Incense is an aromatic biotic material that releases fragrant smoke when burnt. The term is used for either the material or the aroma. Incense is used for aesthetic reasons, religious worship, aromatherapy, meditation, and ceremonial reasons. It may also be used as a simple deodorant or insect repellent.
Incense is composed of aromatic plant materials, often combined with . The forms taken by incense differ with the underlying culture, and have changed with advances in technology and increasing number of uses.
Incense can generally be separated into two main types: "indirect-burning" and "direct-burning." Indirect-burning incense (or "non-combustible incense") is not capable of burning on its own, and requires a separate heat source. Direct-burning incense (or "combustible incense") is lit directly by a flame and then fanned or blown out, leaving a glowing ember that smoulders and releases a smoky fragrance. Direct-burning incense is either a paste formed around a bamboo stick, or a paste that is extruded into a stick or cone shape.
In Ancient Egypt, combustible bouquets were used and employed incense in both pragmatic and mystical capacities. Incense was burnt to counteract or obscure malodorous products of human habitation, but was widely perceived to also deter malevolent demons and appease the gods with its pleasant aroma. Resin balls were found in many prehistoric Egyptian tombs in El Mahasna, giving evidence for the prominence of incense and related compounds in Egyptian antiquity. One of the oldest extant incense burners originates from the 5th dynasty. The Temple of Deir-el-Bahari in Egypt contains a series of carvings that depict an expedition for incense.
The Babylonians used incense while offering prayers to divine . Incense spread from there to Greece and Rome. Incense burners have been found in the Indus Civilization. Evidence suggests oils were used mainly for their aroma. This was the first usage of subterranean plant parts in incense.
At around 2000 BCE, Ancient China began the use of incense in the religious sense, namely for worship.Herrera, Matthew D. (2012). Holy Smoke: The Use of Incense in the Catholic Church (2nd ed.). San Luis Obispo: Tixlini Scriptorium. Page 1. Incense was used by Chinese cultures from Neolithic times and became more widespread in the Xia dynasty, Shang dynasty, and Zhou dynasty dynasties. The ancient Chinese employed incense composed of herbs and plant products (such as cassia, cinnamon, styrax, and sandalwood) as a component of numerous formalized ceremonial rites.
In India, the oldest sources on incense is the Vedic-tribal oral religious scriptures called Vedas, specifically the Atharvaveda and the Rigveda. Incense-burning was used to create pleasing aromas as well as a medicinal tool. Its use in medicine is considered the first phase of Ayurveda, which uses incense as an approach to healing. The practice of incense as a healing tool was assimilated into the religious practices of the time. Some incense, depending on the contents, may also act as organic insect repellent.
Incense usage reached its peak during the Song dynasty, with numerous buildings erected specifically for incense ceremonies. Brought to Japan in the 6th century by Korean Bhikkhu, who used the mystical aromas in their purification rites, the delicate scents of Koh (high-quality Japanese incense) became a source of amusement and entertainment for nobles in the Imperial Court during the Heian period 200 years later. During the 14th-century Ashikaga shogunate, a samurai warrior might perfume his helmet and armor with incense to achieve an aura of invincibility (as well as to make a noble gesture to whoever might take his head in battle). It was not until the Muromachi period during the 15th and 16th century that incense appreciation (kōdō, ) spread to the upper and middle classes of Japanese society.
Local knowledge and tools were extremely influential on the style, but methods were also influenced by migrations of foreigners, such as clergy and physicians.
Typical compositions burn at a temperature between .
Moxa tablets, which are disks of powdered mugwort used in Traditional Chinese medicine for moxibustion, are not incenses; the treatment is by heat rather than fragrance.
Incense sticks may be termed joss sticks, especially in parts of East Asia, South Asia and Southeast Asia. Among ethnic Chinese and Chinese-influenced communities these are traditionally burned at temples, before the threshold of a home or business, before an image of a religious divinity or local spirit, or in shrines, large and small, found at the main entrance of every village. Here the earth god is propitiated in the hope of bringing wealth and health to the village. They can also be burned in front of a door or open window as an offering to tian, or the devas. The word "joss" is derived from the Latin deus (god) via the Portuguese deus through the Javanese dejos, through Chinese pidgin English.
