T/LYCY 010-2020 Durum dewy tea

Scope

Scope: This standard specifies the terms and definitions, raw material requirements, sensory indicators, physicochemical indicators, contaminants and pesticide residues, net content, inspection methods, inspection rules, marking and labeling, packaging, transportation, storage, and shelf life of Du Zhong Xiong Hua tea. This standard applies to Du Zhong Xiong Hua tea products. Main technical content: 4.1 Raw materials shall comply with the requirements for Du Zhong Xiong Hua specified in the Announcement of the National Health Commission on Approving Six New Food Ingredients, including Chitosan (No. 6, 2014). 4.2 Sensory indicators are divided into three grades based on sensory evaluation: Grade I, Grade II, and Grade III. They shall comply with the provisions of Table 1. Table 1: Sensory Indicator Grades Sensory Indicator Grade I Tea body is in strip shape, green or brownish. Broth color is yellow-brown to red-brown, with a faint fragrance and a distinctive rich aroma of the product. The broth color remains unchanged after prolonged storage. Grade II Tea body is in strip shape, dark green or dark brown. Broth color is dark brown, with a slightly insufficient or slightly strong aroma, and a distinctive aroma of the product. The broth color remains basically unchanged after prolonged storage. Grade III Tea body is in strip or cluster shape, dark green or black-brown. Broth color is dark green, with a greenish or burnt aroma, and the broth color changes significantly after prolonged storage. 4.3 Physicochemical indicators shall comply with the provisions of Table 2. Table 2: Physicochemical Indicators Item Indicator % (by mass fraction) Water content ≤11.0 Total ash content ≤12.0 Broken tea ≤6.0 Total amino acids ≥15.0 Total flavonoids ≥2.0 Chlorogenic acid ≥0.24 4.4 Contaminants and pesticide residues shall comply with the provisions of Table 3. Table 3: Contaminants and Pesticide Residues Item In

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