Castor oil plant & Castor Seeds

April 27th, 2007

The Botanical name is Ricinus and Indian name is Arandi.
The name Ricinus is a Latin word for tick; the seed is so named because it has markings and a bump at the end which resemble certain ticks. The common name “castor oil” likely comes from its use as a replacement for castoreum, a perfume base made from the dried perineal glands of the beaver (castor in Latin)

Plant Description:
It is a small annual plant.It has well developed roots,with green and redish stems which
becomes hollow with age.The fruit is spherical capsule with small grey seeds with small
spots. The castor oil plant, Ricinus communis (sometimes called mole bean after the belief that the “beans” can be placed in mole tunnels to poison the animals[citation needed]), is a plant species of the Euphorbiaceae and the sole member of the genus Ricinus and of the subtribe

Ricininae. Its seed is the castor bean which, despite its name, is not a true bean.
Castor seed is the source of castor oil, which has a wide variety of uses. The seeds contain
between 40% and 60% oil that is rich in triglycerides, mainly ricinolein. They also contain
ricin, a poison, which is also present in lower concentrations throughout the plant.

Although the highly toxic nature of castor bean (Ricinus communis) is well recognized, reports of human toxicity in the English medical literature are scarce. The potentially lethal doses reported for children and adults are three beans and eight beans respectively.

Recent experience with two cases provides added insight into the expected course of
toxicity. In both cases, repeated vomiting, diarrhea, and transiently elevated serum
creatine occurred. Dehydration was much more pronounced in the second case. Both patients recovered uneventfully. Other reported manifestations of castor bean toxicity, such as hepatic necrosis, renal failure, erythrocyte hemolysis, convulsions, and shock, did not occur.

Castor seeds have been found in Egyptian tombs dating back to 4000 BC. Herodotus and other Greek travelers have noted the use of castor seed oil for lighting and body anointments.

Global castor seed production is around 1 million tons per year. Leading producing areas are India, China and Brazil. There are several active breeding programmes.

Habitat and growth
Although castor is probably indigenous to the southeastern Mediterranean region and Eastern Africa, today it is widespread throughout tropical regions. Castor establishes itself easily as an apparently “native” plant and can often be found on wasteland. It is widely
grown as a crop in, for example, Ethiopia. It is also used extensively as a decorative plant
in parks and other public areas, particularly as a “dot plant” in traditional bedding schemes.

Although monotypic, the castor oil plant can vary greatly in its growth habit and
appearance. It is a fast-growing, suckering perennial shrub which can reach the size of a
small tree (around 12 m), but it is not hardy. In areas prone to frost it is usually shorter
and grown as if it were an annual: it can reach a height of 2â€“3 m in a year (if sown early,
under glass, and kept at a temperature of around 20Â° Celsius until planted out . The glossy leaves are 15â€“45 cm long, palmate, with 5â€“12 deep lobes and toothed margins. Their colour varies from dark green, sometimes with a reddish tinge, to dark reddish purple or bronze.

The stems and the spherical, spiny seed pods also vary in pigmentation. The pods are more showy than the flowers (the male flowers are yellowish-green with prominent creamy stamens and are carried in ovoid spikes up to 15 cm long; the female flowers, borne at the tips of the spikes, have prominent red stigmas).

Selections have been made by breeders for use as ornamental plants: ‘Gibsonii’ has
red-tinged leaves with reddish veins and pinkish-green seed pods; ‘Carmencita Pink’ is
similar, with pinkish-red stems; ‘Carmencita Bright Red’ has red stems, dark purplish leaves and red seed pods; all grow to around 1.5 m tall as annuals. ‘Impala’ is compact (only 1.2 m tall) with reddish foliage and stems, brightest on the young shoots; ‘Red Spire’ is tall (2â€“3 m) with red stems and bronze foliage; ‘Zanzibarensis’ is also tall (2â€“3 m), with large, mid-green leaves (50 cm long) with white midribs. (Heights refer to plants grown as
annuals.)

Castor is used as a food plant by the larvae of some Lepidoptera species including Giant
Leopard Moth, Hypercompe hambletoni and The Nutmeg. It is a favourite food of the Tambourine Dove, Turtur tympanistria.

Uses
The use of castor seed oil in India has been documented since 2000 BC for use in lamps and in local medicine as a laxative, purgative, and cathartic in UNANI,

Ayurvedic and other ethnomedical systems.
Castor seed and its oil have also been used in China for centuries, mainly prescribed in
local medicine for internal use or use in dressingsCastor oil is a vegetable oil obtained from the castor bean (technically castor seed as the castor plant, Ricinus communis, is not a member of the bean family).

Castor oil has an unusual composition and chemistry, which makes it quite valuable. Ninety percent of fatty acids in castor oil are ricinoleic acid. Ricinoleic acid, a
monounsaturated, 18-carbon fatty acid, has a hydroxyl functional group at the twelfth
carbon, a very uncommon property for a biological fatty acid. This functional group causes
ricinoleic acid (and castor oil) to be unusually polar, and also allows chemical derivatization that is not practical with other biological oils. Since it is a polar dielectric with a relatively high dielectric constant (4.7), highly refined and dried Castor oil is sometimes used as a dielectric fluid within high performance high voltage capacitors.