Certain proportions are necessary for direct-burning incense:
"Dipped" or "hand-dipped" direct-burning incense is created by dipping "incense blanks" made of unscented combustible dust into any suitable kind of essential or fragrance oil. These are often sold in the United States by flea markets and sidewalk vendors who have developed their own styles. This form of incense requires the least skill and equipment to manufacture, since the blanks are pre-formed in China or South East Asia.
Incense mixtures can be extruded or pressed into shapes. Small quantities of water are combined with the fragrance and incense base mixture and kneaded into a hard dough. The incense dough is then pressed into shaped forms to create cone and smaller coiled incense, or forced through a hydraulic press for solid stick incense. The formed incense is then trimmed and slowly dried. Incense produced in this fashion has a tendency to warp or become misshapen when improperly dried, and as such must be placed in climate-controlled rooms and rotated several times through the drying process.
Traditionally, the bamboo core of cored stick incense is prepared by hand from Phyllostachys heterocycla cv. pubescens since this species produces thick wood and easily burns to ashes in the incense stick. In a process known as "splitting the foot of the incense stick", the bamboo is trimmed to length, soaked, peeled, and split in halves until the thin sticks of bamboo have square cross sections of less than 3mm. This process has been largely replaced by machines in modern incense production.
In the case of cored incensed sticks, several methods are employed to coat the sticks cores with incense mixture:
In Japan and China, a similar censer called a egōro in Japanese, or a shǒulú (手爐) in Chinese, is used by several Buddhist traditions. The egōro/ shǒulú is usually made of brass, with a long handle and no chain. Instead of charcoal, makkō powder is poured into a depression made in a bed of ash. The makkō is lit and the incense mixture is burned on top. This method in Japan is known as sonae-kō (religious burning). For direct-burning incense, the tip or end of the incense is ignited with a heat source such as a flame until the incense begins to turn into ash at the burning end. The flame is then fanned or blown out, leaving the incense to smolder.
Along with the introduction of Buddhism in China came calibrated incense sticks and . The first known record is by poet Yu Jianwu (487–551): "By burning incense we know the o'clock of the night, With graduated candles we confirm the tally of the watches."Schafer, Edward H. (1963). The Golden Peaches of Samarkand, a Study of T'ang Exotics. University of California Press. p. 155. The use of these incense timekeeping devices spread from Buddhist monasteries into Chinese secular society.
Incense-stick burning is an everyday practice in traditional Chinese religion. There are many different types of sticks used for different purposes or on different festive days. Many of them are long and thin. Sticks are mostly coloured yellow, red, or more rarely, black. Thick sticks are used for special ceremonies, such as funerals. Spiral incense, with exceedingly long burn times, is often hung from temple ceilings. In some states, such as Taiwan, Singapore, or Malaysia, where they celebrate the Ghost Festival, large, pillar-like dragon incense sticks are sometimes used. These generate so much smoke and heat that they are only burned outside.
Chinese incense sticks used in popular religion are generally odorless or only use the slightest trace of jasmine or rose, since it is the smoke, not the scent, which is important in conveying the prayers of the faithful to heaven. They are composed of the dried powdered bark of a non-scented species of cinnamon native to Cambodia, Cinnamomum cambodianum. Inexpensive packs of 300 are often found for sale in Chinese supermarkets. Though they contain no sandalwood, they often include the Chinese character for sandalwood on the label, as a generic term for incense.
Highly scented Chinese incense sticks are used by some Buddhists. These are often quite expensive due to the use of large amounts of sandalwood, agarwood, or floral scents. The sandalwood used in Chinese incenses does not come from India, its native home, but rather from groves planted within Chinese territory. Sites belonging to Tzu Chi, Chung Tai Shan, Dharma Drum Mountain, Xingtian Temple, or City of Ten Thousand Buddhas do not use incense.
The basic ingredients are the bamboo stick, the paste (generally made of charcoal dust and joss/jiggit/gum/tabu powder – an adhesive made from the bark of litsea glutinosa and other trees), and the perfume ingredients - which would be a masala (spice mix) powder of ground ingredients into which the stick would be rolled, or a perfume liquid sometimes consisting of synthetic ingredients into which the stick would be dipped. Perfume is sometimes sprayed on the coated sticks. Stick machines are sometimes used, which coat the stick with paste and perfume, though the bulk of production is done by hand rolling at home. There are about 5,000 incense companies in India that take raw unperfumed sticks hand-rolled by approximately 200,000 women working part-time at home, and then apply their own brand of perfume, and package the sticks for sale. An experienced home-worker can produce 4,000 raw sticks a day. There are about 50 large companies that together account for up to 30% of the market, and around 500 of the companies, including a significant number of the main ones, including Moksh Agarbatti, PremaNature, and Cycle Pure, are based in Mysore.
jinkō and byakudan are the two most important ingredients in Japanese incense. The characters in agarwood mean "incense that sinks in water" due to the weight of the resin in the wood. Sandalwood is used in the Japanese tea ceremony. The most valued sandalwood comes from Mysore in the state of Karnataka in India.
