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| Black olive trees are both fruit-bearing and timber-producing trees. Besides naturally growing trees, in recent years, many grafted black olive trees have been propagated by people in Thanh Chuong, and the fruit is bringing high economic benefits to the people of Thanh Chuong, with thousands of trees. A single old black olive tree can provide a local person with an income of 7-10 million VND per year. Photo: Lam Tung |
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| From June to August (lunar calendar) is the harvest season for black olives; people in communes throughout Thanh Chuong district, such as Cat Van, Thanh Nho, Thanh Duc, Hanh Lam, etc., are busy harvesting and supplying them to the market. Photo: Lam Tung |
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| Traders are also flocking to buy black olives directly from the orchards. Nguyen Viet Tung, from Hamlet 10, Thanh Nho Commune, said: "Some traders even order entire olive trees as soon as they bloom. They look at the flowers on the tree, estimate the weight of the olive tree that will bear fruit, and place orders with the owner for around 30,000 - 35,000 VND/kg." (Photo: Lam Tung) |
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| According to the experience of locals and traders, the older the Terminalia catappa tree, the more fruit it yields. To harvest the fruit, climbers usually use ropes and knives or sickles tied to long sticks to poke at the fruit. Photo: Lam Tung |
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| Many areas for harvesting canarium fruit are quite challenging, requiring locals to spread tarpaulins or nets to catch the fruit under the trees. The total canarium fruit production in Thanh Chuong district is estimated at over 600 tons per year on average. Photo: Lam Tung |
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| Black olives have become a famous specialty in Thanh Chuong, gradually becoming familiar to people in many localities when the season arrives. Photo: Lam Tung |
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| After harvesting, the canarium fruit is sold by locals to purchasing points or wholesale markets at prices ranging from 55,000 to 58,000 VND/kg depending on quality. From there, the fruit is transported to areas with high demand such as Vinh City, Hanoi, and supermarkets selling Vietnamese products... Photo: Lam Tung |
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| These days, canarium fruits are appearing in most markets in Thanh Chuong district and are being sold retail at prices ranging from 60,000 to 70,000 VND/kg. Photo: Lam Tung |
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| With its unique and fragrant flavor, the canarium fruit can be processed into many delicious and attractive dishes such as black canarium sticky rice, canarium stuffed with meat, canarium soup with chicken, pickled canarium, etc. Nowadays, black canarium is also processed and canned to ensure food safety and hygiene.
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Chemically, the fruit of the Canarium tree contains protein, fat, carbohydrates, beta-carotene, oleanolic acid, several minerals: Ca, K, P, Fe, Mg, Mn, Zn, Cu... and vitamin C. The seeds contain fatty acids. According to traditional medicine, the Canarium fruit has a sour, sweet, and astringent taste, a warm nature, and enters the lung meridian. It has the effects of clearing heat, generating fluids to quench thirst, detoxifying, benefiting the throat, and is non-toxic. It is used to treat throat diseases such as swelling and pain, cough with excessive phlegm, enteritis, dysentery, diarrhea, and thirst. The unripe fruit has a detoxifying effect.