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|Section2= |Section6= |Section7= }} Guar gum, also called guaran, is a galactomannan. It is primarily the ground endosperm of guar beans. The guar seeds are dehusked, milled and screened to obtain the guar gum. It is typically produced as a free-flowing, off-white powder. ==Production and trade== The guar bean is principally grown in India, Pakistan, US, Australia and Africa. India produces 2.5 - 3.5 million tons of guar annually, making it the largest producer with about 80% of world production. In India, Rajasthan, Gujarat and Haryana are the main producing regions, and Jodhpur, Sri Ganganagar and Hanumangarh in Rajasthan are the major Guar trading markets. The best quality guar beans are sometimes known as "Fast-Hydrating Guar". The United States has produced 4,600 to 14,000 tonnes of guar over the last 5 years.〔Guar in West Texas http://lubbock.tamu.edu/files/2013/06/Guar-Production-Industry-Texas-May2013-Trostle.pdf〕 As many as 50,000 acres of guar have been grown in West Texas over the last 50 years. The world production for guar gum and its derivatives is about 1.0 Million tonnes. Industrial guar gum accounts for about 70% of the total demand. Mainly it is used as a proppant transport / proppant suspending agent in Hydraulic Fracturing Process. In 2012 guar prices increased by 900-1000%. The main reason for this large scale price rise was the inventory build up by companies like Halliburton and Schlumberger, amidst the fear of shortage of guar gum for drilling due to ongoing drought in Rajasthan. 2013 was a strong year for guar sowing and production in India. The total sowing area rose by 21 percent in 2013 to reach 10.6 million acres. Rajasthan, Haryana, and Gujarat – the three key guar-producing states – exceeded the sowing area target set by their respective agriculture departments. Non-traditional guar cultivators in other Indian states also showed keen interest in the crop in 2013.〔http://www.guarindian.com〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Guar gum」の詳細全文を読む スポンサード リンク
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