KHẢO SÁT ẢNH HƯỞNG CỦA MỘT SỐ YẾU TỐ ĐẾN CHẾ BIẾN TRÀ KHÔI NHUNG TÍA (Ardisia sylvestris Pitard) ĐÓNG CHAI

Abstract

With the aim of studying the processing process of Ardisia sylvestris Pitard bottled tea, the surveys were conducted including changing the extraction time (40÷120 minutes), choosing the ratio between the extract and water (0,3:1÷1:1), potassium sorbate content (0÷0,1%) for the purpose of preserving tea after dilution, choosing between packaging types and surveying the ability to preserve under room conditions. The research results showed that the extraction time of 40 minutes gave better sensory values ​​of Taste, higher pH and yield. The 1:1 ratio gave better sensory values ​​of Color, Smell, Taste. The potassium sorbate content of 0,1% maintained the Clarity and pH of tea under cold storage conditions better. Bottled Ardisia sylvestris Pitard tea has a better shelf life under cold conditions than under room temperature conditions. Bottled Ardisia sylvestris Pitard tea products cannot maintain their preservation quality when potassium sorbate is added under normal conditions.