Analysis of morphological characteristics and initial development of tea bag products from Camellia in Na Hang - Tuyen Quang

The Yellow camellia was first discovered in Vietnam in the early 20th century. The leaves of the camellia plant contain many phenolic compounds such as ellagitannin, taxifolin deoxyhexose, proanthocyanidin, kaempferol derivatives, apigenin derivatives, glucosyl isorhamnetin, quercetin derivatives and platphylloside. Using morphological comparison methods, we initially identified the large yellow-flowered camellia in Khau Tinh commune, Na Hang district, Tuyen Quang province as Camellia megasepala Hung T. Chang & Trin Ninh. To create tea bags from yellow camellia leaves, we have built a production process and with evaluated food hygiene and safety criteria, and as well as assessed sensory quality criteria according to TCVN 3218: 2012) is built. The evaluation results indicated that the tested formulas achieved high sensory scores, all exceeding 19.5 points.