Nondestructive testing method for water distribution in drying process of roots of red-rooted salvia

Abstract

The invention discloses a nondestructive testing method for water distribution in the drying process of roots of red-rooted salvia. Roots of red-rooted salvia samples with different drying times and different drying temperatures are coated with thread seal tapes in a sealed mode, and the coated roots of red-rooted salvia samples are placed for 3-5min at room temperature; a T2 spectrogram and proton density weighed images are obtained through the low-field nuclear magnetic resonance technology, the positions of 10 ms and 100 ms in the T2 spectrogram serve as boundaries, bound water exists at the positions of 0.1-10 ms, water not likely to flow exists at the positions of 10-100 ms, free water exists at the positions of 100-1,000 ms, the peak integral area serves as the relative content of the water, and therefore the relative content of the bound water, the relative content of the water not likely to flow and the relative content of the free water are obtained; distribution positions of the water in the roots of red-rooted salvia samples in the roots of red-rooted salvia samples are obtained according to the proton density weighed images, therefore, the distribution states of the bound water, the water not likely to flow and the free water of the roots of red-rooted salvia samples with the different drying times and the different drying temperatures are obtained, and then the water distribution in the drying process of the roots of red-rooted salvia is obtained.

Description

technical field [0001] The invention belongs to the technical field of traditional Chinese medicine processing, and relates to a drying process of salvia miltiorrhiza, in particular to a non-destructive detection method for moisture distribution in the drying process of salvia miltiorrhiza. Background technique [0002] Salvia miltiorrhiza, also known as blood ginseng, purple salvia miltiorrhiza, red root, etc., is the dry root and rhizome of Salvia miltiorrhiza Bunge, a perennial herb of the labiatae genus Salvia. Pain relieving, clearing heart-fire and relieving restlessness, cooling blood and eliminating carbuncle. For chest pain and heart pain, epigastric and hypochondriac pain, accumulation of lump in the abdomen, arthralgia due to heat pain, vexation and insomnia, irregular menstruation, dysmenorrhea, swelling and pain of sore. [0003] Modern medicine has proved that Danshen has the effect of dilating blood vessels and increasing coronary blood flow. The proportion o...

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Problems solved by technology

[0005] Due to different soil and climate conditions, the moisture content and water distribution of fresh salvia miltiorrhiza produced in different origins will be different. Therefore, it is necessary to conduct a large number of conditional exploration experiments to find the best drying process of salvia miltiorrhiza. In the process of the best process, a lot of raw materials, energy and time need to be wasted, which increases production costs

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