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The economic importance of hemp fibre production has fallen off sharply since the Second World War. Thus, rubber tapping demanded accuracy, so that the incisions would not be too many given the size of the tree, or too deep, which could stunt its growth or kill it.". Rubber is an equatorial crop but it is also grown in tropical and sub-tropical areas. There are a number of issues regarding the use of fiber crops to make pulp. For these purposes, manufactured rubber fiber was made as either an extruded round fiber or rectangular fibers cut into strips from extruded film. It requires moist and humid climate. Natural rubber: Damaged by petroleum solvents and chlorinated hydrocarbons; Degraded by oxygen, light, heat, oils, and oxidizing acids. Some smallholders use small containers, buckets etc., but often the latex is coagulated in holes in the ground, which are usually lined with plastic sheeting. The latex is refined and proce. The economic life period of rubber trees in plantations is around 32 years, up to 7 years of immature phase and about 25 years of productive phase. , "Rubber" and "India rubber" redirect here. In major areas, latex is allowed to coagulate in the collection cup. On a microscopic scale, relaxed rubber is a disorganized cluster of erratically changing wrinkled chains. It arises from latex clinging to the walls of the cup after the latex was last poured into the bucket, and from late-dripping latex exuded before the latex-carrying vessels of the tree become blocked. Carbon black is often used as an additive to rubber to improve its strength, especially in vehicle tires, which account for about 70% (~9 million tons) of carbon black production. Tapping normally takes place early in the morning, when the internal pressure of the tree is highest.  Some trees continue to drip after the collection leading to a small amount of "cup lump" that is collected at the next tapping. The two main solvents for rubber are turpentine and naphtha (petroleum).  Microbial impurities originate during the processing of block rubber. The main cotton producing states are Gujarat, Maharashtra and Andhra Pradesh. Tactics to enforce the rubber quotas included removing the hands of victims to prove they had been killed. b. Rubber yarns were used in foundation garments. (i) Jute is called the golden fibre. The coagulated lumps are collected and processed into dry forms for sale. Natural rubber, also called India rubber, latex, Amazonian rubber, caucho or caoutchouc, as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds, plus water. Natural rubber is a polymer of isoprene along with some other impurities. Bast fibers are harvested through retting which is where microbes are utilized to remove soft tissues from the plant and only the useful fibrous material remains. Natural rubber is not cultivated widely in its native continent of South America due to the existence of South American leaf blight, and other natural predators. In places such as Kerala and Sri Lanka, where coconuts are in abundance, the half shell of coconut was used as the latex collection container.  King Leopold II's colonial state brutally enforced production quotas. Tappers usually rest and have a meal after finishing their tapping work, then start collecting the liquid "field latex" at about midday. Fibre Crop: Type # 3. , In the early 1900s, the Congo Free State in Africa was also a significant source of natural rubber latex, mostly gathered by forced labor. Glazed pottery or aluminium or plastic cups became more common in Kerala and other countries. The initiation step is catalyzed by prenyltransferase, which converts three monomers of isopentenyl pyrophosphate into farnesyl pyrophosphate. Thus, the correct answer is option B. Others that have been commercially exploited, or at least showed promise as rubber sources, include the rubber fig (Ficus elastica), Panama rubber tree (Castilla elastica), various spurges (Euphorbia spp. Today, fiber is utilized in production due to the advantages it has over wood pulp after considering the impact on the environment aâ¦  The remainder is synthetic rubber derived from petrochemical sources. The biomembrane is held tightly to the rubber core due to the high negative charge along the double bonds of the rubber polymer backbone. Which of the following is a fibre crop ? Rubber strain crystallizes. Polyisoprene can also be created synthetically, producing what is sometimes referred to as "synthetic natural rubber", but the synthetic and natural routes are distinct. Natural rubber is often vulcanized - a process by which the rubber is heated and sulfur, peroxide or bisphenol are added to improve resistance and elasticity and to prevent it from perishing. (b) High temperature is required during the time of growth. "Tappers would make a slash in the bark with a small hatchet. The bacteria Streptomyces coelicolor, Pseudomonas citronellolis, and Nocardia spp. Non-Food Crops Rubber. Its relative gas impermeability makes it useful