[Objective] This study aimed to test the effects of high-intensity pulsed electric field on the amino acid content in Pu’er tea leaves. [Method] The amino acid contents of fermented and unfermented the leaves of larg...[Objective] This study aimed to test the effects of high-intensity pulsed electric field on the amino acid content in Pu’er tea leaves. [Method] The amino acid contents of fermented and unfermented the leaves of large-leaf Pu’er tea variety produced in Yunnan Mengku, were measured before and after the treatment with high-intensity pulsed electric field (HPEF). [Result] The difference of amino acid contents was notable between fermented and unfermented tea leaves produced in the same year. The amino acid content of unfermented tea leaves was larger than that in fermented tea leaves. The amino acid content in tea leaves decreased over time during storage. HPEF treatment under al the conditions improved the amino acid content in tea leaves. [Conclusion] This experiment provides theoretical foundation for the application of HPEF in processing of Pu’er tea leaves.展开更多
[Objective] This study aimed to further explore the relationship between tea and health. [Method] Different experimental groups were designed to preliminarily investigate the effects of "Plateau Bright Pearl" commix...[Objective] This study aimed to further explore the relationship between tea and health. [Method] Different experimental groups were designed to preliminarily investigate the effects of "Plateau Bright Pearl" commixed green tea on blood pressure, myocardial ultrastructure and level of plasma angiotensin Ⅱ (Ang Ⅱ) in spontaneous hypertensive rats. [Result] The results showed that "Plateau Bright Pearl" commixed green tea could significantly decrease blood pressure and level of plasma angiotensin Ⅱ (ang Ⅱ) in spontaneous hypertensive rats and improve ultrastructures of left ventricular mitochondrion and myofibrillae. [Conclusion] "Plateau Bright Pearl" commixed green tea has many physiological health functions including losing weight, protecting the heart and lowering blood pressure.展开更多
基金Supported by Scientific Research Fund from Department of Education of Yunnan Province(2012Z134C)~~
文摘[Objective] This study aimed to test the effects of high-intensity pulsed electric field on the amino acid content in Pu’er tea leaves. [Method] The amino acid contents of fermented and unfermented the leaves of large-leaf Pu’er tea variety produced in Yunnan Mengku, were measured before and after the treatment with high-intensity pulsed electric field (HPEF). [Result] The difference of amino acid contents was notable between fermented and unfermented tea leaves produced in the same year. The amino acid content of unfermented tea leaves was larger than that in fermented tea leaves. The amino acid content in tea leaves decreased over time during storage. HPEF treatment under al the conditions improved the amino acid content in tea leaves. [Conclusion] This experiment provides theoretical foundation for the application of HPEF in processing of Pu’er tea leaves.
基金Supported by Major Special Science and Technology Project of Guizhou Province "Key Technology Research and Demonstration of Tea Industry in Guizhou" [(2008) 6015]Project of Guizhou Provincial Department of Science and Technology "Core Technology Research and New Product Development of 'Plateau Bright Pearl' Antihypertensive Health Tea" [(2010) 4002]~~
文摘[Objective] This study aimed to further explore the relationship between tea and health. [Method] Different experimental groups were designed to preliminarily investigate the effects of "Plateau Bright Pearl" commixed green tea on blood pressure, myocardial ultrastructure and level of plasma angiotensin Ⅱ (Ang Ⅱ) in spontaneous hypertensive rats. [Result] The results showed that "Plateau Bright Pearl" commixed green tea could significantly decrease blood pressure and level of plasma angiotensin Ⅱ (ang Ⅱ) in spontaneous hypertensive rats and improve ultrastructures of left ventricular mitochondrion and myofibrillae. [Conclusion] "Plateau Bright Pearl" commixed green tea has many physiological health functions including losing weight, protecting the heart and lowering blood pressure.