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Illicium verum

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Illicium verum is a medium-sized evergreen tree native to South China and northeast Vietnam.

Illicium verum00
Illicium verum00

It is widely known by many names, including star anise, badian, and Chinese star anise. The scientific name reflects its nature; "Illicium" comes from a Latin word meaning "entice," while "verum" means "true" or "genuine." This species is highly valued globally for its fragrant fruit. The reddish-brown, star-shaped fruit is harvested just before it fully ripens. This fruit serves as a powerful spice and a source for many different industries.

Star Aniseed back
Star Aniseed back

The physical structure of the fruit is quite complex and distinct. It is a capsule-like structure known as a follicetum. This star shape is formed by six to eight follicles arranged in a single whorl. Each follicle is boat-shaped, measuring between 1 and 2 centimeters in length. These follicles are hard, wrinkled, and reddish-brown in color. Inside every follicle, there is exactly one seed. These seeds are approximately 8 to 9 millimeters long and 6 millimeters wide. They are compressed, ovoid, smooth, shiny, and brittle. When the fruit reaches maturity, it opens along the ventral edge to release the seeds.

Culinary uses for star anise are diverse across many different cultures. The spice contains anethole, a chemical compound that provides its distinct flavor. This is the same compound found in the unrelated anise plant. In Chinese cuisine, it is a key ingredient in traditional five-spice powder. It is also a major component in the Vietnamese noodle soup known as phø. In the Indian subcontinent, it is used to prepare biryani and masala chai. Western cooks often use it as a cheaper substitute for anise in baking. It is also used in the production of the liqueur Galliano. Some people steep the pods in coffee or mulled wine to enrich the flavor. Because hot water permeates the pods easily, they can be used multiple times.

Beyond cooking, star anise plays a critical role in modern medicine. It is the primary source of shikimic acid. This chemical is a precursor used to synthesize the anti-influenza drug oseltamivir, commonly known as Tamiflu. Before 2012, the pharmaceutical company Roche used up to 90% of the world's annual star anise crop for this purpose. This massive demand placed a heavy burden on the global supply of the spice. However, a significant change occurred in the mid-2000s. In 2005, an industrial method was discovered to produce shikimic acid through the fermentation of E. coli bacteria. This new process was applied during the 2009 swine flu pandemic. It helped address shortages of Tamiflu and stabilized the price of star anise.

It is vital to distinguish Illicium verum from other similar-looking species. Not all plants in this group are safe for human consumption. For example, Illicium anisatum, known as Japanese star anise, is highly toxic and inedible. It contains a neurotoxin called anisatin. Ingesting this toxin can cause severe inflammation of the kidneys, urinary tract, and digestive organs. It can even lead to serious neurological effects such as seizures. In Japan, this species is burned as incense rather than eaten. Another relative, Illicium parviflorum or swamp star anise, is also highly toxic. This species is found in the southern United States and should never be used for cooking or folk remedies.

Scientists use several methods to tell these species apart accurately. Researchers have used fluorescent microscopy and gas chromatography to distinguish them. Others have employed thin layer chromatography combined with HPLC-MS/MS. These technical methods ensure that the genuine spice is identified correctly. You can also tell Illicium verum apart from Illicium anisatum by looking at the fruit. The fruit of Illicium anisatum is smaller and does not form a regular star shape. This happens because some of its carpels undergo abortion during development. Additionally, the follicles of the Japanese variety are not swollen in the middle and have a more pointed apex. The seeds of the Japanese species are also flatter or more spherical.

Today, star anise remains a major commercial crop. China is the primary producer, followed by Vietnam and other Southeast Asian nations. It is grown extensively in India and many other Asian countries. The fragrant oil extracted from the plant is used in many everyday products. You can find star anise oil in perfumes, soaps, toothpastes, and mouthwashes. It is also used in various skin creams. From the kitchen to the pharmacy, this small, star-shaped fruit connects many different parts of human life.

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File:Star Aniseed back.jpg
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