Quality assessment of eight tea varieties in Longnan region
[Objective]The objective of this study was to address the relatively short cultivation history of tea trees in Longnan.The rapid and extensive introduction and cultivation of tea varieties in this region have resulted in a complex array of tea types,making it crucial to identify and optimize tea varieties that are best suited for this area.[Method]To achieve this,eight tea varieties that were introduced and cultivated in Longnan were selected as study materials.The study quantitatively analyzed and determined the differences in tea quality among these varieties by examining the main chemical components associated with tea quality.[Result]The results indicated that the tea polyphenol content,theanine content,caffeine content,water ex-tract content,and tea polysaccharide content in the eight tea tree varieties ranged from 6.18%to 13.91%,4.47%to 9.23%,0.89%to 3.04%,25.28%to 45.14%,and 7.62 to 10.22 mg/g,respectively.Notably,the most significant differences among the varieties were observed in water extract and caffeine content,with specific qualities such as high theanine and low tea polyphenol content,indicating suitability for green tea production.The average zinc content across the eight tea tree varieties was 77.27 μg/g,suggesting a high concentration of zinc present.The comprehensive quality analysis revealed that Wuniuzao early water exhibited superior qualities in terms of extract,tea polysaccharides,tea polyphenols,catechins,and other at-tributes,resulting in a comprehensive biochemical quality score of 1.11.[Conclusion]In conclusion,tea from the Longnan area boasts a diverse range of characteristics and demonstrates high levels of biochemical quality and safety.Among the varieties studied,Wuniuzao stands out as the most promising tea variety for promotion in the Longnan region.
万方数据
维普