Castor oil also contains 3-4% of both oleic and linoleic acids.Castor oil maintains its fluidity at both extremely high and low temperatures. Sebacic acid is chemically derived from castor oil. Castor oil and its derivatives have applications in the manufacturing of soaps, lubricants, hydraulic and brake fluids, paints, dyes, coatings, inks, cold resistant plastics, waxes and polishes, nylon, pharmaceuticals and perfumes. In internal combustion engines, castor oil is renowned for its ability to lubricate under extreme conditions and temperatures, such as in air-cooled engines.

The lubricants company Castrol takes its name from castor oil. However, castor oil tends to form gums in a short time, and its use is therefore restricted to engines that are regularly rebuilt, such as motorcycle race engines.

Castor oil is vegetable-based oil because it’s made from Castor plant seeds; thus, it naturally biodegrades quickly and comes from a renewable energy resource (plants). The castor seed contains Ricin, a toxic protein removed by cold pressing and filtering.

Medicinal use of Castor oil
Today, the United States Food and Drug Administration (FDA) recognizes Castor oil as
generally safe and effective (GRASE) for over-the-counter use as a laxative , but it is not
a preferred drug to treat constipation. Besides being a laxative, Castor oil is sometimes
used to help women start labor, but in any case with due caution and under medical
supervision. One of Castor oil’s derivatives undecylenic acid is also FDA approved for
over-the-counter use on skin disorders or skin problems. .

Pure cold pressed Castor oil is really tasteless and odorless. When additives are added to
pure cold pressed Castor oil, the oil becomes adulterated and the taste and smell can change according to the additives. Also, pure cold pressed Castor oil is potent and can be an eye irritant similar to pepper spray, so avoid contact with eyes.

Ricinoleic acid is the main component of Castor oil and it exerts anti-inflammatory effects

A study found that castor oil decreased pain more than ultrasound gel or vaseline during
extracorporeal shock wave application.

Therapeutically, modern drugs are rarely given in a pure chemical state, so most active ingredients are combined with excipients or additives.

Castor oil in the form of Cremophor EL (polyethoxylated Castor oil: a mixture of ricinoleic acid, polyglycol ester, glycerol polyglycol esters, and polyglycols) is added to many modern drugs such as: Miconazole, anti-fungal; Paclitaxel, anti-cancer ; Sandimmune (cyclosporine injection, USP) ;

Nelfinavir mesylate, HIV protease inhibitor . Saperconazole has Emulphor EL -719P (a castor oil derivative) ; Prograf has HCO-60 (polyoxyl 60 hydrogenated Castor oil); Balsam Peru - Castor oil - and Trypsin Topical contains Castor oil ; Aci-Jel (acetic acid/oxyquinoline/ricinoleic acid - vaginal); Emla (lidocaine, prilocaine and Castor oil).

Traditional or folk medicines:
Cold pressed Castor oil has been used or time-tested for centuries throughout the world for its anti-microbial and anti-bacterial properties long before any government agency was created to regulate medicines.

Medicinal Castor oil was used for skin problems, burns, sunburns, skin disorders, skin cuts, abrasions, etc.

The oil is also used as a rub or pack for various ailments, including abdominal complaints, headaches, muscle pains, inflammatory conditions, skin eruptions, lesions, and sinusitis. A
castor oil pack is made by soaking a piece of flannel in castor oil, then putting it on the
area of complaint and placing a heat source, such as a hot water bottle, on top of it.

Industrial Castor oil
Castor oil has over 1000 patented industrial applications and is used in the following
industries: automobile, aviation, cosmetics, electrical, electronics, manufacturing,
pharmaceutical, plastics, and telecommunications. The following is a brief list of Castor
oil uses in the above industries: adhesives, brake fluids, caulks, dyes, electrical liquid
dielectrics, humectants, hydraulic fluids, inks, lacquers, leather treatments, lubricating
greases, machining oils, paints, pigments, refrigeration lubricants, rubbers, sealants,
textiles, washing powders, and waxes.

Castor oil’s high lubricity (reduces friction) is superior to petroleum-based lubricants; for instance, it really clings to metal, especially hot metal, and is used in racing and jet (turbine) engines. In addition, Castor oil is non-toxic and quickly biodegrades; whereas,
petroleum-based oils are potential health hazards, and take a very long time to biodegrade, thus can damage the environment when concentrated .

Castor oil is non-drying oil (slow to oxidize); thus, it remains liquid for a long time. As
a result, it’s naturally a good lubricant, and was a fuel for lamps before alternating
current electricity (AC) was invented.

Castor oil’s value was recognized by the United States Congress in the Agricultural
Materials Act of 1984, and classified as a strategic material.

Lamp fuel
It is said to be the best lamp oil in use in India, giving an excellent white light, vying
in brilliancy with electricity, far superior to petroleum, rape seed, and all other oils,
whether vegetable, animal or mineral.

In Bangladesh, some villagers use castor oil instead of kerosene to fuel lamps.

Help taken from:Â en.wikipedia.org