Does PME activation differ between potato varieties?
Potatoes contain the enzyme pectin-methyl esterase (PME). Par-boiling potatoes at a temperature range between 130F to 140F, activates this enzyme, gelatinising the starch cells in the potato.
According to Dave Arnold's experiments on Cooking Issues, this results in french fries that stay stiffer after frying. In my own testings, I have found that par-boiling potatoes at 140F before cooking them creates fluffier mashed potatoes as well.
Experiments on this enzyme that I have found online seem to test them on french fries, but they don't mention what variety of potatoes they use; high starch, waxy, low-moisture, high-moisture.
High-starch, and low-moisture: Russets, Idahos, Yukon Golds
Waxy and high-moisture: Granolas, Fingerlings, Desirees
My question is, does the temperature range and effects of PME activation differ between varieties of potatoes?
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What is the difference between different potato varieties?
The difference is due to the type of starch and the amount of moisture in the flesh \u2014 two characteristics that are used to categorize potato varieties. The potatoes that remain intact are of the "moist, waxy" variety; the ones that fall apart are in the "dry, mealy" category.Can you mix different types of potatoes?
You use just one type of potato. They're ideal for roasted potatoes and potato salad. For the best mashed potatoes, use a 50/50 combination. We like russets with Yukon Gold. When mashed, the russets will contribute a light and fluffy texture while the Yukon Golds lend flavor and a bit of creamy heft.What are the 3 classes of potatoes?
Potatoes are categorised into 3 basic types \u2013 starchy, waxy and all-purpose.- Starchy: Starchy potatoes are high in starch, low in moisture and have a floury texture with creamy white flesh. ...
- Waxy: Waxy potatoes have less starch than Starchy potatoes and contain more moisture and sugar. ...
- All-Purpose:
How many types of potato varieties are there?
More than a billion people worldwide eat potato, and global total crop production exceeds 300 million metric tons. There are more than 4,000 varieties of native potatoes, mostly found in the Andes. They come in many sizes and shapes. There are also over 180 wild potato species.Potato Varieties - Explained 101
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