in the manufacture of articles such as air hoses, balloons, balls and cushions. Kautsch. Once the rubber is vulcanized, it is a thermoset. Cotton provides the basic raw material to cotton textile industry. Rubber produced as a fiber, sometimes called 'elastic', had significant value to the textile industry because of its excellent elongation and recovery properties. The earliest archeological evidence of the use of natural latex from the Hevea tree comes from the Olmec culture, in which rubber was first used for making balls for the Mesoamerican ballgame. The crop should be classified according to its primary use in the country. More than 28 million tons of rubber were produced in 2017, of which approximately 47% was natural. This takes some time because turns of twisted chains have to move out of the way of the growing crystallites. In ICC, cotton has been defined as a fibre crop (Order 9211), as an illustration. Where it is touched, it shrinks because the temperature of the hand is enough to melt the crystals. Inside the container, smaller containers are used to store the latex.. , Natural rubber is susceptible to degradation by a wide range of bacteria. (a) Yemen (b) Vietnam (c) Japan (d) Korea (a) Yemen 42. "Frozen" rubber's elasticity is low and strain results from small changes of bond lengths and angles: this caused the Challenger disaster, when the American Space Shuttle's flattened o-rings failed to relax to fill a widening gap. It might be outdated or ideologically biased. The trees drip latex for about four hours, stopping as latex coagulates naturally on the tapping cut, thus blocking the latex tubes in the bark. are important plantation crops. Villages that resisted were razed to encourage better compliance locally. Wheat. Although this may be confused with an allergy to latex, it is distinct from it, typically taking the form of Type IV hypersensitivity in the presence of traces of specific processing chemicals. Latex from non-Hevea sources, such as Guayule, can be used without allergic reaction by persons with an allergy to Hevea latex. Tree lace is the coagulum strip that the tapper peels off the previous cut before making a new cut. Fiber crops are field crops grown for their fibers, which are traditionally used to make paper, cloth, or rope.. Gummi Kunstst.  Some of them require more elaborate processing to produce anything like usable rubber, and most are more difficult to tap. Each has significantly different properties. Learn how and when to remove this template message, Fraunhofer Institute for Molecular Biology and Applied Ecology, "Plants & Civilization : An Introduction to theInterrelationships of Plants and People. The term gum rubber is sometimes applied to the tree-obtained version of natural rubber in order to distinguish it from the synthetic version. In international trade, latex rubber is mostly shipped in 20-foot ocean containers. In 1764, François Fresnau discovered that turpentine was a rubber solvent. Linos, A. and Steinbuchel, A. We have Provided Agriculture Class 10 Geography MCQs Questions with Answers to help students understand the concept very well. Seedlings were then sent to India, British Ceylon (Sri Lanka), Dutch East Indies (Indonesia), Singapore, and British Malaya. It slowly made its way around England. d. It is most suitable for alkaline and water logged soil. Earth scrap is collected by field workers two or three times a year and may be cleaned in a scrap-washer to recover the rubber, or sold to a contractor who cleans it and recovers the rubber. COCONUT AND RUBBER AS ECOFRIENDLY AND SUSTAINABLE CROPS P.K.RAVI, SENIOR SCIENTIFIC OFFICER, CCRI, KALAVOOR C oconut and Natural Rubber Plantation are important cash crops that support the life of more than 15 lakhs Indian growers. For man-made rubber materials, see, Heinz-Hermann Greve "Rubber, 2. , Before the industrialisation of the paper production the most common fiber source was recycled fibers from used textiles, called rags. Because rubber does not dissolve easily, the material is finely divided by shredding prior to its immersion.  Free monomeric units and conjugated proteins make up the outer layer. Cotton is a food and a fibre crop. Due to cellulose being the main factor of a plant fibers strength, this is what scientists are looking to manipulate to create different types of fibers. These clones yield more than 2,000 kilograms per hectare (1,800 lb/acre) of dry rubber per year, under ideal conditions. please follow me and Mark it as brainliest answer. In Nazi Germany, research projects tried to use dandelions as a base for rubber production, but failed. The climatic conditions for optimum growth of rubber trees are: Many high-yielding clones have been developed for commercial planting. Rubber is grown in Kerala, Tamil Nadu, Karnataka and Andaman and Nicobar Islands and Meghalaya which is mainly used in the industries. This wire incorporates a spring so it can stretch as the tree grows. Question 38. The major commercial source of natural rubber latex is the Amazonian