiitake mushrooms need to complete pre-treatment such as grading, stem cutting and cleaning within 6 hours, and then enter the gradient drying room。
（1）Low-temperature dehumidification stage: Circulate hot air at 35℃ for 2 hours to quickly remove surface moisture and prevent the gills of bacteria from turning black.
（2）Medium-temperature setting stage: 45℃ for 4 hours continuously, promoting the conversion of ergosterol into vitamin D₂, while locking in umami substances such as guanylic acid;
（3）High-temperature aroma enhancement stage: 55℃ for the final 2 hours to stimulate the unique lignin aroma of shiitake mushrooms, and ultimately form a dry product with a moisture content of no more than 13%.
二：Nutritional Concentration: Great Health in a Small Body
Dehydrated shiitake mushrooms can be regarded as the “master of space folding” in the field of nutrition. Each 100 grams of dried shiitake mushrooms contain
Vitamin D₂ : 10-15μg (more than 10 times that of fresh shiitake mushrooms), helps calcium absorption;
Dietary fiber: 31.6g (more than twice that of oats), promoting intestinal peristalsis;
Lentinan: 3.8g (with immunomodulatory potential), its content is 2.3 times that of fresh lentinan.
Protein: 20.3g (containing 8 essential amino acids), lysine content reaches 1.2g/100g, far exceeding that of ordinary vegetables.
三：Minerals: The “Concentrated Essence” of Trace Elements
Dehydrated shiitake mushrooms are rich in minerals such as potassium, phosphorus, magnesium, zinc and selenium, and their content is 2 to 3 times higher than that of fresh shiitake mushrooms
（1）Potassium: Every 100 grams of dehydrated shiitake mushrooms contain approximately 1200 milligrams of potassium, which helps maintain heart function and stable blood pressure.
（2）Phosphorus: It participates in energy metabolism and bone formation. Every 100 grams of dehydrated shiitake mushrooms contain approximately 300 milligrams of phosphorus.
（3）Magnesium: It plays a significant role in neuromuscular function and blood sugar regulation. Every 100 grams of dehydrated shiitake mushrooms contain approximately 100 milligrams of magnesium.
（4）Zinc: Boosts immunity and promotes wound healing. Each 100 grams of dehydrated shiitake mushrooms contain approximately 8 milligrams of zinc.
（5）Selenium: It has antioxidant effects. Every 100 grams of dehydrated shiitake mushrooms contain approximately 10μg of selenium.
四：Active Ingredient: The “Natural Guardian” of immune regulation
（1）Lentinan: The content of lentinan in dehydrated lentinan is relatively high, and it has a potential role in regulating immune function. It can activate macrophages and natural killer cells, promote the proliferation of lymphocytes, and enhance the body’s antiviral ability. Long-term and moderate consumption can help reduce the probability of catching a cold and has an auxiliary improvement effect on those with weakened immune function.
（2）Ergothioneine: A powerful antioxidant, it can eliminate free radicals, delay oxidative damage to cells, and has potential benefits in preventing chronic diseases.
（3）Polyphenols: They have anti-inflammatory, anti-cancer and neuroprotective effects. They work synergistically with ergothioneine to enhance the antioxidant effect.
五：Umami substances: Concentrated “natural monosodium glutamate
The umami flavor of dehydrated shiitake mushrooms mainly comes from guanylic acid and glutamic acid. During the drying process, ribonucleic acid is more likely to be released and hydrolyzed into guanosine monophosphate, whose freshness is about several dozen times that of ordinary monosodium glutamate. Therefore, the aroma and freshness of dehydrated shiitake mushrooms far exceed those of fresh ones, making them an excellent choice for natural condiments.
六：Calories and Fat: A healthy choice low in calories and fat
Dehydrated shiitake mushrooms have a relatively low calorie content, approximately 274 kilocalories per 100 grams, and their fat content is only 1.8 grams (dry weight), with a relatively high proportion of unsaturated fatty acids. Its rich dietary fiber can increase a sense of fullness, reduce the intake of other high-calorie foods, and help control weight。
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Post time: Sep-30-2025