Depending on the grape variety selected, they can be categorized as: Seedless White, Premium Green, King of Kings, Mare's Milk, Man's Fragrance, Rose Fragrance, Golden Queen, Fragrant Princess Red, Blackcurrant, Desert King, Chocolate, Yogurt Seed, and Saxaul Raisin. This includes seeded, seedless, green, red, golden, dark red, purple, and black varieties.Flavors range from sweet, sweet-tart, to extra sweet. Benefits Blood and Qi Tonification Women are prone to mild anemia due to monthly menstrual blood loss, often appearing pale, lacking rosy cheeks, listless, and feeling cold with perpetually chilly hands and feet.Grapes can help restore a healthy complexion. Traditional Chinese medicine attributes grapes with the following benefits: "nourishing blood, strengthening tendons and bones, promoting digestion, quenching thirst, boosting energy, facilitating urination, nourishing the kidneys, benefiting the liver, and improving complexion." Regular consumption can alleviate cold extremities, lower back pain, anemia, and enhance immunity. Working women may consider eating a small handful of raisins daily; noticeable effects can be observed after seven consecutive days.Note: Avoid cold foods like melons during consumption to prevent efficacy interference. This remedy also effectively treats excessive vaginal discharge.
Other Benefits
1. Boosts metabolic function.
2. Rapidly alleviates fatigue.
3. Eliminates excess fat, improves blood circulation, lowers elevated blood pressure, and normalizes blood pressure.
4.Reduces obesity.
5. Improves gastrointestinal function and relieves constipation. Grapes are rich in essential nutrients like amino acids. Moderate consumption can regulate qi and blood deficiency, lung deficiency cough, palpitations and night sweats, joint pain, neurasthenia, and anemia. Studies show grape seed oil extracted from grape seeds has a laxative effect on animals.However, raisins contain fewer seeds, and excessive consumption may cause "internal heat" in some individuals, potentially worsening constipation.
The second advantage of raisins is their long shelf life compared to fresh grapes, which spoil easily. Grapes' high sugar content inhibits microbial growth like mold, making preservation straightforward. Traditionally, raisins were made by sun-drying whole grapes with skins and stems intact for storage.
This method aligns well with modern scientific understanding, as grape skins contain polyphenols that inhibit mold growth.
Nutritional Analysis
1. Raisins are rich in iron and calcium.From a modern scientific perspective, this practice is highly logical. The polyphenols in grape skins inhibit mold growth.
Nutritional Analysis
1. Raisins are exceptionally rich in iron and calcium, making them an excellent tonic for children, women, and those with anemia or weakened constitutions. They nourish blood and qi, warm the kidneys, and help improve anemia and thrombocytopenia;
2.Raisins contain substantial glucose, nourishing the heart muscle and aiding recovery for coronary heart disease patients;
3. Raisins also contain various minerals, vitamins, and amino acids. Regular consumption provides beneficial nourishment for those with neurasthenia and excessive fatigue, and they are an excellent dietary remedy for women's health issues.
Many dried fruits possess unique health benefits, but raisins' nutritional profile particularly impresses nutritionists. Recent American research indicates that consuming raisins equivalent to 400 calories daily effectively lowers blood cholesterol while inhibiting oxidation of harmful LDL cholesterol.Furthermore, raisins improve rectal health due to their fiber and tartaric acid content, which expedite waste passage through the rectum and reduce stagnation in the intestines. More excitingly, raisins contain resveratrol, a compound that effectively prevents cellular mutations, inhibits malignant tumor growth, and blocks leukemia cell division.Furthermore, the fiber in raisins prevents fructose from converting into triglycerides—a type of blood fat—thereby reducing the risk of heart disease.
General Preparation Method
1. Selecting Raw Materials: Choose grapes with thin skins, plump and tender flesh, attractive appearance, and high sugar content. Common varieties include seedless types like "Seedless White" and "Seedless Dew," as well as seeded varieties like "Rose Fragrance" and "Milk." The fruit should be fully ripe but not overripe.
2. Cluster Trimming: After harvest, trim off undersized or damaged berries. Divide overly large clusters into smaller bunches and spread them in a single layer on drying trays.Soak in a 1.5–4% sodium hydroxide solution for 1–5 seconds. Thin-skinned varieties may also be treated with a 0.5% sodium carbonate solution or a sodium carbonate-sodium hydroxide mixture for 3–6 seconds. Immediately rinse thoroughly with clean water after alkali treatment. This process reduces drying time by 8–10 days.
4. Sun-Drying: Spread grapes on drying trays and sun-dry for approximately 10 days. When the surface begins to dry, turn the entire batch. Place the slightly wetter grapes on the top layer to continue drying. Once two-thirds of the fruit appears dry and no grape juice seeps out when squeezed by hand, stack the trays and air-dry in the shade for one week.Under clear weather conditions, the total drying period is approximately 20–25 days.
5. Rehydration: Stack the grape clusters for 15–20 days to ensure even drying. Remove the stems to complete the product.
6. Packaging: Raisins are packaged in either cloth bags or wooden crates. Cloth bags hold either 50 kg or 25 kg, while wooden crates typically contain 25 kg.
II. Turpan's Special Production Method
In Turpan, Xinjiang, ripe grapes treated with lye are hung indoors in a well-ventilated space to dry in the shade.Turpan's hot, arid climate features brick drying rooms with walls perforated with plum-blossom-shaped holes. Wooden racks support the ripe seedless grapes, which are dried for approximately 40 days under hot, dry winds. Raisins produced by this shade-drying method exhibit superior quality, a translucent appearance, and no discoloration.Sun-drying Methods 1. Direct sun exposure produces brown raisins. 2. Drying in shaded rooms. 3. A recent rapid drying method involves dehydrating grapes before placing them in shaded rooms or drying machines, significantly reducing processing time.
Only fully ripe grapes are used for raisin production. Raisins contain only 15-25% moisture and up to 60% fructose, making them exceptionally sweet. This high sugar content allows raisins to be stored for extended periods. Over time, the fructose may crystallize, but this does not affect their edibility. Raisins can be eaten as a snack, used in baked goods, or incorporated as a cooking ingredient in certain regional dishes.
Sun-dried raisins tend to become sour; the highest quality raisins are shade-dried.
The most renowned raisins come from seedless grapes grown in Turpan, Xinjiang, China. Turpan's hot, arid climate is ideal for drying. Brick-built shade-drying rooms feature walls with numerous holes and wooden racks in the center. Ripe seedless grapes are strung on these racks. Hot air circulation quickly produces high-quality raisins.
Suitable for: Children, pregnant women, and individuals with anemia, as they contain higher sugar and iron content than fresh grapes; those with neurasthenia, excessive fatigue, physical exhaustion, emaciation, or premature aging; individuals with lung deficiency coughs and night sweats; those suffering from rheumatoid arthritis and limb joint pain; and cancer patients.