Chrysanthemum Flowers

Botanical Profile

Chrysanthemum flowers are derived predominantly from Chrysanthemum × morifolium, an East Asian cultivated hybrid of the Asteraceae. The dried flowers are widely used in East Asian food and herbal traditions.

Chrysanthemum × morifolium (Ramat.) Hemsl. is a perennial cultivated hybrid of the Asteraceae. It comprises numerous cultivars and forms grown as ornamental, tea and herbal plants. The flower heads consist of ray and disc florets and, depending on the cultivar, display white, yellow or other colours.

Primarily the dried flower heads are used. Botanically, precise species and cultivar classification in chrysanthemums is complex because cultivated forms, hybrids and historical names overlap extensively.

For raw-material quality, cultivar, flower colour, harvest time, drying, absence of sulphuring, pesticide residues, foreign matter and microbiological quality are relevant. In floral raw materials, colour, odour and integrity are important sensory parameters.

Botanically, chrysanthemum flowers represent an East Asian cultivated member of the Asteraceae with strong links to tea, culinary and herbal traditions.

Phytochemistry

Chrysanthemum flowers contain flavonoids, phenolic acids, chlorogenic-acid derivatives, luteolin and apigenin derivatives, essential-oil constituents, carotenoids and other floral pigments. Composition varies considerably according to cultivar, origin and processing.

Yellow flowers frequently contain more visibly pronounced carotenoid fractions, while white flowers may show different sensory and phenolic profiles. Drying and storage influence aroma, colour and polyphenol content.

Chromatographic fingerprints, flavonoid profiles, pesticide residues and sulphuring parameters are analytically relevant. Clear specification is particularly important for imported raw materials.

Phytochemically, chrysanthemum flowers are polyphenol- and aroma-containing floral raw materials with marked cultivar dependence.

Traditional Uses

Chrysanthemum flowers have a long tradition in China, Korea and Japan. They are used there as floral tea, a culinary ingredient and a component of classical herbal preparations. The cultural context ranges from seasonal foods to tea ceremonies and festival traditions.

In Chinese materia medica, chrysanthemum flowers are known as Ju Hua. Different cultivars and origins are described and differentiated sensorially and qualitatively.

Traditional uses are to be understood in the context of East Asian herbal and food traditions. For modern products, botanical identity, cultivar and legal category must be considered separately.

For public profiles, the flower should be presented as a culturally significant East Asian floral raw material, not merely as an ornamental garden plant.

Current Research

Current research on Chrysanthemum × morifolium investigates flavonoids, phenolic acids, essential-oil profiles, cultivar differences, drying, pesticide residues and quality markers. Genetic and breeding work on flower colour and constituent formation is also important.

Analytical studies compare different commercial qualities and origins of chrysanthemum flowers, using chromatographic fingerprints, colour stability and sensory characteristics.

Another field of research concerns food and tea quality, including the extraction of polyphenols in hot infusions. Results depend strongly on cultivar and processing.

Scientifically, chrysanthemum flowers are a well-studied East Asian floral raw material at the intersection of cultivated-plant science, food chemistry and herbal analysis.

Sources

• Plants of the World Online. Kew Science. Royal Botanic Gardens, Kew: Chrysanthemum × morifolium (Ramat.) Hemsl.
• Chinese Pharmacopoeia: Chrysanthemi Flos.
• PubMed literature on Chrysanthemum flavonoids, phenolic acids and flower quality.
• Scientific literature on East Asian floral teas and chrysanthemum raw materials.