Japanese incense companies divide agarwood into six categories depending on its properties and the region from which it is obtained. Kyara, a type of agarwood, is currently worth more than its weight in gold.
A similar utilitarian use of incense can be found in the post-Reformation Church of England. Although the ceremonial use of incense was abandoned until the Oxford Movement, it was common to have incense (typically frankincense) burned before grand occasions, when the church would be crowded. The frankincense was carried by a member of the vestry before the service in a vessel called a 'perfuming pan'. In iconography of the day, this vessel is shown to be elongated and flat, with a single long handle on one side. The perfuming pan was used instead of the thurible, as the latter would have likely offended the Protestant sensibilities of the 17th and 18th centuries.
Incense is also often used by people who smoke indoors and do not want the smell to linger.
Papier d'Arménie was originally sold as a disinfectant as well as for the fragrance.
Incense clocks are used to time social, medical and religious practices in parts of eastern Asia. They are primarily used in Buddhism as a timer of meditation and prayer. Different types of incense burn at different rates; therefore, different incense are used for different practices. The duration of burning ranges from minutes to months.
Research carried out in Taiwan in 2001 linked the burning of incense sticks to the slow accumulation of potential in a poorly ventilated environment by measuring the levels of polycyclic aromatic hydrocarbons (including benzopyrene) within Buddhist temples. The study found gaseous aliphatic , which are carcinogenic and mutagenic, in incense smoke. A survey of risk factors for lung cancer, also conducted in Taiwan, noted an inverse association between incense burning and adenocarcinoma of the lung, though the finding was not deemed significant.
In contrast, epidemiologists at the Hong Kong Anti-Cancer Society, Aichi Cancer Center in Nagoya, and several other centers found: "No association was found between exposure to incense burning and respiratory symptoms like chronic cough, chronic sputum, chronic bronchitis, runny nose, wheezing, asthma, allergic rhinitis, or pneumonia among the three populations studied: i.e. primary school children, their non-smoking mothers, or a group of older non-smoking female controls. Incense burning did not affect lung cancer risk among non-smokers, but it significantly reduced risk among smokers, even after adjusting for lifetime smoking amount." However, the researchers qualified their findings by noting that incense burning in the studied population was associated with certain low-cancer-risk dietary habits, and concluded that "diet can be a significant confounder of epidemiological studies on air pollution and respiratory health."
Although several studies have not shown a link between incense and lung cancer, other types of cancer have been directly linked to burning incense. A study published in 2008 in the medical journal Cancer found that incense use is associated with a statistically significant higher risk of cancers of the upper respiratory tract, with the exception of nasopharyngeal cancer. Those who used incense heavily also were 80% more likely to develop squamous-cell carcinomas. The link between incense use and increased cancer risk held when the researchers weighed other factors, including cigarette smoking, diet and drinking habits. The research team noted that "This association is consistent with a large number of studies identifying carcinogens in incense smoke, and given the widespread and sometimes involuntary exposure to smoke from burning incense, these findings carry significant public health implications."
In 2015, the South China University of Technology found toxicity of incense to Chinese hamsters' ovarian cells to be even higher than cigarettes. Incensole acetate, a component of frankincense, has been shown to have anxiolytic-like and antidepressive-like effects in mice, mediated by activation of poorly-understood TRPV3 ion channels in the brain.
Composition
Combustible base
Types
Indirect-burning
Direct-burning
Production
Orthodox Christian
Burning incense
Cultural variations
Arabian
Chinese
Christian
Indian
Jewish Temple in Jerusalem
Japanese
Usage
Practical
Odorizant
Time-keeper
Insect repellent
Aesthetic
Religious
Aphrodisiac
Health risks from incense smoke
See also
Further reading
External links
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