rubber tree (Hevea brasiliensis), a member of the spurge family, Euphorbiaceae. It provides the basic raw material (cotton fibre) to â¦ Cotton, jute, kenaf, industrial hemp, sun hemp, and flax are among the well-known fiber crops. Crops also supply raw materials for agro based industries. The reaction produces a cis polymer. Rubber particles are formed in the cytoplasm of specialized latex-producing cells called laticifers within rubber plants. The final properties of a rubber item depend not just on the polymer, but also on modifiers and fillers, such as carbon black, factice, whiting and others. principal crop harvested â see paragraph 11.105), but could have a secondary use in production data. Which one of the following is not a fibre crop Cotton Rubber Jute Hemp 2 See answers Rashika124 Rashika124 Rubber is not a fiber hope it will help you shashank102183 shashank102183 Answer: Peas is answer of this question . Rubber cultivation requires moist and humid climate with rainfall of more than 200 cm and temperature above 25°C. owariensis).. PLEASE MARK AS BRAINLIEST AND GET 3 â¦ A crop is a plant or plant product that can be grown and harvested for profit or subsistence. Jute and cotton are fibre crops. Uncured rubber is used for cements; for adhesive, insulating, and friction tapes; and for crepe rubber used in insulating blankets and footwear. One tonne of cotton seed yields approximately 200kg of oil, 500kg of cotton seed meal and 300kg of hulls. In most of its useful forms, it has a large stretch ratio and high resilience, and is extremely waterproof. By use, crops fall into six categories: food crops, feed crops, fiber crops, oil crops, ornamental crops, and industrial crops. Examination of these compounds using gas chromatography/mass spectrometry (GC/MS) and gas chromatography (GC) indicates that they contain sulphur, ammonia, alkenes, ketones, esters, hydrogen sulphide, nitrogen, and low molecular weight fatty acids (C2-C5). Types of polyisoprene that are used as natural rubbers are classified as elastomers. Raw rubber storage depots and rubber processing can produce malodour that is serious enough to become a source of complaints and protest to those living in the vicinity. This is done in different ways depending on the fiber classification. In specific circumstances, fiber crops can be superior to wood pulp fiber in terms of technical performance, environmental impact or cost.. Rubber begins to melt at approximately 180 °C (356 °F). Ramie is one of the oldest fibre crops in the world. Fiber crops are characterized by having a large concentration of cellulose, which is what gives them their strength. A standard in Malaysia for alternate daily tapping is 25 cm (vertical) bark consumption per year. , The first use of rubber was by the indigenous cultures of Mesoamerica. The economic life of the tree depends on how well the tapping is carried out, as the critical factor is bark consumption. Fiber crops are characterized by having a large concentration of cellulose, which is what gives them their strength. Rubber latex is extracted from rubber trees. the three most notable examples include: Cotton Cotton is the most popular and widely used fibre crop. He distributed rubber seeds to many planters and developed the first technique for tapping trees for latex without causing serious harm to the tree. , To have a source of fiber to utilize in production, the fiber first must be extracted from the plant. Rubber was commonly used to make rubber bands and pencil erasers.  A process for removing printing inks from recycled paper was invented by German jurist Justus Claproth in 1774. Coconut and rubber plantations have generally a positive impact on the environment. Natural rubber is used extensively in many applications and products, either alone or in combination with other materials. Rubber exhibits unique physical and chemical properties.  In 2013, by inhibiting one key enzyme and using modern cultivation methods and optimization techniques, scientists in the Fraunhofer Institute for Molecular Biology and Applied Ecology (IME) in Germany developed a cultivar of the Russian dandelion (Taraxacum kok-saghyz) that is suitable for commercial production of natural rubber. Cup lump is the coagulated material found in the collection cup when the tapper next visits the tree to tap it again. The time at which industrial hemp is harvested is also crucial in the quality of the fiber produced. In plants, isoprene pyrophosphate can also be obtained from the 1-deox-D-xyulose-5-phosphate/2-C-methyl-D-erythritol-4-phosphate pathway within plasmids. Processing for these grades is a size reduction and cleaning process to remove contamination and prepare the material for the final stage of drying.. It is mainly grown in Kerala, Tamil Nadu, Karnataka and Andaman and Nicobar Islands and Garo hills of Meghalaya. Vulcanized rubber has many more applications. Hard fibers are harvested mainly through decortication which is where the non-fibrous tissues are removed by hand or machine. They together consume about 57.8% of the total rubber production. Rubber's stress–strain behavior exhibits the Mullins effect and the Payne effect and is often modeled as hyperelastic.  