Analysis of the Content of the Nutritive Components and Active Substances in the Bulbs of Tulipa tianschanica

The bulbs of Tulipa tianschanica were used as test materials, the basic nutritional components and bioactive substances in bulbs of different periods were determined and analyzed to explore the edible and medicinal development value of T.tianschanica distributed in China, in order to provide reference for the development and utilization of wild T.tianschanica resources in China.The results showed that the bulbs of T.tianschanica were rich in protein, starch, crude fiber, polysaccharide, vitamin C and calcium ect..With the original bulb consumption and regeneration bulb′s development, the contents of protein, crude fiber, vitamin C and calcium in bulb were firstly decreased and then increased, the starch content kept increasin, while the contents of polysaccharide were decreased firstly, then increased and then decreased.The highest contents of crude fiber and vitamin C were in sprout period, which were（7.679±0.172）g·（100 g）^-1,（49.851±0.636）mg·（100 g）^-1 respectively.The highest content of polysaccharide was（41.787±2.395）g·（100 g）^-1 in wilting period.The highest contents of protein, starch and calciumand were（18.937±0.144）g·（100 g）^-1,（19.197±0.270）g·（100 g）^-1 and（442.469±2.342）mg·（100 g）^-1 respectively in dormancy period.Furthermor, the bulb also contains amino acids, reducing sugars, saponins, flavonoids, tannins, fats, iron, zinc and small amounts of colchicine.The contents of colchicine ranged from（9.277±0.266）μg·（100 g）^-1 to（19.394±0.456）μg·（100 g）^-1.