In this paper,single-factor experiments and orthogonal experiment were conducted to optimize the water bath extraction of polyphenols from Qing Brick Tea,and the optimal extraction conditions obtained were as follows:...In this paper,single-factor experiments and orthogonal experiment were conducted to optimize the water bath extraction of polyphenols from Qing Brick Tea,and the optimal extraction conditions obtained were as follows:solvent of 50%ethanol,solid/liquid ratio of 1∶30,temperature of 80℃,and time of 6 min.Under the optimal water bath extraction conditions,polyphenols in fresh tea leaves,fresh tea petioles,fresh tea blades,finished brick tea,finished tea petioles,finished tea blades,tea dregs after brewing and tea dregs after boiling were extracted,respectively.It was found that the quality fraction of polyphenols extracted from fresh tea leaves was the highest,with the best extraction effect.The extraction effect of leaf blades was better than that of leaf petioles,and the extraction effect of tea dregs after brewing was better than that of tea dregs after boiling.展开更多
Based on the survey data and statistical information on farmers,we conduct comparative analysis of land use behavior of farmers in the Jianghan Plain and the hilly areas of Xianning City in Hubei Province.We find that...Based on the survey data and statistical information on farmers,we conduct comparative analysis of land use behavior of farmers in the Jianghan Plain and the hilly areas of Xianning City in Hubei Province.We find that the utilization rate of agricultural land and level of agricultural labor output in the plain areas are higher than in the hilly areas;at the same time,the degree of mechanization of agricultural land utilization and farmers'land use scale are larger in the plain areas.But the crop type in the plain areas is single,and the decline rate of the growing area of food crops is higher in recent twenty years;meanwhile,the material input costs and opportunity cost of labor for the agricultural land utilization in the plain areas are greater than in the hilly areas.展开更多
Located in Wuling mountain area which is the main battlefield for poverty alleviation in the new stage,Hefeng County of Hubei Province has been recognized as a " National Key Tea-producing County in 2013"( r...Located in Wuling mountain area which is the main battlefield for poverty alleviation in the new stage,Hefeng County of Hubei Province has been recognized as a " National Key Tea-producing County in 2013"( ranking 17th) and one of the " Top Ten Ecological Rea Counties of China in 2012". As the first county of tea export in Hubei Province,it has been awarded the " Town of the Chinese Tea" certificate by the State Forestry Bureau. This paper introduced the characteristics of geographical indication and the current situation of brand of Hefeng Tea. Later,it analyzed its geographical indication protection and brand cultivation strategies and puts forward 9 suggestions.展开更多
The yellow tea falls within one of the six basic categories of tea,and it is a type of unique and ancient tea in China. Junshan Yinzhen is one of China's Top Ten Teas,and Yueyang City in Hunan Province is the home...The yellow tea falls within one of the six basic categories of tea,and it is a type of unique and ancient tea in China. Junshan Yinzhen is one of China's Top Ten Teas,and Yueyang City in Hunan Province is the hometown of yellow tea. The yellow tea now has 2 national geographical indication products,4 national geographical indication trademarks,1 national geographical indication of agricultural products,and 3 items of provincial intangible cultural heritage. The famous brand of yellow tea is just the brand cultural heritage. This article expounds the current situation of geographical indication and cultural heritage protection,and put forth the corresponding recommendations.展开更多
基金Key Project of Philosophy and Social Science Research in Colleges and Universities of Hubei Province(18ZD030)Cultivation Project of Hubei University of Science and Technology(2020-21X12)Open Fund of Enan Cultural Research Center,Hubei Provincial Key Research Base of Humanities and Social Sciences(2018-19XZE04)。
文摘In this paper,single-factor experiments and orthogonal experiment were conducted to optimize the water bath extraction of polyphenols from Qing Brick Tea,and the optimal extraction conditions obtained were as follows:solvent of 50%ethanol,solid/liquid ratio of 1∶30,temperature of 80℃,and time of 6 min.Under the optimal water bath extraction conditions,polyphenols in fresh tea leaves,fresh tea petioles,fresh tea blades,finished brick tea,finished tea petioles,finished tea blades,tea dregs after brewing and tea dregs after boiling were extracted,respectively.It was found that the quality fraction of polyphenols extracted from fresh tea leaves was the highest,with the best extraction effect.The extraction effect of leaf blades was better than that of leaf petioles,and the extraction effect of tea dregs after brewing was better than that of tea dregs after boiling.
基金Supported by Humanities and Social Sciences Research Project of Ministry of Education(11YJAZH038)Research Project of South-Central University for Nationalities(CSY12043)
文摘Based on the survey data and statistical information on farmers,we conduct comparative analysis of land use behavior of farmers in the Jianghan Plain and the hilly areas of Xianning City in Hubei Province.We find that the utilization rate of agricultural land and level of agricultural labor output in the plain areas are higher than in the hilly areas;at the same time,the degree of mechanization of agricultural land utilization and farmers'land use scale are larger in the plain areas.But the crop type in the plain areas is single,and the decline rate of the growing area of food crops is higher in recent twenty years;meanwhile,the material input costs and opportunity cost of labor for the agricultural land utilization in the plain areas are greater than in the hilly areas.
基金Supported by the Social Science Funding Project of Hubei Province(2012296)Fund Project for Humanities and Social Science Research Program of the Ministry of Education(11YJA850019)
文摘Located in Wuling mountain area which is the main battlefield for poverty alleviation in the new stage,Hefeng County of Hubei Province has been recognized as a " National Key Tea-producing County in 2013"( ranking 17th) and one of the " Top Ten Ecological Rea Counties of China in 2012". As the first county of tea export in Hubei Province,it has been awarded the " Town of the Chinese Tea" certificate by the State Forestry Bureau. This paper introduced the characteristics of geographical indication and the current situation of brand of Hefeng Tea. Later,it analyzed its geographical indication protection and brand cultivation strategies and puts forward 9 suggestions.
基金Supported by Hubei Provincial Social Science Fund(2012296)Humanities and Social Sciences Planning Fund of the Ministry of Education(11YJA850019)
文摘The yellow tea falls within one of the six basic categories of tea,and it is a type of unique and ancient tea in China. Junshan Yinzhen is one of China's Top Ten Teas,and Yueyang City in Hunan Province is the hometown of yellow tea. The yellow tea now has 2 national geographical indication products,4 national geographical indication trademarks,1 national geographical indication of agricultural products,and 3 items of provincial intangible cultural heritage. The famous brand of yellow tea is just the brand cultural heritage. This article expounds the current situation of geographical indication and cultural heritage protection,and put forth the corresponding recommendations.
