Perilla frutescens, also called deulkkae (Korean: 들깨) or Korean perilla,[2][3] is a species of Perilla in the mint family Lamiaceae. It is an annual plant native to Southeast Asia and Indian highlands, and is traditionally grown in the Korean peninsula, southern China, Japan and India as a crop.[4]
An edible plant, perilla is grown in gardens and attracts butterflies. It is aromatic with a strong mint-like smell. A variety of this plant, P. frutescens var. crispa known as "shiso", is widely grown in Japan. In the United States, perilla is a weed pest, toxic to cattle after ingestion.[5][6]
The genome of a dark-leaved domesticated variety has been sequenced.[7]
Description
Perilla frutescens (L.) Britton from the Japanese Seikei Zusetsu agricultural encyclopedia
Perilla is an annual plant growing 60–90 cm (24–35 in) tall, with stalks which are hairy and square.[8]
The leaves are opposite, 7–12 cm (3–4+1⁄2 in) long and 5–8 cm (2–3 in) wide, with a broad oval shape, pointy ends, serrated (saw-toothed) margins, and long leafstalks. The leaves are green with occasional touches of purple on the underside.[8]
The flowers bloom on racemes at the end of branches and the main stalk in late summer. The calyx, 3–4 mm (1⁄8–5⁄32 in) long, consist of upper three sepals and the hairy lower two. The corolla is 4–5 mm (5⁄32–3⁄16 in) long with its lower lip longer than the upper. Two of the four stamens are long.[8]
Along with other plants in the genus Perilla, the plant is commonly called "perilla". It is also referred to as Korean perilla, due to its extensive cultivation in Korea and use in Korean cuisine.
In the United States, where the plant has become a weed, the plant is known by many names, such as perilla mint, beefsteak plant, purple perilla, Chinese basil, wild basil, blueweed, Joseph's coat, wild coleus and rattlesnake weed.[6]
The plant was introduced to the Korean peninsula before the Unified Silla era, when it started to be widely cultivated.[4]
In its natural state, the yield of perilla leaves and seeds is not high. If the stem is cut about 5 cm (2 in) above ground level in summer, a new stalk grows, and it produces more fruit. Leaves can be harvested from the stem cut off in the summer, as well as from the new stalk and its branches, throughout summer and autumn. The seeds are harvested in autumn when the fruits are ripe. To collect perilla seeds, the whole plant is harvested, and the seeds are beat out of the plant, before being spread for sun drying.
Traditional medicine, phytochemicals, and toxicity
Although perilla is widely cultivated as an edible plant for humans, it is toxic to cattle and other ruminants, as well as horses.[5] In grazing cattle, plant ketones cause acute respiratory distress syndrome,[5] also called "panting disease".[6]
In India, perilla seeds are roasted and ground with salt, chilis, and tomatoes to make a savoury side dish or chutney. In Kumaon, the seeds of cultivated perilla are eaten raw, the seed oil is used for cooking purposes, and the oil cake is consumed raw or fed to cattle. The roasted seeds are also ground to prepare a spicy chutney. The seeds and leaves of perilla are also used for flavoring curries in north east India. Manipuri cuisine uses the ground roasted seed in a salad. Its seeds are used in salads and meat dishes by the Khasis and the Assamese, Bodos and Nagas are also well aware of its uses.
Japan
In the Tōhoku regions of northeastern Japan, it was believed to add ten years to a person's lifespan. A local preparation in Fukushima Prefecture, consists of half-pounded non-glutinous rice patties, which are skewered, smeared with miso, blended with roasted and ground jūnen seeds, and roasted over charcoal.
Oil pressed from the seeds was historically used to in lamps. The warlord Saitō Dōsan (1494–1556) was said to have been originally a seller of egoma seed oil.
Korea
In Korean cuisine, perilla leaves (Korean: 깻잎) are widely used as a herb and a vegetable. Perilla can be used fresh as a ssam vegetable, fresh or blanched as a namul vegetable, or pickled in soy sauce or soybean paste to make pickle or kimchi.
Deulkkae, the perilla seeds, are either toasted and ground into powder, or toasted and pressed to make perilla oil. Toasted deulkkae powder is used as a spice and a condiment for soup, seasoned vegetable dishes, noodle dishes, kimchi, and fishcake. It is also used as a coating or topping for desserts: Yeot and several rice cake varieties can be coated with toasted perilla powder. Perilla oil made from toasted perilla seeds is used as a cooking oil and as a condiment.
Having a distinctive nutty aroma and taste, the oil pressed from the toasted perilla seeds is used as a flavor enhancer, condiment, and a cooking oil in Korean cuisine. The press cake remaining after pressing perilla oil can be used as natural fertilizer or animal feed.[20]
^ abcdSteckel, Larry (2006). Perilla Mint(PDF). Vol. Extension PB 135. University of Tennessee Institute of Agriculture. Archived from the original(PDF) on 12 November 2020. Retrieved 21 November 2018.
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