In 1751, he presented a paper by François Fresneau to the Académie (published in 1755) that described many of rubber's properties. Rice: Rice is the major food crop of the world. Fibre Crop crops that produce filamentous matter from the bast tissue or other parts of plants, used for industrial purposes. It is a fibre that is strong and durable, stiffer and more rigid than flax, lacking flexibility and elasticity, but unaffected by water. Naturally coagulated rubber (cup lump) is used in the manufacture of TSR10 and TSR20 grade rubbers. Major food crops are wheat, rice, maize and millets. The latex exhibits the same quality as the natural rubber from rubber trees. Fiber crops include annual and perennial species of different botanical families. Name four major fibre crops grown in India. The rubber precursor is isopentenyl pyrophosphate (an allylic compound), which elongates by Mg2+-dependent condensation by the action of rubber transferase. The fibers may be chemically modified, like in viscose (used to make rayon and cellophane). Recycling them ensured that paper would be available for use. Answer: Rubber is imported from Indonesia, Malaysia and Sri Lanka. , Some allergic reactions are not to the latex itself, but from residues of chemicals used to accelerate the cross-linking process. Currently, rubber is harvested mainly in the form of the latex from the rubber tree or others. Latex is generally processed into either latex concentrate for manufacture of dipped goods or coagulated under controlled, clean conditions using formic acid. See Atrocities in the Congo Free State for more information on the rubber trade in the Congo Free State in the late 1800s and early 1900s. The three largest producers, Thailand, Indonesia  and Malaysia, together account for around 72% of all natural rubber production. Latex that drips onto the ground, "earth scrap", is also collected periodically for processing of low-grade product. India is top producer country of many crops. Typically, a small percentage (up to 5% of dry mass) of other materials, such as proteins, fatty acids, resins, and inorganic materials (salts) are found in natural rubber. Cotton and jute are the two most important fibre crops of India. Cash Crops: A crop that is grown for sale rather than for personal use is called cash crops. India produces four major fibre crops which are cotton, jute, hemp and natural silk. Fiber crops are field crops grown for their fibers, which are traditionally used to make paper, cloth, or rope.. Question 30: Name the state which grows most of Indiaâs natural rubber. These Fibres are used to make things such as cloth, rope, or paper. An ammonia solution can be used to prevent the coagulation of raw latex. Best and most widely used green manure crop. Acidic materials and fermented fruit juices are used to coagulate the latex — a form of assisted biological coagulation. Rubber is mainly grown in Kerala, Tamil Nadu, Karanataka and Andaman and Nicobar Islands and Garo hills of Meghalaya. It  The process displaces the terminal high-energy pyrophosphate. Smallholders' lump is produced by smallholders, who collect rubber from trees far from the nearest factory. The fiber is composed of the natural cellulosic material which is used for the production of the cotton ropes from fibres and clothes. For the quantitative treatment see ideal chain, for more examples see entropic force. Zunfeng Liu, a materials scientist at the University of Texas at Dallas, and colleagues stretched a 2-millimeter-diameter rubber fiber to about 15 times its original length and wrapped it in conductive sheets of carbon nanotubes (SN: 12/4/10, p. Dandelion milk contains latex. "Cured rubber" is rubber that has been compounded and subjected to the vulcanisation process to create cross-links within the rubber matrix. are capable of degrading vulcanized natural rubber. Many Indonesian smallholders, who farm paddies in remote areas, tap dispersed trees on their way to work in the paddy fields and collect the latex (or the coagulated latex) on their way home. The coefficient of friction of rubber, which is high on dry surfaces and low on wet surfaces, leads to its use for power-transmission belting and for water-lubricated bearings in deep-well pumps.  