Pear

Scientific classification:

Kingdom: Plantae

Order: Rosales

Family: Rosaceae

Tribe: Maleae

Genus: Pyrus

History:

Pear cultivation is lost in antiquity: a pear tree is mentioned in the Bible back to 1000 years BC; The cultivation of apple was widely known in even before the time of Alexander the Great; Greeks and Romans had a great number of cultivars of this specimen. Currently, they number in thousands and still new varieties of plants are being developed.

General characteristics:

Pear (Pirus Tourn.)  is any of several tree species of genus Pyrus in the family Rosaceae. Most pears are deciduous; there are from 2 to 5 pistils in the gynoecium. The ovaries intergrow taking the form of circles; This genus contains about 50 species, of which several have been cultivated since ancient times. They are apple, rowan, quince, medlar and so on. This list includes a pear tree too (R. communis L). In those countries where it grows in a favorable climate it reaches quite considerable length of about 6 fathoms or more. Its leaves are arranged spirally in five rows, they are provided with rather long petioles. The form of the leaves varies depending on the species, from round and oval to oval-lanceolate or even lanceolate. The form of a correctly growing tree is pyramidal. The flowers are white, rarely tinted yellow or pink, 2–4 centimetres (0.79–1.57 in) diameter, and have five petals. The constitution of a fruit resembles that of an apple.

Chemical composition of pears:

Nutrient content per 100 g:

Protein 0.4 g Fat 0.3 g Carbohydrate 11 g

The vitamin content per 100 g:

Vitamin A: 0,01 mg

Vitamin B1: 0,02 mg

Vitamin B2: 0,03 mg

Vitamin B3: 0,05 mg

Vitamin B6: 0,03 mg

Vitamin B9: 2,0 g

Vitamin C: 13,0 mg

Vitamin E: 0,36 mg

Vitamin H: 0,1 g

Vitamin PP: 0,10 mg

The content of macronutrients per 100 g:

Iron: 2.3 mg

Potassium: 155 mg

Calcium: 19 mg

Silicon: 6 mg

Magnesium: 12 mg

Sodium: 14 mg

Sera: 6 mg

Phosphorus: 16 mg

Chlorine: 1 mg

The content of micronutrients per 100 g:

Bor: 130 g

Vanadium: 5 mg

Iodine 1 ug

Cobalt: 10 g

Manganese: 65 g

Copper: 120 mcg

Molybdenum: 5 mg

Nickel: 17 g

Rubidium: 44 g

Fluoride: 10 g

Zinc: 190 mg