The raw material of tangerine peel is orange peel. Tangerine peel is the dry peel obtained by drying the peel of citrus and other fruits. Because it can be kept for a long time after drying, it is called "tangerine peel". Chenpi is bitter and aromatic. Its bitter substances are "limonoids" represented by limonin and picrin. This limonoid has a mild taste and is easily soluble in water.
Growth environment:
The growth, development, flowering and fruiting of citrus fruit trees are closely related to environmental conditions such as temperature, sunshine, water (humidity), soil, wind, altitude, terrain and slope aspect. These conditions affect the maximum number of temperatures. Even a difference of 0.5°C in temperature can sometimes produce completely different results. The growth and development of citrus requires a temperature of 12.5 to 37°C.
Flower bud differentiation in autumn requires day and night temperatures of about 20°C and 10°C respectively. The soil temperature for root growth is roughly the same as that of the aboveground part. If the temperature is too low, the citrus will be frozen. Sweet oranges will be frozen at -4℃. Wenzhou satsuma mandarins will freeze their branches and leaves at -5℃. Sweet oranges will be frozen below -5℃. Wenzhou satsuma mandarins will be frostbitten below -6℃. Sweet oranges - Below 6.5℃, Wenzhou mandarin oranges below -9℃ will freeze the plants to death.
Physiological characteristics
1. Tangerine peel: often peeled into several petals, connected at the base, and some are irregular flakes, 1 to 4 mm thick. The outer surface is orange-red or reddish-brown, with fine wrinkles and sunken dot-like oil chambers; the inner surface is light yellow-white, rough, with yellow-white or yellow-brown tendon-like vascular bundles. The texture is slightly hard and brittle. It smells fragrant and tastes pungent and bitter.
2. Citrus tangerine peel: often has 3 connected petals, neat shape, uniform thickness, about 1mm, large dotted oil chambers, transparent and clear to light. The quality is softer.
Source of the above content: Baidu Encyclopedia - Chenpi