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About mcspencah

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  1. The proteins we extract from the potato's are used as a replacement for animal proteins. They are used in plant based meat, dairy, cheese and ice cream! It's a relatively new process and really interesting.
  2. Hello, I'm doing analysis on potato juice and i just got the XRF analysis results from the lab. The results show many different metal concentrations dissolved in the juice(like potassium and sodium). What do these concentrations mean. Is it the overall metal concentration, including iron complexes for example? Or is it just the ion's in the sample like Fe2+ and Fe3+? Thanks in advance.
  3. Thank you for the great reply's but i already found the answer. It seems that during the centrifugal separation the fruit juice get's diluted by about 15% which explains the drop in conductivity.
  4. Thank you for the reply. I'm unfortunately not allowed back at the factory as an intern because of the current epidemic so I'm not able to do more experiments. The separating(done mechanically with industrial decanters with centrifugal force) process runs at normal temperatures because higher temperatures will denature the wanted proteins in the fruit juice. And i think all cells are broken when the potato's are grinded into a pulp. So from my understanding so far suspended solids shouldn't have an impact on conductivity? I'm finding a lot about the relation between dissolved solids and conductivity but not about suspended ones. Thank you for the reply. I'm having trouble understanding electrode polarization. Doesn't this only happen with dissolved ions? And would an over-voltage mean an higher measured conductivity?
  5. I will look into the polarity, thank you for your answer. And the separating is done mechanically with centrifugal forces so they do not separate dissolved molecules. No, i'm doing quality analysis in a running factory. I've only measured the conductivity with a simple pH/conductivity meter. The juice is still full of other components like proteins,sugars and many other compounds. But i'm seeing a pretty significant reduction in conductivity after the fibers and starch are separated from the juice so i was wondering if suspended solids do have an effect on electrical conductivity. Yes, to extract proteins edit: from potato's, not potato fruit. The extracted juice from potato is called potato fruit juice 😛
  6. Hello, I'm writing my thesis and i was wondering the following; Do suspended particles in a solution conduct electricity? I see a decrease in conductivity after separating suspended solids in a solution (starch and fibers in a potato fruit juice solution). It's 10-20% reduction in conductivity. I'm wondering if this is a result of the separating of the solids or if there is another reason. Thanks in advance.
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