Extracting polyphenol compounds from green tea leaves and studying their inhibitory activity on the polymerisation process
Abstract
The study shows that the polyphenol compounds extracted from green tea leaves are capable of inhibiting radical reactions occurring during thermal processing of petroleum products. In laboratory conditions, polyphenol compounds have relatively high activity in inhibiting the polymerisation of unsaturated compounds in pyrocondensate (liquid products of pyrolysis of hydrocarbons) under high temperature (~ 130oC). The results of the study indicate that the polyphenol compounds from green tea leaves can be used instead of industrial inhibitor 2,6-di-tertbutyl-4-metylphenol (ionol), especially in Vietnam where the supply of material (old tea leaves) is plentiful and inexpensive.
References
В.А.Курбатов, А.Г.Лиакумович, П.АКирпичников. Практика использования фенольных ингибиторов в процессах получения мономеров//Нефтехимия. 1983; Т. XXIII (1): С. 118 - 120.
http://www.lef.org/Vitamins-Supplements/Item00927/Vitamin-C-with-Dihydroquercetin.html
http://en.wikipedia.org/wiki/Taxifolin.
ГОСТ 8489-85. Топливо моторное. Метод определения фактических смол (по Бударову). М: Изд-во стандартов. 1985: C.3.
Đỗ Chiếm Tài, A.F.Gogotov, Đàm Thị Thanh Hải, Hoàng Thịnh Nhân. Nghiên cứu sử dụng chất ức chế mới dạng phenol trong quá trình polymer hóa các sản phẩm lỏng của quá trình nhiệt phân hydrocarbon. Tạp chí Dầu khí. 2012; 9: p. 33 - 37.
ГОСТ 2070-82. Методы определения йодных чисел и содержания непредельных углеводородов. М.: Изд-во стандартов. 1983; С. 6.
Li-fei Wang, Dong-man Kim, Jong-dae Park, Chang Y.Lee. Various antibrowning agents and green tea extract during processing and storage. Journal of food Processing and Preservation. 2003; 27: p. 213 - 225.
Kyung Ho Row, Yinzhe Jin. Recovery of catechin compounds from Korean tea by solvent extractio. Bioresource Technology. 2006; 97: p. 790 - 793.
Nguyễn Thị Thu Trang. Tối ưu hóa các điều kiện chiết tách EGCG và các hoạt chất kháng oxy hóa từ lá chè xanh. Kỷ yếu hội nghị “Sinh viên nghiên cứu khoa học”. Đà Nẵng. 2009: p. 54 - 62.
А.А.Левчук. Ингибированиеполимеризационных процессов фенолами различного происхождения в жидких продуктах пиролиза/Дисс…канд. техн. Наук, Томск. 2010: С. 156.
Рогинский В.А. Фенольные антиоксиданты: Реакционная способность и эффективность. М.: Наука. 1988: С. 247.
В.В.Ершов, Г.А.Никифоров, А.А.Володькин. Пространственно затрудненные фенолы. М.: Химия. 1972: С. 351.

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