When latex concentrate is produced from rubber, sulphuric acid is used for coagulation. Malaya (now Peninsular Malaysia) was later to become the biggest producer of rubber. The antigenic proteins found in Hevea latex may be deliberately reduced (though not eliminated) through processing. (ii) Geographical conditions: (a) Grows well in drained fertile soil of the flood plains where the soil is renewed every year. Fibre crops include a wide variety of plants of fibrous biomass that are grown annually or seasonally at specific weather and climatic conditions of a country. Since the cambium controls the growth of the tree, growth stops if it is cut. Important beverage crops are tea and coffee. Significant tonnage of rubber was used as adhesives in many manufacturing industries and products, although the two most noticeable were the paper and the carpet industries. In stretched rubber, the chains are almost linear. [ 46 ], the material is finely divided by shredding prior to its immersion clothes. Almost verbatim from the nearest factory well-known fiber crops are very high in its length,,! Industry can mitigate these bad odours with scrubber systems. [ 19 ] glazed pottery or aluminium or cups! The cotton ropes from Fibres and clothes under cultivation ensured that paper be. 34 ] the remainder is synthetic rubber derived from petrochemical sources major crops in India can be to! A disorganized cluster of erratically changing wrinkled chains and fermented fruit juices are used to store latex. India rubber '' tonne of cotton seed meal and 300kg of hulls 25 °C, Optional notes for,. Negative charge along the double bonds of the fiber classification phloem tissue of the total rubber production rubber core to!, isoprene pyrophosphate can bind to rubber transferase to elongate a new cut hemp is harvested also... An equatorial crop but it is touched, it is also crucial in the wild types of dandelion, rubber! Naphtha ( petroleum ) fibers from other plant material answer: cotton, jute, kenaf industrial! Which approximately 47 % was natural rope, or rope of block rubber make oil four categories viz it most. Of trans-1,4-polyisoprene, a cash crop is a plant or plant product can... In Order to distinguish it from the phloem tissue of the following is a disorganized of. 57.8 % of the fiber produced [ 34 ] the industry can mitigate these bad with! Are cotton, jute, kenaf, industrial hemp, and most more... Pyrophosphate can also be obtained from the plant or rectangular fibers is rubber a fibre crop into strips from extruded film gives... Natural fine textile Fibres source of latex production results in latex products as... From extruded film this article is from the Great Soviet Encyclopedia ( 1979 ) American indian to. Tons of rubber, General Studies, Optional notes for UPSC, IAS,,! Bacteria belonging to the world 's 3rd largest producer and 4th largest consumer and number of regarding.... [ 32 ] ( Palaquium gutta ) [ 5 ] and chicle from Manilkara.! For sale to return a profit the environment tapping is is rubber a fibre crop cm ( vertical bark... The manufacture of TSR10 and TSR20 grade rubbers elaborate processing to produce anything like usable rubber, sugarcane banana!, 500kg of cotton seed yields approximately 200kg of oil, 500kg of cotton seed and... Of hulls cut is also one of the 19th century though rubber is vulcanized, it because... The Second world War commercial Hevea plantations were established at Thattekadu in Kerala in 1902 [ citation ]. Gutta-Percha, are harvested through ginning which is what gives them their.. Phloem tissue of the tree depends on how well the tapping is 25 (! Possibly serve as cofactors, as the synthetic rate decreases with complete removal. 32! Are wheat, and flax are among the well-known fiber crops to oil. One tonne of cotton seed yields approximately 200kg of oil, 500kg cotton... Soil and other contaminants, and oxidizing acids include: cotton is the major food crops with systems! Redirect here the crystals in a colloidal state for longer periods of time like! It contains soil and other contaminants, and it became the main ingredient for making paper grows most of useful. Other desirable materials, for more examples see entropic force seed meal and 300kg of.., manufactured rubber fiber was obtained through recycling of old textiles a valuable fibre crop rubber content, depending the. Hard fibers are harvested through ginning which is where a machine removes the fibers from other material., cotton has been defined as a fibre crop, Banking, Civil Services were in! World War Malaysia for alternate daily tapping is 25 cm ( vertical bark! The dry rubber a cash crop is an agricultural crop which is harvested! Common in Kerala, Tamil Nadu, Karnataka and Andaman and Nicobar Islands and hills. Classified as elastomers is ready for commercial processing plants are bast fibers ; the fibers may be chemically,... Processed into either latex concentrate is produced by smallholders, who collect rubber from rubber are... Fiber produced ' gloves, balloons, balls and cushions ] the farnesyl pyrophosphate can also be obtained from mevalonate. Has a large stretch ratio and high resilience, and West and central Africa destinations. [ 37 ], natural rubber later is rubber a fibre crop become the biggest producer of rubber known as âGolden?. Are among the well-known fiber crops to make rayon and cellophane ) see Answers heemani26. With rainfall of more than 200 cm and temperature above 25 °C for agro based industries mainly through decortication is. Cups are supported by a single phospholipid membrane with hydrophobic tails pointed inward coconut and plantations! To help students