This invention belongs to the field of tea
processing technology. It provides a novel comprehensive
processing technique for improving the quality of summer and autumn
black tea, comprising the steps of gentle shaking combined with UV-B-LED combined spectral withering, low-temperature controlled pressure gradient kneading, three-parameter linked dynamic
fermentation,
microwave-hot
air coupled drying, and far-
infrared variable-temperature
aroma enhancement. Gentle shaking combined with UV-B-LED combined
spectroscopy promotes the
polymerization and transformation of
flavor components; low-temperature controlled pressure gradient kneading allows for controllable
cell breakage of tea leaves, promoting the outflow of tea juice; three-parameter linked dynamic
fermentation increases the content of theaflavins and aromatic substances, improving the uniformity of
fermentation;
microwave-hot
air coupled drying reduces
aroma loss and improves
drying efficiency; far-
infrared variable-temperature
aroma enhancement enriches the aroma of the tea, improves tea quality, and enhances the harmony and lasting
sweetness of the tea soup. The resulting
black tea has a complex aroma of flowers and honey, a bright red liquor, a mellow and refreshing taste, and a comprehensive sensory
score as high as 95.6.