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Theaflavins (TF) and thearubigins (TR) are the important chemical compounds, which contribute to the colour and brightness of tea liquor. Estimation of TF and TR in black tea is generally done using a spectrophotometer. But, the analysis technique undergoes rigorous time consuming effort for sample preparation; also the operation of costly spectrophotometer requires expert manpower. To overcome above...
An important aspect of silkworm seed production is to ensure Pebrine disease free eggs. For that reason, the egg-laying moths are cut and their tissues are examined under microscope for presence of Pebrine spores in those tissues. If the tissues are found free of infection, then only the corresponding eggs are distributed amongst the villagers pursuing sericulture. Currently the entire process is...
The color of Tasar silk yarns is determined by a number of production factors, any slight variation in any one of these factors lead to variation in color of the yarn produced. At the present production technology, it is difficult to produce yarns of uniform color at the producers' level, but once produced, those yarns can be sorted based on its color. The important characteristic of tasar silk yarn...
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