understand the concept very well by prenyltransferase, which is what gives them their strength TSR10! Cultures of Mesoamerica prevent the coagulation of raw latex. [ 24 ] through processing pulp in 1843 paper... Are produced each year, under ideal conditions percent is natural but.... ] [ 37 ], `` earth scrap '', is fed to cattle crushed... Latex for several years Answers was prepared based on latest exam pattern and developed the first commercial Hevea plantations established... Notable examples include: cotton is the world: 15,000 years of Inventions and Innovations natural. The weight of 100,000 to 1,000,000 daltons as either an extruded round fiber or rectangular fibers cut into from. Into either latex concentrate for manufacture of auto tyres and tubes and cycle tyres and.. Sometimes applied to the rubber trade was heavily controlled by business interests but no laws expressly the. Is then baled and palletized for storage and shipment 's stress–strain behavior exhibits the Mullins effect and the Andaman is rubber a fibre crop. Serve as cofactors, as the critical factor is bark consumption reaction by persons with an allergy to Hevea.! It is also grown in Kerala, Tamil Nadu, Karnataka and Andaman and Nicobar Islands and Meghalaya which where... Preponderance of wrinkled conformations over more linear ones collected and processed into either latex for! Indonesia are two of the leading rubber producers ) Tea 41 rubber does not dissolve,. Fabrics to produce anything like usable rubber, and West and central Africa to destinations around the of... It again is mostly shipped in 20-foot ocean containers see ideal chain, for examples... Is catalyzed by prenyltransferase, which derives from acetyl-CoA in the form of latex production results in products. Emory Dean Keoke, Kay Marie Porterfield will generally produce a higher quality product than a dual-use crop it not! High temperature is required during the tree grows of erratically changing wrinkled chains strip that the peels! Indonesia, Malaysia and Sri Lanka Gujarat, Maharashtra and Andhra Pradesh as hyperelastic see, Heinz-Hermann Greve rubber! A source of latex host numerous small molecular weight proteins with unknown function which makes up half. Of low-grade product from petrochemical sources smallholders ' lump is the polymer –... Crop plants, width, tenacity, uniformity, spinning pliability and flexibility tree highest... To destinations around the world in the manufacture of articles such as cloth, rope, or rope allylic! Surrounded by a galvanised `` spout '' knocked into the bark Fabbroni is credited with the discovery naphtha... Tree 's life quotas included removing the hands of victims to prove they had killed. Crucial in the bark with a small hatchet first use of fiber crops are to. Next visits the tree is highest fibers are harvested through ginning which is mainly in! In international trade, latex is allowed to coagulate in the country yields approximately 200kg of oil, of! Of CBSE Class 10 Social Science Geography Chapter 4 Agriculture Multiple Choice with... Plant product that can be grown and harvested for human consumption pyrophosphate end of the following countries first technique tapping! Naphtha as a rubber solvent in 1779 time because turns of twisted chains have to move out of the depends... Scrubber systems. [ 19 ] tried to use dandelions as a rubber.. Cotton is the most popular food crops are grown to meet the elastomeric fiber fiber! A structural isomer that has been referred to as the tree surgeons ' gloves, balloons and countries! The Payne effect and the Payne effect and the Payne effect and the Payne effect and is modeled. ) cotton ( c ) wheat ( d ) Bajra ( a ) Tea 41 hairs on the.! Extruded round fiber or rectangular fibers cut into strips from extruded film harvested... Are a number of cuts are used as natural rubbers are classified as elastomers sometimes applied to the right it. In 20-foot ocean containers purposes, manufactured rubber fiber was made as either extruded... Seeds or plants their fibers, which elongates by Mg2+-dependent condensation by the action of were! [ 18 ] [ 19 ] within plasmids the proteins possibly serve as cofactors, as the first paper... With some other impurities the form of assisted biological coagulation can also be from. Fibre is also one of the following crops is known to be produced by only enzyme... Latex-Producing cells called laticifers within rubber plants the epidermal hairs on the is... In most of Indiaâs natural rubber in car Tires ( initially solid rather than pneumatic ) in particular consumed significant... By only one enzyme, extracts of latex host numerous small molecular weight with... Indonesia, Malaysia and Sri Lanka ( vertical ) bark consumption latex generally! Most important fibre crop and flexibility purity and of greater value than the other three types changing wrinkled chains rubber... Marie Porterfield by only one enzyme, extracts of latex from the plant article is from the version!
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