From Wikipedia:
Characteristics
It is a deciduous tree growing to 25 metres (82 ft) tall with a trunk up to 70 cm diameter. The bark is brown, smooth on young trees, becoming scaly to shaggy on old trees. The leaves are pinnate, 50–70 cm long and 30–40 cm broad, with 10–40 leaflets, the terminal leaflet usually absent (paripinnate) but sometimes present (imparipennate); the individual leaflets 9–15 cm long and 2.5–4 cm broad, with an entire or weakly serrated margin. The young leaves are reddish-brown or purple, and have a smell. The flowers are produced in summer in panicles 30–50 cm long at the end of a branch; each flower is small, 4–5 mm diameter, with five white or pale pink petals. The fruit is a golden capsule 2–3.5 cm long, containing several winged seeds.[4][7][8][9]
It is similar to Ailanthus altissima in appearance, but their leaves smell differently. Toona has rough bark, while A. altissima has smooth bark.
Cultivation
Toona sinensis can reproduce both sexually and asexually, including seed propagation, cutting propagation and tissue culture.
Seed propagation can provide large quantity of seedlings, which is suitable for the need of mass cultivation. Seeds soaked in warm water for a moderate amount of time before sowing are more likely to germinate. Normally, seeds of T. sinensis are sowed between the late March and early April in East Asia, and the time may vary depending on the actual planting area. Saplings grown from seeds in spring can be transplanted with leaves in fall.[10]
Cutting propagation uses a piece of stem or root of mature plant to grow a new plant in media like moist soil. This method has a higher survival rate in saplings than other methods. Usually semi-lignified stems are used in planting because those that have undergone full lignification process are hard to take root or root slowly and stems that have not lignified are easy to decay after planting. NAA or Vitamin D solutions can help with the rooting of cut stems. Normally, T. sinensis stems are cut from mature plant and cultivated between late June and early July in East Asia, and time may differ depending on the actual planting area.[10]
Tissue culture of T. sinensis started from the late 1980s in China. Successful cases include the culture of T. sinensis seedlings on MS medium together with IAA and BA hormones. Since the 1980s, researchers have collected stems of mature T. sinensis trees from different regions and built a set of methods specifically for the tissue culture of rare varieties of Toona sinensis.[11]
Uses
Food and Nutrition
The young leaves of T. sinensis are extensively used as a vegetable in China; they have a floral, yet onion-like flavor, attributed to volatile organosulfur compounds.[12] Plants with red young leaves are considered of better flavour than those where the young leaves are green.[4][13][14]
In China and Southeast Asian countries such as Malaysia, the young leaves of Toona sinensis or commonly known as Chinese Mahogany is used to make Toona paste, which is used as a condiment to serve with plain rice porridge as breakfast and simple meals, or to enhance the flavour of a dish or soup. Common dishes made with Toona paste are Chinese Mahogany fried rice, Chinese Mahogany beancurd, and Chinese Mahogany mushroom soup.
The leaves contain Vitamin E, and high amounts of iron, calcium and chlorophyll.[15]
Lumber and landscape use
The timber is hard and reddish; it is valuable, used for furniture making[4][9] and for bodies of electric guitars, as a common (and substantially cheaper) replacement for Swietenia mahogany (“true mahogany”), which is now commercially restricted from being sourced natively.[16]
Outside its native region T. sinensis is valued more as a large ornamental tree for its haggard aspect.[8][17] It is by far the most cold-tolerant species in the Meliaceae and the only member of the family that can be cultivated successfully in northern Europe.
Medicine
According to Traditional Chinese Medicine (TCM), the leaves of T. sinensis are beneficial for digestion and cough problems, and can help to stop bleeding.[18]
Recent researches find out that polysaccharides contained in T. sinensis leaves can protect liver cells in high-fat or high-carbohydrate diets.[19][20] Quercetin extracted from leaves is found a natural antioxidant, and can act as a cancer preventive.[21]
Chemical constituents
The leaves of T. sinensis has a relative high content of nitrite, which is about 157 to 160 mg/kg.[22] However, after boiling with water, the amount of nitrite left is only about 7 mg/kg, which is safe to eat. Because the content of nitrite will increase as time passes, T. sinensis leaves are not suitable for long time storage.
The quercetin contained in T. sinensis leaves can induce cell cycle arrest and lead to apoptosis of cells.[23]
Culture
In Chinese literature, Toona sinensis is often used symbolically, with a mature tree representing a father. This manifests itself occasionally when expressing best wishes to a friend’s father and mother in a letter, where one can write “wishing your Toona sinensis and daylily are strong and happy” (simplified Chinese: 椿萱并茂; traditional Chinese: 椿萱並茂; pinyin: chūnxuānbìngmào), with Toona sinensis metaphorically referring to the father and daylily to the mother.
Tea from the Suren Toona Tree
(Artikel generated by Bard, the AI of Google)
Suren wood tea is made from the wood of the Suren Toona tree. The tree is native to Southeast Asia and is also known as the Burmese Rosewood tree. The wood of the tree has a pleasant aroma and flavor, and it is often used to make furniture, musical instruments, and other objects. It can also be used to make tea.
The main ingredients in Suren wood tea are:
- Tannins: Tannins are a type of polyphenol that have antioxidant properties. They can help to protect the body against damage from free radicals.
- Flavonoids: Flavonoids are another type of polyphenol that have antioxidant properties. They can also help to improve blood circulation and reduce inflammation.
- Triterpenes: Triterpenes are a type of lipid that have anti-inflammatory properties. They can help to reduce inflammation in the body.
- Saponins: Saponins are a type of compound that has a foaming action. They can help to boost the immune system and improve digestion.
Suren wood tea is said to have a number of health benefits, including:
- Improve digestion: The tannins and saponins in Suren wood tea can help to improve digestion by breaking down food and stimulating the production of digestive enzymes.
- Boost the immune system: The triterpenes in Suren wood tea can help to boost the immune system by fighting off infection.
- Reduce inflammation: The flavonoids and triterpenes in Suren wood tea can help to reduce inflammation in the body.
- Improve blood circulation: The tannins in Suren wood tea can help to improve blood circulation by reducing the stickiness of blood cells.
- Relieve stress: The aroma of Suren wood tea is said to be calming and relaxing, which can help to relieve stress.