What are the differences between Spurway and CAT+ extraction of bioavailable nutrients, aside from the extraction agent (acetic acid and calcium chloride respectively)?
1. Spuway extraction is a method of extracting bioavailable nutrients from plants by subjecting the sample to high-temperature steam, which removes much of the plant material but leaves the nutrients intact. CAT+ extraction is a method of extracting bioavailable nutrients from plants by using a combination of high-temperature steam, chemical solvents, and mechanical force to break down the plant material and extract the nutrients.
2. Spuway extraction is a rapid method that can be done in under an hour, while CAT+ extraction is a slower process that can take several hours.
3. Spuway extraction is more efficient at extracting heat-sensitive compounds, while CAT+ extraction is more efficient at extracting compounds that are resistant to heat.
4. Spuway extraction produces a more concentrated solution, while CAT+ extraction produces a less concentrated solution.
5. Spuway extraction is more expensive than CAT+ extraction.
Thanks for you contribution Md. Sakhawot Hossain ,
However, I know that these methods are used for nutrients in media more than the plant itself. I don't see the point of assessing plant-available nutrients in the plant since they must have already been assimilated to be there. While I understand how the Spurway extraction would be more efficient for heat-sensitive compounds, I don't understand why it CAT would do the same for heat-resistant.
Finally, in the catalogues I've read is the opposite and CAT is more expensive. Please, answer with some references.
The differences between Spurway and CAT+ extraction of bioavailable nutrients:
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